JP3134965B2 - How to display the expected finish image of the eyeglass lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying a processed image of a spectacle lens for displaying an image in anticipation of a processed state of the spectacle lens, and more particularly, to spectacles for displaying an image based on data from an ordering side of the spectacle lens. The present invention relates to a method for displaying a predicted image of a processed lens.

[0002]

2. Description of the Related Art Conventionally, when a peripheral part of a lens is automatically ground by a spectacle lens processing machine into a shape that can be fitted to the inner peripheral surface of a lens frame of a spectacle frame, the edge finishing processing of a lens to be processed is performed. A method of displaying an expected shape is disclosed in
No. 135709 and JP-A-3-135710. In these techniques, the front lens refraction surface position, the bevel apex position, and the rear lens refraction position of the peripheral portion of the edge-finished lens are displayed as side images and cross-sectional images viewed from a predetermined or desired direction. The shape of the bevel apex position, the lens refraction surface, and the like at the periphery of the finished lens can be confirmed.

[0003] Separately from these, JP-A-60-156
According to Japanese Patent No. 23 gazette, the external shape of a spectacle lens to be framed by a spectacle adjusting device is graphically displayed, and the weight and the edge thickness of the spectacle lens are numerically displayed to predict the external shape of the spectacle lens having a rimmed finish. A disclosed technique is disclosed.

[0004]

However, Japanese Patent Application Laid-Open No. Hei 3-1
The techniques disclosed in JP-A-35709 and JP-A-3-135710 are intended to display only the peripheral portion of the lens, and are displayed so that the state of the curve on the front surface and the rear surface and the thickness of the lens can be easily understood. I didn't.

On the other hand, the technique disclosed in Japanese Patent Application Laid-Open No. Sho 60-15623 displays only the outer shape of a lens or a frame. The thickness was not displayed for easy understanding. Further, the relationship between these portions and the bevel position is not displayed.

[0006] For this reason, conventionally, it was not possible to make a sufficient prediction of the shape of the edge-finished lens in detail. The present invention has been made in view of such a point, and an object of the present invention is to provide a method for displaying an expected finished image of a spectacle lens that can easily and in detail confirm an expected shape of a finished edged lens. And

[0007]

According to the present invention, in order to solve the above-mentioned problems, a processing finish prediction of a spectacle lens for displaying an image by predicting a processing finish state of the spectacle lens based on data from an ordering side of the spectacle lens. In the image display method, input the processing conditions such as the type of eyeglass lens, prescription value, frame shape information, layout information, bevel position, bevel type, etc., from the processing conditions, the shape of the lens surface and the back surface of the lens, the lens thickness, Calculate the finished shape of the edging process such as the shape of the peripheral portion of the lens and the like, create an expected three-dimensional view of the spectacle lens based on the calculated finished shape of the edging process, and place the expected three-dimensional view on the front and rear surfaces of the lens. A method is provided for displaying an expected processed image of a spectacle lens, wherein an image is displayed by adding an auxiliary line along the line.

Further, in the method for displaying an image of expected finish of a spectacle lens based on data from the ordering side of the spectacle lens, the type of spectacle lens, prescription value, frame Input the processing conditions such as shape information, layout information, bevel position, bevel type, etc., and calculate the edge finishing processing shape such as the shape of the lens front surface and lens back surface, the lens thickness, and the lens peripheral shape from the processing conditions. Preparing an expected three-dimensional view of the spectacle lens based on the calculated edge finishing processing shape, and displaying an image of an expected cross-sectional shape of a portion specified by an operator, A display method is provided.

[0009]

[Function] The processing conditions such as the type of eyeglass lens, prescription value, frame shape information, layout information, bevel position, bevel type, etc. are input, and based on the processing conditions, the shape of the front and rear surfaces of the lens, the lens thickness, and the periphery of the lens. Computes the finished shape of the rimming process such as the part shape, creates a predicted three-dimensional drawing of the spectacle lens based on the calculated finished rimming shape, and adds auxiliary lines along the front and back surfaces of the lens. To display an image.

Further, processing conditions such as the type of eyeglass lens, prescription value, frame shape information, layout information, bevel position, bevel type, and the like are input, and from the processing conditions, the shape of the front and rear surfaces of the lens, the lens thickness, and the lens. The edge finishing shape such as the peripheral edge shape is calculated, a predicted three-dimensional view of the spectacle lens is created based on the calculated edge finishing shape, and the expected cross-sectional shape of the portion specified by the operator is displayed as an image.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is an overall configuration diagram of a spectacle lens supply system. An eyeglass store 100 on the ordering side and a factory 200 of a lens maker on the lens processing side are connected by a public communication line 300. Although only one optician is shown in the figure,
Actually, a plurality of eyeglass stores are connected to the factory 200.

