JP3294825B2 - Eyeglass lens supply system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle lens supply system including a computer installed on the ordering side of spectacle lenses, and a manufacturing computer connected to the ordering side computer so that information can be exchanged.

[0002]

2. Description of the Related Art Conventionally, in a spectacle store or the like, an operation of providing spectacles with lenses framed to a frame to a spectacle orderer first requires the spectacle store to prescribe the spectacle orderer and prepare a spectacle frame to be used. The spectacle lens is determined based on the shape and size, and the lens is ordered from a lens manufacturer.
Then, the spectacle store operates the various processing devices for the lens received from the manufacturer, performs edging and beveling based on the prescription, the lens information, and the spectacle frame information, and converts the processed lens into the spectacle frame. It is framed.
Hereinafter, grinding the lens in accordance with the shape of the frame of the spectacle frame is defined as “margin processing”, and processing for providing a bevel on the rimmed lens is defined as “bevel processing”.

[0003] This series of operations requires optical knowledge of spectacle lenses, physiological knowledge of the eye, and comprehensive processing techniques related to framing and fitting for adjusting spectacles based thereon.

[0004] Regarding the determination of the spectacle lens, for example, Japanese Patent Application Laid-Open No. Hei 2-24621 is known. According to this, an apparatus for selecting a spectacle lens diameter from spectacle frame shape data and a prescription value of a spectacle orderer is disclosed.
JP-A-59-93420 discloses means for determining an optimum lens thickness from prescription, lens information, eyeglass frame information, and lens design information.

As for the edging and beveling, the edging and beveling performed in the eyeglass store are centralized and performed in the processing center, and the eyeglass store and the processing center are connected by a public communication line. A connected spectacle lens processing system is disclosed in, for example, JP-A-4-13539.

According to this, a frame shape measuring machine is installed in each eyeglass store to create eyeglass frame shape data, and the data is transferred to a processing center via a public communication line.
At the processing center, the lens specified in advance is subjected to (3) Japanese Patent Application Laid-Open No. 6-34923, and edge trimming and beveling are performed according to the eyeglass frame shape data.

[0007]

However, in the conventional determination of the spectacle lens, the spectacle lens has not been determined by the apparatus in consideration of the beveling process, even if it is performed by an expert.

That is, conventionally, the prediction calculation up to the lens shape at the time of completion of the beveling has not been performed. Therefore, as a result of the beveling, the lens shape (the lens outer shape, the shape of the lens surface and the lens back surface, the lens thickness) is obtained. And the like, there is a problem that the bevel cannot be provided at an optimum position due to the inappropriateness.

For example, depending on the selection of the bevel position, the bevel curve of the spectacle lens may be shallower than the curve of the spectacle frame frame. In this case, the spectacle frame is deformed to match the bevel curve. Due to this deformation, the size of the eyeglass frame becomes larger than the calculation at the time of selecting the bevel position, and a situation occurs in which the outer diameter of the lens becomes insufficient or the edge thickness becomes insufficient.

If the spectacle frame cannot be deformed, the bevel of the spectacle lens must be adjusted to the three-dimensional shape of the spectacle frame. However, depending on the thickness of the spectacle lens and the shape of the spectacle frame, the bevel curve extends from the edge of the spectacle lens. There is also a situation in which the protruding part does not stand.

Further, although the spectacle lens can be framed in the spectacle frame, since the bevel position or the lens shape is not appropriate, the spectacle after completion of the framing has a poor appearance, and the eyeglass orderer may be dissatisfied. is there. That is, for example, there is a dissatisfaction that the edge thickness of the finished spectacle lens is too thick, and the protrusion of the lens surface from the spectacle frame is too conspicuous.

In order to cope with such dissatisfaction, the expected finished shape can be confirmed in advance, and as a result of the confirmation, for example, a lens of a material having a high refractive index or a lens having a shallow surface curve is used. There is a need for a system that can change the lens. In order to realize such a system, it is necessary to accurately grasp three-dimensional frame shape information including information on an inclination angle which is an angle formed by the left and right frame frames.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and inputs three-dimensional frame shape information obtained by a three-dimensional shape measuring device to an ordering computer, thereby processing ordering and ordering of eyeglass lenses. It is an object of the present invention to provide a system for supplying spectacle lenses, which makes it possible to carry out extremely efficiently.

