JP4540779B2 - Lens suction cup position setting method and lens suction cup mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, when a spectacle lens is ground into a lens shape of a spectacle by a lens grinding apparatus, a position for mounting a lens suction cup used to attach the spectacle lens to a lens rotation shaft of the lens grinding apparatus is set. The present invention relates to a lens suction cup position setting method and a lens suction cup mounting device.
[0002]
[Prior art]
Conventionally, this type of lens suction cup has a base attached to a lens rotation shaft of a lens grinding apparatus, and a suction cup provided integrally with the base. In order to grind (polished) the raw spectacle lens with this lens grinding apparatus, the raw spectacle lens is adsorbed to the suction cup of the lens suction cup, and the base of the lens suction cup is attached to the lens rotation shaft. Grinding into a target lens shape is performed with a grinding wheel that rotates while rotating the lens rotation shaft.
[0003]
The center of the lens suction cup is made coincident with the axis of the lens rotation axis, and becomes the rotation reference (rotation center) of the raw spectacle lens when the raw spectacle lens is ground. In addition, the rotation reference of the raw spectacle lens is also a reference for obtaining processing data for grinding the raw spectacle lens from the target lens shape.
[0004]
For this reason, the position serving as the rotation reference of the raw spectacle lens is obtained, and the center of the lens suction cup is adsorbed (attached) to the raw spectacle lens. On the other hand, the lens grinding apparatus grinds the raw spectacle lens into a target lens shape using processing data obtained from the rotation reference of the raw spectacle lens and the target lens shape.
[0005]
As a rotation reference of such a raw spectacle lens, it is common to select either the pupil position arranged in the lens shape of the spectacle frame or the geometric center position of the lens shape. is there.
[0006]
[Problems to be solved by the invention]
By the way, in recent years, spectacle frames having a special shape with an emphasis on fashionability, which can be said to ignore practicality, have appeared. When the lens suction cup is attracted to this type of spectacle frame, the lens suction cup may protrude from the shape of the spectacle frame if the conventional pupil position or the geometrical center position of the target lens shape is used as the reference position. is there. In this case, when the raw spectacle lens is ground by the lens grinding apparatus, there is a possibility that the lens suction cup may be shaved. The same applies to the processed spectacle lens of the spectacle frame currently in use.
[0007]
Therefore, the present invention provides a lens suction cup position setting method capable of easily mounting a lens suction cup at a position where the lens suction cup is not scraped when grinding an unprocessed spectacle lens or a processed spectacle lens at the time of frame change, and An object of the present invention is to provide a lens suction cup mounting device.
[0008]
[Means for Solving the Problems]
In order to achieve this object, the invention of claim 1 is directed to a lens adsorption used for attaching an eyeglass lens to a lens rotation shaft of the lens grinding device when the eyeglass lens is ground into a lens shape of the eyeglass by the lens grinding device. In the lens suction cup position setting method for setting the position for mounting the cup on the spectacle lens, the target lens shape Polygonal inscribed shape After obtaining the inscribed circle inscribed in the polygonal target lens shape, and simultaneously displaying the polygonal target lens shape and the inscribed circle on the display, the suction cup image of the lens suction cup is A method for setting the position of the lens suction cup in which the center of the suction cup image and the center of the inscribed circle coincide with each other when the polygonal lens shape and the inscribed circle are displayed on the display unit. And
[0013]
In order to achieve the above-mentioned object, the invention of claim 2 includes a display for displaying a spectacle lens shape, a suction cup image of a lens suction cup used to attach a spectacle lens to a lens rotation shaft of a lens grinding apparatus, and Computation control means for displaying the target lens shape simultaneously on the display means is provided, and the arithmetic control means includes the target lens shape. Polygonal inscribed shape And determining the inscribed circle inscribed in the polygonal target lens shape, displaying the polygonal target lens shape and the inscribed circle on the display, and setting the center of the suction cup image to the center of the inscribed circle. A lens suction cup mounting device configured to match and display on the display unit,
The lens suction cup mounting device includes lens suction cup mounting means for sucking the lens suction cup to the eyeglass lens.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. Device configuration
[Optical-mechanical configuration]
FIG. 1 shows an example of a raw spectacle lens suction device, which is a pivoting device (lens suction cup mounting device) A according to the present invention. The upper surface 2 of the casing 1 of the pivot A is formed as a gentle slope, and a first display 3, an observation window 4, and an input / control keyboard (operation panel) 5 are arranged on the upper surface 2. Has been. As the liquid crystal screen of the display units 3 and 7, a screen using liquid crystal such as DSTN or TFT, or a screen using black and white or color liquid crystal can be adopted.
