JPH0668215A - Working finish estimated picture display method for spectacle lens - Google Patents

Abstract

PURPOSE:To easily confirm the balance of the rigeline vertex positions of right- and-left lenses, in the working finishing estimated picture display method of a spectacle lens by which the working finish state of the spectacle lens can be estimated, and picture is displayed. CONSTITUTION:The nose side of a horizontal axis passing through a frame center or an optical center is defined as 0 deg., and a counter clockwise direction is defined as a positive direction for the right side lens, and a clockwise direction is defined as a negative direction for the left side lens. Then, front side refracting face positions 120a and 120f, rigeline vertex positions 120b and 120g, back side refracting face positions 120c and 120h, rigeline surface side bottom positions 120d and 120i, and rigeline rear face side bottom positions 120e and 120j are developed and displayed like a band until 360 deg. on a screen. Then, contour shapes 127 and 128 of the conversion face at the position of each cursor 123 and 126, and other information are displayed at the lower part of each rigeline balance diagram.

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 predicted finished image of a spectacle lens for displaying an image by predicting the finished state of the spectacle lens, and more particularly to spectacles for displaying an image based on data from the ordering side of the spectacle lens. The present invention relates to a method for displaying an expected image of lens processing finish.

[0002]

2. Description of the Related Art Conventionally, when an eyeglass lens processing machine automatically grinds a peripheral edge of a lens into a shape that can be fitted to an inner peripheral surface of a lens frame of an eyeglass frame, a edging finish of a lens to be processed is finished. A method for displaying an expected shape is disclosed in Japanese Patent Laid-Open No. HEI-3
No. 135711 and the like. In this technology, edging processing is performed by displaying the lens front side refracting surface position, the bevel apex position, and the lens back side refracting surface position at the peripheral edge of the finished lens as an image developed according to the shape of the frame. The edge thickness and bevel top position at the peripheral edge of the finished lens can be confirmed.

[0003]

However, in the above technique, since the shape of the lens peripheral portion is expanded and displayed along the shape of the frame, the positional relationship between the frame and the bevel can be easily understood, but There is a drawback that it is difficult to understand the relationship between the position of the front refractive surface of the lens, the position of the rear refractive surface of the lens, and the bevel apex position.

Further, in the above technique, since the shapes of the left and right lens peripheral portions are not displayed at the same time, the left and right balance of the bevel apex position cannot be confirmed. If the left and right balance of the top of the bevel is not good, the finished spectacles will not look good.

For example, a lens subjected to beveling by a frame follower is fitted to a frame which has a square shape or a rectangular shape when viewed from the front and has a difference in the curved shape of the left and right rims. In this case, the amount of protrusion of the lens edge toward the front side of the rim of the left and right frames is different, and spectacles that look bad are formed. In addition, even when using frames with the same left and right rim shape, when performing bevel processing other than convex mode (beveling along the front refracting surface of the lens) on lenses with different left and right dioptric power, The same problem occurs due to the difference in lens thickness.

As described above, if the shape of the peripheral edge of the lens such as the apex position of the bevel cannot be observed for the left and right lenses, it becomes difficult to manufacture eyeglasses that always look good. The present invention has been made in view of the above circumstances, and provides a method for displaying a predicted finished image of a spectacle lens, which enables easy confirmation of the lens peripheral edge shape such as the bevel apex position of the left and right lenses. With the goal.

[0007]

In order to solve the above-mentioned problems, the present invention predicts the processed finish of a spectacle lens by predicting the processed finish state of the spectacle lens based on the data from the ordering side of the spectacle lens. In the image display method, the processing conditions such as the type of the spectacle lens, prescription value, frame shape information, layout information, bevel position, bevel type, etc. are input, and from the processing conditions, the peripheral edge shape of the edging processing finish is calculated. Then, a band-shaped development view in which the shape of the lens peripheral portion is developed into a band-like shape is created, and the band-shaped development views of the left and right eyeglass lenses are displayed side by side on the screen, and an expected finished image display of the eyeglass lens is displayed. A method is provided.

