JP2601424B2 - Variable optical system controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field The present invention relates to a variable power optical system control device, and more specifically, comprises a variable power lens group and a focusing lens group disposed on the same optical axis, Variable magnification optics that can be arbitrarily set to any one of a plurality of areas such as a variable magnification area in which the focal length can be changed, a macro area in which macro photography can be performed, and a storage area for storing each of the lens groups in a predetermined position. The present invention relates to a variable power optical system control device having a system.

(B) Conventional technology In recent years, the camera body and the photographing lens used for the camera have been significantly digitized or motorized. For example, in a photographing lens, a lens group constituting the photographing lens is driven by a motor or the like to change the focal length. Variable magnification area,
A plurality of areas, such as a macro area where macro photography is possible and a storage area for compacting when not in use, can be set by one-touch switch operation. On the other hand, due to the low cost of a one-chip microcomputer (hereinafter abbreviated as “CPU”), in a photographing lens, for example, control of updating the focal length in the above-described zooming area, in particular, an additional position shift ( Shift) control of the shift correction of the varifocal lens which generates
Controls for various automated camera operations, such as automatic winding and rewinding of an automatic exposure film, are being performed by the CPU as a whole.

By the way, it is of course possible to incorporate the CPU into the photographing lens itself and control it independently, but in general, it is configured to control the photographing lens by the CPU of the camera body for economic reasons. . Therefore, the input port for recognizing an external state necessary for the CPU to execute various controls includes operation switches operated by the user of the camera, states of various mechanical units of the camera body and the photographing lens. A state detection switch or the like to be detected is connected. However, the number of the input ports varies depending on the type of CPU, but is a limited number, and is connected to the input ports in order to cope with scalability of various control operations, changes in specifications of cameras and photographing lenses, and the like. It is desirable to have as few switches as possible.

By the way, even in the above-described photographing lens having a plurality of regions, a means (for example, a switch) is required for the CPU to recognize in which region the lens group is located. More specifically, several area identification patterns each composed of a combination of a conductor part and an insulation part are arranged in a plane, and an electric sliding contact ( A means for moving the brush and identifying the area by the combination of the conductor and the insulating part can be considered. However, taking into account the limitation of the number of input ports as described above, and also providing a resistor for detecting a change in the focal length in the variable power area as described above, the number of lines as small as possible after being attached to the area identification pattern When the above-mentioned pattern is constituted by the three lines, there is a problem that an indistinguishable section is formed in a part of this pattern. Also like this,
In a configuration in which a mechanical stopper is not used, when the lens group is stopped at the end of one area, overrun occurs due to the residual rotation of the motor even after the power to the motor that drives this lens group is cut off. There is a problem that the vehicle cannot be stopped at a correct stop position, for example, when the vehicle enters another connected area.

(C) Objective The present invention has been made in view of the above-described circumstances, and the object thereof is to use an area identification information generating unit that partially cannot identify a set area. Without
A variable-magnification optical system that is inexpensive and has a simple configuration, quickly and reliably sets a variable-magnification optical system in a designated area, and that can accurately stop the variable-magnification optical system at a scheduled stop position at the end of each area. An object of the present invention is to provide a system control device.

(D) Configuration The first invention (the invention described in claim 1) is:
In order to achieve the above-mentioned object, a variable-magnification area including a variable-magnification lens group and a focusing lens group arranged on the same optical axis, and having a variable focal length, a macro-area capable of performing macro photography,
In a variable power optical system control device having a variable power optical system that can be arbitrarily set to any one of a plurality of areas such as a storage area for storing each lens group at a predetermined position, setting of the variable power optical system Area identification information generating means for generating identification information corresponding to an area and generating identification information in which the setting cannot be identified in at least a part of the area; and the variable power optical system for setting the area to a desired area Variable power driving means for driving the variable power driving means, variable power control means for controlling the variable power driving means, and receiving and decoding output information from the area identification information generating means, the variable power optical system Area identification means for identifying which of the above is set, identification information determining means for receiving the output information, decoding the output information and outputting an impossible signal when the identification information is impossible identification information, means And an area searching means for driving the variable power optical system through the variable power control means from the time when the disable signal is output to the time when the disable signal is no longer output, and separately provided to instruct the setting of the area. The variable magnification optical system is set in an area instructed by an externally operable area setting instructing means, wherein the variable magnification optical system is set in the second invention. Consisting of a variable power lens group and a focusing lens group arranged on the optical axis, the variable power area where the focal length can be changed, the macro area where macro photography can be performed, and each of the above lens groups are stored in predetermined positions. In a variable power optical system control device having a variable power optical system that can be arbitrarily set in any of a plurality of areas such as a storage area, a boundary area having a predetermined length is provided at a boundary between adjacent areas. Variable power optics And area identification information generating means for generating identification information corresponding to the area to be constant,
An externally operable drive instructing unit for instructing the driving of the lens group, and driving the variable power optical system to set the variable power optical system in any one of the areas, in an area corresponding to the boundary area, Variable power driving means having an equilibrium area in which the position of the lens group on the optical axis does not change even by the driving; variable power control means for controlling the variable power driving means in response to an instruction from the driving instruction means; An area identification unit that receives output information from the identification information generation unit, decodes the received information, and identifies which of the plurality of regions the variable power optical system is set to; and one end and the other end of the boundary area Edge detection means for detecting the distance, and when the lens group driven by the instruction of the drive instructing means reaches the one end of the boundary area from outside the boundary area, the drive to the magnification control means is performed. Stop The direction in which the lens group was driven immediately before outputting the stop instruction signal is stored as the immediately preceding driving direction, and after a predetermined time, the lens group passes through the one end and passes through the one end, and outputs the stop area. If it moves inward and passes through the other end and stops outside the boundary area, it outputs a reverse drive instruction signal, and if the lens group stops inside the boundary area, A stop determination unit that outputs a prohibition instruction signal; and a prohibition unit that prohibits a drive instruction in the same direction as the immediately preceding drive direction output from the drive instruction unit while the prohibition instruction signal is being output. A variable power control unit that receives the reverse drive instruction signal drives the lens group in a direction opposite to the immediately preceding drive direction to stop the lens group inside the boundary area. And