[0015]
A half mirror 6 is attached to the lower side of the observation window 4 at an angle, and a second display 7 is disposed on the side of the incident optical path to the reflecting surface. Both the 1st display 3 and the 2nd display 7 are comprised with the electronic display like a liquid crystal display, for example.
[0016]
A lens mounting table 8 is provided on a pedestal 1 </ b> A that is an upper surface of the leg 1 </ b> C of the housing 1 below the half mirror 6. The lens mounting table 8 includes a diffusing plate 9 having a lower surface as a diffusing surface and three mounting pins 10, 11, 12 made of a transparent material planted on the diffusing plate 9. A lens (fabric lens) L, which is an unprocessed eyeglass lens (lens to be processed), is supported on the three mounting pins 10, 11, and 12 at three points.
[0017]
The luminous flux from the illumination lamp 11 disposed below the diffuser plate 9 is diffused by the diffuser plate 9 and transmitted through the lens L supported on the mounting pins 10, 11, 12. This transmitted illumination facilitates observation of the mark marks M1, M2, M3 marked on the lens L as shown in FIG. Since the mounting pins 10, 11, and 12 are transparent, even if the mark marks M1, M2, and M3 may be positioned on the mounting pin, the illumination lamp 11 that has passed through the mounting pins 10, 11, and 12 has passed through. There is an advantage that observation can be performed with a light beam.
[0018]
The distance between the plane formed by the apexes of the three mounting pins 10, 11, and 12 and the half mirror 6 is equal to the distance between the second display 7 and the half mirror 6. Thereby, the display image of the second display 7 and the lens L supported by the mounting pins 10, 11, 12 are optically synthesized by the half mirror 6 and observed by the operator through the observation window 4.
[0019]
A lamp LP for illuminating the second display 7 is built in the housing 1 below the input / control keyboard 5.
[0020]
A suction device (lens suction cup mounting means) 14 is installed on the base 1A. The suction device 14 includes a cylindrical column 14A that is planted and fixed on a pedestal 1a, and a shaft (movable shaft) 14B that is fitted and held in the cylindrical column 14a so as to be movable up and down and rotatable about an axis. And a horizontal support arm 14C provided integrally with the upper end of the shaft 14B. A holding member 14d for holding a suction cup (lens suction cup) 15 is provided at the lower end of the support arm 14C.
[0021]
The shaft 14b is rotationally driven between a retracted position indicated by a solid line and an adsorption position indicated by a broken line by a horizontal rotational driving means such as a solenoid or a drive motor (not shown). The shaft 14b is driven downward by a lifting / lowering means such as a solenoid or a drive motor (not shown) at the suction position, and the suction cup 15 held by the holding member 14d is placed on the placement pins 10, 11, and 12. The lens L is attracted. As the horizontal rotation driving means and the raising / lowering means, as shown by a broken line in FIG. 2, a motor driver MD controlled by the arithmetic control circuit 30, a support arm driving motor SAM controlled by the motor driver MD, etc. Can be used.
[0022]
A main switch 17 is disposed on the leg 1 </ b> C of the housing 1.
[Circuit configuration]
As shown in the block diagram of FIG. 2, the first display 3 and the second display 7 are connected to the arithmetic control circuit 30 via the interface circuit 31. The arithmetic control circuit 30 is composed of, for example, a microprocessor.
[0023]
A frame data input device (lens shape data input device) 40 for inputting the shape of the lens frame of the spectacle frame in which the lens L is framed can be connected to the arithmetic control circuit 30.
[0024]
An example of the frame data input device 40 is Japanese Patent Application No. 60-287491 filed earlier by the present applicant. The apparatus of this prior application uses the polar coordinate data (ρi,) as the shape of the lens frame of the spectacle frame or the shape of the template (lens shape) or the shape of the model lens of the spectacles (glass shape) (lens shape). .theta.i) (i = 0, 1, 2,... N).
[0025]
Other examples of the frame data input device 40 include a device that reads shape data of a lens frame or a template from a storage medium such as a floppy disk or an IC card, and online data with a spectacle frame manufacturer, wholesaler, or stock center. It may be a lens frame or template shape data receiver by communication.