An eyeglass store 100 is provided with an online terminal computer 101 and a frame shape measuring device 102. The terminal computer 101 includes a keyboard input device and a CRT screen display device, and is connected to a public communication line 300. To the terminal computer 101, spectacle lens information, prescription values, and the like are input from a keyboard input device, and actually measured and calculated spectacle frame frame information is input from a frame shape measuring device 102, and the data is transmitted to a public communication line. Factory 2 through 300
00 is transferred to the mainframe 201 online. The terminal computer 101 and the mainframe 2
01, a relay station may be provided. Ma
For the installation location of the terminal computer 101,
It is not limited to the store 100.

The main frame 201 includes a spectacle lens processing design program, a bevel processing design program, and the like. The main frame 201 calculates a lens shape including a bevel shape based on input data, and outputs the calculation result via the public communication line 300. And returns the result to the terminal computer 101 for display on the screen display device.
Via the LAN 202.

A roughing machine (curve generator) 211 and a sanding grinder 212 are connected to the terminal computer 210, and the terminal computer 210 operates according to the calculation result sent from the main frame 201.
And the sanding grinder 212 are controlled to perform the curved surface finishing of the back surface of the lens whose surface has been processed in advance.

The terminal computer 220 is connected to a lens meter 221 and a thickness gauge 222, and the terminal computer 220 sends the measured values obtained by the lens meter 221 and the thickness gauge 222 to the terminal computer 220, and sends the measured values from the main frame 201. By comparing the calculated result with the calculated result, the acceptance inspection of the lens whose curved surface is finished on the back surface of the lens is performed, and a mark (three-point mark) indicating the optical center is given to the passed lens.

The terminal computer 230 has a marker 23
1 and the image processor 232 are connected, and the terminal computer 230 determines a blocking position at which the lens should be blocked (held) at the time of edging and beveling of the lens according to the calculation result sent from the main frame 201. And is used to provide a blocking position mark.
The jig for the block is fixed to the lens according to the blocking position mark.

The terminal computer 240 is connected with an NC-controlled lens grinding device 241 including a machining center and a chuck interlock 242. The terminal computer 240 performs edge trimming of the lens according to the calculation result sent from the main frame 201. And beveling is performed.

The terminal computer 250 is connected to a bevel vertex shape measuring instrument 251.
In the case of “0”, the bevel processing of the beveled lens measured by the shape measuring device 251 is compared with the calculation result sent from the main frame 201 to determine whether or not the processing is successful.

The flow of processing until a spectacle lens is supplied in the system having the above configuration will be described below with reference to FIGS.
This will be described with reference to FIG. In addition, the flow of this processing includes
There are two types, “inquiry” and “order”. In “inquiry”, the spectacles shop 100 sends a notification to the factory 2 so as to notify the expected lens shape at the completion of lens processing including beveling.
00, and “order” means that the spectacle store 100 requests the factory 200 to send a lens before edging or a beveled lens.

FIG. 3 is a flowchart showing the flow of the first input processing in the eyeglass store 100. In the figure, the numbers following S represent step numbers. [S1] The lens order inquiry processing program of the terminal computer 101 of the eyeglass store 100 is started, and the order entry screen is displayed on the screen display device. Optician 100
The operator designates the type of lens to be ordered or inquired by using the keyboard input device while viewing the order entry screen.

FIG. 6 is a diagram showing an example of an order entry screen used for designating the type of the lens. That is, the type of lens is specified in the column 61. In other words, the manufacturer
Enter the product classification code on the
Refractive index, coating, lens color, lens surface light
The scientific design, outer diameter, etc. can be specified. In the case of an inquiry, two types of lenses can be designated. In the “form” of column 65, the lens to order or make an inquiry is
Specify whether the lens is a beveled lens (HELP) or a lens that is not subjected to edging and beveling. In “METS processing” in the column 65, a processing specification for designating the lens thickness to be a necessary minimum value, a processing specification for designating a chamfer for making the edge of the minus lens inconspicuous and a polishing finish for the part are specified. Do.