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the overall configuration of a variable power optical system control device according to the present invention. In FIG. 1, reference numeral 1 denotes an optical axis of a variable power optical system, and 2 denotes the variable power optical system arranged on the optical axis 1 so as to be movable along the optical axis 1. 2a, 2b, 2c, Reference numerals 2d and 2e denote a first group lens, a second group lens, a third group lens, a fourth group lens, and a fifth group lens, each of which includes a single lens or a plurality of lenses. The fifth lens group 2e forms a focusing lens group 3, and the first lens group 2a to the fifth lens group 2e, including the fifth lens group 2e, form a variable power lens group and a macro lens group. . Note that the focal length of the variable power lens group is f. Numeral 4 denotes a variable magnification optical system 2 which is set to any one of a storage area for making the optical system compact when not in use, a variable magnification area where the focal length can be changed, and a macro area where macro photography can be performed. Magnification motor as magnification drive means for driving magnification optical system 2
A variable power drive unit including Mz and a mechanical unit (not shown), and particularly in a variable power area, the focal length f is the longest focal length on the telephoto side (hereinafter simply referred to as “tele position”).
The variable magnification optical system 2 is configured to be driven as a variable magnification lens group in order to set an arbitrary focal length between the minimum focal length and the wide-angle focal length (hereinafter simply referred to as “wide position”) as the shortest focal length. Have been. In the macro area, the variable power optical system 2 acts as a macro lens group. Although not shown, the focusing lens group 3 has an optical axis corresponding to a subject distance from infinity to a close range by a focus driving unit including a focus motor and a mechanical unit, independently of driving by the variable magnification driving unit 4. It is configured to be able to be driven to a position between an infinity position (∞ position) on the first position and a close position. 5 is an identification pattern section as an area identification information generating means, 5a, 5b, and 5c are a first pattern, a second pattern, a third pattern, and 5d are a power supply +
A power supply terminal connected to V, 5e is an output terminal for outputting focal length information (Zp) proportional to the focal length f, 5f, 5g and 5h
Are output terminals for outputting identification information, and are configured to output a magnification area signal (a), a macro area signal (b), and a storage area signal (c), respectively. 5i is a grounded ground terminal, and 6 is driven by the variable power drive unit 4 together with the variable power optical system 2, and contacts 6a and 6b made of an integrally formed conductor.
And 6c are slidable with the first pattern 5a, the second pattern 5b, and the third pattern 5c, respectively.
7 receives the focal length information (Zp) and converts it into an A / D converter 7
The focal length detecting section 8 performs A / D conversion in a, outputs the result, and performs a predetermined operation such as shift correction in the operation section 7b, and outputs the result as an operation output (k). ,
(B) and (c), a general identification unit that outputs an area signal (e) indicating which area the variable magnification optical system 2 is located in, and outputs a negative signal (NG) when it is not at a fixed position. A mode detection unit 9 as area identification means, a boundary edge detection unit 10 as boundary edge detection means, a macro position flag MFG, and a storage position flag SFG. , 11 is an inability determination unit as identification availability determination means that receives the macro area signal (b), the storage area signal (c), and the negative signal (NG) and outputs an inability signal (d) when the identification is impossible. One end of a search section 13 serving as an area search means for receiving the disable signal (d) and outputting a search signal (f) has a power supply + V
And a pull-up resistor 14 having the other end connected to the output terminals 5f, 5g, and 5h of the identification pattern unit 5, respectively. The pull-up resistor 14 receives the area signal (e) and stores the immediately preceding driving direction in the internal memory MR. Performs a predetermined determination, which will be described later, and outputs a stop signal (h) as a stop instruction signal, a reverse rotation signal (g) as a reverse drive instruction signal, and a prohibition signal (i) as a prohibition instruction signal based on the result. A stop / reverse determination unit serving as a stop determination unit for outputting, and all of 15, 16 and 17 are momentary switches which can be operated externally and are closed only when pressed, and both 15 and 16 are storage units which constitute area setting instruction means. Switch / magnification / macro selector switch (hereinafter referred to as “Z / M”)
Reference numeral 17 denotes a magnification changeover switch as a drive instructing unit for setting the focal length f in the variable magnification area. The Z / M switch 16 includes a magnification switch 16a and a macro switch 16b, and the magnification switch 17 includes a magnification up switch (hereinafter simply referred to as "up switch") 17a and a magnification down switch (hereinafter simply referred to as "down switch"). 17b). The magnification change switch 17 is configured so that its operation is effective only when the variable magnification optical system 2 is within the variable magnification area. 18, one end of each of the above switches 15, 16, 17 is connected,
A switch determination unit 19 that determines the state of each of the switches 15, 16, and 17 and outputs the state as a state signal (j). Reference numeral 19 denotes one end connected in parallel to the power supply + V, and the other end to the storage switch 15 and the scaling switch, respectively. 16a, a macro switch 16b, a pull-up resistor connected to the above-mentioned one end of the up switch 17a and the down switch 17b. Each of these switches 1
The other ends of 5, 16a, 16b, 17a, and 17b are all grounded. 20 receives the state signal (j) and the inhibit signal (i)
During the receiving period, the state signal (j) corresponding to the same direction as the immediately preceding driving direction is not output, and when the inhibition signal (i) is not received, the input state signal (j) is output as it is. The prohibition part as prohibition means, 21 is this prohibition part 20
, The arithmetic output (k) of the focal length detector 7 and the focal length information (Zp), the area signal (e), the search signal (f),
It is a scaling control unit as a scaling control unit that receives the reverse rotation signal (g) or the stop signal (h) and controls the scaling driving unit 4. It should be noted that the input / output relationship of each section shows only the main signals.

FIG. 2 is a pattern diagram showing the identification pattern section 5 of FIG. 1 in detail. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 2, 22 to 24 constitute a part of the first pattern 5a, 22 is a focal length information generating pattern (hereinafter referred to as "Zp pattern") composed of a resistor, and 23 and 24 are composed of conductors and are both grounded. Ground pattern connected to terminal 5i, 26
27 constitute a part of the second pattern 5b, and 25 designates the output terminal 5e.
Is connected to Z through the contacts 6a and 6b of the brush 6.
A current collecting pattern for detecting a voltage (focal length information Zp) generated in the p pattern 22, non-magnifying patterns 26 and 27 both formed of conductors connected to the output terminal 5f, and 28 to 31 being ones of the third pattern 5c. The conductors constituting the unit, 28 and 29 are both a storage position pattern and a brake pattern made of a conductor connected to the output terminal 5h, and 30 and 31 are a macro position pattern and a brake pattern both made of a conductor connected to the output terminal 5g. It is. P ₀ is the position of one end of the ground pattern 23 and the non-magnification pattern 26 and the storage position pattern 28, P ₁ is the position of the other end of the storage position pattern 28, P ₂ is the position of one end of the brake pattern 29, and P ₃ is position of the other end of the non-scaling pattern 26, P ₄ is located at one end of the collector pattern 25, P ₅ the position of the other end position and the brake pattern 29 contacts one end of the other end and Zp patterns of the ground pattern 23 , P ₆ is located at one end of the brake pattern 31, P ₇ is located the power at the other end of Zp pattern 22 is applied, P ₈ is located at one end of the ground pattern 24, P ₉ the other end of the collector pattern 25 position of, P ₁₀ is located at one end of the non-scaling pattern 27, P ₁₁ the brake pattern 3
Position of one of the other end, P ₁₂ is located at one end of the macro location pattern 30, P ₁₃ is the ground pattern 24 and the non-scaling pattern 27
And the position of the other end of the macro position pattern 30. Incidentally, P ₇ to P ₈ is, P ₃ to P ₄ and the first pattern 5a
P ₉ to P ₁₀ is the second pattern 5b, at P ₁ to P ₂ and P ₅ to P ₆ and P ₁₁ to P ₁₃ insulating portion forming part of third patterns respectively, the P ₅ to P ₆ Except for the insulating part, the gap is so narrow that it is not short-circuited by the respective contacts 6a, 6b, 6c of the brush 6. The movable range of the brush 6 is P ₀ to P ₁₃ of course. Hereinafter, P ₀ to P ₃ of the housing area, zooming range and P ₃ to P _10, referred to P ₁₀ to P ₁₃ and the macro area, further storage position P ₀ to P _1, housing proximate the P ₁ to P ₂ position,
P ₂ to P ₃ of the housing continuation interval, P ₃ to P ₅ and P ₈ the wide-angle position and the telephoto position of the to P ₁₀ as each border region, P ₅ to P ₈ focus possible interval, P ₁₀ to P ₁₁ macro continuation interval, macro close position P ₁₁ to P _12, referred to as P ₁₂ to P ₁₃ and macro location. In addition, as can be seen from FIG.
P _{6 to} P ₇ and the following insulating portions P _{7 to} P ₈ overlap with P _{6 to} P ₈ of the brake pattern 31. That is, when the contact 6a of brush 6 is in P ₇ to P ₈ in the first pattern 5a, to prevent the potential of the collector pattern 25 becomes unstable, the pull-up of Figure 1 in a brake pattern 31 resistor 13 Is supplied to the current collecting pattern 25 via the contact 6c and the contact 6b to prevent the focal length information (Zp) output from the output terminal 5e from becoming indefinite in the focus variable area. It is configured to be. The storage position flag SFG and the macro position flag MFG in FIG. 1 are set when the variable magnification optical system 2 is at the storage position and the macro position, respectively, and are reset at other positions. .

