JP2003287723A - Supply system for spectacle lens - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supply system for spectacle lenses which includes grooving and includes an input step of measuring the exact shape data on spectacle frame on an order placement side and providing the fabrication side with this data. <P>SOLUTION: While the measurement numbers put on the spectacle frames to be subjected to shape measurement are inputted to a terminal computer of a spectacle store, the spectacle frames to be measured are fixed to a frame shape measuring instrument and the measurement is started. Calculation is made by steps, such as S603 for calculating the peripheral lengths of the spectacle frames, S610 for calculating the A and B sizes and the positions of frame centers, S612 for calculating the PDs of the frames, etc., and the values thereof are inputted to the terminal computer and further the fabrication side is provided with the data by making communication with the fabrication side computer. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supply of spectacle lenses.
System, especially in the supply system.
The measurement data of the spectacle frame. 2. Description of the Related Art A spectacle lens sent from a spectacle lens ordering side.
Eyeglass lens based on information about the lens and eyeglass frame
Processing side plays the desired lens shape including the bevel shape.
Calculation, and based on the result, add lens processing including beveling.
Information on whether the process is possible or not,
Ordering the expected finished shape of the spectacle lens including the engineering shape
Replies to the ordering party, and the
Lens that displays the expected shape on the screen and includes beveling
Check whether machining is possible or not.
Check the ideal shape, and based on this check, determine the optimal bevel.
Eyeglasses that determine the spectacle lens that has been ordered and place an order
A lens supply system has been proposed by the applicant
(Patent Document 1). [0003] In order to further improve the completeness of this system
Need to be done to balance the left and right of the glasses frame
There is. In general, the left and right eyeglass frame shapes may be the same
Although aesthetically pleasing, transport and storage after the frame is manufactured
Subjected to shape deformation due to handling and change of frame material over time,
There may be differences. Leave this difference and frame it
Then, for example, like a bifocal lens,
In the attached lenses, each of the left and right lens frames
A case where the layout positions are different occurs. And this
The difference between the left and right positions of the spectacles on the eyeglasses is the third party other than the wearer
When viewed from the perspective, it looks very unbalanced. There
In order to balance the left and right of the eyeglass frame,
The eyeglass frame shape has been made the same. Sand
That is, for example, it is disclosed in Japanese Patent Publication No. 3-25298.
As you can see, either the left or right eyeglass frame shape
Use it as a spectacle frame shape to process spectacle lenses.
The spectacle lens after deforming the shape of the spectacle frame
That was being done. [Patent Document 1] Japanese Patent Application No. 4-165912 [0005] [Problems to be Solved by the Invention]
The most important part of the eyeglass lens supply system
Is to accurately grasp the shape data of the eyeglass frame
is there. A beard using a balling machine usually carried out at an eyeglass shop
In the lens processing, the eyeglass frame and lens are at hand.
Therefore, the shape deformation state of the eyeglass frame, the thickness of the lens, etc.
Can be visually grasped by the processor. Therefore, the processor
Formulation based on years of experience and know-how in intuition
Can be handled while comparing with. That is, the factory
Frames shipped from are sold through various distribution channels
It arrives at the eyeglass store, but during this distribution process the eyeglass frame is shaped
Shape deformation. In such cases, skilled processing
Looks at the deformed spectacle frame and returns here.
Considering the degree of shape restoration when the lens is framed,
Grinding such as beveling of the lens was performed. Only
In the eyeglass lens supply system, the processor
Can be used in remote locations without looking at the eyeglass frame
Must respond only with the processed data sent via the communication line.
Accurate eyeglass frame shape data
And transmission and reception of the data was desired. The present invention
It is made in view of such a point, the glasses on the ordering side
Import measurement data to determine the exact shape of the frame
Provide a supply system for spectacle lenses including a force step
You. [0006] The present invention has been made to solve the above-mentioned problems.
The first means is the ordering side of the spectacle lens
Computer and the ordering computer
With a manufacturing-side computer connected to
The eyeglass lens supply system,
The computer activates the eyeglass lens by a predetermined input operation.
It has the function to perform the processing required for the note.
Force operation means that a desired spectacle frame is
Measurement, the eyeglass frame circumference, eyeglass frame pupil
The distance between the holes, the vertical and horizontal size of the eyeglass frame, and the frame
3D glasses frame shape information obtained by calculating
Enter eyeglass frame information including eyeglass frame material information
Eyeglass lens supply system characterized by having a step.
Stem. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;
It will be described based on the following. FIG. 2 is an eyeglass frame shape isomorphism of the present invention.
Overall configuration of an eyeglass lens supply system in which the method is implemented
FIG. On the ordering side of the eyeglass shop 100 and the lens processing side
A lens manufacturer's factory 200 is connected to a public communication line 300
Connected. The figure shows only one optician
However, actually, a plurality of eyeglass shops are connected to the factory 200. [0008] There is an online terminal
Computer 101 and frame shape measuring instrument 102
Is placed. The terminal computer 101 has a keyboard input device.
And a CRT screen display device,
Connected to line 300. To terminal computer 101
Is the measured value of the spectacle frame from the frame shape measuring device 102
Is input, and calculation processing is performed by the terminal computer 101.
As well as eyeglass lens information from the keyboard input device.
Information, prescription values, etc. are input. And terminal computer 1
01 is output to the factory via the public communication line 300.
200 transferred to the mainframe 201 online
You. The terminal computer 101 and the mainframe 2
01, a relay station may be provided. Ma
For the installation location of the terminal computer 101,
It is not limited to the store 100. The main frame 201 is provided with an eyeglass lens processing machine.
Program, beveling design program, etc.
Lens shape including bevel shape based on force data
The state is calculated, and the calculation result is transmitted via the public communication line 300.
To the terminal computer 101 and display it on the screen display device.
And display the calculation result at each terminal of the factory 200.
Computers 210, 220, 230, 240, 250
Via the LAN 202. The terminal computer 210 includes a rough rubbing machine.
(Curve generator) 211 and sanding grinder 212
Is connected, and the terminal computer 210
According to the calculation result sent from the program 201, the rough rubbing machine 211
And the sanding grinder 212 to control the surface
Finish the curved surface of the back of the lens. The terminal computer 220 has a lens manufacturer.
Terminal 221 and the thickness gauge 222 are connected, and the terminal computer
220 is obtained by a lens meter 221 and a thickness gauge 222.
Measured values and the performance sent from the mainframe 201
Comparing with the calculation result, finish the curved surface
In addition to the acceptance inspection of the passed lens,
A mark (three-point mark) indicating the optical center is provided. The terminal computer 230 has a marker 23
1 and the image processor 232 are connected, and a terminal computer
230 is the calculation result sent from the mainframe 201
When edging and beveling the lens according to
The blocking position where the lens should be blocked (held)
Used to make blocking position marks
You. According to this blocking position mark,
The jig is fixed to the lens. The terminal computer 240 has a machining
NC control lens grinding device 241
The terminal interlock 242 is connected to the
The calculator 240 receives the calculation result sent from the mainframe 201.
Edge trimming and beveling according to the results.
U. The terminal computer 250 has a bevel top
Is connected to the terminal computer 25
0 is the beveled state measured by the shape measuring instrument 251.
Change the circumference and shape of the lens from the main frame 201
The pass / fail judgment of the processing is performed by comparing with the sent calculation result. In the system configured as described above, the glasses
The flow of processing until the lens is supplied will be described below with reference to FIG.
This will be described with reference to FIG. Note that this process flow
Are available in two types, "inquiry" and "order".
"Match" is when lens processing including beveling is completed
Eyeglass shop 100
To place 200, and "order"
We will send the lens before processing or the lens after beveling
That is, the eyeglass store 100 requests the factory 200. FIG. 3 shows an initial input process in the eyeglass store 100.
It is a flowchart which shows the flow of. In the figure, the number following S
The letter indicates the step number. [S1] Terminal of spectacle store 100
Lens order inquiry processing program of computer 101
Is started and the order entry screen is displayed on the screen display device.