[0008]

[Function] The processing conditions such as the type of the spectacle lens, the prescription value, the frame shape information, the layout information, the bevel position, the bevel type, etc. are inputted, and the peripheral edge shape of the lens finished by the edging process is calculated from the processing conditions to obtain the lens. A band-shaped developed view in which the shape of the peripheral portion is developed into a band is created, and the band-shaped developed views of the left and right eyeglass lenses are displayed side by side on the screen.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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. A public communication line 300 connects the spectacle store 100 on the ordering side and the lens maker's factory 200 on the lens processing side. Although only one eyeglass store is shown in the figure,
Actually, a plurality of eyeglass stores are connected to the factory 200.

In the spectacle store 100, an online terminal computer 101 and a frame shape measuring instrument 102 are installed. The terminal computer 101 includes a keyboard input device and a CRT screen display device, and is connected to the public communication line 300. To the terminal computer 101, spectacle lens information, prescription values, and the like are input from the keyboard input device, and actually measured and calculated spectacle frame frame information is input from the frame shape measuring device 102, and these data are transmitted through the public communication line. Factory 2 through 300
00 mainframe 201 is transferred online.

The main frame 201 is provided with a spectacle lens processing design program, a bevel processing design program, etc., calculates a lens shape including a bevel shape based on the input data, and outputs the calculation result via the public communication line 300. And returns the result to the terminal computer 101 and displays it on the screen display device, and the calculation result is displayed on each terminal computer 210, 220, 230, 240, 250 of the factory 200.
To be sent via the LAN 202.

A rough rubbing machine (curve generator) 211 and a sand polishing machine 212 are connected to the terminal computer 210, and the terminal computer 210 follows the calculation result sent from the main frame 201.
By controlling the sand polishing machine 212 and the sanding polishing machine 212, the curved surface of the back surface of the lens whose surface has been previously processed is finished.

A lens meter 221 and a wall thickness meter 222 are connected to the terminal computer 220, and the terminal computer 220 sends the measured values obtained by the lens meter 221 and the wall thickness meter 222 and the main frame 201. By comparing the calculated results with the acceptance results of the lens having the curved surface on the back surface of the lens, a mark (three-point mark) indicating the optical center is given to the acceptable 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) when edging and beveling the lens according to the calculation result sent from the main frame 201. And is used to apply blocking position marks.
The jig for blocking is fixed to the lens according to the blocking position mark.

An NC-controlled lens grinding device 241 consisting of a machining center and a chuck interlock 242 are connected to the terminal computer 240, and the terminal computer 240 carries out edging processing of the lens according to the calculation result sent from the main frame 201. And beveling.

A bevel apex shape measuring device 251 is connected to the terminal computer 250, and the terminal computer 25
0 compares the peripheral length and the shape of the bevel-processed lens measured by the shape measuring device 251 with the calculation result sent from the main frame 201 to determine whether or not the processing is successful.

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

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

FIG. 6 is a diagram showing an example of an order entry screen used for designating the lens type. That is, the type of lens is designated in the column 61. Two types of lenses can be specified in case of inquiry. “Form” in column 65
Then, specify whether the lens to be ordered or inquired is a beveled lens or a lens that is not subjected to edging and beveling. Also, in "METS processing" in the column 65, a processing specification for designating the lens thickness to be the minimum required value, a processing specification for designating a chamfer that makes the edge of the minus lens inconspicuous and a polishing finish of the portion are specified. To 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 the data registered on the screen and a registration key 66 for registering the data input on the screen
b, order key 66 to switch 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 the function keys on the keyboard of the terminal computer 101.

[S2] In the column 61 of FIG. 6, the color of the lens is designated. [S3] A lens prescription value is input in the left column of the column 62 of FIG. 6, and similarly, a lens processing specified value is input in the right column of the column 62, eyeglass frame information is input in the column 63, and layout information is input in the column 64. , Enter the bevel mode, bevel position and bevel shape. The layout information specifies an eye point position that is a pupil position on the frame. In the case of “inquiry”, the information of the eyeglass frame can be designated up to two types if the designation of the lens type in step S1 is one type.