In the order entry screen shown in FIG. 6, a soft key menu 66 is displayed at the bottom of the screen. Here, a transmission key 66a for transmitting data registered on the screen and a registration key 66 for registering data input on the screen
b, order key 66 for switching the screen to the order screen
c, a clear key 66d, a page designation key 66e, and an end key 66f indicating the end of registration are displayed. These soft keys are selected and designated by function keys on the keyboard of the terminal computer 101.

[S2] In column 61 of FIG. 6, the color of the lens is specified. [S3] the spherical refractive power of the right and left eyes in the left column of the column 62 in FIG. 6, a circle
The lens prescription values such as the column refractive power, the astigmatic axis, and the addition are input. Similarly, the right column of the column 62 indicates the lens processing designation value, the column 63 indicates the spectacle frame (frame) information, and the column 64 indicates the column frame information. Layout information , for example, PD, NPD (near PD), SEG (S
EGMENT small ball position), ET (minimum edge thickness), EP
(Eye point) , including bevel mode, bevel position
Enter the bevel shape. The layout information specifies an eye point position which is a pupil position on the eyeglass frame . Eyeglass frame information is provided by the manufacturer's product classification symbol and frame.
Flames such as size, frame material, color, shape, lens type, etc.
In the case of "inquiry", if only one type of lens is specified in step S1, up to two types of spectacle frames can be specified.

On the order entry screen, "processing 1" to "processing"
"4" is a part for inputting general machining designation.
Alternatively, as the lens processing specification value, it is possible to input various specification values such as lens thickness, edge thickness, prism, eccentricity, outer diameter, and lens surface curve (base curve). The bevel mode depends on where you make the bevel on the lens edge.
There are “1: 1”, “1: 2”, “convex”, “frame”, and “auto bevel” modes, which are selected and input. Here, “convex” is a mode in which a bevel is formed along the lens surface (front surface).

The input of the bevel position is effective only when the bevel mode is “convex”, “frame-like”, or “auto bevel”, and the position of the bottom of the bevel on the front surface side is located in the direction of the back surface from the lens surface. Is specified in units of 0.5 mm.

The bevel shape is selected and input from "standard bevel", "combination bevel (combination frame bevel)", "grooving" and "flat sliding". The “combination bevel” is specified when a decorative member is provided on the frame and the lens hits the decorative member. "Grooving",
"Smoothing" is also specified here.

[S4] It is determined whether or not the frame shape measurement by the frame shape measuring device 102 in FIG. 2 has already been completed for the frame specified in the column 63. If completed, the process proceeds to step S7, and if not completed, the process proceeds to step S5.

[S5] First, in the terminal computer 101 of the spectacle store 100, processing is passed from the lens order inquiry processing program to the frame shape measurement program. Then, the user inputs the measurement number assigned to the spectacle frame whose shape is to be measured. In addition, the material of the frame (metal, plastic, etc.) is specified, and further, whether or not the frame can be bent is specified. The material of the frame is used in the calculation in step S12 as a parameter for correcting the peripheral length of the bevel apex in accordance with the material so that the lens fits into the frame when the lens is framed. If it is specified that the frame cannot be bent, and if it is not possible to frame the lens without bending the frame, the eyeglass store 100
An error is displayed on the screen display device of the terminal computer 101.

[S6] The eyeglass frame to be measured is fixed to the frame shape measuring device 102, and the measurement is started. The frame shape measuring device 102 makes the tracing stylus come into contact with the bevel grooves of the right and left frames of the spectacle frame, rotates the tracing stylus about a predetermined point to measure the polar coordinate values of the shape of the bevel groove three-dimensionally, Get. Next, in some cases, the data is smoothed, and the frame curve CV, the circumference L of the bevel groove, the frame PD (interpupillary distance) are obtained.
FPD, frame nose width DBL, A size and B size which are the maximum width of the frame frame left and right and up and down, and effective diameter E
D, Calculate the tilt angle TILT, which is the angle between the left and right frame frames. Then, the frame shape measuring device 102 sends the calculated data to the terminal computer 101,
Display on the screen display device. If there is a large disturbance in the data or a large difference between the left and right frame frames, an error message to that effect is displayed on the screen display device.

FIG. 7 shows an example of a frame shape measurement result screen displayed on the screen display device. That is, a diagram (display 72, display 73) showing the bevel groove shape of the frame made of a metal material (display 71) as viewed from the top and front, and the above calculated values (display 74) of the left (L) and right (R) are shown.
Is displayed.