Is displayed. The operator of the optician 100 is
Ordering by keyboard input device while looking at bird screen
Or specify the type of lens to be inquired
Do. That is, the type of lens is specified, or
Is a lens that has a beveled finish
Or no edging and beveling
The lens thickness to the minimum required.
Processing designation to be specified, edge of minus lens stands out
Processing to remove chamfers and polish the parts
Perform the specification etc. [S2] The color of the lens is designated.
[S3] Lens prescription value, lens processing designation value, spectacle lens
Layout to specify frame information and eye point position
Enter information, bevel mode, bevel position and bevel shape.
Power. In the bevel mode, where the lens edge
"1: 1", "1: 2", "convex"
Tracing, Frame Tracing, and Auto
Mode, and you can select and enter
You. Here, for example, “convex” refers to the lens surface (front
This is a mode in which a bevel is made along the surface. When the bevel position is input, the bevel mode is set to "convex".
Tracing, Frame Tracing, and Auto
Is effective only when the
Specify how far from the lens surface to the rear side
Specified in units of 0.5 mm. [S4] Here, the target eyeglass frame
On the other hand, the frame by the frame shape measuring machine 102 of FIG.
It is determined whether or not the shape measurement has already been completed. Done
If so, the process proceeds to step S7. If not, the process proceeds to step S7.
Proceed to step S5. [S5] First, the terminal computer of the spectacles store 100
Printer 101, the lens order inquiry processing
The processing is passed from the gram to the frame shape measurement program.
You. Then, it is attached to the spectacle frame whose shape is to be measured.
Enter the measured number. Also, the frame material (me
Tar, plastic, etc.)
Specify whether bending is possible. [S6] The spectacle frame to be measured is framed.
The measurement is started by fixing to the beam shape measuring device 102. Frey
The outline of the structure of the memory shape measuring instrument 102 will be described later with reference to FIG.
In addition, the details of step S6 are described in FIG.
It will be described later with reference to FIG. The measurement measured by the frame shape measuring instrument 102
Calculation processing in the terminal computer 101 for fixed values
Is performed, and the result is displayed on the screen of the terminal computer 101.
Displayed on the display device. Note that there is a large disturbance in the measured values.
Or there is a big difference in the shape of the left and right frame frames
In that case, an error message to that effect is displayed on the screen display device.
Is displayed. At the eyeglass store 100, an error message is displayed.
When displayed on the screen display device, the error message
Check according to the contents of the page and measure again. [S7] The frame shape has already been measured, and the result is
If stored, read the stored measurement.
Input the measurement number attached to the eyeglass frame.
You. [S8] According to the measurement number, the corresponding glasses
Internally stores the stored frame shape information about the frame.
Read from storage media. According to the above steps S1 to S8
Information, spectacle lens information, spectacle frame information, prescription value, layout
Information, processing instructions that are at least one of processing instruction information
Case data is sent. [S9] The user designates "inquiry" or "order". The results obtained by performing the above steps
Data such as lens information, prescription values, frame information, etc.
Via the communication line to the mainframe 201 of the factory 200
Can be FIG. 4 shows the flow of processing in the factory 200.
And at the eyeglass store 100 by transfer from the factory 200
Flow chart showing confirmation and error indication steps
It is. In the figure, the numbers following S represent step numbers. [S11] Main frame 2 of factory 200
01 is an eyeglass lens ordering system program, eyeglass lens
Processing design program and bevel processing design program
System is provided. Lens information, prescription value, frame information
Reports, layout information, bevel information, etc.
When sent via the communication line, the eyeglass lens ordering system
The eyeglass lens processing design program starts via the program
Then, a lens processing design calculation is performed. That is, bevel
A desired lens including the shape is calculated. That is, the outer diameter of the designated lens is insufficient.
Check if the lens has an insufficient outside diameter.
Calculates shortage direction and shortage in boxing system
And display it on the terminal computer 101 of the spectacle store 100
Return to the eyeglass lens ordering system program
You. If there is no shortage in the outer diameter of the lens, the lens
Is determined. Next, determine the lens thickness
When the lens thickness is determined, the back curve of the lens,
Calculate the prism and prism base directions,
The overall shape of the lens before edging is determined. Here, the entire circumference of each moving radius in each direction of the frame is
Check the edge thickness, and find that there is
Check how it is. If there is a place below, boxin
Direction and the amount of deficiency in the system,
0 to display on the terminal computer 101
The process returns to the order receiving system program. If there is no shortage of the edge thickness on the entire circumference,
Weight, maximum and minimum edge thickness and their orientation etc.
calculate. And it is necessary to process the back of the lens.
To the terminal computer 210 of the factory 200
Calculate the value. The above operation is performed by the terminal computer 210,
By rough rubbing machine 211 and sanding polishing machine 212,
Required when lens polishing is performed before edging
The various calculated values are passed to the next step.
It is. In addition, a stock lens is designated, and a rimming process is performed.
If the previous lens polishing is not performed,
Lens outer diameter, lens thickness, front curve, back
Curves are predetermined and their data are recorded.
Since these values are remembered, these values are read and
Is the outer shape of the lens and the edge thickness sufficient, just like the product?
Check and pass to the next step. [S12] Next, the main frame 201
Then, through the eyeglass lens ordering system program,
The machining design program starts, and the bevel machining design calculation is performed.
Be done. First, according to the material of the spectacle frame, the spectacle frame
Corrects the three-dimensional data of the shape, and the material of the eyeglass frame
Of the eyeglass frame shape data caused by the above. Next
The relationship between the eyeglass frame shape and the eyeglass lens
Is determined three-dimensionally based on the Hold lens for beveling
The reference machining origin and the machining axis that is the rotation axis.
Therefore, the coordinates of the data so far are converted into the machining coordinates. So
Then, 3D bevel tip shape (including bevel trajectory)
Is determined according to the designated bevel mode. That
When changing the 3D bevel tip shape, changing the bevel circumference
And the expected amount of deformation
Is calculated. When the bevel mode is a frame
Since deformation is not possible when frame bending is not possible,
If there is no bevel without it, an error code to that effect
Output the password. The calculated deformation amount is calculated by
Compare with the limit of deformation provided for each material and exceed the limit
If so, an error code to that effect is output. In addition,
By deforming the three-dimensional bevel tip shape,
Since the point position is shifted, correct the error
I do. In addition, correction of a restoration error is also performed. These processes are
It can be done selectively. As described above, three-dimensional beveling design
Perform the operation. [S13] If the designation in step S9 of FIG. 3 is "order"
If it is “inquiry”, proceed to step S15
If the result of the inquiry is sent to an eyeglass store via a public
100 to the terminal computer 101 in step S1
Proceed to 4. [S14] Main frame 2 of factory 200
01, based on the result of the query
When the terminal computer 101
Display the expected shape or error status of the
I do. The operator of the spectacles store 100 checks the displayed content.
Therefore, the designated input information is changed or confirmed. That is, step S11 of FIG.
An error occurred in the machining design calculation in step S12
If not, the image of the terminal computer 101 in FIG.
Display the lens thickness and lens weight on the screen of the display sequentially.
Specify the order entry incoming screen to be displayed and the glasses frame
How the lens is arranged according to the layout information
Layout confirmation diagram and frame
The left and right lenses that are framed in the
3D view from the desired direction, lens shape, edge and bevel
Bevel confirmation diagram showing the positional relationship with
The edge thickness of the other lens and the bevel position along the bevel
The expanded left and right bevel balance diagram is displayed. Further, step S11 and step S11 in FIG.
In the machining design calculation in step S12, an error
If there is, screen display of the terminal computer 101 of FIG.
A message is displayed on the device according to the nature of the error.
You. [S15] The designation in step S9 of FIG.
If it is “order”, execute this step and execute the step shown in FIG.
In the machining design calculation in step S11 and step S12
To determine whether an error has occurred. An error occurred
If so, the result is sent to the eyeglass store 1 via the public communication line.
00 to the terminal computer 101 at step S17.