As lens processing designation values, lens thickness,
You can enter the specified values for edge thickness, prism, eccentricity, outer diameter, and lens surface curve (base curve). The bevel mode has modes of "1: 1", "1: 2", "convex tracing", "frame tracing", and "auto-beveling" depending on where the lens edge is placed.
Select from them and enter. Here, the "convex profile" 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”, and “auto-bevel”, and the position of the bottom of the bevel surface is located in the rear direction from the lens surface. This is specified by 0.5 mm.

The bevel shape is selected from "standard bevel", "bevel for combination (bevel for combination frame)", "grooving", and "planar". "Combined bevel" is designated when a frame member is provided with a decorative member and the lens hits the decorative member. "Grooving",
The “flattening” is not so-called beveling, but is specified here.

[S4] For the frame designated in the column 63, it is determined whether or not the frame shape measurement by the frame shape measuring machine 102 in FIG. 2 has been completed. 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 measurement number attached to the spectacle frame whose shape is to be measured is input. 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 of step S12 as a parameter for correcting the peripheral length of the bevel apex according to the material so that the lens fits exactly into the frame when the lens is fitted into the frame. If there is a designation that the frame cannot be bent, and if the lens cannot be put in the frame without bending the frame, in order not to receive an order, the spectacle store 100
The error display is displayed on the screen display device of the terminal computer 101.

[S6] The spectacle frame to be measured is fixed to the frame shape measuring device 102 and the measurement is started. The frame shape measuring device 102 measures the polar coordinate values of the shape of the bevel groove three-dimensionally by bringing the probe into contact with the bevel grooves of the left and right frames of the spectacle frame and rotating the probe around a predetermined point. To get Then, depending on the case, smoothing of these data is performed, and then the frame curve CV, the peripheral length L of the bevel groove, the frame PD (distance between pupils).
FPD, frame nose width DBL, A and B sizes that are the maximum widths on the left, right, top and bottom of the frame, effective diameter E
D, an inclination angle TILT that is an angle formed by the left and right frame frames is calculated. Then, the frame shape measuring instrument 102 sends these calculated data to the terminal computer 101,
Display on the screen display. If the data is greatly disturbed or there is a large difference between the left and right frame shapes, 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 view (display 72, display 73) of the bevel groove shape of the frame made of a metal material (display 71) as viewed from the top and the front is shown, and the calculated values of the left (L) and right (R) (display 74) are shown.
Is displayed.

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

In the spectacle store 100, when an error message indicating that the data is greatly disturbed is displayed on the screen display device, there is no adhered matter in the frame groove, or the seam of the frame frame is displaced, or Check if the measurement is taken with the gap left open and repeat the measurement. Also,
If an error message indicating that there is a large difference in the shapes of the left and right frame frames is displayed on the screen display device, if the difference is acceptable, enter a confirmation that it is okay and leave the difference. If not, you may correct the frame shape by hand and then measure again, or you can calculate the average of the left and right shapes and input the merging specification with this as the frame shape value. Good.

[S7] When the frame shape has already been measured, the measurement number attached to the spectacle frame is input in order to read the measurement value stored in advance. [S8] The stored frame shape information about the corresponding spectacle frame is read from the internal storage medium according to the measurement number.

[S9] Column 6 of the order entry screen of FIG.
In "0", "inquiry" or "order" is designated. Data such as lens information, prescription values, and frame information obtained by executing the above steps is sent to the mainframe 201 of the factory 200 via the public communication line. During transmission, the terminal computer 1 of the spectacle store 100
In 01, a message indicating that transmission is in progress is displayed. When ordering lenses, group transmission can be used, which can collectively transmit a maximum of, for example, 15 cases at a time to shorten the communication time. In group transmission, the order contents of each case are confirmed, temporarily stored, and then collectively transmitted.