At the bottom of the screen, a soft key menu 75 is displayed. Here, the soft key menu 75 includes an RL display key 75a for selecting a screen for displaying both RL lenses as shown in FIG. 7, and an overlapping screen for selecting a screen in which one lens is placed on the other side and overlapped with the other lens. A matching screen selection key 75b and a return key 75c for returning to the initial screen are displayed.

At the spectacles store 100, when an error message indicating that there is a large disturbance in the data is displayed on the screen display device, there is no fixed substance in the frame groove, the seam of the frame is displaced, or Check that the measurement is not performed with the gap left, and perform the measurement again. Also,
If an error message indicating that there is a large difference between the shapes of the left and right frame frames is displayed on the screen display device, if the difference is acceptable, enter a confirmation to confirm that the difference can be accepted. If not, the frame shape may be corrected by hand and measured again, or the average of the left and right shapes may be obtained by calculation, and a merging specification may be input using this as the frame shape value. Is also good.

[S7] If the frame shape has already been measured, the measurement number assigned to the spectacle frame is input in order to read out the measurement values stored in advance. [S8] According to the measurement number, the stored frame shape information of the corresponding spectacle frame is read from the internal storage medium. By the above steps S1 to S8, the spectacle lens
Information, glasses frame information, prescription values, layout information, processing instructions
At least one of the processing information is transmitted.
Is done.

[S9] Column 6 on the order entry screen in FIG.
At 0, the user designates “inquiry” or “order”. Data such as lens information, prescription values, and frame information obtained by executing the above steps are sent to the main frame 201 of the factory 200 via a public communication line. While the transmission is being performed, the terminal computer 1 of the optician 100
01 indicates that transmission is in progress. When ordering lenses, group transmission can be used, in which a maximum of, for example, 15 items can be transmitted at a time and transmission time can be reduced. In the group transmission, a procedure of confirming the contents of each order one by one, temporarily storing the contents, and then transmitting them collectively later is adopted.

FIG. 4 is a flowchart showing the flow of processing in the factory 200, and the steps of confirmation and error display performed in the spectacle store 100 by transfer from the factory 200. In the figure, the numbers following S represent step numbers.

[S11] Main frame 2 of factory 200
01 includes an eyeglass lens ordering system program, an eyeglass lens processing design program, and a bevel processing design program. When processing condition data such as lens information, prescription value, frame information , layout information, bevel information, etc. are sent via a public communication line, the eyeglass lens processing design program is started via the eyeglass lens ordering system program, and the lens processing design is started. An operation is performed. Sand
That is, the desired lens shape including the bevel shape is calculated.
You.

Here, first, based on the shape information of the frame, the prescription value, and the layout information, it is checked whether or not the outer diameter of the designated lens is insufficient. Determine the front curve. If the outer diameter of the lens is insufficient, the processing returns to the eyeglass lens ordering system program to calculate the shortage direction and the shortage amount in the boxing system and display the shortage direction and the shortage amount on the terminal computer 101 of the eyeglass shop 100 (described later). Step S146). Next, the thickness of the lens is determined, and the back curve of the lens, the prism, and the prism base direction are calculated, thereby determining the overall shape of the lens before the edging.

Here, the thickness of the edge around the entire circumference is checked for each moving radius in each direction of the frame, and it is checked whether there is a portion below the required edge thickness. If there is a point below, the shortage direction and shortage amount in the boxing system are calculated, and the
0 to return to the eyeglass lens ordering system program for display on the terminal computer 101 (step S
146).

If the thickness of the edge on the entire circumference is not insufficient, the lens weight, the maximum and minimum edge thicknesses, their directions, and the like are calculated. Then, an instruction value for the terminal computer 210 of the factory 200, which is necessary for processing the back surface of the lens, is calculated.

The above operation is performed by the terminal computer 210,
By rough rubbing machine 211 and sanding polishing machine 212,
This is necessary when the lens is polished before the edging, and various calculated values are passed to the next step.

When a stock lens is specified and the lens polishing process is not performed before the edging process, the lens outer diameter, the lens thickness, the front curve, and the back curve are previously determined based on the type and prescription value of the lens. Since these data are determined and their data are stored, these values are read out to confirm whether the outer shape and the edge thickness of the lens are sufficient, as in the case of the above-mentioned processed back product, and passed to the next step. .