Proceed to. On the other hand, if no error has occurred, the result
To the terminal computer of the eyeglass store 100 via a public communication line.
Data 101, and proceeds to step S16.
Proceed to step S18. [S16] Terminal computer of the spectacles store 100
Table indicating that the order has been accepted
Perform the following. This ensures that the frame can be framed
Ordered lenses before edging or beveling
Can be confirmed. [S17] The ordered lens is set in the lens processing setting.
Error occurred in total calculation or beveling design calculation
Because it is a lens that can not be processed,
"Cannot be applied". [S18] "Order" is specified in step S9
And lens processing design calculation or beveling
If no error occurred in the machining design calculation of
In the case of the factory 200, polishing of the back of the lens
Actual processing such as edge trimming and beveling.
U. That is, the lens in step S11 is
The processing design calculation result is stored in the terminal computer 210 of FIG.
Has been sent, the rough rubbing machine 211 and the sanding polisher 212
According to the calculation result sent,
Raise. In addition, dyeing and table
Surface processing is performed, and processing up to the time before edging is performed.
In addition, the use of stock lenses that have completed such processing
If specified, these machining steps are skipped
You. And the eyeglass lens processed until before the edging process
Perform quality inspection of optical performance and appearance performance. For this test,
The terminal computer 220 of FIG. 2, the lens meter 221,
The thickness gauge 222 is used, and a three-point mark indicating the optical center is displayed.
Will be applied. In addition, the lens before the edging process is
When ordering from 00, the above quality inspection was performed
Thereafter, the lens is shipped to the spectacle store 100. Next, the result calculated in step S12
, The terminal computer 230 of FIG.
1. A block for holding a lens by the image processor 232 or the like.
Fix the jig at a predetermined position on the lens. This block
The lens fixed to the jig is used for the lens grinding device shown in FIG.
241. The main frame 201 shown in FIG.
Perform the same calculation as the 12 beveling design calculation and perform 3D
Calculate the bevel tip shape. However, in actual processing,
The calculated lens position and the actual lens position
Error may occur, so coordinate conversion to machining coordinates
Is completed, this error is corrected. Then, the calculated three-dimensional bevel tip
Processing when grinding with a grinding wheel of a predetermined radius based on the shape
The three-dimensional machining locus data on the coordinates is calculated. This calculated
The processing locus data obtained via the terminal computer 240
It is sent to an NC controlled lens grinding device 241. Lens Lab
The shaving device 241 rims the lens according to the transmitted data.
And beveling. Finally, the terminal computer 250 and the
The bevel processing completion level is measured by the shape
Measure the perimeter and shape of the bevel vertex of the lens. Terminal
The computer 250 is obtained by the calculation in step S12.
Measured by the bevel vertex circumference and the shape measuring instrument 251
The measured values are compared and the differences are
If it is within mm, it is judged as a pass product. The bevel processing completed as described above
The rising lens is shipped to the spectacle store 100. FIG.
Is used for measuring the shape of the spectacle frame performed in step S6.
1 shows a schematic structure of a frame shape measuring instrument 102 used.
It is a perspective view. In addition, about the frame shape measuring instrument,
Japanese Patent Application Laid-Open No. 1-305308 filed by the present applicant
There is a detailed disclosure, and in this embodiment, the frame shape measurement
Use a container. The frame shape measuring instrument is a spectacle frame (not shown).
Retained so that it does not move to the specified position by the frame holding means
Measuring the shape of the spectacle frame Fr of the spectacle frame F
A fixed section 1 is provided. The measuring unit 1 is a U-shaped turntable 2
The turntable 2 has a tab attached to its lower end face.
Imming pulley (not shown), timing belt 4 and
And Θ direction by the motor 6 via the timing pulley 5
Is driven to rotate. The angle of this rotation is recorded on the turntable 2.
Attach the timing pulley (not shown) attached
Belt 7 and a timing pulley 8
Detected by the rotary encoder 9. Motor 6
And the rotary encoder 9 are provided in the frame shape measuring instrument.
The substrate 10 (in FIG. 5, the other parts of the measuring instrument are
Although only a part is shown, it is actually under the turntable 2
On one side), and
Imming pulley and turntable 2 are mounted on bearings not shown.
Therefore, it is rotatably mounted on the substrate 10. The turntable 2 of the measuring section 1 has two side plates 11, 1
2 and a rectangular central plate 13 connecting these two side plates
It has become. Between the side plate 11 and the side plate 12, two
The slide guide shafts 14, 15 are fixed in parallel
I have. Along these slide guide shafts 14, 15,
The horizontal slide plate 16 is slidably guided in the E direction.
ing. For this guidance, the slide plate 16 is
And three rotatable slide guide rollers 17,1
8 and 19 are provided. In this case, one slide guide
And two slide guide rollers 17, 1
8 is in contact with the other slide guide shaft 15
Slide guide rollers 19 come into contact with each other,
Guide rollers 17, 18, and 19 are slide guide rollers.
Slip each of the shafts 14 and 15 from both sides.
It rolls along the guide shafts 14 and 15. The slide plate 16 has a slide direction E
The constant load spring 20 acts on the slide plate 16 on one side.
It has been pulled towards the plate 12. This constant load spring 20
The shaft 22 and the bracket 23 are wound around the bushing 21.
And is fixed to the side plate 12. Constant load spring 20
Is attached to a slide plate 16. Constant load
The spring 20 connects a stylus 30, which will be described later, to the inner periphery of the spectacle frame Fr.
Has the effect of pressing against the groove. The movement amount R of the slide plate 16 in the E direction is variable.
Reflective linear encoder 24 as a position measuring scale
Is measured. The linear encoder 24 is mounted on the turntable 2
Scale 25 extending between the side plate 11 and the side plate 12
Fixed to the slide plate 16 and along the scale 25
Detector 26, amplifier 27, and this amplifier
Flexible cable 2 for connecting detector 27 and detector 26
It consists of eight. The amplifier 27 is fixed to the side plate 12
Attached to the bracket 29. The movement of the slide plate 16 causes the detector 2 to move.
6 moves while keeping a certain distance from the surface of the scale 25
You. In response to this movement, the detector 26 outputs a pulse signal.
Output to amplifier 27 connected by flexible cable 28
I do. The amplifier 27 amplifies this signal and generates a counter
(Not shown) and output as the movement amount R. A slide plate 16 has a stylus as a stylus.
The irrus 30 is held. This stylus 30 is
Sliding shaft in sleeve 31 fixed to ride plate 16
It can move freely in the vertical direction (Z-axis direction)
It is rotatably supported. The stylus 30 has an abacus ball shape
It has a head 32, and this head 32 acts on the constant load spring 20.
As a result, it comes into contact with the inner circumferential groove of the spectacle frame Fr,
It rolls more along the inner circumferential groove of the spectacle frame Fr. At this time, the stylus 30 is shaped like a spectacle frame Fr.
Move in the radial direction corresponding to the shape. This radial movement
As described above, the amount R is set between the sleeve 31 and the slide plate 16.
And is measured by the linear encoder 24 via the The stylus 30 is a car with a frame Fr.
Move in the Z-axis direction in response to the This Z-axis movement
Detecting the quantity is a Z formed as a displacement measurement scale
It is an axis measuring device 33. This Z-axis measuring device 33 is a slide
The stylus 30 is fixed to the plate 16 and moves in the Z-axis direction.
With built-in charge coupling located on both sides of stylus 30
Element (CCD) line image sensor and light source
Detected as displacement amount Z by photodiode (LED)
I do. Next, the frame constructed as described above
The operation of the shape measuring device will be described. Glasses frame F is shown
Do not hold the stylus fixed on the eyeglass frame holding means
30 is brought into contact with the V-shaped inner peripheral groove of the spectacle frame Fr.
And the motor 6 is rotated by a control device (not shown).
You. Thereby, the rotation connected by the timing belt 4
The table 2 rotates, and the stylus 30 is inserted into the inner circumferential groove of the spectacle frame Fr.