FIG. 4 is a flow chart 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 number following S represents a step number.

[S11] Main frame 2 of factory 200
01 includes a spectacle lens ordering system program, a spectacle lens processing design program, and a bevel processing design program. When the processing condition data such as lens information, prescription value, frame information, etc. is sent via the public communication line, the spectacle lens processing design program is started via the spectacle lens ordering system program, and the lens processing design calculation is performed.

Here, first, based on the shape information of the frame, the prescription value, and the layout information, it is confirmed 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 shortage direction and amount in the boxing system are calculated, and the process is returned to the eyeglass lens ordering system program for display on the terminal computer 101 of the eyeglass store 100 (described later). See 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 edging.

Here, the edge thickness of the entire circumference is checked for each radius vector in each direction of the frame, and it is confirmed whether or not there is a portion where the edge thickness is less than the required edge thickness. If there is a point below, calculate the shortage direction and the shortage amount in the boxing system, and
Processing is returned to the spectacle lens ordering system program for displaying on the terminal computer 101 of 0 (step S
146).

If the peripheral edge thickness is sufficient, the lens weight, the maximum and minimum edge thicknesses, their directions, etc. 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 calculation is performed by the terminal computer 210,
By the rough rubbing machine 211 and the sanding polishing machine 212,
This is necessary when the lens polishing process before the edging process is performed, and various calculated values are passed to the next step.

When the stock lens is designated and the lens polishing process before the edging process is not performed, the lens outer diameter, the lens thickness, the front curve, and the back curve are preliminarily determined by the lens type and the prescription value. Since it has been decided, and those data are stored, read those values and check whether the outer shape and edge thickness of the lens are sufficient, as in the case of the back processed product, and pass it to the next step. .

[S12] Next, the main frame 201
Then, the bevel processing design program is started via the eyeglass lens ordering system program, and the bevel processing design calculation is performed. If the result of the calculation is that the bevel does not occur 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 the deformation limit amount provided for each material of the spectacle frame, and if it exceeds the limit amount, an error code to that effect is output.

Since the eyepoint position is displaced by deforming the three-dimensional bevel tip shape, the error is corrected. [S13] If the designation in step S9 of FIG. 3 is "order", the process proceeds to step S15, while if "inquiry", the result of the inquiry is sent through the public communication line to the eyeglass store 1
00 to the terminal computer 101, and step S14
Go to.

[S14] In this step, based on the result of the inquiry sent from the mainframe 201 of the factory 200, the terminal computer 101 displays the expected shape of the lens at the time of the completion of the beveling on the screen display device to change or change it. It is provided for confirmation. The details of this step will be described below with reference to FIG.

FIG. 5 is a diagram showing the detailed contents of step S14. The number following S represents a step number. [S141] Steps S11 and S1 of FIG.
It is determined whether or not an error has occurred in each machining design calculation in 2. If it has not occurred, 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 of FIG. Then, the layout confirmation diagram shown in FIG. 9 is displayed by further operating the soft keys. After that, the contents to be displayed are selected by the soft key operation, and the process proceeds to any of steps S142 to S144.
If an error has occurred, the process proceeds to step S145 or step S146 depending on 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 obtained by adding the bar graphs of the lens thickness and the lens weight of FIG. 8 to the order entry screen shown in FIG. The bar graphs of the lens thickness and the lens weight in FIG. 8 make it possible to compare and confirm the processing design results of the two types of lenses.

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 in the spectacle frame is displayed for two types of lenses (first combination and second combination), and they are visually confirmed. be able to. Further, it is possible to confirm the maximum edge thickness position 92 and the minimum edge thickness position 93, and the numerical data of each angular direction and lens weight. In addition to these pieces of information, the astigmatic axis 94, the distance portion dioptric power measurement point 95, and the near eye point 9 are provided on each lens surface.
6 and the distance eyepoint 97 are displayed. As a result, it can be easily confirmed whether or not there is an error in the input of layout information.