A first means for solving the above-mentioned problems is as follows.
It includes an installation computer in order side of a spectacle lens, and the information exchange to the order-side computer connected to manufacturing-side computer, the ordering side computer the
Having the function of performing the processing required for ordering spectacle lenses,
The manufacturing computer performs the processing necessary for
The eyeglass lens information, three-dimensional frame shape information and frame material information including eyeglass frame information, prescription values and layout information including layout information in the ordering computer. While inputting information necessary for processing,
In the manufacturing computer, the input framing process
Including the bevel shape based on the information necessary for
The desired lens shape is calculated, and based on the calculation processing result,
Processing including whether or not lens processing is possible
By outputting the result to the ordering computer,
In the computer on the ordering side, at least the lens
Before and after placing an order, and based on the processing results.
So that the initial input contents of the above information can be changed.
In the eyeglass lens supply system, a three-dimensional frame shape measuring device is connected to the ordering side computer, and an output connection of the three-dimensional frame shape measuring device is provided.
The result is the computer information of the ordering side as the three-dimensional frame shape information.
A display device is connected to the ordering computer, and a screen of the display device displays an output result of the three-dimensional frame shape measuring device.
Te, at least frame curve, the circumference of the bevel groove, frame PD (pupillary distance), by which the tilt angle is an angle of the left and right framework appear, the output result sure
An eyeglass lens supply system characterized in that it can be recognized .

The second means displays an error message on the screen when the result of measurement by the three-dimensional frame shape measuring device has a large difference between the right and left frame shapes. It is an eyeglass lens supply system according to the means.

According to the above-mentioned first means, the three-dimensional frame shape information obtained by the three-dimensional shape measuring device is input to the ordering side computer, so that the ordering and order processing of the spectacle lens is extremely efficient. It is possible to do it. The three-dimensional shape obtained by the three-dimensional shape measuring device
At least the frame curve and the burnt
Circumference of frame, frame PD (distance between pupils), left and right frame
The tilt angle, which is the angle formed by the
The output result is displayed on the display device.
Can also be.

According to the second means, the risk of performing useless processing can be significantly reduced by displaying an error message.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 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 spectacle store is shown in the figure, a plurality of spectacle stores are actually connected to the factory 200.

The 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. Eyeglass lens information, prescription values, and the like are input from a built-in keyboard input device to the terminal computer 101, and the frame shape measuring device 10
2, the measured and calculated eyeglass frame information is input, and the data is transferred online to the mainframe 201 of the factory 200 via the public communication line 300.

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. To return to the terminal computer 101 and display it on the built-in screen display device, and the calculation result is transmitted to each of the terminal computers 210, 220, 230, 240,
250 via the LAN 202.

A rough rubbing 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.

A lens meter 221 and a thickness gauge 222 are connected to the terminal computer 220. The terminal computer 220 sends the measured values obtained by the lens meter 221 and the thickness gauge 222 and the measured values obtained 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 the factory 2
00, and “order” means that the spectacle store 100 requests the factory 200 to send a lens before edging or a beveled lens.

FIG. 2 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. The operator of the optician 100 uses the keyboard input device to specify the type of lens to be ordered or inquired while looking at the order entry screen.

FIG. 6 is a diagram showing an example of an order entry screen used for designating this lens type. That is, the type of lens is specified in the column 61. In other words, the product classification code from the manufacturer is entered, which allows the lens material,
Refractive index, coating, lens color, optical design of lens surface, 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.

[S2] In column 61 of FIG.
(17) Specifying JP-A-6-34923. [S3] FIG.
In the left column of the column 62, input the prescription values of the lens such as the spherical power, the cylindrical refractive power, the astigmatic axis, and the addition of the left and right eyes, and similarly, in the right column of the column 62, enter the lens processing designation value. 63 indicates the information of the spectacle frame (frame), and column 64 indicates the layout information such as PD, NPD (near PD), SEG (SEGMENT).
A bevel shape including a bevel mode and a bevel position, such as a small ball position, ET (minimum edge thickness value), and EP (eye point), is input. The layout information specifies an eye point position which is a pupil position on the eyeglass frame. As for the information of the eyeglass frame, all the frame information such as the product classification symbol of the maker, the frame size, the frame material, the color, the shape, the type of the lens and the like are to be input. If only one type of lens is specified in S1, up to two types of spectacle frames can be specified.

"Processing 1" to "Processing 4" on the order entry screen are portions for inputting general processing designations. Lens processing designation values include lens thickness, edge thickness, prism, Each designated value such as eccentricity, outer diameter, and lens surface curve (base curve) can be input. 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. “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”, or “auto bevel”. How much the position of the front bottom of the bevel is positioned from the front surface of the lens toward the back surface is determined. 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. 1 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 spectacles 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
Error display on the screen display device.