Rolls while in contact. The rotation of the measuring unit 1 is timing
By rotating the rotary encoder 9 connected by the belt 7,
It is detected as a rotation angle (θ). Stylus radius 30
The amount of movement in the direction
Detected as the movement amount R of the plate 16 in the E direction,
Of the stylus 30 by the Z-axis measuring device 33
It is detected as the axial movement amount Z. These circles
The values θ, R, and Z forming the cylinder coordinates are measured continuously.
Rather than intermittently measured at predetermined increments of the rotation angle (θ).
Input to the terminal computer 101 in FIG.
It is. Therefore, this input coordinate value is hereinafter referred to as three-dimensional measurement.
Fixed shape data (Rn, θn, Zn) (n = 1, 2, 3,
.., N). N is the number of measurements in one revolution
Represents a number. Hereinafter, in this embodiment, the subscript n will be used.
(N = 1, 2, 3,..., N)
And vectors are spatially arranged in the order of the numerical value of the subscript n.
And the period is N for this subscript n
Data. When the turntable 2 makes one rotation, the eyeglass frame is held.
The holding means slides a predetermined amount while holding the spectacle frame F.
Move the stylus 30 to the other eyeglass frame
Then, the shape of the other eyeglass frame is measured. Glasses
The predetermined slide amount of the frame holding means is set to a fixed value in advance
Measurement of this set value and the left and right spectacle frames Fr
Know the relative positional relationship between the frames from the data
it can. This set value is three-dimensionally expressed, and
Target position data (δX, δY, δZ). These data
The data is also input to the terminal computer 101 in FIG. What
The terminal computer 101 has various constants, for example,
Radius SR, inner peripheral groove angle BA, inner peripheral groove width B of the stylus 30
W and the like are input in advance. FIG. 6 shows the terminal core to which these data are sent.
Showing the procedure of calculation processing in the computer 101
3 is a chart showing processing contents in step S6 in FIG.
Equivalent to. In the figure, the numbers following S represent step numbers. [S601] Three-dimensional measured shape data (R
n, θn, Zn) is strictly the head 3 of the stylus 30.
2 is the data representing the trajectory of the central axis, the inner circumferential groove of the eyeglass frame
Since the shape is not shown, the correct eyeglass frame shape (the inner
In order to obtain the shape, the tip of the stylus 30 (the inner circumference)
(The part that contacts the bottom of the groove)
(In this embodiment, the calculation for this envelope is offset
Calculation). This will be described with reference to FIGS.
You. FIG. 7 shows the shape of the inner peripheral groove of one eyeglass frame.
Of the center axis of the stylus head in three-dimensional coordinates
FIG. 8 shows the style projected on the XY plane.
The locus 41 of the central axis of the lath head 32 and the eyeglass frame on one side
It is a figure which shows the inner peripheral groove shape 43 of FIG. First, as shown in FIG.
Measured shape data (Rn, θn, Zn) (n = 1, 2,
,..., N) are the rectangular coordinate values sharing the origin 42
(Xsn, Ysn, Zn) (n = 1, 2, 3,...,
N). Next, as shown in FIG.
3 is the normal direction of the locus 41 of the central axis of the stylus head 32
The shape is deformed by the radius SR of the stylus 30 in the direction
Focusing on the point, the inner peripheral groove shape 43 is calculated. That is,
The point of the j-th surface of the locus 41 of the central axis of the stylus head 32 (X
sj, Ysj) is defined as (SVxj, S
Vyj), the rectangular coordinates of the corresponding inner circumferential groove shape 43
The value (Xj, Yj) is the normal vector to (Xsj, Ysj).
(SVxj, SVyj). This
By calculating this from j = 1 to j = N, the inner circumferential groove shape
Coordinate value (Xn, Yn) (n = 1, 2, 3,..., N)
Is calculated. Note that the Z-axis coordinate value Zn of this inner peripheral groove shape is
Is equal to Zn in the rectangular coordinate values (Xsn, Ysn, Zn).
No. [S602] By the way, the same spectacle frame is measured.
Even if the stylus shape is different,
The position of the tip of the lath head 32 changes and moves away from the inner circumferential groove.
May occur, and as a result, in step S601
The shape of the determined inner peripheral groove changes. Also a stylus
The radial direction of the head 32 is always a frame shape measuring device
While on a plane perpendicular to the Z-axis direction of 102
Since the lens frame has a shape that also changes in the Z-axis direction,
The circumferential groove is perpendicular to the Z-axis direction of the frame shape measuring instrument 102.
May have a slope with respect to the plane. Also in this case,
The position of the tip of the stylus head 32 changes according to
You. This step changes the stylus position as described above.
To determine the circumferential shape of the bottom of the inner circumferential groove in consideration of
You. Hereinafter, description will be made with reference to FIGS. FIGS. 9 and 10 show the inner peripheral groove 44 and the styler.
FIG. 9 is a perspective view showing the eyeglass frame 32 and FIG.
Does not change in the Z-axis direction, but the stylus tip is at the bottom of the inner circumferential groove
Fig. 10 shows the case where the eyeglass frame cannot be contacted.
Changes in the Z-axis direction, so the stylus tip is
The case where the bottom of the circumferential groove cannot be contacted is shown. FIG. 11 is shown in FIG.
Plane of the inner peripheral groove 44 and the stylus head 32 to be formed
FIG. FIG. 12 shows the inner circumferential groove 44 shown in FIG.
FIG. 25 is an XY plan view of the stylus head 32, and FIG.
It is a top view which passes through the circle 32d shown by 0. Figure 13 is the eye
It is a ZX top view of a mirror frame and a lens bevel. The shape of the spectacle frame as shown in FIG.
Direction, the stylus head 32 and the inner circumferential groove
The contact state with 44 is as shown in FIGS.
The stylus head 32 has the same inner circumferential groove shape.
Varies depending on the shape of Therefore, the stylus head
Distance H between the tip 32a of the base 32 and the bottom 44a of the inner circumferential groove 44
n is the inner circumferential groove angle BA, groove width BW, stylus head 32
From the angle SA of the tip of the stylus and the width SW of the stylus head 32
Ask. That is, as shown in FIG.
In the case of BA, the tip 32a of the stylus head 32 is always
Since it is in contact with the bottom 44a of the inner circumferential groove 44, Hn = 0
Become. Further, as shown in FIG.
If BW ≧ SW, the upper end 32 of the stylus head 32
b and the lower end 32c contact the wall surface of the inner circumferential groove 44
Then, the height Vb is obtained from SW and SA.
The height Tb is calculated from the distance Hn and the distance Hn based on the following equation.
Ask for. Hn = Tb−Vb Further, FIG.
If SA> BA and BW <SW as shown,
The side surfaces of the irrus head 32 are formed on the upper edges 44b, 44 of the inner peripheral groove 44.
c, the height Vc is determined from BW and SA,
Further, the height Tc is determined from BW and BA, and is calculated based on the following equation.
The distance Hn is determined. Hn = Tc-Vc As shown in FIG. 10, the shape of the spectacle frame is Z-axis.
Direction, the stylus head 32 and the inner circumferential groove
The contact state of 44 is such that the inner peripheral groove 44 is a plane perpendicular to the Z-axis direction.
And the angle TA changes. With this change
The inner circumferential groove shape coordinate value (X
n, Yn), an error occurs.
Need to do. That is, the tip 3 of the stylus head 32
When the angle SA of 2a is equal to or less than the inner circumferential groove angle BA,
The size of the angle TA formed by the circumferential groove 44 and a plane perpendicular to the Z-axis direction
Regardless, the tip of the stylus head 32 must be
4. Contact the wall of No. 4. Therefore, the tip of the stylus head 32
Error correction in the state of contact between the end and the wall surface of the inner peripheral groove 44
You only need to think about it. First, the inner circumferential groove angle BA and the angle T
A from the flat including the tip portion 32a of the stylus head 32.