[S12] Next, the main frame 201
Then, the beveling design program is activated via the eyeglass lens ordering system program, and the beveling design calculation is performed. As a result of the calculation, if the bevel does not stand unless the frame is deformed, an error code to that effect is output (see step S145 described later). Further, the calculated deformation amount is compared with a deformation limit amount provided for each material of the eyeglass frame, and if the deformation amount exceeds the limit amount, an error code to that effect is output.

Since the eyepoint position is shifted by deforming the three-dimensional bevel tip shape, the error is corrected. Also, correction of the restoration error is performed.
U. These processes can be selectively performed. [S13] If the designation in step S9 of FIG. 3 is "order", the flow proceeds to step S15, while if "inquiry", the result of the inquiry is transmitted to the eyeglass store 1 via the public communication line.
00 to the terminal computer 101 at step S14
Proceed to.

[S14] In this step, based on the result of the inquiry sent from the main frame 201 of the factory 200, the terminal computer 101 displays the expected shape of the lens at the time of completion of the beveling process on the screen display device, There is to provide for confirmation. The details of this step will be described below in detail with reference to FIG.

FIG. 5 is a diagram showing the details of step S14. The number following S represents the step number. [S141] Steps S11 and S1 in FIG.
It is determined whether or not an error has occurred in each of the machining design calculations in 2. If not, the incoming screen of the order entry shown in FIG. 8 is displayed on the screen of the image display device of the terminal computer 101 in FIG. Then, the layout confirmation diagram shown in FIG. 9 is displayed by further operating the soft keys. Thereafter, the contents to be displayed are selected by operating the soft keys, and the process proceeds to any one of steps S142 to S144.
If an error has occurred, the process proceeds to step S145 or S146 according to the content of the error.

FIG. 8 shows an example of a part of the incoming screen of the order entry displayed on the image display screen. That is, the order entry incoming screen is a screen in which the bar graph of the lens thickness and the lens weight of FIG. 8 is added to the order entry screen shown in FIG. From the bar graphs of the lens thickness and the lens weight in FIG. 8, the processing design results of the two types of lenses can be compared and confirmed.

FIG. 9 is a diagram showing an example of a layout confirmation diagram displayed on the image display screen. On this screen, how the lenses are arranged according to the layout information specified for the spectacle frame is displayed for two types of lenses (first combination and second combination), and these are visually confirmed. be able to. Further, numerical data of the maximum edge thickness position 92 and the minimum edge thickness position 93, the respective angular directions and the lens weights can be confirmed. In addition to these information, each lens surface has an astigmatism axis 94, a distance power measurement point 95, a near eye point 9,
6, and the distance eye point 97 are displayed. Thus, it is possible to easily confirm whether or not there is an error in the input of the layout information.

The soft key menu 9 is displayed at the bottom of the screen.
1 is displayed. The soft key menu 91 has a three-dimensional view display key 9 for displaying the three-dimensional view screen shown in FIG.
1a, a bevel confirmation diagram display key 91b for displaying the bevel confirmation diagram screen shown in FIG. 10, and a bevel balance display key 9 for displaying the bevel balance diagram screen shown in FIG.
1c, and a return key 91d for returning to the initial screen
There is.

[S142] When the three-dimensional view display key 91a is selected by operating the soft keys in FIG. 9, this step is executed, and the three-dimensional view is displayed. FIG. 1 shows an example of a three-dimensional view screen displayed on the screen display device. On this screen, the left and right lenses can be spatially arranged at the positions where they were framed in the frame, and this can be displayed as a three-dimensional view as viewed from any direction. The first combination is displayed.

The display direction and size of the three-dimensional view can be switched by the soft key menu 15 at the bottom of the screen. That is, the enlargement and reduction of the entire screen are performed by the enlargement key 15a and the reduction key 15b, and the direction keys 15c to 15c.
The viewing angle direction is switched by 5f. Each time the corresponding function key on the keyboard side is pressed once, each of the enlargement key 15a and the reduction key 15b enlarges or reduces the three-dimensional view in small increments. Direction keys 15c ~
15f changes by 30 ° in each direction each time the corresponding function key is pressed. The screen of FIG. 1 displays an image of the spectacle wearer viewing the lens from a direction of 30 ° to the right and 30 ° below the right side.

The front key 15g is used to restore the tilted image, the full-size key 15h is used to return the enlarged or reduced image, and the original key 15h is used to return to the initial screen. Can be made by selecting the return key 15i.