At the bottom of the screen, soft key menu 9
1 is displayed. The soft key menu 91 includes a stereoscopic view display key 91a for displaying the stereoscopic view screen shown in FIG. 10, a bevel confirmation view display key 91b for displaying the bevel confirmation view screen shown in FIG. 11, and a bevel shown in FIG. Bevel balance display key 9 for displaying the balance diagram screen
1c and a return key 91d for returning to the initial screen
There is.

[S142] When the stereoscopic view display key 91a is selected by operating the soft key shown in FIG. 9, this step is executed and the stereoscopic view is displayed. FIG. 10 shows an example of a stereoscopic view screen displayed on the screen display device. On this screen, the left and right lenses can be spatially arranged at the positions when they are framed in a frame, and this can be displayed as a stereoscopic view seen from an arbitrary direction. First
The combination of is displayed.

The display direction and size of the stereoscopic view can be switched by the soft key menu 15 at the bottom of the screen. That is, the enlargement key 15a and the reduction key 15b are used to enlarge and reduce the entire screen by using the direction keys 15c to 1c.
The viewing angle direction is switched by 5f. Each of the enlargement key 15a and the reduction key 15b enlarges or reduces the three-dimensional figure in small increments each time the corresponding function key on the keyboard side is pressed once. Direction key 15c ~
15f changes by 30 ° in each direction each time the corresponding function key is pressed. On the screen of FIG.
An image in which the lens is viewed from the direction of 30 ° to the right side of the eyeglass wearer and 30 ° to the lower side is displayed. The front key 15g is used to return the tilted image to the original, the original size key 15h is used to return to the enlarged or reduced image, and the return key is used to return to the initial screen. It becomes possible by selecting 15i.

In addition to such a three-dimensional view, on the screen of FIG. 10, the front surface curve 11 and the rear surface curve 12 of the lens and the reference lines 13 and 14 along them are displayed. As a result, it is possible to make a visual confirmation such as looking at an actual lens. In the spectacle store 100, from the appearance of the front surface curve 11 and the rear surface curve 12 of the lens on this screen, if the protrusion on the surface of the lens is annoying, the surface curve 11 of the spectacle lens is designated and changed to a shallow one. Alternatively, the type of the spectacle lens is changed to one in which the surface curve 11 of the lens has a shallow curve design.

Further, on this screen, astigmatic axis 16, distance portion dioptric power measuring point 17, near vision eye point 1 are formed on each lens surface.
8 and the distance eyepoint 19 are displayed.

[S143] When the bevel confirmation diagram display key 91b is selected by the soft key operation of FIG. 9, this step is executed and the bevel confirmation diagram is displayed. FIG. 11 shows an example of a bevel confirmation diagram screen displayed on the screen display device. A side view (display 111) of the right lens of the first combination is displayed at the top of the screen. 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 move the lens periphery by the soft key operation of the moving keys 114a to 114h of the soft key menu 114, and is seen from the position shown in the display 113. The figure is displayed 1
It will be 11.

The display 113 has a cursor 113a.
The line 113b connecting the frame center 113e with the maximum edge thickness position 113c and the minimum edge thickness position 113d are displayed. Note that 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 at any place can be confirmed.

The move 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 at once, respectively. The movement keys 114c to 114f are keys for moving the cursor 113a at a time to the 0 ° position on the vertical axis of the plane and the horizontal axis. The move key 114g is used for the cursor 113a.
Is a key to move clockwise by 10 °, and the move key 114h is a key to move counterclockwise by 10 °.

In this way, when the soft key operation is performed and the position of the cursor 113a is determined, the decision key 114i is selected and operated. As a result, a cross-sectional view (display 112) along the line 113b is displayed in the lower right part of the screen. Thereby, the shape of the lens and the positional relationship between the edge and the bevel can be seen in detail.