[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, measures polar coordinate values of the shape of the bevel groove three-dimensionally, Get. Next, the data is smoothed, and the frame curve CV, the peripheral length L of the bevel groove,
Frame PD (pupil distance) FPD, frame nose width DB
L, the A size and the B size which are the maximum widths of the left and right and up and down of the frame frame, the effective diameter ED, and the tilt angle TILT which is the angle formed by the left and right frame frames are calculated. Then, the frame shape measuring device 102 sends the calculated data to the terminal computer 101 and causes the screen display device to display the data.
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 spectacles store 100, if 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 there is a gap. Check that measurement is not performed while the space is open, and perform measurement again. 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 allowable, a confirmation is input to confirm that the difference can be maintained. If this is not permissible, 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 input that uses this as the frame shape value may be input. May be.

[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 previously stored measurement values. [S
8] According to the measurement number, the stored frame shape information of the corresponding spectacle frame is read from the internal storage medium.

[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. During the transmission, the terminal computer 10 of the optician 100
1 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. 3 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 data such as lens information, prescription values, frame information, layout information, and bevel information are transmitted via a public communication line, the spectacle lens processing design program starts via the spectacle lens order receiving system program, and the lens processing design calculation is performed. Done. That is, a desired lens shape including the bevel shape is calculated.

First, based on the frame shape information, the prescription value, and the layout information, it is checked whether the outer diameter of the designated lens is sufficient. 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).

If there is no shortage in the outer diameter of the lens, the front curve of the lens is determined. For this determination, the left and right prescription values of the lens are first used to determine the left and right front curves separately, and then the left and right front curves are aligned. Note that this step is skipped in the case where the left and right front curves of the aspheric single focus lens are prohibited from being aligned. The table curve referred to here is approximated by a quadratic or quaternary aspherical surface with an aspheric single focus lens, and approximated by a secondary or quadratic aspherical surface in each direction with a progressive multifocal lens, as necessary. Have been.

Next, the thickness of the lens is determined. Normal,
Since the outer diameter of the lens is determined by the prescription value, the thickness of the lens is determined by the outer diameter, the standard edge thickness, and the prescription value. In addition, when the processing specification for setting the thickness of the lens to the minimum necessary value is set, the edge shape of the entire circumference for each radius in each direction of the frame is determined by the frame shape information, the layout information, and the prescription value. Examine the thickness and determine the lens thickness as specified.

After the thickness of the lens is determined, the back curve of the lens, the prism, and the prism base direction are calculated, and thereby the overall shape of the lens before the edging is determined. 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 portion below the value, the shortage direction and the shortage amount in the boxing system are calculated, and the process returns to the eyeglass lens ordering system program to display the shortage direction and the shortage amount on the terminal computer 101 of the eyeglass store 100 (see step S146).

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 designated 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 they are determined and their data are stored, their values are read and passed to the next step. Also in the case of the stock lens, the surface curve of the aspheric single focus lens and the progressive multifocal lens is approximated to the aspheric surface as necessary, similarly to the case of the polished lens.

[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.

First, the three-dimensional data of the frame shape is corrected according to the material of the spectacle frame, and the error of the frame shape data caused by the material of the spectacle frame is corrected. Next, the positional relationship between the eyeglass frame shape and the eyeglass lens is determined three-dimensionally based on the eye point position.

When the lens is held for performing the beveling processing, a processing origin and a processing axis which is a rotation axis, which are used as references, are determined, and the data thus far are coordinate-transformed into the processing coordinates. Then, the three-dimensional bevel tip shape (including the bevel trajectory) is determined according to the designated bevel mode. At this time, on the assumption that the three-dimensional bevel tip shape is deformed without changing the bevel circumference, the expected deformation amount is calculated. If the bevel mode does not change the frame, the image cannot be deformed. If the bevel does not stand without the deformation, an error code to that effect is output (see step S145).

The calculated deformation amount is compared with a deformation limit amount provided for each material of the spectacle frame. If the deformation amount exceeds the limit amount, an error code to that effect is output (see step S145 described later). ).

Since the eye point position is shifted by deforming the three-dimensional bevel tip shape, the error is corrected. As described above, the design calculation of the three-dimensional beveling is performed.