In addition to such a three-dimensional view, a front surface curve 11 and a rear surface curve 12 of the lens, and auxiliary lines 13 and 14 along these curves are displayed on the screen of FIG. As a result, it is possible to make a visual confirmation as if an actual lens were viewed. At the spectacles store 100, if the appearance of the lens surface curve 11 and the back surface curve 12 on this screen makes the projection of the lens surface worrisome, the spectacle lens surface curve 11 is changed to a shallow one. Or, the type of the spectacle lens is changed to a lens whose surface curve 11 is designed to have a shallow curve.

Further, on this screen, the astigmatic axis 16, the distance measuring point 17, the near eye point 1
8 and a distance eye point 19 are displayed.

[S143] When the bevel confirmation diagram display key 91b is selected by operating the soft key shown in FIG. 9, this step is executed, and the bevel confirmation diagram is displayed. FIG. 10 shows an example of a bevel confirmation diagram screen displayed on the screen display device. At the top of the screen, a side view (display 111) of the right lens of the first combination is displayed. The lower left part of the screen is a plan view (display 113) of the lens. The cursor 113a shown in the display 111 and the display 113 can be moved around the lens by the operation of the soft keys 114a to 114h in the soft key menu 114. The cursor 113a is viewed from the position shown in the display 113. Figure 1
It becomes 11.

The display 113 has a cursor 113a.
A line 113b connecting the frame edge 113e with the frame center 113e, a maximum edge thickness position 113c, and a minimum edge thickness position 113d are displayed. The line 113b may be a connection between the optical center and the cursor 113a instead of the frame center 113e. Alternatively, another cursor may be displayed on the screen, and the cursor may be connected to the cursor 113a.
In this way, the cross-sectional shape of an arbitrary location can be confirmed.

The movement keys 114a and 114b are keys for moving the cursor 113a to the maximum edge thickness position 113c and the minimum edge thickness position 113d, respectively, at a time. The move keys 114c to 114f are keys for moving the cursor 113a at one time to the 0 ° position on the vertical and horizontal axes of the plane. The movement key 114g is moved by the cursor 113a.
Is moved 10 degrees clockwise and the move key 114h is a key that moves 10 degrees counterclockwise.

As described above, when the position of the cursor 113a is determined by performing the soft key operation, the selection key 114i is selected and operated. As a result, a cross-sectional view (display 112) along the line 113b is displayed on the lower right side of the screen. Thereby, the shape of the lens and the positional relationship between the edge and the bevel can be seen in detail.

In FIG. 10, numerical data is also displayed in addition to these screens. That is, at the lower part of the display 113, the angular position of the cursor 113a is displayed as a sectional direction. Here, the angle display in the boxing system is used. On the other hand, in the lower part of the display 112, the edge thickness, the leading amount, and the ratio of the cut surface are displayed. Here, the advancing amount refers to the distance to the bevel table surface from the bottom lens front refractive surface, also, the ratio refers to the ratio of the distance between the lens front refractive surface and the bevel vertex for the edge thickness.

In this way, in the spectacles store 100, the degree of protrusion and the edge thickness of the lens surface are confirmed on the display screen, and the designation is changed as necessary. When the user wants to return to the initial screen, the user can select and operate the return key 114j.

[S144] When the bevel balance display key 91c is selected by operating the soft key shown in FIG. 9, a right and left bevel balance diagram is displayed. FIG. 11 shows an example of a left and right bevel balance diagram screen displayed on the screen display device. On this screen, the first combination in FIG. 9 is displayed. In this bevel balance diagram, both edge positions of the left and right lenses and the bevel position are continuously displayed from 0 ° to 360 °. However, here, the angle display in the boxing system is used for the right lens, and the angle display opposite to that of the boxing system is used for the left lens. That is, for any of the left and right lenses, the nose side of the horizontal axis passing through the center of the frame or the optical center is 0 °, the right lens is counterclockwise, and the left lens is clockwise.

In the figure, the maximum edge thickness positions 121 and 124 and the minimum edge thickness position 12 are located on the left and right lens surfaces, respectively.
2 and 125 are shown. Cursors 123 and 126 are used to move key 12 of soft key menu 129.
It can be moved by the operations of 9a to 129d. Move key 1
29a moves the cursors 123 and 126 to the maximum edge thickness positions 121 and 124 at a time, respectively, and the move key 129b moves the cursors 123 and 126 to the minimum edge thickness positions 122 and 125 at a time, respectively. The movement keys 129c and 129d correspond to the cursor 123
And 126 are each moved in the direction of the arrow in steps of 10 °.