Further, in FIG. 11, numerical data is also displayed in addition to these screens. That is, at the bottom of the display 113, the angular position of the cursor 113a is displayed as the cross-sectional direction. However, the angle display in the boxing system is used here. On the other hand, in the lower part of the display 112, the edge thickness of the cut surface, the amount of forward extension, and the ratio are displayed. Here, the amount of protrusion is the distance from the front refractive surface of the lens to the bottom of the bevel surface, and the ratio is the ratio of the distance between the front refractive surface of the lens and the apex of the bevel to the edge thickness.

In this way, in the spectacle store 100, the degree of protrusion of the lens surface and the edge thickness are confirmed on this display screen, and the designation is changed if necessary. In addition, in order to return to the initial screen, the return key 114j may be selected.

[S144] When the bevel balance display key 91c is selected by operating the soft key shown in FIG. 9, a left and right bevel balance diagram is displayed. FIG. 1 shows an example of a screen of a left and right bevel balance diagram displayed on the screen display device. On this screen, the first combination of FIG. 9 is displayed. In this bevel balance diagram, the front refracting surface positions 120a and 120f and the bevel apex positions 120b and 1 of the left and right lenses are shown.
20 g, rear refracting surface positions 120 c and 120 h, bevel front surface side bottom positions 120 d and 120 i, and bevel back surface side bottom positions 120 e and 120 j are continuously displayed in a band form 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 the boxing system is used for the left lens. That is, for both the left and right lenses, the nose side of the horizontal axis passing through the frame center or the optical center is 0 °, the right lens is counterclockwise, and the left lens is clockwise in the + direction.

Further, in the drawing, since the bevel balance diagram of the lens subjected to the convex contouring is shown, the front refracting surface positions 120a and 120f and the front bevel bottom positions 120d and 120i are overlapped with each other on both the left and right lenses. It is displayed.

The left and right lens surfaces have maximum edge thickness positions 121 and 124 and minimum edge thickness positions 122 and 125.
And are shown. The cursors 123 and 126 can be moved by operating the move keys 129a to 129d of the soft key menu 129. The move key 129a moves the cursors 123 and 126 to the maximum edge thickness positions 121 and 124 at once, and the move key 129b moves the cursors 123 and 126 to the minimum edge thickness positions 122 and 125 at once. Move key 129c, 12
9d moves the cursors 123 and 126 in the direction of the arrow in steps of 10 °.

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

By displaying in this way, the positional relationship between the edge of the left and right lenses and the bevel can be seen all at once. This is effective in the following points. That is, when a mode other than convex is specified in step S3 of FIG. 3, and when the prescription values and layouts of the left and right lenses are different or the rim curves of the left and right frames are different, pay attention to the balance of the left and right bevel positions. Often has to be. When the convex contour mode is designated, the bevel is processed along the surface side of the lens, so that the position can be easily predicted and the bevel position of the finished spectacles will not be dissatisfied.

However, in modes other than the convex profile, it is difficult to predict the bevel positions of the left and right lenses of the finished spectacles because the edge thickness of the lens and the curve of the frame are factors for determining the bevel position. For this reason, it is convenient to know the balance of the left and right bevel positions in modes other than the convex profile. In particular, the determination of the correct bevel position for each lens differs somewhat depending on the processing engineer. Therefore, as shown in FIG. 1, by making the positional relationship between the edge and the bevel of the left and right lenses uniform, the state when the lens is fitted to the frame can be easily predicted. Therefore, it is possible to provide good-looking spectacles.

When it is desired to return from this screen to the initial screen, the return key 129e may be selected. In the spectacle store 100, when looking at the screens shown in FIG. 1 and FIG. 11 above, and if the positional relationship between the edge and the bevel is unbalanced, the bevel mode designated in step S3 of FIG. You can change the type and specify the front curve of the lens.

[S145] If an error occurs in the bevel machining design calculation in step S12 of FIG. 4, this step is executed. That is, the message "An error has occurred" is displayed on the screen display device of the terminal computer 101 in FIG. Here, if the "error display" is selected by the soft key operation, the content of the beveling error is displayed.

The contents of the beveling error include the following. The first is the occurrence of processing interference, which is an error in which a jig or tool for fixing a lens in a small frame such as a crab-shaped frame hits a processing device during beveling. In the case of this error, the order cannot be accepted without changing to a larger frame.