[0026]
A frame data memory 32, a lens data memory 33, and a program memory 34 are connected to the arithmetic control circuit 30. The frame data memory 32 stores lens shape data (ρI, θI) such as a lens frame or a template input from the frame data input device 40 or a model lens of glasses (glasses). The lens data memory 33 stores specific information of a large number of lenses in advance, assuming that the lens L that is centered by the pivoting device of the present invention is a bifocal lens or a progressive multifocal lens. Is provided. The program memory 34 stores various sequence programs for the arithmetic control circuit 30.
[0027]
The arithmetic control circuit 30 is connected to the main switch 17 and the input / control keyboard 5. Further, the arithmetic control circuit 30 can be connected to a ball grinder 50 for grinding the centered lens L. An example of the ball grinder 50 is Japanese Patent Application No. 60-115079 filed earlier by the present applicant.
[0028]
Further, an actuator 35 for lighting the illumination lamps 13 and LP is connected to the arithmetic control circuit 30.
[0029]
As shown in FIG. 3A, the input / control keyboard (input means) 5 includes a suction mode switching key 51 indicated by “MODE”, a frame type selection key 52 indicated by “FRAME”, and “LENS”. It has the lens type selection key 53 shown.
[0030]
The suction mode switching key 51 is used to switch between the “optical center” mode, the “mold center” mode, and the “manual” mode as shown in FIG. This “optical center” mode is a mode for aligning the center of the suction cup 15 with the optical center of the lens L and causing the lens L to suck the suction cup 15. The “mold center” mode is a mode in which the suction cup 15 is attracted to the lens L by aligning the center of the suction cup 15 with the center of the mold (template geometric center), that is, the geometric center of the target lens shape. The “manual” mode is a mode for adjusting the suction cup 15, the target lens shape, and the position of the lens L by manual operation and causing the lens L to suck the suction cup 15.
[0031]
The frame type selection key 52 is a key for selecting the type of frame including the material of the frame, and selects “metal”, “cell”, “flat”, that is, a rimless frame, “nyroll”, and the like. This selection key 52 is for adjusting the size of the processing lens system in accordance with the frame material. The lens type selection key 53 is used to select “single pigeon”, “bifocal”, “louisin”, and the like. When “bifocal” is selected by the lens type selection key 53, an initial value of 25.0 mm may be automatically input to “HIb” in the prescription value input. .
[0032]
Further, the input / control keyboard 5 includes a left / right display switching key 54 indicated by “R / L”, an input change key 55 indicated by “CH”, a prescription value item selection / menu selection indicated by “↑”, and the like. Selection key 56, selection key 57 for prescription value item selection / menu selection indicated by “↓”, plus key 58 for prescription value numerical input indicated by “+”, prescription value numerical input indicated by “−” Minus key 59 and a determination key 60 such as a menu selection item indicated by a line feed mark. The input change key 55 indicated by “CH” is a frame geometric center distance FPD, an interpupillary distance PD, an uplift amount UP, HPD (PD / 2), a lower edge of the target lens shape to a pupil center position. Used to select items (prescription input parameters) such as distance HIb.
[0033]
Further, the input / control keyboard 5 includes a data request key 61 indicated by “DATA”, a save data call key 62 indicated by “CALL”, a data save key 63 indicated by “BLOOK”, an automatic suction key 64, and a liquid crystal. A display inversion key 65 and a lens illumination lamp ON / OFF key 66 are provided.
[0034]
In the case where the layout associated with lens processing is set by the ball grinder 50, only “DATA”, “R / L”, and “menu” are required. Also in FIG. 2, layout data is input from the ball grinder 50. Further, as indicated by the broken line in FIG. 2, the frame data from the frame data input device 40 is provided to be transmitted to the ball grinder 50, and the layout data is input from the ball grinder 50 to the calculation / control circuit 30. You may do it.
B. Action
Next, the operation of the pivoting device (lens suction cup suction device) having such a configuration will be described.
[0035]
The eyeglass frame 70 shown in FIG. 4B has a left lens frame 70L and a right lens frame 70R. In order to form such a lens shape of the lens frames 70L and 70R by grinding from the lens (raw eyeglass lens) L, the lens L is used to be attached to a lens rotation shaft (not shown) of the ball grinder. It is necessary to attract the suction cup 15 to the lens L. In the case of frame replacement, the processed spectacle lens is removed from the currently used spectacle frame, and the suction cup 15 is adsorbed to the processed spectacle lens.