[S13] If the designation in step S9 of FIG. 2 is "order", the flow proceeds to step S15. On the other hand, if "inquiry", the result of the inquiry is transmitted to the terminal computer 101 of the eyeglass store 100 via the public communication line. To step S14.

[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 lens shape at the time of completion of the beveling processing 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. [S1
41] It is determined whether an error has occurred in the machining design calculation in steps S11 and S12 of FIG. If not, the terminal computer 1 of FIG.
The incoming call screen of the order entry shown in FIG. 8 is displayed on the screen of the image display device 01. Then, the layout confirmation diagram shown in FIG. 9 is displayed by further operating the soft keys. After that, select the content to be displayed by operating the soft keys (7).
In Japanese Patent Application Laid-Open No. 6-34923, the process proceeds to any one of steps S142 to S144. Also, if there is an error,
Step S145 or step S according to the content of the error
Proceed to 146.

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 the two types of lenses, and these can be visually confirmed. Further, the maximum and minimum edge thicknesses, the respective directions (triangular marks in the figure) and the lens weight can be confirmed. Thus, it is possible to easily confirm whether or not there is an error in the input of the layout information.

[S142] When the three-dimensional view is selected by operating the soft keys, this step is executed and the three-dimensional view is displayed. FIG. 10 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 from any direction. In the figure, for example, the first combination Are displayed, and an image of the lens viewed from the direction of 30 ° in the right lateral direction of the spectacle wearer and 30 ° below is displayed. In this screen, curves on the front and rear surfaces of the lens (displays 11 and 12) and reference lines along the curves on the front and back surfaces of the lens (displays 13 and 14)
And so on, so that a visual confirmation can be made as if an actual lens were viewed. In the spectacles shop 100, if the projection of the front surface of the lens is worrisome from the appearance of the front and back surfaces of the lens on this screen, the front curve of the spectacle lens can be changed to a shallow one, or In addition, the type of spectacle lens is changed to a lens having a design in which the front curve of the lens is a shallow curve.

[S143] When the lens cross section and side view are selected by operating the soft keys, this step is executed.
A bevel confirmation diagram is displayed. FIG. 11 shows an example of a screen of a bevel confirmation diagram displayed on the screen display device. In this screen, a side view of the right lens of the first combination (display 11)
1) and a cross-sectional view (display 112) are displayed.
You can see the shape of the lens and the positional relationship between the edge and the bevel in detail. The display 113 is a view of the shape of the frame viewed from the front, and displays the viewing direction of the side view shown by the display 111 (display 113a) and the cutting position of the sectional view shown by the display 112 (display 113b). ing.

At the spectacles store 100, the display screen indicates
Check the degree of protrusion of the lens surface and the edge thickness, and change the designation as necessary. [S144] When the bevel balance display is selected by operating the soft key, this step is executed, and a left and right bevel balance diagram is displayed.

FIG. 12 shows an example of a left and right bevel balance diagram screen displayed on the screen display device. On this screen,
The first combination is displayed, and the edge thickness and the bevel position of both the left and right lenses are displayed from 0 ° to 360 °.
Further, on this screen, the edge thickness in the desired direction and the distance from the lens surface to the bottom position on the front side of the bevel (advance amount) are displayed in increments of 10 °. On this screen, the positional relationship between the edge of the left and right lenses and the bevel can be seen at once, so that this display is effective for those who have specialized knowledge of lens processing.

At the spectacles store 100, looking at the screens shown in FIGS. 11 and 12 described above, if the positional relationship between the edge and the bevel is poor, the bevel mode designated in step S3 in FIG. 2 is changed. , The type of spectacle lens 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. 3, 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 up 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. 3, this step is executed. That is, a message "Could not be obtained" is displayed on the screen display device. Where Sof
(8) JP-A-6-34923 When "layout display" is selected by key operation, an error display diagram is displayed.

FIG. 13 is a diagram showing an example of a screen of an error display diagram displayed on the screen display device. On this screen,
The first combination is shown, where the lens outer diameter is insufficient (displays 131 and 132) and the degree thereof (displays 133 and 13).
4) is visually displayed, whereby the contents 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.

Returning to FIG. 3, [S15] If the designation in step S9 in FIG. 2 is "order", this step is executed, and an error occurs in the machining design calculation in steps S11 and S12 in FIG. It is determined whether or not it has been performed. If an error has occurred, the result is sent to the terminal computer 101 of the spectacles store 100 via the public communication line, and the process proceeds to step S17. On the other hand, if no error has occurred, the result is transmitted to the eyeglass store 10 via the public communication line.
0 to the terminal computer 101 and proceeds to step S16, and proceeds to step S18 and thereafter (FIG. 4) to execute actual processing.