The second is an error that the bevel cannot be set on the entire circumference unless the frame is bent, even though "frame bending is impossible" is designated 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 bent greatly.
In the case of this error, check whether the specified bevel mode is incorrect or unreasonable, change the bevel mode specification, change the lens front curve and change the frame shape. It is necessary to bring them closer.

[S146] In the lens processing design calculation in step S11 of FIG. 4, if there is an error that the outer diameter of the lens or the edge thickness is insufficient, this step is executed. That is, the message "Could not be cut out" is displayed on the screen display device. If the "layout display" is selected by operating the soft key, an error display diagram is displayed.

FIG. 12 is a view showing an example of an error display screen displayed on the screen display device. In this screen,
The first combination shown in FIG. 9 is shown, and the maximum lack position of the lens outer diameter is indicated by the cursors 131 and 132, respectively.
Further, the actual lens contour lines 133 and 134 are visually displayed. Also, the eyepoint 136
And 137 are displayed. Further, at the bottom of the screen, the shortage diameter of the lens and its direction are displayed as numerical data. Thereby, the error content can be confirmed. In the case of this error, it is necessary to change the type of lens to one with a larger outer diameter or to change the frame to a smaller one.

When it is desired to return to the initial screen, the return key 135a of the soft key menu 135 may be selected. Returning to FIG. 4, [S15] If the designation in step S9 of 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. To do. If an error has occurred, the result is sent to the terminal computer 101 of the spectacle 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 machining design calculation is sent to the terminal computer 101 of the spectacle store 100 through the public communication line, while the machining is actually performed. [S17] Terminal terminal computer 101 of spectacle store 100
The message "Order received" is displayed on the screen display device. As a result, it can be confirmed that the lens before edging or after beveling that can be reliably framed in the frame can be ordered.

[S18] Since the ordered lens is a lens that cannot be processed due to an error in the lens processing design calculation or the bevel processing design calculation, a message "Order not accepted" is displayed.

[0073]

As described above, in the present invention, a belt-shaped developed view in which the lens peripheral edge shape is developed into a belt-like shape is created, and the belt-shaped developed views of the left and right eyeglass lenses are displayed side by side on the screen. With respect to the left and right lenses, it is possible to easily confirm the shape of the lens peripheral portion such as the bevel apex position. Therefore, the state when the lens is fitted to the frame can be easily predicted. Therefore, it is possible to provide eyeglasses that look good.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a screen of a left and right bevel balance diagram 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 first input processing in an eyeglass store.

FIG. 4 is a flow chart showing a flow of processing in a factory and steps of confirmation and error display performed at an eyeglass store by transfer from the factory.

5 is a diagram showing the detailed content of step S14 of FIG.

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

FIG. 7 is a diagram showing an example of a frame shape measurement result screen displayed on a 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 showing an example of a layout confirmation diagram displayed on an image display screen.

FIG. 10 is a diagram showing an example of a stereoscopic screen displayed on the screen display device.

FIG. 11 is a diagram showing an example of a bevel confirmation diagram screen displayed on the screen display device.

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

[Explanation of symbols]

 101 terminal computer 102 frame shape measuring instrument 120a, 120f front refracting surface position 120c, 120h rear refracting surface position 120b, 120g bevel apex position 120d, 120i bevel surface bottom position 120e, 120j bevel back surface bottom position 121, 124 maximum edge Thickness position 122,125 Minimum edge thickness position 123,126 Cursor 127,128 Contour shape 200 Factory 201 Mainframe 202 LAN 210 Terminal computer 211 Rough scraper (curve generator) 212 Sanding grinder 220 Terminal computer 221 Lens meter 222 Thickness Total 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

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[Procedure amendment]

[Submission date] October 8, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