[0036]
As the lens shape data used for this purpose, the frame shape (lens shape) data of the lens frames 70L and 70R is measured in advance by a lens shape measuring device (frame shape measuring device) or the like. Here, assuming that the rotation angle around the geometric center of the target lens shape is θi and the moving radius from the geometric center to the target lens shape with respect to θi is ρi, the frame shape (lens shape) data is (θi , Ρi). The obtained frame shape data (θi, ρi) is recorded on a recording medium such as a memory of a frame shape measuring apparatus, a recording medium such as a floppy disk, an IC card, a hard disk, a magneto-optical disk, an MD, a spectacle frame manufacturer, It is stored or recorded in advance as storage data in a recording medium such as a hard disk or a magneto-optical disk of a computer in a wholesale store or a stock center. The spectacle frame 70 shown in FIG. 4B has a left lens frame 70L and a right lens frame 70R that are designed to have a substantially triangular shape.
[0037]
On the other hand, when the main switch 17 is turned on, the arithmetic control circuit 30 reads the control program from the program memory 34 and is in a standby state. When the lens illumination lamp ON / OFF key 66 is turned on, the arithmetic control circuit 30 turns on the lamp 13 and the lamp LP via the actuator 35. In this state, when the lens (unprocessed spectacle lens) L with the marking points M1, M2, and M3 is placed on the placement pins 10, 11, and 12, the lens L is illuminated by the lamp 13 from below. Thereby, the lens L placed on the placement pins 10, 11, and 12 is observed from the transmitted light beam that passes through the half mirror 6 and the observation window 4. Further, the second display 7 is illuminated by the lamp LP, and the display content of the second display 7 can be visually recognized from the observation window 4 through the half mirror 6 by this illumination.
(1) Reading the shape data
When the operation control circuit 30 operates the call key 62 of the input / control keyboard 5, the storage data recorded on the recording medium is read via the frame data input device (lens shape input) 40 and the read storage is performed. Frame shape data (θi, ρi) as data is stored in a frame data memory (lens shape data memory) 32.
(2) Polygonal shape data
Also, the arithmetic control circuit 30 approximates the target lens shape of the right lens frame 70R to a linear shape from the frame shape data (θi, ρi) of the right lens frame 70R stored in the frame data memory 32, for example, and forms a polygon. The polygonal lens shape data of the polygonal right lens frame 70R is stored in the frame data memory 32.
(3) Display of polygonal lens shape, eye point and geometric center
Then, the arithmetic control circuit 30 reads the polygonal target lens shape data of the right lens frame 70R that has been polygonized from the frame data memory 32, and as shown in FIG. The display 7 displays the polygonal target lens shape 70R '.
[0038]
As shown in FIG. 4A, the lens shape of the right lens frame 70R may be displayed simultaneously with the polygonal lens shape 70R ′. The shape of the target is a solid line Like 70Ri Displayed at all times, polygonal shape 70R ' Is displayed as a dotted line (broken line). As is clear from FIG. 4 (a), the polygonal target lens shape indicated by the wavy line is determined as a size inscribed in the target lens shape indicated by the solid line. It is clear from FIG. 7 (a), FIG. 7 (b), and the like. Furthermore, the polygonal target lens shape can be set not to be displayed as desired by the user.
[0039]
Further, the arithmetic control circuit 30 determines the polygonal lens shape 70R from the frame geometric center distance FPD, HPD (PD / 2) or the like input using the input change key 55, the plus key 58, the minus key 59, and the like. The crosshair 71 and the geometric center 72 indicating the eye point IP are displayed on the first display 3 and the second display 7 so as to overlap each other. The eye point IP is composed of a Y axis 71a and an X axis 71b.
(4) Suction position setting of suction cup 15
<Auto setting mode>
a. "Light core" mode
Thereafter, when the “optical center” mode shown in FIG. 3B is selected by operating the suction mode switching key 51, the arithmetic control circuit 30 selects the outer diameter of the suction cup 15 stored in the lens data memory 33. The data and the shape data are read out, and the first display device is formed by superimposing the actual size shape of the suction cup 15, that is, the actual size suction cup image 15 'on the polygonal lens shape 70R' as shown in FIG. 3 and the second display 7.