FIG. 3 is a timing chart showing the change of the waveform of each part in FIG. The first
In FIG. 2 and FIG. In FIG. 3, the focal length information Zp is an analog signal, and the other signals (a), (b), and (c) are all H and L level signals. Incidentally, in the waveform indicating the focal length information Zp, wavy line portions of P ₀ to P ₄ and P ₉ to P ₁₃ are potential indicates uncertainties involved.

Furthermore, when explaining the generation principle of the position and the waveform of the brush 6, for example, brush 6 when there between P ₀ to P ₁ of FIG. 2, the ground pattern 23, non-scaling pattern 26 and the stored position patterns 28 Are short-circuited by the brush 6 via the contacts 6a, 6b and 6c, respectively, and the ground pattern 23 is grounded.
Is at L level, the storage area signal (c) at the output terminal 5h is also at L level, the macro area signal (b) at the output terminal 5g is pulled up by the pull-up resistor 13, and the position of the brush 6 is P ₀ -P as described above. _Since it is ₁ , the brake pattern 31 and the macro position pattern 30 are at the H level because they are released. The potential of the output terminal 5e (focal length information (Zp))
Collector pattern 25 and the ground pattern when in the P ₄ ~P ₅
23 is shorted by brush 6 so 0 potential, and from P ₅
Potential rises with the movement of the P _6, is substantially the power supply voltage + V is between P ₆ to P _8.

FIG. 4 is a cam diagram showing characteristics of the variable power optical system 2 of FIG. In FIG. 4, reference numerals 32 to 36 denote cam lines indicating the movement of the first group lens 2a to the fifth group lens 2e, respectively, 36 denotes a cam line at the position ∞, and 36a denotes a cam line at the close position. Is shown. 37, storage location corresponding to P ₀ to P ₁ of FIG. 2, 38a and 38b are P ₃ of the second views, respectively, a position corresponding to P _5, of 39a and 39b are second views, respectively P _8, P the position corresponding to _10, 40 macro location corresponding to P ₁₂ to P ₁₃ of FIG. 2,
theta ₁ focus variable section corresponding to the P ₅ to P _8, is θ ₂ P ₁₀ ~P ₁₃
, ₃ is a storage area corresponding to P _{0 to} P ₃ , and θ ₄ and θ ₅ are a wide side and a tele side corresponding to the wide positions P _{3 to} P ₅ and the tele positions P _{8 to} P ₁₀ , respectively. Is the equilibrium region of

FIG. 5 is a development view of a cam groove specifically showing the cam wire of FIG. The same parts as those in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 5, reference numerals 41 to 45 denote cam grooves corresponding to the cam wires 32 to 36, respectively, and reference numerals 46 to 49 denote first group lenses.
This is a straight cam groove for converting the second lens group 5a to the fifth lens group 5e into movement in the optical axis direction. Numeral 50 corresponds to the moving cam frame, and the equilibrium areas θ ₄ and θ _{5 of the} above-described wide position and tele position.
Is a region in which the positions of the lens groups 2a to 2e do not change and the focal length does not change even when the moving cam frame 50 moves.

6 to 14 are flowcharts showing the operation sequence of FIG. 1. FIGS. 6 and 7 show a main routine. FIGS. 8 to 14 are FIGS. 6 and 7. Fig. 8 shows the wide position control, Fig. 9 shows the tele position control, Fig. 10 shows the macro position control, Fig. 11 shows the storage position control, and Fig. 12 shows the subroutine. FIG. 13 shows a macro position escape, and FIG. 14 shows a subroutine by interrupt processing, the content of which is stop control (hereinafter abbreviated as “ZBM”) in the variable magnification area (both ends). The interruption process is activated when the magnification changeover switch 17 is operated and the macro area signal (b) or the storage area signal (c) becomes L level.

The operation of the main routine shown in FIGS. 6 and 7 is configured to start when the storage switch 15 or the Z / M switch 16 is operated (closed). 6 to 14 will be described together in the following description of the operation, and will not be repeated here. However, in the subroutine of FIG. 8 to FIG. 13, the signal (c) in FIG. 8 is stored in the signal (b), the motor normal rotation is set to the motor reverse rotation, and the motor reverse rotation is set to the motor normal rotation and the macro direction inhibition is stored. Replacing the direction prohibition and the storage direction prohibition with the macro direction prohibition are the same as in FIG. 9, and replacing the signal (b) in FIG. 10 with the signal (c) and replacing the macro flag with the storage flag in FIG. 12 is the same as FIG. 13 and FIG. 13 is the same as FIG. 13 if the signal (c) is replaced with the signal (b) and the storage flag is replaced with the macro flag.

Now, the operation of the present embodiment thus configured will be described with reference to the flowchart of the main routine shown in FIGS. 6 and 7. Note that, in order not to complicate the description, first, an area setting operation for setting an area is performed by the storage switch 15,
A description will be given of a case where the variable power switch 16a and the macro switch 16b are operated (closed), respectively, and a case where the brush 6 in FIGS. 2 and 3 is not operated.

(I) Area setting operation by the storage switch (a) In the storage close position Now, the variable power optical system 2 and the brush 6 are in the storage close position P ₁
And in the ~P _2. Here, if the storage switch 15 is operated, the switch determination unit 18 determines that the input is from the storage switch 15, and starts the area setting operation.
That is, the flowchart starts from START in FIG. First, in the first conditional branch "magnification area?", The mode detection section 9 of the general identification section 8 checks the magnification area signal (a), and as shown in FIG. is H level only in the zooming range P ₃ to P _10, current position P ₁ to P ₂ is so L level, it is determined that no zooming area branches to nO. Next conditional branch "storage position?"
Similarly mode detection unit 9 checks the storage position flag SFG, since when not in storage position P ₀ to P ₁ as described above has been reset branches to NO, similarly in the following "macro location?" In Check the macro position flag MFG,
Since it has been reset for the same reason, a negative signal (NG) is output, and the process branches to NO. The operation from START to here is called "fixed position check operation". In other words, by the home position check operation, it has been found that the variable power optical system 2 is not present in any of the storage position, macro position, and the variable power area, which are the fixed positions. Therefore, a negative signal (N
G). However, such a state that the variable power optical system 2 is not at the above-mentioned fixed position cannot occur due to the design. However, for example, it is expected due to an external force (push the variable power optical system 2 by hand) or an obstacle. It may stop at a position that does not.

