JP3076451B2 - Automatic video display system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the use of a system alone in the visual appearance inspection of a printed circuit board or an object subjected to fine processing assembled using a minute portion, or a method for inspecting a real-time image of the object. Inspection as
Portion of the resulting visual inspection system having a function of point-by-point recorded in the database on a computer from an input device (e.g., see JP Gantaira 04-188524 of Jitsugantaira 4-24234 and 1992 June 8 filed) An automatic appearance inspection system that has the function of using the system as an image or pre-registering the appearance image of the inspection object as image data of a computer in advance, and comparing the image projected by the camera with the data and automatically determining the consistency thereof. The present invention relates to an automatic image display system which is used as a partial system or used when an object such as a photographing or projection film is partially enlarged from above to photograph or project.

[0002]

2. Description of the Related Art Conventionally, as a system for photographing or projecting an object and automatically displaying an image of the object, a so-called automatic focusing camera in which a camera and a magnifying lens are integrally formed, or a camera and a magnifying lens are used. It was possible to configure the system by arranging them individually.

In the case of using an automatic focusing camera, a camera portion of the camera is fixed, and a magnifying lens portion to which a pinion gear is fixed is driven and moved by driving a rack gear to set photographing or projection magnification. It was possible to manufacture a system that employs a mechanism in which the camera section automatically performs focusing at the magnification, and operates the mechanism by connecting the mechanism to a computer.

Further, as a method of separately arranging the camera and the magnifying lens, a pinion gear is fixed to the camera and the magnifying lens, and the camera and the magnifying lens are individually moved using a rack gear for each pinion gear. As a result, it was possible to manufacture a system that employs a mechanism for setting a shooting or projection magnification and performing focusing at the magnification, and operating the mechanism by connecting the mechanism to a computer.

[0005]

In the former system described in the prior art, when an object is photographed or projected from a vertical direction, that is, from above the object, setting of a photographing or projection magnification and a focus at the magnification are performed. Prior to starting the shooting or projection work after performing the alignment, it is necessary to have a stopper mechanism that operates to prevent the magnifying lens unit from moving down toward the object due to its own weight and being out of focus during the work. there were.

Further, in the latter system, it is necessary to have a stopper mechanism for performing the same operation as described above for both the camera and the magnifying lens.

A stopper as described above as part of the system
The provision of such a mechanism complicates other mechanisms constituting the system and increases the size of the system, thereby increasing the manufacturing cost. further,
Operations related to system operation, operation, and maintenance also had to be complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object the function of individually moving a camera and a magnifying lens in the vertical direction, without operating a special mechanism. A camera focusing mechanism using a vertical drive unit having a function of holding them in the moved position (Japanese Utility Model Application No. 04-3969 filed on April 27, 1992)
By adopting No. 6) in the system, the stopper mechanism as described above is eliminated to realize the mechanical and physical simplification of the system and to reduce the manufacturing cost thereof, and to operate, operate and maintain the system. It is intended to simplify the work.

Further, the work performed using the photographing or projection conditions including an imaging or projection magnification, by Rukoto to operate automatically in conjunction with each drive mechanism constituting the system to one another, the system, in particular said object It is an object of the present invention to provide an automatic image display system capable of improving the work efficiency and improving the stability and accuracy of the work result in the work of shooting or projecting the image from the vertical direction.

[0010]

In order to achieve the above object, an automatic image display system according to the present invention comprises an XY table moving in an arbitrary horizontal direction, a horizontal drive unit for driving the XY table, and an XY table. A camera and a magnifying lens for photographing or projecting an object, and a vertical drive unit having a function of moving the camera and the magnifying lens in the vertical direction and holding them at the moved position in order to focus the camera, respectively. A display for displaying a real-time image of the object, a control unit having a function of controlling operations of a horizontal drive unit and a vertical drive unit and recording or processing various information related to the object,
And the vertical drive units extend in a vertical direction in parallel with each other.
The camera can be moved to a pair of rotating axes
Camera moving unit attached to the
A lens moving unit for movably mounting a large lens
By rotating one of the rotating shafts,
The rotation of the axis moves the camera vertically through the camera movement unit.
To drive this camera vertically.
Together with one of the rotating shafts in the rotating direction.
Allows the camera to move through the camera
The camera drive that holds it in the vertical position and the other rotation axis
By rotating, the rotation of this rotating shaft is
Transmitted as a vertical movement of the magnifying lens
Then, while driving this magnifying lens in the vertical direction,
By holding this other rotation axis in the rotation direction,
The lens is moved in a predetermined vertical direction via the lens moving unit.
And a lens drive unit for holding the lens drive unit at a position .