[0040]
At this time, the arithmetic control circuit 30 sets the suction cup image 15 ′ to the first display device in a state where the center O of the suction cup image 15 ′ coincides with the eye point IP of the first display device 3 and the second display device 7. 3 and display on the second display 7
The content displayed on the second display 7 can be viewed from the observation window 4 through the half mirror 6, and the lens L on the mounting pins 10, 11, 12 is moved from the observation window 7 to the half mirror 6. Can be seen through. In addition, the center of the suction cup image 15 ′ displayed on the second display 7 is made to coincide with the center between the mounting pins 10, 11, 12. The display position of the suction cup image 15 ′ is always the same position regardless of the “optical center” mode, the “mold center” mode, and the “manual” mode.
[0041]
When the suction cup image 15 is not attracted to the lens L, the diameter of the suction cup 15 is r, and the amount of change in the diameter of the suction cup 15 when the suction cup 15 is attracted to the lens L is α. The diameter R when the suction cup 15 is attracted to the lens L is obtained as r + α. The suction cup image 15 'having the diameter R is displayed on the first and second display units 3 and 7 as described above. In this case, α can be obtained based on an elastic coefficient of an elastic member such as rubber forming the suction cup 15.
b. "Type heart" mode
When the “center” mode shown in FIG. 3B is selected by operating the suction mode switching key 51, the arithmetic control circuit 30 stores the outer diameter data of the suction cup 15 stored in the lens data memory 33. Then, the shape data is read out, and the suction cup image 15 'is superimposed on the polygonal target lens shape 70R' as shown in FIG. 4A and displayed on the first display 3 and the second display 7.
[0042]
At this time, as shown in FIG. 4 (a), the arithmetic control circuit 30 has the geometric center 72 of the suction cup image 15 'whose center is displayed on the first display 3 and the second display 7 as shown in FIG. It is displayed in a state that matches.
[0043]
The content displayed on the second display 7 can be viewed from the observation window 4 through the half mirror 6, and the lens L on the mounting pins 10, 11, 12 is moved from the observation window 7 to the half mirror 6. Can be seen through. In addition, the center of the suction cup image 15 ′ displayed on the second display 7 is made to coincide with the center between the mounting pins 10, 11, 12. The display position of the shape of the suction cup 15 is always the same regardless of the “optical center” mode, “mold center” mode, and “manual” mode.
<Manual setting mode>
By the way, when the polygonal target lens shape 70R ′ is triangular as described above, the suction cup image 15 ′ protrudes from the polygonal target lens shape 70R ′ in the “optical center” mode or the “template center” mode. .
[0044]
In such a case, the “manual” mode shown in FIG. 3B is selected by operating the suction mode switching key 51. Thereby, the arithmetic control circuit 30 reads out the outer diameter data and shape data of the suction cup 15 stored in the lens data memory 33, and superimposes the suction cup image 15 'on the polygonal target lens shape 70R' for the first display. Display on the center of the display 3 and the second display 7. At this time, the center O of the suction cup image 15 ′ is made to coincide with the geometric center 72 of the displayed suction cup image 15 ′.
[0045]
Thereafter, when the selection keys 56, 57 and the keys 58, 59 are operated, the polygonal target lens shape 70R 'and the eye point IP are moved up, down, left and right on the first display 3 and the second display 7. Can do. Therefore, the polygonal lens shape 70R ′ at the position shown in FIG. 4A and its eye point IP are shown in FIG. 5 (A) so that the suction cup image 15 ′ enters the polygonal lens shape 70R ′ by this operation. ) To the position of the broken line (b) on the first display 3 and the second display 7. Note that the polygonal target lens shape indicated by the dotted line (broken line) moves from (A) to (B) by continuing to press the switches (keys) such as the selection keys 56 and 57 and the keys 58 and 59. When the switches (keys) such as the selection keys 56 and 57 and the keys 58 and 59 are released, the target lens shape indicated by a solid line is displayed at the position (b). In other words, the target lens shape displayed as a solid line is displayed until the switches (keys) such as the selection keys 56 and 57 and the keys 58 and 59 are released.