The plane (the plane including the X axis and the Y axis in FIG. 10) is the inner circumference
Angle formed by two line segments La and Lb formed intersecting groove 44
Find the degree β. Then, the tip 3 of the stylus head 32
The distance Hn between 2a and the bottom 44a of the inner peripheral groove 44 is defined as an angle β.
From the radius SR of the tip 32a of the stylus head 32.
I will. That is, first, as shown in FIGS.
A circle having a radius SR of the tip portion 32a of the stylus head 32
Simultaneously touch two line segments La and Lb intersecting at an angle β.
Distance between contact 44d and contact 44e
Ask for. Also, between the upper edges 44b and 44c of the inner circumferential groove 44
Find the distance BDW. Note that the two line segments La and Lb
When not touching the circle of the tip 32a of the stylus head 32
Translates these line segments so that they touch this circle
From the distance SDW. Then, as shown in FIG.
When BDW ≧ SDW, the tip of the stylus head 32
The end 32a has an inner periphery at the contact points 44d and 44e.
Because it is in contact with the wall of the groove 44,
Find the height VSa and calculate the height TS from SDW and β.
a is obtained, and the distance Hn is obtained based on the following equation. Hn =
TSa-VSa Further, BDW <as shown in FIG.
In the case of SDW, the tip 32a of the stylus head 32 is
Since it contacts the upper edges 44b and 44c of the inner peripheral groove 44, the BDW
And SR to determine the height VSb, and BDW and
The height TSb is obtained from β, and the distance Hn is obtained based on the following equation.
I will. Hn = TSb−VSb Distance thus obtained
Hn is calculated over one round of the spectacle frame, and is calculated by the correction amount Hn.
(N = 1, 2, 3,..., N). Next, the tip 32 of the stylus head 32
When the angle SA of a is larger than the inner circumferential groove angle BA,
The size of the angle TA formed by the circumferential groove 44 and a plane perpendicular to the Z-axis direction
Depending on the upper end 32b and the lower part of the stylus head 32,
The end 32c comes into contact with the wall surface of the inner peripheral groove 44,
The tip 32a of the lath head 32 is not necessarily the wall of the inner circumferential groove 44.
Do not touch the surface. Therefore, the upper end 3 of the stylus head 32
2b and lower end 32c are in contact with the wall surface of inner circumferential groove 44
A correction amount Hn (n = 1, 2, 3,...,
N). That is, first, the stylus head 32
From the tip 32a to the upper end 32b and the lower end 32c
The position of the inner peripheral groove 44 where it contacts the wall surface is considered.
Here, the shape of the stylus head 32 is the upper end direction and the lower end direction.
Since the direction is symmetric, the stylus head 32
Consider only the area from the tip 32a to the upper end 32b. Figure
As shown in FIG. 10, the tip portion 32a of the stylus head 32
O1 is the center of the circle, and the distance from this center O1 in the Z-axis direction.
Stylus head 32 centered on point O2 separated by d
32d on the side surface of the inner peripheral groove 44 is in contact with the wall surface of the inner peripheral groove 44.
And A plane passing through the circle 32d (the XY plane in FIG. 10)
(Parallel plane) is shown in FIG. FIG. 25 (B) shows FIG.
FIG. 5 (A) is a partially enlarged view of FIG. In FIG. 25, first,
Water from the bottom 44a of the inner circumferential groove 44 to the center O2 of the circle 32d
Find the horizontal distance ds. Here, the wall surface of the inner circumferential groove 44
The angle β * formed by the lines 44a-44b and 44a-44c, etc.
The direction of the dividing line is the vertical direction, and the direction perpendicular to this bisector
Is the horizontal direction. ds is the following from the angle TA and the distance d.
Given based on the formula. ds = d / tan TA
The wall surface lines 44a-44b of the inner peripheral groove 44 and the center O of the circle 32d
When the point of intersection with the vertical line passing through 2 is 44a *, the inner circumferential groove is
Vertical distance ts from bottom 44a of 44 to point 44a *
(D) is obtained from the distance ds and the angle β *, and this distance t
s (d) is a function using d as a parameter. When
At this time, the point 44a * is moved to the inner circumferential groove 4 in FIGS.
Assuming that the bottom 44a is 4, the description will be made with reference to FIGS.
Of the circle 32d by the same method as the calculation of the distance Hn
It is possible to calculate the distance hn (d) between the lower end and the point 44a *.
it can. The distance hn (d) calculated here is a parameter of d
Function. Note that the symbol (*
) Is the figure under these assumptions
11 and 12 show corresponding parts. Further here, the circle
Vertical from the center O2 of 32d to the bottom 44a of the inner peripheral groove 44
The distance TO (d) in the direction is calculated based on the following equation. T
O (d) = sr (d) + hn (d) + ts (d) sr
(D) is the radius of the circle 32d where d is a parameter.
It is. TO (d) is a function using d as a parameter.
ing. And the circle 32d is the tip of the stylus head 32.
From the end 32a (d = 0) to the upper end 3 of the stylus head 32
When the distance changes to 2b (d = SW / 2), the distance
The value d0 of the distance d at which TO (d) is maximized is determined. this
Stylus head 3 centered on position at distance of value d0
The circle on the side of No. 2 is the circle that actually touches the wall surface of the inner peripheral groove 44.
is there. The distance Hn at this time is calculated based on the following equation.
You. Hn = TO (d0) -SR Note that FIG.
The cases described by reference are rare cases
In order to increase the calculation processing speed, it may be omitted.
Good. By the way, the shape required for beveling
The lens after the beveling was fitted to the measured spectacle frame
Shape of the tip of the bevel in the state assumed
You. Here, this is called the bevel tip trajectory shape.
I do. The position 55 of the bevel tip trajectory shape is shown in FIG.
Thus, the inner peripheral groove angle BA, the inner peripheral groove width BW, and the bevel
Once the apex angle YA is determined, the position at a certain distance from the bottom of the inner circumferential groove
It is in. This distance is referred to as bevel groove distance BY.
You. Find the bevel tip trajectory shape as the final spectacle frame shape
To obtain the correction amount Hn (n = 1, 2, 3,...)
・, N) minus the distance between bevel grooves BY
Correction Hn (n = 1, 2, 3,..., N). The correction direction of the correction amount Hn is shown in FIG.
As shown, the inner circumferential groove shape coordinate values (Xn, Yn, Zn) are
Since it is equal to the normal direction of the shape projected on the XY plane,
Corrected corrected shape 45 deformed by correction amount Hn in the normal direction
Coordinate value (Xn, Yn, Zn) (n = 1,
2, 3,..., N). In this embodiment, the stylus head 3
2 has an abacus ball shape, but the shape of the stylus head is
A section that is rotationally symmetric with respect to the Z-axis direction and includes the rotationally symmetric axis.
Stylus head tilted if surface shape is known in advance
It is possible to grasp the state of contact with the inner peripheral groove 44 by calculation.
Yes, so it is possible to make corrections as above
It is. [S603] Corrected in step S602
Glasses frame shape coordinate value (Xn, Yn, Zn) (n = 1,
2, 3, ..., N) to the shape of the spectacle frame (the bottom circumference of the inner circumferential groove)
The circumference FLN of the shape) is calculated. Eyeglass frame shape circumference FL
N is the following formula as the sum of the distances between each point of the spectacle frame shape:
It is calculated by (1). FLN = Σ [((Xi−Xi + 1) 2+ (Yi
−Yi + 1) 2 + (Zi−Zi + 1) 2) 1/2] (i = 1 to N)
(1) However, in the above equation (1), i = N
In this case, i + 1 is set to 1. [S604] In general, if the spectacle frame is
The shape of the spectacle frame is measured by being held by the
When it is done, the front direction of the left and right eyeglass frames is frame shape
The measuring device 102 is inclined with respect to the Z-axis direction.
In order to grasp each inclination, the front direction of the left and right eyeglass frames
Is determined. In the present invention, the front direction of the eyeglass frame is
A two-dimensional shape that projects the mirror frame onto a plane perpendicular to the front direction is enclosed
By defining the direction in which the area
And grasp the front direction of the spectacle frame. Front of this frame
There are various methods for defining the direction.