At the lower part of each of the left and right bevel balance diagrams, outline shapes 127 and 128 of the edge surface at the positions where the cursors 123 and 126 are placed are displayed, respectively. Also,
Numerical data on these include cross-sectional direction, edge thickness,
The advance amount and the ratio are displayed. That is, taking the right lens as an example, the sectional direction of the contour shape 127 is 0 °,
It is shown that the edge thickness of this portion is 3.4 mm, the leading amount of the bevel bottom is 0.0 mm, and the ratio of the distance from the front refracting surface of the lens to the top of the bevel to the edge thickness is 40%.

By displaying in this way, the positional relationship between the edge of the left and right lenses and the bevel can be seen at once. Therefore, it is an effective display screen for those who have specialized knowledge of lens processing.

When it is desired to return to the initial screen from this screen, the return key 129e may be selected and operated. In the spectacle store 100, looking at the screens shown in FIGS. 10 and 11 described above, if the positional relationship between the edge and the bevel is poor, the bevel mode specified in step S3 in FIG. Can be changed, and the front curve of the lens can be specified.

[S145] If an error has occurred in the beveling design calculation in step S12 in FIG. 4, this step is executed. That is, a message “An error has occurred” is displayed on the screen display device of the terminal computer 101 in FIG. Here, when "error display" is selected by operating the soft key, the details of the error in the beveling are displayed.

The contents of errors in beveling include the following. The first is the occurrence of processing interference, which is an error in which a tool for fixing a lens in a small frame such as a crab-shaped frame hits a processing apparatus during beveling. In this error, the order cannot be accepted unless the frame is changed to a larger frame.

The second is an error that the bevel cannot be set all around unless the frame is bent, even though "frame bending is impossible" is specified in step S3. For this error, it is necessary to change to a lens having a front curve close to the shape of the frame.

Third, there is an error that the lens can be beveled, but the frame must be greatly bent.
In the case of this error, confirm that the specified bevel mode is incorrect or impossible, change the bevel mode specification, change the front curve of the lens, and change the shape of the frame. You need to get closer.

[S146] If an error that the lens outer diameter or the edge thickness is insufficient occurs in the lens processing design calculation in step S11 in FIG. 4, this step is executed. That is, a message "Could not be obtained" is displayed on the screen display device. Here, when "layout display" is selected by a soft key operation, an error display diagram is displayed.

FIG. 12 is a diagram showing an example of an error display diagram screen displayed on the screen display device. On this screen,
The first combination in FIG. 9 is shown, and the cursor 131 and 132 indicate the maximum shortage position of the lens outer diameter, respectively.
The actual lens contour lines 133 and 134 are visually displayed. In addition, an eye point 136 is provided on the lens surface.
And 137 are displayed. Further, the diameter of the missing lens and its direction are displayed as numerical data at the lower part of the screen. As a result, the details of the error can be confirmed. In the case of this error, it is necessary to change the type of the lens to one having a larger outer diameter or to change the frame to a smaller one.

When the user wants to return to the initial screen, he can select and operate the return key 135a of the soft key menu 135. Returning to FIG. 4, [S15] If the designation in step S9 in FIG. 3 is "order", this step is executed and it is determined whether or not an error has occurred in the machining design calculation in steps S11 and S12. I do. If an error has occurred, the result is sent to the terminal computer 101 of the eyeglass store 100 via the public communication line, and the process proceeds to step S18. On the other hand, if no error has occurred, the process proceeds to step S16.

[S16] The result of the processing design calculation is sent to the terminal computer 101 of the spectacles store 100 via the public communication line, and the processing is actually performed. [S17] An indication that "the order has been accepted" is displayed on the screen display device of the terminal computer 101 of the eyeglass store 100. Thereby, it can be confirmed that the lens before the edging process or the lens after the beveling process that can be reliably framed in the frame can be ordered.

[S18] Since the lens that has been ordered has an error in the lens processing design calculation or bevel processing design calculation and cannot be processed, an indication that "order cannot be accepted" is displayed.

[0074]

As described above, according to the present invention, the predicted three-dimensional image is displayed as an image by adding auxiliary lines along the front surface and the back surface of the lens. The shape, the edge thickness, the bevel position, and the like are displayed in detail, and the finished shape of the lens edge finishing can be easily predicted.