On the other hand, the impossibility judging section 11 starts receiving the negative signal (NG) from the general discriminating section 8 in the next conditional branch "unrecognizable?" The signal level of the storage area signal (c) is checked. That is, by the above-mentioned fixed position check operation,
Now, if the variable power optical system 2, since it is already known on either P ₁ to P ₃ or P ₁₀ to P _12, the two signals (b), an H level is (c) Check if not. That is, in this case, since both are at the H level, P ₁
To P ₂ or P ₁₁ to P ₁₂ one at a determination of whether the (identification) is disabled. Therefore, the impossibility judging section 11 outputs the impossibility signal (d) indicating this state, and the search section 12 receiving this outputs the search signal (f) in the next “drive to the macro side” and receives it. The variable power controller 21 rotates the variable power mode Mz, and moves the variable power optical system 2 via the variable power driver 4 to the macro position P.
Driving in the direction of ₁₂ to P ₁₃ side. Accordingly, the brush 6 between P _{1 and} P ₂ starts toward the side of P _3, but still starts to move between P _{1 and} P ₂
Let's say Therefore flowchart branches to NO by checking whether the variable power optical system 2 and the brush 6 by: branch "Macro reached?" Has reached the macro location P ₁₂ to P _13, the next conditional branch "housing In the “continuation section?”, It is checked whether or not it has moved to the storage continuation section P _{2 to} P ₃ , and a branch is made to NO. In the next conditional branch “macro continuation section?”, Is the macro continuation section P _{10 to} P ₁₁ present? It is checked whether it is not or not, and the process branches to NO, and returns to the conditional branch “macro reached?” Again (hereinafter, the operation of this loop is referred to as an “impossibility check loop”). Well P ₁ ~
Brush 6 that were in the P ₂ moves to P ₃ side branches to YES from the "storage continuing interval?" In the non check loop at the time of past P _2, not determinable unit 11 impossible signal (d ) Output is stopped. Since the search unit to which the disable signal (d) is no longer input stops outputting the search signal (f), the variable power control unit to which the search signal (f) is no longer input changes the power in the next "stop of variable power drive". The rotation of the magnification motor Mz is stopped, and the driving of the variable magnification optical system 2 and the brush 6 is stopped. Next, in the conditional branch “storage switch closed?”, Since the storage switch 15 is now operated (closed), the flow branches to YES, and in the next “focus driving”, the focus lens is moved by a focus driving unit (not shown). Drive group 3 to position ∞. This operation is an operation for matching the directionality when driving the focusing lens group 3 to the in-focus position in the variable power region and the macro region, and is not directly related to the gist of the present invention. The description of “focus drive” in the flowchart is omitted. Next, in “drive to the storage position”, the variable power control unit 21 sets the storage switch 15 via the area signal (e) indicating that the brush 6 is within the storage continuation section P _{2 to} P ₃ and the prohibition unit 20. Upon receiving a state signal (j) indicating that the optical system is closed, P _{0 in} which the variable magnification optical system 2 should be housed.
The variable magnification motor Mz is rotated so as to be driven to the side. Then, in the next subroutine "storage position control", the flowchart shifts to FIG. 11, and the comprehensive identification unit 8 sets the storage area signal (c) to H in the conditional branch "signal (c) is at H level?"
It is checked whether or not it is at the level, and branching to NO is continued until the level becomes H level. Variable power optical system 2 is driven from the position of P ₂ near to P ₀ side branches to YES from the conditional branch at the time of past P _2, the magnification change control unit 21 by the following "zooming motor OFF" Turn off the power to the variable-power motor Mz. However, the variable power motor Mz continues the residual rotation due to inertia. In the next conditional branch comprehensive identification section 8 "signal (c) is L level?", Check the signal level of the similarly housing area signal (c), monitoring the falls to L level past P ₁ doing. I know that led branched in the storage position P ₀ to P ₁ to YES at the time of past P _1, stops the rotation over the electromagnetic brake zooming motor Mz in the "Motor Brake". Then, in the next "set storage flag", the general identification section 8 sets the storage flag SFG, holds the storage flag SFG, and stores that the variable power optical system 2 is at the storage position which is one of the fixed positions. . In RST, the process returns to the main routine of FIG. 6 again, and the area setting operation is completed when END is reached. Note that END from the above “focus drive”
The operation up to is called the storage setting operation.

Now if in (b) macro approximated position, then when the variable power optical system 2 and the brush 6 is in a macro approach position P ₁₁ to P _12, it will be described the setting operation if the storage switch 15 is operated , START in Fig. 6
From the above, the conditional branch “unrecognizable?” In the above-mentioned fixed position check operation is branched to YES, and the variable power optical system 2 is started to be driven to the macro side. The operation is the same as (a). Then, the contents of the conditional branch “macro reach?” In the impossible check loop will be described in a little more detail.
Now, brush 6 from the macro region signal (b) is H level because the P ₁₁ to P _12, comprehensive identification unit 8, a conditional branch "signal (b) is H level?" Branches YES, the in the same manner as described above with the following "zooming motor OFF" cut off the power supply to the zooming motor Mz, next conditional branch since the L level past P ₁₂ "signal (b) is L level?" monitors the , when it reaches the macro position P ₁₂ to P ₁₃ stops the motor by a "motor braking", the next "sets macro flag", sets macro flag MFG, the variable power optical system 2 is a positioned 1 One macro position is stored.
RTS returns to “macro reach?” In FIG. 6 again, and since the macro position has been reached, the flow branches to YES. Now, move on to the next one in Fig. 7, and in the next "Close storage switch?"
The process branches to S, executes “focus drive”, and in the next “drive to telephoto position”, the variable power control unit 21
And brush 6 is a state signal indicating that the receiving switch 15, which is inputted through an area signal (e) and prohibition unit 20 indicating that the macro position P ₁₂ to P ₁₃ is closed (j)
With reference to, and it begins its driving to the telephoto position P ₈ to P ₁₀ of the variable power optical system 2. This operation will be described in detail. In this case, the operation consists of a subroutine (macro escape) in FIG. 13 and a subroutine (tele position control) in FIG. 9. First, the macro escape operation in FIG. then, check the macro area signal variable magnification optical system 2 that has been in the macro position P ₁₂ to P ₁₃ is changed with the driven to the telephoto position side (b), a macro approach position P ₁₁ to P ₁₂ H Once having passed through the part of the level, to reset the macro flag MFG has been set previously, indicate that longer variable power optical system 1 is not in the macro position P ₁₂ to P _13. Turning now to the subroutine of tele position control of FIG. 9, the first conditional branch "signal (b) is L level?" Check that the variable power optical system 2 in is in continuous sections P ₁₀ to P ₁₁ branches to YES, in the next conditional branch "signal (a) is H level", monitors the rise of zooming range signal in the P ₁₀ (a). Branches to YES reaches the P ₁₀ stops the zoom motor Mz, further multiplied by the electromagnetic brake, in "signal (b) is H level?", The macro area signal (b)
Is checked, and the stop position of the variable power optical system 2 is from the tele position P ₈ to
Branches YES is determined that the overrun has occurred if the outer P _10, if within the tele position P ₈ to P ₁₀ branches NO to "brake End?" Branches to YES, "macro direction In the "prohibition", the driving of the magnification changing optical system 2 in the macro direction with respect to the magnification changeover switch 17 is prohibited, and the flow returns to FIG. 7 again by RTS.