[0011] Further , the invention according to claim 2 provides the display with
The number of real-time images to be displayed,
Shooting or video magnification, display order, display time, etc.
Or projection conditions can be set arbitrarily for each shooting or projection object.
Functions that can be set or changed, and
And the drive units that make up the system are linked
And a function to operate with.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the accompanying drawings showing an embodiment thereof. The present embodiment relates to a case where a visual inspection is performed using the system according to the present invention by itself. Further, the inspection object includes the printed wiring board 28.
The computer 2 is used for the control unit, and the vertical drive unit having the camera focusing function is the gear 10,
12 and motors 8 and 9 and a camera
5 and magnifying lens 6 are moved in the vertical direction, respectively.
In addition, it has a function to hold them in the moved position.
You.

In FIG. 1 through FIG.
Stores a control program for controlling the present system. The program has a function of arbitrarily recording or changing information on a printed wiring board 28 to be inspected and a portion mounted on the printed wiring board 28. Function for arbitrarily setting or changing the projection location, projection magnification, projection sequence, and projection time for each board, and driving the horizontal drive unit 3 and the motors 8, 9 based on the data to focus the XY table 4 and the camera. And a function of issuing a signal to drive the mechanism.

In order to perform a visual inspection using the present system, the following basic data and drive data are registered or changed prior to the inspection.

First, a control program is executed to obtain information such as the size of a printed wiring board to be inspected, a part number of each part on the board, coordinate data, a circuit symbol, and other unique data of each part. Is registered in the computer as basic data.

Next, the XY table and the camera focusing mechanism are operated in the manual mode on the control program, and the projection location on the substrate, the projection magnification of the location, the projection order, and the projection time are registered or changed for each projection location. I do. That is, in FIG. 1, the printed wiring board 28 is placed on the XY table 4, and the XY table 4 is arbitrarily moved while watching the image displayed on the display 1 to determine the projection location. Subsequently, the position of the magnifying lens 6 is moved to determine the projection magnification, and the camera 5 is moved to a position where the image is focused at the magnification. After that, the projection order and the projection time for each of the determined projection locations are input from a keyboard or the like connected to the computer 2. By repeating these operations as many times as necessary, drive data for each printed wiring board is created and registered.

During the above operation, the control program determines how much the position of the XY table at the projection location has moved relative to the reference point or the location at the projection location in the immediately preceding projection order. In addition, the drive data is created in order to calculate how much the positions of the magnifying lens and the camera are moved symmetrically with respect to the reference position or the positions at the immediately preceding projection position in the projection order. It becomes possible.

After registering the basic data and the driving data,
When the visual inspection is started by operating the system in the automatic mode in the control program, the XY table and the camera focusing mechanism perform the following operations based on the signals issued by the control program based on the drive data.

In FIG. 1, FIG. 2 and FIG. 3, the horizontal drive unit 3 receiving the above signal is fixed on the XY table 4 and the XY table 4 to display the image of the first image portion on the display 1. The printed wiring board 28 is moved from the position shown in FIG. 2 to the position shown in FIG. On the other hand, the motor (lens drive unit) 8 for the magnifying lens 6 which has also received a signal from the control program, moves the magnifying lens 6 to a position where the projection magnification set at the projection location is obtained in FIGS. Movably to the rotating shafts 18 and 19
The lens moving unit 21 and 23 for applying, to each other
Along the axis of the rotating shafts 18 and 19 extending in parallel and in the vertical direction.
Thus, one of the rotating shafts 18 is rotationally driven by a required number in a required direction in order to move in the vertical direction . Similarly, a motor (camera driving unit) 9 for the camera 5 is mounted so that the camera 5 can be moved to the rotating shafts 18 and 19 to a position set to focus at the projection magnification of the projection location.
The order of the lens moving unit 20 and 22, the rotary shaft 1
To move vertically along the axial direction of 8, 19,
The other drive shaft 19 is rotationally driven by a required number in a required direction.

For example, when an image to be displayed on a display is first sent from an image at an arbitrary projection position to an image at a projection position set to a magnification higher than the projection magnification at the position, the situation shown in FIGS. , Motors 8 and 9
The gears 11 and 13 are rotated through the gears 10 and 12 in a direction opposite to the clockwise direction when viewed from above. Further, this rotation is performed via the rotating shafts 18, 19 and the moving units 20, 21, 22, 23 via the moving plates 24, 2.
5, 26, 27 are transmitted as vertical movements,
The magnifying lens 6 and the camera 5 connected to 4, 25, 26, 27 move downward, and are stopped and held at the positions shown in FIGS.

When the image is to be sent to the image at the projection location where the projection magnification is set low, the motors 8 and 9 rotate in the opposite direction to the above example, and the magnifying lens 6 and the camera 5 move upward.

During the execution of the automatic mode on the control program, the present system, based on the driving data, displays the images of the set projection locations on the display in sequence under the conditions set for each location. The following operation is performed.

As described above, one embodiment of the present invention has been described with reference to the drawings. However, the present invention is not limited to the embodiment, but can be implemented with various modifications. is there.