Further, since the expected cross-sectional shape of the portion designated by the operator is displayed as an image, it is possible to check the finished shape of the lens edge finishing in more detail.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a three-dimensional view screen displayed on a screen display device.

FIG. 2 is an overall configuration diagram of a spectacle lens supply system.

FIG. 3 is a flowchart showing a flow of an initial input process in an eyeglass shop.

FIG. 4 is a flowchart showing the flow of processing in a factory, and the steps of confirmation and error display performed in a spectacle store by transfer from the factory.

FIG. 5 is a diagram showing details of step S14 in FIG. 4;

FIG. 6 is a diagram showing an example of an order entry screen used when designating a lens type.

FIG. 7 is a diagram illustrating an example of a screen of a frame shape measurement result displayed on the screen display device.

FIG. 8 is a diagram showing an example of a part of an incoming screen of an order entry displayed on the image display screen.

FIG. 9 is a diagram illustrating an example of a layout confirmation diagram displayed on an image display screen.

FIG. 10 is a diagram illustrating an example of a screen of a bevel confirmation diagram displayed on the screen display device.

FIG. 11 is a diagram showing an example of a screen of a left and right bevel balance diagram displayed on the screen display device.

FIG. 12 is a diagram illustrating an example of a screen of an error display diagram displayed on the screen display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Lens surface curve 12 Lens back surface curve 13 Lens back surface auxiliary line 14 Lens back surface auxiliary line 100 Eyeglass store 101 Terminal computer 102 Frame shape measuring device 200 Factory 201 Main frame 202 LAN 210 Terminal computer 211 Roughing machine (curve generator) 212 Sanding Polishing machine 220 Terminal computer 221 Lens meter 222 Thickness meter 230 Terminal computer 231 Marker 232 Image processor 240 Terminal computer 241 Lens grinding device 242 Chuck interlock 250 Terminal computer 251 Shape measuring device 300 Public communication line

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-15623 (JP, A) JP-A-3-111160 (JP, A) JP-A-3-135708 (JP, A) JP-A-3-153 135709 (JP, A) JP-A-3-135710 (JP, A) JP-A-3-135711 (JP, A) JP-A-4-146067 (JP, A) JP-A-4-146068 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G06F 17/50 610 G06F 17/50 622 G06F 17/50 680 B24B 9/14 G02C 13/00 Patent file (PATOLIS) JICST file (JOIS)

Claims (7)

(57) [Claims] 1. An eyeglass lens processing expected image display method for predicting the eyeglass lens processing state based on data from an eyeglass lens ordering side and displaying an image, wherein the type of eyeglass lens, prescription value, frame Input the processing conditions such as shape information, layout information, bevel position, bevel type, etc., and calculate the edge finishing processing shape such as the shape of the lens front surface and lens back surface, the lens thickness, and the lens peripheral shape from the processing conditions. A predicted three-dimensional view of the spectacle lens is created based on the calculated trimmed finish shape, and the predicted three-dimensional view is image-displayed by adding auxiliary lines along the lens front surface and the lens rear surface. The method of displaying the expected finished image of the eyeglass lens. 2. The method according to claim 1, wherein the predicted three-dimensional view is enlarged and reduced according to a key operation by an operator. 3. The method according to claim 1, wherein the predicted three-dimensional view displays a view as viewed from a direction designated by an operator. 4. A spectacle lens processing finish expected image display method for predicting a processing finish state of the spectacle lens based on data from an ordering side of the spectacle lens and displaying an image, the type of the spectacle lens, a prescription value, and a frame. Input the processing conditions such as shape information, layout information, bevel position, bevel type, etc., and calculate the edge finishing processing shape such as the shape of the lens front surface and lens back surface, the lens thickness, and the lens peripheral shape from the processing conditions. A predicted three-dimensional view of the spectacle lens based on the calculated trimmed finished shape, and displays an image of a predicted cross-sectional shape of a portion specified by an operator; Display method. 5. The spectacle lens according to claim 4, wherein the expected cross-sectional shape is a cross-section on a line connecting a position on a lens peripheral portion designated by the operator and a frame center. Expected image display method. 6. The processing finish of the spectacle lens according to claim 4, wherein the expected cross-sectional shape is a cross-section on a line connecting a position on a lens peripheral portion designated by the operator and an optical center. Expected image display method. 7. The method according to claim 4, wherein data on the sectional shape is simultaneously displayed on the screen on which the expected sectional shape is displayed.