You. FIG. 14 shows a strict definition method among them.
An example is shown, which is located at approximately the center of the eyeglass frame shape coordinate value.
G (for example, each of the X, Y, Z components of the eyeglass frame shape coordinate value)
Center of gravity given as a weighted average of
Then, each coordinate value (Xn, Yn, Zn) (n =
A vector Vn ending at (1, 2, 3,..., N)
FIG. 4 is a perspective view showing (n = 1, 2, 3,..., N).
The unit vector FV in the front direction of the spectacle frame is the vector Vn
Using (n = 1, 2, 3,..., N), the following equation (2)
Can be obtained by FV = Σ (Vi × Vi + 1) / || Σ (Vi
× Vi + 1) || (i = 1 to N) (2) where
“×” represents the cross product of vectors, and when i = N, i +
1 is set to 1. The front direction of the spectacle frame is approximately obtained.
You can also. In this embodiment, this approximate method is used.
This method will be described with reference to FIG. FIG.
It is a perspective view showing the front direction of one eyeglass frame. First,
The spectacle frame shape coordinate value (Xn,
Yn, Zn) (n = 1, 2, 3,..., N)
A is the point on the eyeglass frame shape where Xn is the maximum, and Xn is the minimum
The point on the eyeglass frame shape that becomes the value is the eye where B and Yn are the maximum value.
Points on the mirror frame shape are on the eyeglass frame shape where C and Yn are the minimum values
Is D. Next, the vector from point A to point B
Is H, and the vector from point C to point D is V. And that
The unit vector FV in the front direction of the eyeglass frame
Vectors that are perpendicular to the vectors H and V.
The vector FV is calculated. [S605] Steps S601 to S604
Is performed on the left and right eyeglass frame shape measurement data.
The answer is affirmative (YES).
Proceed to step S606, and if negative (NO), step S
Return to 601. [S606] Left and right eyes obtained so far
Lens frame shape coordinate values (Xn, Yn, Zn) (n = 1, 2,
3, ..., N) have different coordinate origins.
Using the relative position data (δX, δY, δZ)
Convert to coordinate values of the same coordinates with one point as the origin
I do. This will be described with reference to FIG. FIG. 16 shows an arrangement on the same three-dimensional rectangular coordinates.
It is a perspective view of the placed left and right eyeglass frames. First, the right glasses
Frame shape coordinate values (Xn, Yn, Zn) (n = 1, 2, 3,
.., N) in the X-axis, Y-axis, and Z-axis directions, respectively.
Coordinates translated by X / 2, -δY / 2, -δZ / 2
The right eyeglass frame shape coordinate value (Xrn, Yr
n, Zrn) (n = 1, 2, 3,..., N)
In both cases, the unit vector in the front direction at this time is again
r. Next, the left eyeglass frame shape coordinate value (Xn, Y
n, Zn) (n = 1, 2, 3,..., N) on the X axis, Y
ΔX / 2, δY / 2, δZ /
Calculate the coordinate value translated by 2 and re-frame the left eyeglass frame
Coordinate values (Xln, Yln, Zln) (n = 1, 2,
3,..., N) and the front direction at this time
The unit vector is set to FVl again. [S607] The left obtained in step S606
From the unit vectors FVr and FVl in the front direction of the right eyeglass frame
The front direction of the glasses is calculated, and the front direction is equal to the Z-axis direction.
The left and right eyeglass frame shape coordinate values (Xrn, Yr
n, Zrn), (Xln, Yln, Zln) and left and right
Rotate the unit vectors FVr and FVl in the front direction of the eyeglass frame
Moving. This will be described with reference to FIG. FIG. 17 is a front view of the left and right eyeglass frames.
Front vector unit vector for vector FVr, FVl and glasses
FIG. 4 is a perspective view showing the FVM. In this embodiment, wearing glasses
At the time, the left and right eyeglass frames are
Of the glasses
The front direction is represented by the front direction unit vector FV of the left and right eyeglass frames.
It is defined in the direction of the vector of the sum of r and FVl. Sand
The unit vector of this sum vector is
The direction unit vector is FVM. Next, the front direction of the glasses coincides with the Z-axis direction.
So that the right eyeglass frame shape coordinate value (Xrn, Yrn,
Zrn) (n = 1, 2, 3,..., N) and left eye
Lens frame shape coordinate values (Xln, Yln, Zln) (n = 1,
2, 3, ..., N) and the front direction of the left and right eyeglass frames
Unit vectors FVr and FVl are rotated around the origin.
A new converted value is calculated. [S608] Step S
The left and right eyeglass frame shape coordinate values (Xrn,
Yrn, Zrn), (Xln, Yln, Zln)
The datum line of the glasses in the XY plane and the X-axis direction
The datum line coincides with the X-axis direction
So that the left and right glasses frame shape coordinate values (Xrn, Yr
n, Zrn), (Xln, Yln, Zln) and left and right
Transforms the unit vectors FVr and FVl in the front direction of the eyeglass frame
I do. That is, first, the eyeglasses fall in the front direction of the calculated eyeglasses.
Using a two-dimensional shape that projects the left and right eyeglass frames on a straight plane,
A unit vector in the same direction as the tangent line that touches the upper part of the left and right eyeglass frames.
And the same direction as the tangent line that touches below the left and right eyeglass frames.
The direction of the sum with the unit vector is the datum line direction of the glasses
Is calculated as This will be described with reference to FIG. FIG. 18 shows an XY plane (in the front direction of the glasses).
Vertical plane) projected on the left and right eyeglass frames
is there. First, touch the left and right eyeglass frame shapes simultaneously above the eyeglasses.
Angle θa between the upper tangent line L1 to the X-axis direction and the spectacles
Tangent line to the right and left eyeglass frames at the same time
An angle θb between L2 and the X-axis direction is obtained. Next, glasses
The angle θd formed by the datum line 46 with the X-axis direction is
Since these angles are intermediate between the angle θa and the angle θb,
An average value is obtained, and the average value is defined as an angle θd. Next, the datum line of the glasses is in the X-axis direction.
The right side converted in step S607 so as to match
Eyeglass frame shape coordinate values (Xrn, Yrn, Zrn) (n =
1, 2, 3,..., N) and the left eyeglass frame shape coordinate value
(Xln, Yln, Zln) (n = 1, 2, 3,...)
·, N) and the front unit vector of the left and right eyeglass frames
Rotate FVr and FVl by the angle θd about the Z axis as the rotation axis
The moved new conversion value is calculated again. [S609] Conversion is performed again in step S608.
Left and right spectacle frame shape coordinate values (Xrn, Yrn, Zr
n), (Xln, Yln, Zln) based on the distance between eyeglass frames.
Calculate the separation. This will be described with reference to FIG. FIG. 19 shows left and right eyeglasses showing the distance between eyeglass frames.
It is a perspective view of a frame. That is, the right eyeglass frame shape coordinate value
Among (Xrn, Yrn, Zrn), Xrn is the maximum value.
And the left eyeglass frame shape coordinate value (Xln, Yln,
Zln), a point T at which Xln is the minimum value is obtained,
Vector that projects the vector from point S to point T onto the ZX plane
Determine the length DBL of the torr. This length DBL is the width of the nose
In this embodiment, the distance between the spectacle frames is used for the nose width DBL.
And represent. [S610] Conversion is performed again in step S608.
Left and right eyeglass frame shape coordinate values (Xrn, Yrn, Zr
n), (Xln, Yln, Zln) and left and right eyeglass frames
Left and right based on the front direction unit vectors FVr and FVl of
A size of eyeglass frame shape (horizontal size of frame frame)
Size), B size (vertical size of the frame frame) and
Calculate geometric center (frame center) coordinates
In addition, these left and right eyeglass frame shape coordinate values (Xrn, Yrn,
Zrn), (Xln, Yln, Zln) were calculated
With each geometric center as the origin, the front direction unit of the left and right eyeglass frames
Coordinate values obtained by matching the vectors FVr and FVl in the Z-axis direction
Respectively. This will be described with reference to FIG.