For example, in order to make it possible to set a wider range of projection magnification, the column can be provided with a telescopic mechanism, and the mechanism can be controlled by a control program in combination with a horizontal drive unit and a vertical drive unit. It is.

It is also possible to use a plurality of sets of camera focusing mechanisms, and to control the operation of each vertical drive unit of the sets. In this case, it is possible to add a function of dividing the display portion of the display into a plurality and displaying a plurality of images at the same time, and a function of arbitrarily selecting the images to be displayed.

Also, a function of displaying an image of an arbitrarily designated portion on a display one by one using the information on the printed wiring board and components mounted thereon, that is, the basic data described above, It is also possible to add a function of irradiating.

Further, the following functions can be added singly or in combination.

First, in setting or changing the drive data described above, the relative position of the camera with respect to an arbitrary position of the magnifying lens on the guide rail is registered in advance, so that the camera can be moved to move the magnifying lens. A function that always moves and focuses on the projection.

Second, a function of arbitrarily switching between an automatic mode and a manual mode.

Third, in both the automatic mode and the manual mode, a function of arbitrarily moving forward or backward a projection position, a function of changing a projection magnification one by one, and automatically adjusting a projection focus accordingly.

Fourth, a function for temporarily stopping the automatic mode.

Fifth, a mechanism for automatically operating various cameras used in the present system, and a function for operating the mechanism in cooperation with other mechanisms.

Sixth, a function of printing the video displayed on the display one by one and a function of recording the video data as video data and displaying the video data arbitrarily on the display.

Seventh, a function of reading data created by another system and using the data to create basic data and drive data of the present system, and automatically creating drive data based on the read data. function.

[0035]

Since the present invention is configured as described above, it has the following effects.

First, vertical drive for camera focusing
The camera and magnifying lens are independent of each other
Driven direction, can be held, is to eliminate a special mechanism to hold the position of the camera and magnifying lens
Accordingly , the mechanical and physical simplification of the system can be realized, the manufacturing cost can be reduced, and the operation, operation, and maintenance of the system can be simplified and facilitated .

Second, conditions such as shooting or projection magnification for each shooting or projection location, image display order on the display, image display time, and the operation of each drive mechanism constituting the system are mutually linked. are possible Rukoto is operated automatically, the work of photographing or projection of an object, improved particularly in work of photographing or projection of said object from the longitudinal, stability and accuracy of the work result improves the working efficiency be able to.

Thirdly, the operator can concentrate on only the work because the video in the range in which the work is most easily performed can be provided to the worker at any time without any trouble of the worker in the shooting or the projection magnification and the sequence in which the work is most convenient. And contributes to prevention of erroneous work and improvement of work results.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the configuration of a system.

FIG. 2 is a plan view of a horizontal drive unit showing an operation of an XY table.

FIG. 3 is a plan view of a horizontal drive unit showing an operation of an XY table.

FIG. 4 is a side view of a camera focusing mechanism partially seen through;

FIG. 5 is a side view of a camera focusing mechanism partially seen through;

FIG. 6 is a front view of a main part of a driving mechanism of the camera focusing mechanism.

FIG. 7 is a front view of a main part of a driving mechanism of the camera focusing mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Display 2 ... Computer 3 ... Horizontal drive part 4 ... XY table 5 ... Camera 6 ... Magnifying lens 7 ... Bellows 8, 9 ... Motor (lens drive part, camera drive part) 10, 11, 12, 13 ... Gear 14 ... Post 15: Back plate 16, 17: Guide rail 18, 19: Rotating shaft 20, 21, 22, 23: Moving unit 24, 25, 26, 27: Moving plate 28: Printed circuit board 29, 30, 31, 32 ... stopper

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G09G 5/00 G01N 21/84 G06T 1/00 G06T 7/00 H04N 7/18

Claims (2)

(57) [Claims] 1. An XY table that moves in an arbitrary horizontal direction, a horizontal drive unit that drives the XY table, a camera and a magnifying lens that photograph or project an object on the XY table, and a camera for focusing. a vertical driving unit that have a function of holding them in position after the movement as well as moving the camera and magnifying lens to each vertically, a display for displaying real-time video of the object,
A control unit that controls the operation of the horizontal drive unit and the vertical drive unit and has a function of recording or processing various information related to the object . The vertical drive unit includes a moving unit of the camera and the expansion unit.
Extends vertically with large lens moving unit
Axis and a camera for driving the moving unit of the camera in the axial direction.
Drive the camera drive unit and the lens moving unit in the axial direction.
An automatic video display system , comprising: a moving lens drive unit . 2. The shooting or projection conditions such as the number of real-time images to be displayed on the display, the shooting or image magnification in each shooting or image, the display order, and the display time can be arbitrarily set or changed for each shooting or projection object. function and automated image display system according to claim 1, on the basis of the set or changed, and further characterized by having a function of Ru to operate automatically in conjunction with the drive units constituting the system to one another.