The operation after the branching to YES by the occurrence of the overrun is for stopping the overrun on the corrected finally tele position P ₈ to P _10, directly to the subject matter of the present invention Since it does not matter, detailed description is omitted. The operation for this correction is the same in the subroutine (wide position control) in FIG.

Now, returning to the main routine of FIG. 7, the flowchart proceeds from “drive to the tele position” to the next conditional branch “storage switch closed?” (Hereinafter, “focus drive” and “drive to the tele position”). Is referred to as a "teleposition setting operation"). The branches of the conditional branch to YES, the through "focus driving", "driving to the wide position", driving the variable power optical system 2 from the telephoto position P ₈ to P ₁₀ again to the wide position P ₃ to P ₅ side Begin to. The control of stopping at the wide position in this case is performed by a subroutine (wide position control) in FIG. In the conditional branch "signal (c) is at L level?" In FIG. 8, the level of the storage area signal (c) is checked. Since the variable magnification optical system 2 has just been driven, for example, P If it is in the vicinity of ₇ , since it is at the H level, this conditional branch is branched to NO, and the area signal (c) is similarly checked at the next conditional branch "Is signal (c) at L level?" _{At 5} this continues to branch to NO and is monitored. When the variable power optical system 2 reaches the P _5, branches YES to stop the zooming motor Mz, braking. The "signal (a) is L level?" Checks whether zooming range signal in (a) fell standing, that is whether the check is stopped at the wide signal position P ₃ to P ₅ , If overrun has occurred
The flow branches to YES, but in this case, the flow branches to NO indicating that no overrun has occurred. The flow branches to "YES" at "brake end?" Prohibits re-driving. Then, the process returns to the main routine of FIG. 7 by RTS. Now the seventh
And returns to FIG starts in the "drive to the storage position" of the next, the drive from the wide-angle position P ₃ to P ₅ to the storage position P ₀ to P ₂ side,
Control to stop at the storage position is performed by the subroutine of FIG. The operation from the “focus drive” to the “drive to the storage position” through the “drive to the wide position” to the “drive to the storage position” is referred to as “storage setting operation via magnification change”. When the storage setting operation via zooming is completed, the next “Storage switch closed?”
And end the area setting operation with END. That is, the variable power optical system 2 and the brush 6 as can be seen from (b) of the above (i) (i) and (i) is housed close position P ₁ to P ₂ and the identification of regions becomes impossible Macro approach position P
Even in ₁₁ to P _12, by housing the switch 15 is operated, it is once allowed to escape which can identify regions housing continuation period P ₂ to P ₃ and the macro location P ₁₂ to P _13, again, than is the driven position setting in the storage position P ₀ to P _1.

(C) When the zooming optical system 2 and the brush 6 are at the macro positions P _{12 to} P ₁₃
When the storage switch 15 is operated at the time of, the flow chart of the area setting operation at this time is the same as the above in the ST ST of FIG.
Starting from ART, the conditional branch "macro position?"
The operation is the same as the subsequent operation in the above (i) (b).

(D) In the case of the macro continuation section In the area setting operation in this case, the conditional branch “unrecognizable?” In the above-mentioned fixed position check operation in FIG. In the conditional branch “macro continuation section?” To “YES”, and after the next “stop of variable power drive” (in this case, since the variable power motor Mz has not been driven yet, there is virtually nothing. Is not performed), the next condition branch “storage switch closed?” Branches to YES,
The “focus drive” is executed to reach “drive to the tele position”. And then reaches the in finished driving the variable power optical system 2 to the telephoto position P ₈ to P ₁₀ by a subroutine "tele position control" in FIG. 9 described above. Moving to FIG. 7, the "storage switch closed?" Branch to YES, and the same operation as the above-mentioned (i) (b) enclosing-through-magnification setting operation and after this operation.

(E) In the storage continuation section In this case as well, the conditional branch “unrecognizable?” In the home position check operation of FIG. 6 branches to NO and moves to the impossible check loop. Branch to YES, and then go through the next “Stop zooming drive”
Branch to the next condition branch “Storage switch closed?” To YES,
The storage setting operation is performed, and the operation ends.

(F) In the storage position The conditional branch “storage area?” In the home position check operation in FIG. 6 is branched to YES, and the process proceeds to FIG.
Conditional branch “storage switch closed?” Is branched to YES, and the operation ends with END. That is, since the user is already in the storage position, even if the storage switch 15 is operated, nothing is performed as a result.

If when in (g) zooming range variable power optical system 2 is in the zooming range P ₃ to P ₁₀ is the sixth
In the first conditional branch "magnification area?" In the figure, the flow branches to YES, and the process proceeds to FIG. The following operation is the same as the operation after (d) of (i).

Now, an area setting operation when the next Z / M switch 16 is operated will be described for each case according to the current position of the variable power optical system 2 as described above. First, the case where only the macro switch 16b of the Z / M switch 16 is operated (closed) will be described.