You. In the following steps S610 to S612, special
Since there is no need to distinguish between left and right,
(Xn, Yn, Zn) (n = 1, 2, 3,..., N)
And the front unit vector of the spectacle frame is denoted by FV.
These are both left and right.
It is. FIG. 20 shows that the front direction of the spectacle frame is in the Z-axis direction.
XY plan view of eyeglass frame shape after conversion to match
It is. That is, first, the unit vector in the front direction of the eyeglass frame
Frame coordinate values so that the angle FV coincides with the Z-axis direction.
(Xn, Yn, Zn) (n = 1, 2, 3,..., N)
Is rotated around the origin. After conversion by this move
Is the maximum value of Xn in the coordinate values (Xn, Yn, Zn) of
And the minimum values are Xmax and Xmin, and the maximum value of Yn
And if the minimum values are Ymax and Ymin, the eyeglass frame shape
A size 47 is the absolute value of the difference between Xmax and Xmin.
B size 48 is determined as Ymax and Ymi.
It is obtained as the absolute value of the difference from n. Also, the coordinates of the geometric center (frame center)
(FCx, FCy) is obtained by the following equations (3) and (4).
Can be FCx = (Xmax + Xmin) / 2
(3) FCy = (Ymax + Ymin) / 2
(4) Next, the unit vector FV in the front direction of the spectacle frame is Z
The spectacle frame-shaped seat that has been previously converted to match the axial direction
The standard value (Xn, Yn, Zn) (n = 1, 2, 3,...,
N) is a coordinate with the origin at the geometric center (FCx, FCy)
Convert to standard values. Further, the spectacle frame shape coordinate values (Xn, Y
n, Zn) (n = 1, 2, 3,..., N)
Data (Xn, Yn) (n = 1, 2, 3,..., N)
Is a polar coordinate with the origin at the geometric center (FCx, FCy)
Value (Rn, θn) (n = 1, 2, 3,..., N)
Replace. Further, in the polar coordinate values (Rn, θn),
Find the maximum value of Rn and double it to calculate the effective diameter ED
I do. [S611] The geometry obtained in step S610
Frame coordinate values (Xn, Yn, Z)
n) (n = 1, 2, 3,..., N) is approximately
Is assumed to be on a closed curve on the
Find the equation of the check surface. This will be described with reference to FIG.
I do. FIG. 21 shows the equation of the toric surface.
Is a perspective view of a spectacle frame 49 for use. In the figure, toric surface
Is the center coordinate of (a, b, c), and the toric surface
Let the unit vector of the rotationally symmetric axis direction be (p, q, r),
Rotation coordinates including the center coordinates (a, b, c) of the toric surface of
In the plane perpendicular to the nominal axial unit vector (p, q, r)
The radius of the largest circle that can be formed when cutting the toric surface
Base radius RB and center coordinates of toric surface
Rotationally symmetric axis direction unit vector including (a, b, c)
Cut the toric surface in a plane parallel to (p, q, r)
The radius of the circle formed when this occurs is referred to as the cross radius RC. The toric surface is defined on three-dimensional coordinates.
For example, the center coordinates (a, b, c), the base radius RB,
Loss radius RC, rotational symmetry axial unit vector (p, q,
r) is the equation of the toric surface as a variable
Coordinate values (Xn, Yn, Zn) (n = 1, 2, 3,...)
., N) using the least squares approximation method
The center coordinates (a, b, c) and the base half
Radius RB, cross radius RC, rotational symmetry axial unit vector
(P, q, r). [S612] First, in step S608,
Using the unit vector FV in the front direction of the spectacle frame converted into degrees
Then, the tilt TILT of the spectacle frame is calculated. This is shown in FIG.
It will be described with reference to FIG. FIG. 22 shows the tilt TILT and the angle of the spectacle frame.
Description of calculation of frame PD (eyeglass frame pupil distance)
FIG. 22A is a perspective view of the tilt TILT of the spectacle frame.
FIG. 22 (B) is a plan view of the eyeglass frame. sand
In other words, as shown in FIG.
T is the unit vector FV in the front direction of the spectacle frame and the YZ plane.
Is calculated. Next, this inclination TILT and step S
Nose width DBL obtained in step 609 and step S610
Is the distance between the geometric centers based on the A size
Calculate the program PD. That is, as shown in FIG.
Since the A size differs between the left and right eyeglass frames, the right eyeglass frame
A size is Ar and A size of left eyeglass frame is Al
And the frame PD (FPD) is calculated by the following equation (5).
You. FPD = (Ar + Al) / 2 · cos (T
ILT) + DBL (5) [S613] Left and right eyes
It is desirable that the lens frame shape be the same, but in general,
There are differences. To balance the left and right eyeglass frames,
Merge processing to match the shape of the left and right eyeglass frames.
Do. The details of the merge process will be described with reference to FIG.
You. FIG. 1 shows a procedure for merging left and right eyeglass frame shapes.
FIG. 7 is a flowchart showing the process of FIG.
It corresponds to the contents of processing in. In the figure, the number following T
Indicates the top number. In the description of this flowchart,
23 and 24 as appropriate. FIG. 23 shows the left and right
FIG. 9 is a perspective view for explaining detection of a difference amount of the eyeglass frame shape.
24 is a perspective view showing a new eyeglass frame shape. FIG.
FIG. 24B is an enlarged view of a portion 52 of FIG. [T1] First, the value obtained in step S610
Cartesian coordinates of the left and right eyeglass frame shapes with the origin at each geometric center
Based on the values (Xn, Yn, Zn)
Calculate each circumference. [T2] Next, on the other hand, step S
Left and right eyeglass frames with the origin at each geometric center determined in 610
Weighted based on the rectangular coordinate values (Xn, Yn, Zn) of the shape
Calculate the average value, and position the center of gravity of the left and right eyeglass frame shapes
Is calculated. [T3] Then, the X coordinate of the left spectacle frame shape
After inverting the sign of the value, as shown in FIG.
So that the positions of the centers of gravity of the eyeglass frame shapes are located at the same point G.
And the left spectacle frame shape 51 overlaps the right spectacle frame shape 50.
Tie up. Here, each radial direction θi around the point G
Of the distance Lθi between the left and right eyeglass frames at
This is defined as a difference amount DE between the left and right eyeglass frame shapes. Here, the difference amount DE is previously
A fixed limit deformation is determined. [T4] Next, FIG.
As shown in (A), the right eyeglass frame shape 50 is fixed,
Is rotated about the point G, and the difference amount DE
Is minimized. And the difference amount DE is the minimum
The left eyeglass frame shape (hereinafter, referred to as the second left eyeglass frame shape)
The eyeglass frame shape 53) is rotated from the eyeglass frame shape 51 described above.
The rotated rotation angle θs and the rotation axis vector AV are obtained. [T5] Then, the rotation angle θs and the maximum
Compare the small difference amount with the specified rotation angle and difference amount,
Is larger than the latter (exceeds the predetermined reference value),
If the difference between the left and right eyeglass frame shapes is large, go to step T9.
If the former is smaller than the latter and the difference is smaller
If so, the process proceeds to step T6. [T6] Next, as shown in FIG.
The second left spectacle frame shape 53 and the right spectacle frame shape 5
A mixed spectacle frame shape 54 which is intermediate between 0 and 0 is calculated. sand
That is, the middle point of the left and right eyeglass frame positions in each radial direction θi
Find M. In addition, the determination of the mixed spectacle frame shape 54 is based on the midpoint
Besides adopting the second left eyeglass frame shape 53, and
And the distance between corresponding portions of the right and left spectacle frame shapes 50.
Calculate the separation as a set shape of points divided by a predetermined ratio
May be. [T7] The mixed spectacle frame shape 54
, New left and right eyeglass frame shapes are determined. Sand
That is, the coordinate value of the mixed spectacle frame shape 54 is obtained, and the
The right spectacle frame shape coordinate value, and the mixed spectacle frame shape 54
Is rotated around the rotation axis vector AV passing through the point G.