[S16] An indication that "the order has been accepted" is displayed on the screen display device of the terminal computer 101 of the spectacles 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.

[S17] 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, an indication that "order cannot be accepted" is displayed.

FIG. 4 is a flow chart showing the actual steps of polishing the back surface of the lens, edging the lens, beveling, etc., performed in the factory 200. The number following S represents the step number. Hereinafter, description will be made with reference to FIG.

[S18] If "order" has been designated in step S9 and no error has occurred in the lens or bevel processing design calculation, this step is executed. That is, the result of the lens processing design calculation in step S11 is previously stored in the terminal computer 2 in FIG.
10, the rough rubbing machine 211 and the sanding polisher 2
In step 12, the curved surface of the back surface of the lens is finished in accordance with the transmitted calculation result. Furthermore, dyeing and surface treatment are performed by a device (not shown), and processing up to before the edging is performed. When a stock lens is designated, this step is skipped.

[S19] A quality inspection of the optical performance and appearance performance of the spectacle lens processed up to before the edging in the execution of step S18 is performed. For this inspection, the terminal computer 220, the lens meter 221, and the thickness gauge 222 shown in FIG. 1 are used, and a three-point mark indicating the optical center is provided. When the lens before the edging process is ordered from the spectacle store 100, the lens is shipped to the spectacle store 100 after performing the quality inspection.

[S20] Based on the result calculated in step S12, the terminal computer 230 of FIG.
31, the block jig for holding the lens is fixed at a predetermined position of the lens by the image processor 232 or the like. That is, the surface of the spectacle lens is photographed by the TV camera by the image processor 232, and the photographed image is displayed on a CRT screen. Further, the layout mark image of the lens before the edging is superimposed on the image. Here, the position of the lens is determined such that the three-point mark applied to the lens matches the layout mark image projected on the CRT screen, and the position where the block jig is to be fixed is determined. Then, a blocking position mark indicating a position where the block jig should be fixed is painted on the lens by the marker 231. The block jig is fixed to the lens according to the blocking position mark.

[S21] The lens fixed to the block jig is mounted on the lens grinding device 241 shown in FIG. Then, in order to grasp the position (inclination) of the lens mounted on the lens grinding device 241, at least three positions of the front surface or the rear surface of the lens specified in advance are measured. The measured value obtained here is stored for use as operation data in step S22.

[S22] The main frame 201 in FIG. 1 performs the same calculation as the beveling design calculation in step S12. However, in actual processing, an error may occur between the calculated lens position and the actual lens position. Therefore, when the coordinate conversion into the processing coordinates is completed, this error is corrected. That is, the error between the calculated lens position and the actual lens position is corrected based on the measured values of the three points measured in step S21.
Otherwise, the same calculation as the beveling design calculation in step S12 is performed to calculate the final three-dimensional bevel tip shape.

Then, based on the calculated three-dimensional bevel tip shape, three-dimensional processing trajectory data on processing coordinates when grinding with a grindstone having a predetermined radius is calculated. [S23]
The processing locus data calculated in step S22 is transmitted via the terminal computer 240 to the NC-controlled lens grinding device 24.
Sent to 1. The lens grinding device 241 has a rotating grindstone for grinding and performing beveling and beveling of a lens that is controlled to move in the Y-axis direction (perpendicular to the spindle axis direction). An NC control grinding device capable of at least three-axis control of rotation angle control (spindle shaft rotation direction) and Z-axis control for controlling movement of a grindstone or lens in the Z-axis direction (spindle axis direction) to perform beveling. In accordance with the transmitted data, edge trimming and beveling of the lens are performed. In addition, although the lens lab (9) JP-A-6-34923 cutting device 241 performs a grinding process using a grindstone, a cutting device having a cutter and performing a cutting process can be used instead.

[S24] The terminal computer 250 and the bevel vertex shape measuring device 251 measure the circumference and the shape of the bevel vertex of the bevel-finished lens. That is, the lens which has been processed in step S23 is taken out and attached to the shape measuring instrument 251 with the block jig attached, the bevel vertex measuring probe is brought into contact with the bevel vertex of the lens, and measurement is started. Let it. The measured value is input to the terminal computer 250 and displayed on the display device.