(Ii) the macro switch region setting operation by (a) when in a stored approximated position now, the variable power optical system 2 is in the P ₁ to P _2, Here, when the macro switch 16b is operated, the area setting in this case operation begins START of Figure 6, through the "drive to the macro side" the position check operation and proceeds to the non check loop, "housing continued period when the variable power optical system 2 reaches the P ₂ "?" Is branched to YES, and the operation of (f) (a) is the same as that of "(f)" until the "scaling drive stop" is executed. By the way, in the next condition branch "storage switch closed?", Since the storage switch 15 is not operated at this time, the process branches to NO. Here, the process proceeds to FIG. 7, and after performing “focus drive”, the process proceeds to “drive to wide position”. Then, after driving the variable power optical system 2 to the wide position side,
Move to subroutine (wide position control) in the figure. The level of the storage area signal (c) is checked by the first conditional branch “signal (c) is at L level?” In FIG.
Branches YES because the P ₂ slightly in the position only P ₃ side, for the next conditional branch "signal (a) is H level?" Zooming range signal (a) rises at P ₃ monitor branches to YES at the time reaches the P _3, the zooming motor Mz stops, further braked, as the overrun was not a "signal (c) is H level?" to NO, "End brake?"
Branched to YES, magnification changeover switch 1 with "Storing direction prohibited"
Driving in the storage direction for 7 is prohibited, and down switch 1
The deviation of the variable power optical system 2 from the variable power region due to an erroneous operation of 7b is prevented. Then, the process returns to the main routine of FIG. 7 again by RTS. Now, the process returns from the RTS to the main routine of FIG. 7, and proceeds from “drive to the wide position” to the next conditional branch “storage switch closed?”, Branches to NO, and then branches to the next conditional branch “whether the switching is macro. ? ”To YES. After executing “focus drive”, “drive to tele position”
The process proceeds to start again drive the variable magnification optical system 2 from the wide-angle position P ₃ to P ₅ to the telephoto position P ₈ to P ₁₀ side proceeds to the subroutine of FIG. 9 (tele position control). In the first conditional branch “signal (b) is at L level?” In FIG. 9, the level of the macro area signal (b) is checked, and the variable power optical system 2 now has P ₃ .
Branches NO because the P _5, the "housing direction prohibition" as stops the telephoto position P ₈ to P ₁₀ is braked to stop the zooming motor when it reaches the P _8, there was no overrun Then, the driving of the magnification change switch 17 in the same direction is prohibited, and the process returns to the main routine of FIG. 7 by RTS. Seventh
And returns to the main routine of FIG, the following in further driven initiate zooming optical system 2 that has been in the telephoto position to the macro position P ₁₂ to P ₁₃ direction "drive to the macro position", the FIG. 10 Macro position P _{12 to} P by subroutine (macro position control)
Stop at ₁₃ , set the macro flag MFG, and set 7th by RTS
Returning to the diagram, the process proceeds from “drive to macro position” to the next “storage switch closed?”. Then, the flow branches to NO, and the next conditional branch "is the switching macro?" Branches to YES, and the flow proceeds to the subroutine "macro focus" (not shown in a separate sheet). In this subroutine, for example, if a release switch (not shown) is operated, a photographing operation including a focusing operation is executed, and if not, the next END is reached and the area setting operation is ended. In addition, the above-mentioned “focus drive”
The process from driving through to the “telescopic position” to “driving to the macro position” is referred to as “macro setting operation via scaling”.

(B) In case of macro approach position The conditional branch "unrecognizable?" In the fixed position check operation in FIG. 6 branches to YES, the next "drive to the macro side" is executed, and the above impossibility check loop is repeated. During zooming, the variable power optical system 2 reaches the macro position.
Branches to YES. Moving on to FIG. 7, branching to "NO, closing the storage switch?"
The process branches to YES, and the subroutine "macro focus" is followed by END to end the area setting operation.

As described above, the retractable approach position where the variable power optical system 2 cannot be identified.
In the P ₁ to P ₂ and the macro access position P ₁₁ to P _12, even when the macro switch 16b is operated, when in the housing close position, again the macro after temporarily escape identifiable storage continuation interval Position, and if it is in the macro approach position, the position once escaped is the position to be set,
In any case, it can be set reliably.

(C) At the macro position In this case, the conditional branch “macro position?” In the fixed position check operation in FIG.
Move on to the figure. The following operation is the same as after the above (ii) (b).

(D) When in the macro continuation section “Unrecognizable?” In the above-mentioned fixed position check operation is branched to NO, and the process proceeds to the above-mentioned inability check loop, and “Macro continuation section?” In this inability check loop is branched to YES. And
After the "zoom drive stop", the "storage switch closed?"
Branching to the next conditional branch "is the switching macro?" To YES, drive to the next "drive to macro position", and start driving the variable power optical system 2 in the macro position direction. in the subroutine "macro position control" and the subroutine of FIG. 10 to set the variable power optical system 2 to the macro position P ₁₂ to P _13. The subsequent operation is the same as the above operation.

(E) In the storage continuation section “No identification possible” in the home position check operation of FIG.
Branch to the impossible check loop, branch “storage continuation section?” In the impossible check loop to YES, branch to “stop variable magnification drive”, and branch to the next “storage switch closed?” To NO. Then, the process proceeds to FIG. 7, and the “focus drive” and the “drive to the wide position” perform the wide position P _3.
Driven up to P _5, branches follows the "storage switch closure?" To NO, the next "or switching macro?" And branches to YES telephoto from the wide position by following scaling via the macro setting operation After that, the drive is moved to the position, and then to the macro position, and then, as described above, the "storage switch closed" is branched to NO, and the subroutine "macro focus" is reached to END, and the area setting operation is completed.

(F) In the storage position The storage position in the fixed position check operation in FIG.
The process branches to S, and the process proceeds to FIG. The next step of “storing switch closed?” Branches to NO, and the operation is the same as the operation after (e) in (ii).

(G) In the case of being in the variable-magnification area The first conditional branch "magnification area?" In FIG. 6 is branched to YES, and the process proceeds to FIG. Then, the "switching of the storage switch closed?" Is branched to NO, and the "switching is macro?" Is branched to YES. After branching to.

(Iii) Region setting operation by variable power switch Next, the region setting operation when only the variable power switch 16a of the Z / M switch 16 is operated, can be analogized from the above (i) and (ii). Therefore, only one typical case will be described. Naturally, the difference from (ii) is that all of the conditional branches "is switching macro?" In FIGS. 6 and 7 branch to NO.
Also, a subroutine "magnification change focus" in FIG.
The content, although not illustrated in Exhibit, its contents, for example, when the variable power optical system 2 is in the zooming range P ₃ to P _10, the focusing control and the magnification change-over switch 17 of the focusing lens group 3,
The operations include a focus setting operation for setting a focal length, a photographing operation using a release switch (not shown), and the like.

Now, the variable power optical system 2 and the brush 6 are in the storage approaching position P _1.
Located to P _2, where the only variable power switch 16a is operated. In the flowchart, the home position check operation shown in FIG. 6 and the next “driving to the macro side” are executed, and then the flow shifts to the above-described inability check loop. When the brush 6 fell housing area signal through the P ₂ (c) is standing, the "housing continuation interval?" In the unmoving ability check loop branches to YES, run the "scaling driving stop" of the following After that, the next "storage switch closed?" Now, moving to FIG. 7, the following "focus drive" and "drive to the wide side" are performed.
The variable power optical system 2 to set the P ₂ to the wide-angle position P ₃ to P ₅ by. Then, branch to the next “storage switch closed?” To NO, further branch to “NO is switching as macro?” To NO as described above, proceed to the subroutine “magnification focus”, execute a predetermined operation, and then to END. And the operation ends. Note that only the operation results of the other cases will be described.
P ₁₀ to P zooming range as results when in ₁₃ telephoto position P ₈
Is set to to P _10, when in the storage region P ₀ to P ₃ is set to the wide position P ₃ to P ₅ of the zooming range, what of course when in the zooming range P ₃ to P ₁₀ Not even done.