Rotate in the opposite direction by the angle of rotation θs
The spectacle frame shape coordinate value is used. [T8] The new value determined in step T7
Each perimeter of the left and right eyeglass frame shapes was calculated in step T1
Step T so that the perimeters of the left and right eyeglass frame shapes match.
The new left and right eyeglass frame shapes determined in step 7 are made similar.
Each deforms. [T9] The difference amount DE obtained here and the number of times
The turning angle θs indicates the unbalance between the left and right eyeglass frame shapes.
Values, these values are outside the specified limits
Sometimes, the merge processing is not performed and the left and right eyeglass frame
Outputs an error code indicating that the lance is abnormal
To do. When this error code is output,
Visually select the preferred one of the left and right eyeglass frame shapes.
And match the other shape to the chosen shape
To Note that the left and right eyes can be
Since the lens frame shape has changed, step S61 is performed.
0 to S612 are executed again. In the above embodiment, the third order
Although the merging process for the original shape has been described, X
Perform a two-dimensional merge process using only the Y component
You may. However, in that case, the shape of the eyeglass frame
It is assumed that the shape is on the toric surface obtained in step S611.
You. The above-mentioned invention is based on the conventional method.
Example of fixing one eyeglass frame and using it as a reference
For example, there is a large difference between the actual eyeglass frame shapes on the left and right
The other eyeglass frame shape must be significantly deformed.
No longer. However, the amount of deformation is limited. Only
Conventionally, the required deformation amount is grasped in advance and the deformation
Suitable for objectively checking whether it is possible, etc.
It also solves the problem that there was no proper method. That is, in the present invention, the difference between the left and right eyeglass frame shapes is described.
Is processed so that it can be
How to superimpose left and right eyeglass frame shapes to overlap eyeglass frame shapes
The above-mentioned problem was solved by providing a method. Specifically, the first means is to measure the shape of a spectacle frame.
To the left and right eyeglass frame shape data measured by the
Add processing including target conversion processing to overlap the left and right eyeglass frame shapes
A left and right eyeglass frame shape overlapping method for combining, wherein
Calculate the center of gravity of the left and right eyeglass frame shapes from the eyeglass frame shape data
The center of gravity of the left and right eyeglass frame shapes.
Overlap the left and right eyeglasses frame shape
How to superimpose the left and right eyeglass frames characterized by matching
Is the law. The second means is to use an eyeglass frame shape measuring device
The measured left and right eyeglass frame shape data include coordinate transformation processing.
Left and right eyes that overlap the left and right eyeglass frame shapes
A mirror frame shape superimposing method, comprising:
To calculate the position of each center of gravity of the left and right eyeglass frame shape from the
Then, the center of gravity of the left and right eyeglass frame shapes are matched and overlapped
Processing, and then each centered on the position of the center of gravity.
Calculate the sum of the distance between the left and right eyeglass frames in the radial direction
This is defined as the difference between the left and right eyeglass frame shapes.
Rotate one of the left and right eyeglass frame shapes to make it smaller
Feature that the left and right eyeglass frame shapes are overlapped
Left and right eyeglass frame shape overlapping method. According to the first means, the eyeglass frame shape
Processing to calculate the position of each center of gravity of the left and right eyeglass frame shape from the data
Then, the center of gravity of the left and right eyeglass frame shapes is matched to
I will do the processing of joining and overlap the left and right glasses frame shape
According to the second means, the position of the center of gravity is
Total distance between left and right eyeglass frames in each radial direction
Calculate the sum and use this as the difference between the left and right eyeglass frame shapes.
Of the left and right eyeglass frames so that the difference between
Rotate the left and right eyeglass frames
The difference between the left and right eyeglass frame shapes
Can be grasped. As described above, according to the present invention,
In the eyeglass lens supply system described above,
Measure the desired spectacle frame with a frame shape measuring instrument, and
From the measurement data of, the circumference of the eyeglass frame shape, the frame PD,
A size B size of eyeglass frame shape and frame center
3D glasses frame shape information obtained by calculating
Frame information including eyeglass frame material information
Inputting information to a computer
To provide the processor with highly accurate eyeglass frame shape information.
Bevel processing of lenses with higher accuracy and the lenses
In particular, and in particular, a new
Considering frame deformation errors by adopting various indexes
The eyeglass lens supply system was completed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing the procedure of merging calculation of left and right eyeglass frame shapes, and corresponds to the processing in step S613 of FIG. FIG. 2 is an overall configuration diagram of an eyeglass lens supply system in which the eyeglass frame shape assimilation method of the present invention is implemented. FIG. 3 is a flowchart showing a flow of an initial input process in an eyeglass shop. FIG. 4 is a flowchart showing the flow of processing in a factory, and the steps of confirmation and error display performed in a spectacle store by transfer from the factory. FIG. 5 is a perspective view schematically showing the structure of a frame shape measuring instrument. FIG. 6 is a flowchart showing a procedure of a calculation process in a terminal computer of an eyeglass shop, and is shown in FIG.
It corresponds to the contents of processing in. FIG. 7 is a perspective view of a locus of a central axis of a stylus head along an inner peripheral groove shape of one eyeglass frame; FIG. 8 is a plan view showing the locus of the center axis of the stylus head projected on the XY plane and the shape of the inner circumferential groove of the eyeglass frame on one side. FIG. 9 is a perspective view showing an inner peripheral groove and a stylus head. FIG. 10 is a perspective view showing an inner peripheral groove and a stylus head. FIG. 11 is a ZX plan view of the inner circumferential groove and the stylus head shown in FIG. 9; FIG. 12 is an XY plan view of the inner peripheral groove and the stylus head shown in FIG. 10; FIG. 13 is a ZX plan view of a spectacle frame and a lens bevel. FIG. 14 is a perspective view showing a vector whose starting point is a point located substantially at the center of the spectacle frame shape coordinate values and whose end point is each coordinate value of the spectacle frame shape. FIG. 15 is a perspective view showing the front direction of the spectacle frame. FIG. 16 is a perspective view of left and right eyeglass frames arranged on the same three-dimensional orthogonal coordinates. FIG. 17 is a perspective view showing a front unit vector of left and right eyeglass frames and a front unit vector of eyeglasses. FIG. 18 is a plan view showing left and right eyeglass frames projected on an XY plane. FIG. 19 is a perspective view of left and right eyeglass frames showing a distance between the eyeglass frames. FIG. 20 is an XY plan view of the spectacle frame shape after conversion so that the front direction of the spectacle frame coincides with the Z-axis direction. FIG. 21 is a perspective view of a spectacle frame for obtaining an equation of a toric surface. FIG. 22 is an explanatory diagram illustrating the calculation of the inclination of the spectacle frame and the frame PD. FIG. 23 is a perspective view illustrating detection of a difference amount between left and right eyeglass frame shapes. FIG. 24 is a perspective view showing a new eyeglass frame shape. FIG. 25 is a diagram showing a plane passing through a circle 32d shown in FIG. 10; [Description of Signs] 100: optician, 101: terminal computer, 102:
Frame shape measuring instrument, 200: factory, 201: main frame, 202: LAN, 210: terminal computer,
211 ... rough rubbing machine (curve generator), 212 ...
Sanding polishing machine, 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, 25
1: Shape measuring instrument, 300: Public communication line

Claims (1)

Claims 1. An eyeglass lens supply system, comprising: a computer installed on an ordering side of a spectacle lens, and a manufacturing computer connected to the ordering side computer so that information can be exchanged. The ordering-side computer has a function of performing a process required for ordering spectacle lenses by a predetermined input operation, and the input operation is to measure a desired spectacle frame with a frame shape measuring instrument, A spectacle frame including three-dimensional spectacle frame shape information and spectacle frame material information obtained by calculating a spectacle frame circumference, a spectacle frame pupil distance, a vertical size and a horizontal size of a spectacle frame, and a frame center from data. A system for supplying a spectacle lens, comprising a step of inputting frame information.