Then, the terminal computer 250 calculates the design bevel vertex perimeter obtained by the calculation in step S12,
Compare the measured value measured by the shape measuring instrument 251,
If the difference between them is within 0.1 mm, for example, it is determined that the product is acceptable.

Further, the design A size and design B size of the frame created by the calculation in step S12 are compared with the A size and B size measured by the shape measuring instrument 251. If it is within 1 mm, it is judged as a passing product.

[S25] The bevel position and the shape of the lens after the beveling are compared with the drawing of the beveling position indicated in the processing instruction created based on the result calculated in step S12, and the quality of the bevel is compared. To inspect. Also,
An appearance inspection is performed to determine whether scratches, burrs, chips, or the like have occurred on the lens due to the edging process.

[S26] The beveled lens thus completed is shipped to the spectacle store 100. In the above embodiment, the expected lens shape at the time of completion of the beveling is displayed on the screen to confirm the finish. However, it is not always necessary to display the expected lens shape at the time of completion of the beveling on the screen. It is possible to confirm only by displaying only the availability information of whether or not lens processing including processing is possible. That is, the permission information is desirably character information that can represent even the contents of the error, but it is possible to display the permission information by simply 1-bit information indicating whether or not the error is permitted.

[0085]

As described above, according to the present invention, since the three-dimensional frame shape information obtained by the three-dimensional shape measuring device is inputted to the ordering computer, the ordering and order processing of the spectacle lens can be extremely performed. It is possible to do it efficiently. Further, by displaying an error message, it is possible to significantly reduce the risk of performing useless processing.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a spectacle lens supply system of the present invention.

FIG. 2 is a flowchart showing a flow of an initial input process in an eyeglass shop.

FIG. 3 is a flowchart showing a flow of processing in a factory, and steps of confirmation and error display performed in an eyeglass store by transfer from the factory.

FIG. 4 is a flowchart showing actual processes such as polishing of a back surface of a lens, edging of a lens, and beveling performed in a factory.

FIG. 5 is a diagram showing details of step S14 in FIG. 3;

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 three-dimensional view screen displayed on the screen display device.

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

FIG. 12 is a diagram illustrating an example of a left and right bevel balance diagram screen displayed on the screen display device.

FIG. 13 is a diagram illustrating an example of an error display diagram screen displayed on the screen display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 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 grinder 220 Terminal computer 221 Lens meter 222 Thickness gauge 230 Terminal computer 231 Marker 232 Image processing machine 240 Terminal computer 241 Lens grinding device 242 Chuck interlock 250 Terminal computer 251 Shape measuring instrument 300 Public communication line

Continuation of front page (56) References JP-A-4-13539 (JP, A) JP-A-59-55411 (JP, A) JP-A-2-24621 (JP, A) JP-A-61-274859 (JP, A) JP-A-59-93420 (JP, A) JP-A-60-15623 (JP, A) JP-A-3-113417 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB G02C 13/00 B24B 9/14

Claims (2)

(57) [Claims] A computer installed on the ordering side of the spectacle lens, and a manufacturing computer connected to the ordering side computer so that information can be exchanged , wherein the ordering side computer is required for ordering the spectacle lens.
Has a function of performing various processes, and the
In a spectacle lens supply system having a function of performing a process necessary for receiving an order of a spectacle lens, the ordering side computer includes spectacle lens information,
Eyeglasses frame information including dimensional frame shape information and frame material information, while inputting information necessary for framing including prescription values and layout information, while the manufacturing-side computer inputs the information . Frame
Bevel shape based on information necessary for
Calculates the desired lens shape including
Processing to determine whether or not lens processing is possible based on
Output the processing result to the ordering computer.
Thus , at the ordering side computer, at least the lens
Before and after placing an order, and based on the processing results.
So that the initial input contents of the above information can be changed.
And a supply system of a spectacle lens, wherein the order-side computer, is connected to the three-dimensional frame rim shape measuring apparatus, measuring the three-dimensional frame rim shape
The output result of the setting device is used as the three-dimensional frame shape information.
A display device is connected to the ordering computer, and a screen of the display device displays the three-dimensional frame shape measuring device.
As the output result of the location, at least the frame curve, the circumference of the bevel groove, frame PD (pupillary distance), by which the tilt angle is an angle of the left and right framework appear,
A spectacle lens supply system, wherein the output result can be confirmed . 2. The spectacle lens according to claim 1, wherein an error message is displayed on the screen when the result of measurement by the three-dimensional frame frame shape measuring device has a large difference between the left and right frame frames. Supply system.