Next, the focus setting operation by the magnification change switch 17, particularly the operation near the boundary of the area, will be described. Therefore, the operation is within the subroutine "magnification / reduction focus" in FIG. Now, the variable power optical system 2 and brush 6
Is located at an arbitrary position in the middle of the variable magnification area. And
For example, assume that the up switch 17b is operated. The switch determination unit 18 outputs a state signal (j) indicating that the magnification is increasing through the prohibition unit 20, and upon receiving the signal, the magnification control unit 21 refers to the area signal (e) to change the magnification. After confirming that the optical system 2 is in the variable power range, the drive of the variable power optical system 2 and the brush 6 to the tele position side via the variable power drive unit 4 is started. The focal length detector 7 A / D converts the input focal length information (Zp) by the A / D converter 7a (Zp).
If the variable power optical system 2 is a vari-focal lens, the calculation unit 7b calculates the shift correction amount and outputs the result as a calculation output (k). In particular, the calculation output (k) is also output to a focus drive unit (not shown), and performs shift correction as appropriate while cooperating with the variable power control unit 21. Now, the stop / reverse determination unit 14 receiving the area signal (e) output from the general identification unit 8 has the reverse signal (g) and the stop signal (g) because the variable power optical system 2 is still in the middle of the variable power area. Neither h) nor the inhibit signal (i) are output. Variable power optical system 2 is driven from the position of the intermediate P ₈
And when the macro area signal (b) falls, the 14th
The subroutine ZMB is started by the interrupt processing shown in the figure.
At this time, the stop / reverse rotation determination unit 14 stores the driving direction immediately before the variable magnification optical system 2 is driven in the internal memory MR. No.
In “Variable motor brake” in FIG.
Border edge detector 10 outputs an area signal (e) which indicates the detection of the P ₈ as one end of the boundary region, the stop / reverse rotation determining unit 14 that has received the which outputs a stop signal (h) of Upon receiving this, the variable power control unit 21 cuts off the power supply to the variable power motor Mz, and then applies the electromagnetic brake. In the next conditional branch “brake end?”, After branching for a predetermined time NO and continuing the braking operation, branching to YES, the next conditional branch “magnification area?”
In step (3), the stop / reverse determination unit 14 receives the area signal (e) and checks whether or not the variable power optical system 2 is located within the variable power area. It determines whether had invaded macro area beyond the P ₁₀ is. Here, it is determined that no overrun has occurred, and the process branches to YES. In the next conditional branch “Is the signal (c) at the L level?”
Branches to NO by checking the level of the housing area signal (c) because it is stopped at the tele position P ₈ to P _10. Then, in the next conditional branch "is signal (b) at L level?", The level of macro area signal (b) is checked and the flow branches to YES. In the next "macro direction prohibition", stop / reverse determination unit
Reference numeral 14 outputs a prohibition signal (h) for prohibiting driving in the same direction (macro position direction) as the immediately preceding driving direction previously stored. Then, the RTI returns to the subroutine "magnification-variable focus" in FIG. Therefore, even if the up switch 17a is operated again in this state, the state signal (j) output from the switch determination unit 18 and indicating the drive in the magnification increasing direction, that is, the drive in the macro position direction, is prohibited by the prohibition unit 20. Are not output to the scaling control section 21. Therefore, there is no deviation from the tele position to the macro area.

By the way, in the above-mentioned conditional branch “magnification area?” In FIG.
The case of branching to NO will be described. That is, this is a case where an overrun has occurred. Therefore, the variable power optical system 2 is located slightly macro region from the other end portion P ₁₀ of the telephoto position.
First, the storage area signal (c) is checked at a conditional branch "signal (c) is at L level?", And because it is at H level, it branches to NO, and at the next "drive in the storage direction", the stop / reverse determination unit 14 The variable power control unit 21 outputs a reverse rotation signal (g), and rotates the variable power motor Mz in reverse. And the next "zoom area?"
P ₁₀ to one that repeatedly check operation branches to NO
The past, the variable power optical system 2 reaches the P ₈ to P ₁₀ is a boundary region, the checking operation for "zooming range?" Branches to YES, again, back to the first of the brake operation, the following Is the same as described above.

Then, in this state, i.e. the variable magnification optical system 2 P ₈ ~
When in the P _10, if the down switch 17b is operated, the variable power optical system 2 is driven from the telephoto position to the wide position, while the operation of the down switch 17b (closed) state continues,該駆dynamic also continued, the variable power optical system 2 reaches the wide-angle position P ₃ to P ₅ of the boundary region, the likewise first
The subroutine ZMB by the interrupt processing of Fig. 14 is started,
The same operation as the above description is executed, the wide position P ₃ to P ₅
The re-driving in the direction of the storage position is prohibited by the "storage direction prohibition" in which the variable magnification optical system 2 is stopped. Note that this prohibition state and the prohibition state in the macro direction are both released when the storage switch 15 or the Z / M switch 16 is operated.

Thus, according to this embodiment, the storage access position becomes impossible to identify the regions P ₁ to P ₂ or macro approximated position P ₁₁ to P ₁₂
Even if the brush 6 is located in the area, the brush is forcibly driven to the macro position side to escape to an identifiable position and the area is identified again, so that the identification pattern section 5 is possible. Despite being composed of the first pattern 5a to the third pattern 5c having as few lines as possible, they are surely set to the storage position in the storage area which is the fixed position, the macro position in the variable magnification area and the macro area. There are advantages that can be done.

After escape from the identifiable position, the area is identified and the status of the switches 15 and 16 is checked, and the variable power optical system 2 is driven in an optimal direction, so that the area can be set quickly. There are advantages.

Also, the brake pattern 31 and the Zp pattern 22 are P _{6 to} P ₇
In duplicate, so further it has an insulating portion P ₇ to P ₈ in the first pattern 5a is overlapped with the brake pattern 31, a variable focus interval P ₅
Ensures that a focal length information (Zp) becomes discontinuous in to P _8, the influence of the insulating section P ₇ to P ₈ for separating Zp pattern 22 and the ground pattern 24 can advantageously be removed.

The identification of each area and each position is performed by the identification pattern unit 5.
Since the detection is performed by the signal output from the device, there is an advantage that the region identification using a mechanical stopper or the like can be performed with high accuracy, and the configuration can be simplified so that the size can be reduced. Further, since the Zp pattern 22 is provided in the first pattern 5a, there is an advantage that the focal length in the variable magnification area can be detected.

Also, the wide-angle position P ₃ to P ₅ and telephoto position P ₈ to P _9, respectively in correspondence with the equilibrium region theta ₅ of the wide side of the equilibrium region theta ₁ and the telephoto side, the zooming area P ₃ to P _10. In the focus setting operation, if the magnification changeover switch 17 is continuously operated even when the variable power optical system 2 reaches the tele position and the wide position which are both ends in the variable power region, the wide position as the boundary region and since the magnification motor Mz upon reaching P ₅ and P _8, which is one end portion of the telephoto position is braked configured to stop, stopping the variable power optical system 2 to ensure border region Therefore, there is an advantage that there is no departure from the variable power range. Further, after reaching the boundary area, driving in the same direction as the driving direction immediately before reaching the boundary area is prohibited, so that, for example, even if there is an erroneous operation or a deliberate operation of the magnification switch 17, the magnification is changed from the magnification area. Double optical system 2
Is not deviated.

Further, when the motor deviates from the boundary area to the storage area side or the macro area side due to the overrun of the variable power motor Mz, it is driven in the direction opposite to the overrun direction and finally stopped in the boundary area. There is an advantage that the variable power optical system 2 does not deviate from the variable power region.