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

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

FIG. 6 is a diagram showing an example of an order entry screen used for designating the lens type. That is, the type of lens is designated in the column 61. That is, the manufacturer
The product classification symbol on the side is entered.
Refractive index, coating, lens color, lens surface light
The academic design and outer diameter can be specified. Two types of lenses can be specified in case of inquiry. In the “Form” column 65, the lens for ordering or inquiring is
Designate whether the lens is a beveled lens (HELP) or a lens that is not subjected to edging and beveling. Also, in "METS processing" in the column 65, a processing specification for designating the lens thickness to be the minimum required value, a processing specification for designating a chamfer that makes the edge of the minus lens inconspicuous and a polishing finish of the portion are specified. To do.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

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

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

[ Processing 1 ] to [ Processing ] on the order entry screen
"4" is the part for inputting general processing specifications.
Ri, as a processing designation value of the lens, lens thickness, edge thickness, prism, decentration, each designated value such as outer diameter, and a lens table curve (base curve) can be entered. The bevel mode depends on where the bevel is placed on the lens edge.
There are modes of "1: 1", "1: 2", "convex tracing", "frame tracing", and "auto bevel", and one of them is selected and input. Here, the "convex profile" is a mode in which a bevel is formed along the lens surface (front surface).

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

The bevel shape is selected from "standard bevel", "bevel for combination (bevel for combination frame)", "grooving", and "planar". "Combined bevel" is designated when a frame member is provided with a decorative member and the lens hits the decorative member. "Grooving",
"Flat" is also specified here.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

[S7] When the frame shape has already been measured, the measurement number attached to the spectacle frame is input in order to read the measurement value stored in advance. [S8] The stored frame shape information about the corresponding spectacle frame is read from the internal storage medium according to the measurement number. Through the above steps S1 to S8, the spectacle lens information, the eye
Of mirror frame information, prescription value, layout information, processing instruction information
Processing condition data, which is at least one of the above.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

[S11] Main frame 2 of factory 200
01 includes a spectacle lens ordering system program, a spectacle 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. is sent via the public communication line, the eyeglass lens processing design program is started via the eyeglass lens ordering system program, and the lens processing design is performed. Calculation is performed. Sanawa
Then, the desired lens shape including the bevel shape is calculated.
It

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction content]

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

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0071

[Correction method] Change

[Correction content]

[S16] The result of the machining design calculation is sent to the terminal computer 101 of the spectacle store 100 through the public communication line, while the machining is actually performed. [S17] The message "Order received" is displayed on the screen display device of the terminal computer 101 of the spectacle store 100. As a result, it can be confirmed that the lens before edging or after beveling that can be reliably framed in the frame can be ordered.

Claims (7)

[Claims] 1. A method of displaying an expected finished image of a spectacle lens, which displays an image by predicting a finished state of the spectacle lens based on data from an ordering side of the spectacle lens, wherein the type, prescription value, and frame of the spectacle lens. Input the processing conditions such as shape information, layout information, bevel position, bevel type, etc., calculate the lens peripheral edge shape of the edging finish from the processing conditions, and develop the belt peripheral shape of the lens peripheral edge shape And displaying the developed strips of the left and right eyeglass lenses side by side on the screen. 2. The processed finished expected image of an eyeglass lens according to claim 1, wherein the shape of the peripheral portion of the lens indicates a lens front side refracting surface position, a lens rear side refracting surface position, and a bevel apex position. Display method. 3. The processing of the spectacle lens according to claim 1, wherein the shape of the lens peripheral portion indicates a lens front refracting surface position, a lens rear refracting surface position, a bevel apex position, and a bevel bottom. How to display expected finish image. 4. The method for displaying a predicted finished image of a spectacle lens according to claim 1, wherein the edge surface contour shape at a position designated on the band-shaped developed view is displayed. 5. The method for displaying a predicted finished image of a spectacle lens according to claim 1, wherein the zonal developed view is developed in angular units centered on a reference position set on the spectacle lens. 6. The method according to claim 5, wherein the reference position is the center of the frame. 7. The method for displaying a predicted finished image of a spectacle lens according to claim 5, wherein the reference position is an optical center.