Further, since the boundary region corresponds to the equilibrium region, there is an advantage that the focal length does not change even if the boundary region stops at any position in the boundary region.

It should be noted that the present invention is not limited to the above-described embodiment,
Various modifications can be made without departing from the scope of the invention.

For example, the position of P ₀ and P ₁₃ is an end of the housing position P ₀ to P ₁ and the macro location P ₁₂ to P ₁₃ may be features a mechanical stop.

Further, the pull-up resistors 13 and 19 may be omitted if they are already provided inside the general identification section 8 and the switch determination section 18, respectively.

The input of the stop / reverse determination unit 14 is not limited to the area signal (e), and is configured to directly receive the magnification area signal (a), the macro area signal (b), and the storage area signal (b). You may.

Also, housing area P ₀ to P ₃ and the macro area P ₁₀ to P ₁₃ are
The wide positions P _{3 to} P ₅ and the tele position P _{8 in the} variable power range, respectively.
Not limited to being connected to to P _10, it may be connected respectively to the opposite side. The point is that the storage area may be connected to the side of the variable-magnification optical system 2 where the moving amount of the variable power optical system 2 is small.

(E) Effects As described in detail above, according to the first aspect, when the variable power optical system that can be set in a plurality of areas is located in an indistinguishable area, this variable power optical system is forcibly applied. Since the configuration is such that the area is searched and the current position is identified and the current position is identified, the apparatus is driven to the specified area. According to the second aspect of the present invention, it is possible to quickly and surely set the variable power optical system to a designated area with an inexpensive and simple configuration. The boundary region of the length is made to correspond to the equilibrium region where the position on the optical axis of the lens group does not change, the variable power optical system is stopped in the boundary region, and driving in the same direction as the driving direction immediately before the stop is performed. Prohibition, and when the boundary area is overdriven, drive in the opposite direction and finally Since it is configured to stop in the boundary area, it is possible to reliably stop in the boundary area with a simple configuration without using mechanical stopping means, and to stop at any position in the boundary area. Also, it is possible to provide a variable power optical system control device which does not cause a stop position shift of the variable power optical system.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of a variable power optical system control device according to the present invention, and FIG. 2 is a pattern showing the identification pattern portion of the embodiment shown in FIG. Figure,
FIG. 3 is a timing chart showing operation waveforms of respective parts in FIG. 1, FIG. 4 is a cam diagram showing mechanical characteristics of the variable power optical system in FIG. 1, and FIG. FIGS. 6 to 14 are development views of the cam groove specifically showing the mechanical characteristics shown in FIGS.
All are flowcharts showing the operation sequence of the embodiment shown in FIG. 1, in which FIGS. 6 and 7 are main routines showing the entire operation sequence, and FIGS. 8 to 14 are subroutines used in the main routine. FIG. 8 shows the wide position control, FIG. 9 shows the tele position control,
FIG. 10 shows the macro position control, FIG. 11 shows the storage position control, and FIG.
FIG. 13 shows escape from the storage position, FIG. 13 shows escape from the macro position, and FIG. 14 shows stop control (ZBM) by interrupt processing. DESCRIPTION OF SYMBOLS 1 ... Optical axis, 2 ... Magnification optical system, 2a, 2b, 2c, 2d, 2e ... 1st group lens-5th group lens, 3 ... Focusing lens group, 4 ... Magnification drive part , 5 ... identification pattern part, 5a, 5b, 5c ... first pattern to third pattern, 5d ... power supply terminal, 5e, 5f, 5g, 5h ... output terminal, 5i ... ground terminal, 6 ... Brush, 6a, 6b, 6c: Contact point, 7: Focal length detection unit, 8: General identification unit, 9: Mode detection unit, 10: Boundary end detection unit, MFG: Macro position flag, SFG ... ... storage position flag, 11 ... disabled part, 12 ... search part, 13, 19 ... pull-up resistor, 14 ... stop / reverse rotation determination part, MR ... internal memory, 15 ... storage switch, 16 ... … Magnification / macro changeover switch (Z / M changeover switch), 17… magnification changeover switch, 18… switch judgment section, 20… prohibition section, 21… magnification change control section, + V… power supply.

Claims (2)

(57) [Claims] 1. A variable-magnification lens group and a focusing lens group which are arranged on the same optical axis, and have a variable-magnification area in which a focal length can be changed, a macro area in which macro photography can be performed, and each of the lens groups. In a variable power optical system control device having a variable power optical system that can be arbitrarily set to any of a plurality of areas such as storage areas for storing at predetermined positions, identification corresponding to the setting area of the variable power optical system Area identification information generating means for generating information and generating identification information in which the setting cannot be identified in at least a part of the area; and a variable power driving the variable power optical system to set the desired area. Driving means, scaling control means for controlling the scaling driving means, and receiving and decoding output information from the area identification information generating means to set the scaling optical system to any of the plurality of areas. Area identification to identify A step, receiving the output information, decoding the received information, and outputting an impossibility signal when the discrimination information is improper identification information; and An area search means for driving the variable power optical system through the variable power control means until the output is no longer output, and an externally operable area setting instruction means for separately instructing the setting of the area. A variable-power optical system control device, wherein the variable-power optical system is set in the specified area. 2. A variable-magnification lens group and a focusing lens group, which are arranged on the same optical axis, and have a variable-magnification area in which the focal length can be changed, a macro area in which macro photography can be performed, and each of the lens groups. In a variable power optical system control device having a variable power optical system that can be arbitrarily set in any of a plurality of areas such as storage areas for storing at predetermined positions, a predetermined length is set at a boundary between adjacent areas. Area identification information generating means having a boundary area and generating identification information corresponding to an area in which the variable power optical system is set; externally operable drive instruction means for instructing driving of the lens group; The variable magnification optical system is driven to set the optical system in any one of the above areas, and an area corresponding to the boundary area has an equilibrium area where the position on the optical axis of the lens group does not change even by the driving. Variable power drive means and the drive A magnification control means for controlling the magnification driving means in response to an instruction from the instruction means, and receiving and decoding output information from the area identification information generating means to allow the magnification optical system to select one of the plurality of areas; Area identification means for identifying whether or not the setting has been made; boundary edge detection means for detecting one end and the other end of the boundary area; and the lens group driven by the instruction of the drive instruction means being located outside the boundary area. Output the stop instruction signal to stop the drive to the variable power control means when the lens group reaches the one end of the boundary area from the other end, and determine the direction in which the lens group was driven immediately before outputting the stop instruction signal. When the lens group passes through the one end and moves inward of the boundary area after a predetermined time, and is stored as the immediately preceding drive direction and passes through the other end and stops outside the boundary area, the reverse is performed. Drive A stop determination unit that outputs a prohibition instruction signal when the lens group stops inside the boundary area, and a drive determination unit that outputs the prohibition instruction signal during the period when the prohibition instruction signal is output. Prohibiting means for prohibiting a driving instruction in the same direction as the immediately preceding driving direction that is output, wherein the variable power control unit that receives the reverse driving instruction signal causes the lens group to move in a direction opposite to the immediately preceding driving direction. A variable-magnification optical system control device, which is configured to be driven to stop the lens group inside the boundary area.