(5) Suction to the lens L of the suction cup 15
As described above, the lens illumination lamp ON / OFF key 66 is turned on to light the lamp 13. In this state, when the lens L is placed on the placement pins 10, 11, 12, the lens L is illuminated from below by the lamp 13. Thereby, the lens L is observed from the transmitted light beam that passes through the half mirror 6 and the observation window 4. The lens (raw eyeglass lens) L has mark points M1, M2, and M3.
[0046]
On the other hand, the display content displayed on the second display 7 is reflected to the observation window 4 side through the half mirror 6 and can be visually recognized through the observation window 4. As a result, the display content displayed on the second display 7 through the observation window 4 and the lens L can be observed in an overlapping manner.
[0047]
In this state, the lens L is moved so that the mark point M2 of the lens L is aligned with the eye point IP, and the mark points M1 and M3 for the lens L are aligned with the X axis 71b of the cross line 71 indicating the eye point IP. The marking points M1, M2, and M3 are marked with a well-known lens meter to attract the lens L to the suction cup 15. Since this technique is well known, its description is omitted.
[0048]
Next, when the automatic suction key 64 for blocking is operated, the arithmetic control circuit 30 first controls the horizontal rotation driving means (not shown) to move the shaft 14b and the support arm 14c from the position indicated by the solid line in FIG. Rotate to the position of the chain line. At this position, since the center of the suction cup 15 held by the support arm 14 c coincides with the center between the mounting pins 10, 11, 12, the suction cup image 15 of the second display 7 that is visually recognized from the observation window 4. The center of ′ coincides with the center of the suction cup 15.
[0049]
When the center of the suction cup 15 held by the support arm 14c coincides with the center between the mounting pins 10, 11, 12, the arithmetic control circuit 30 controls the operation of the elevating means, and the elevating means controls the shaft 14b. Then, the support arm 14c is integrally lowered downward, and the suction cup 15 held by the holding member 14d of the support arm 14c is sucked by the lens L on the mounting pins 10, 11, and 12.
[0050]
Thereafter, the arithmetic control circuit 30 reversely controls the lifting means and the horizontal rotation driving means to return the support arm 14c to the original state.
(Modification 1)
7A and 7B show a polygonal target lens shape 80 having a trapezoidal shape obtained by linearizing the target lens shape. Also in this embodiment, when the suction cup image 15 ′ is attracted to the geometric center 72 shown in FIG. 7A, the suction cup image 15 ′ deviates from the polygonal lens shape 80. , The selection key 56, 57, the key 58, 59, etc. are operated to move the polygonal target lens shape 80, so that the suction cup image 15 'is within the polygonal target lens shape 80 as shown in FIG. This is an example of entering.
[0051]
Here, what is displayed with a broken line (dotted line) is a polygonal lens shape, and what is displayed with a solid line is a target lens shape.
(Modification 2)
8 and 9 show a model of a polygonal target lens shape 81 in which the linear target lens shape is an isosceles triangle. In the state where the center O of the suction cup image 15 ′ is located at the geometric center 72 shown in FIG. 8, the suction cup image 15 ′ deviates from the polygonal lens shape 81.
[0052]
Therefore, in this embodiment, the arithmetic control circuit 30 determines an inscribed circle 82 that is inscribed in the polygonal target lens shape 81, and the suction cup image 15 'is centered on the inscribed circle 82 at the center O1 as shown in FIG. The polygonal target lens shape 81 and the inscribed circle 82 are moved by operating the selection keys 56 and 57 and the keys 58 and 59 so that the centers O coincide. At this time, it can be easily visually confirmed whether or not the diameter of the suction cup image 15 ′ is smaller than the diameter of the inscribed circle 82.
[0053]
The operation of moving the polygonal target lens shape 81 and the inscribed circle 82 so that the center of the inscribed circle 82 coincides with the center of the suction cup image 15 ′ is automatically performed by the arithmetic control circuit 30. Also good. Also in this case, it can be easily visually confirmed whether or not the diameter of the suction cup image 15 ′ is smaller than the diameter of the inscribed circle 82. Here, the polygonal target lens shape 81 shown as a model is indicated by a broken line.
(Modification 3)
FIG. 10 shows an application example of FIG. 8 and FIG. In this modification, the polygonal target lens shape 83 obtained by the arithmetic control circuit 30 is a hexagonal shape. In this case, the arithmetic control circuit 30 obtains an assumed triangle 84 having two long sides 83a and 83b out of the six sides, and obtains an inscribed circle 85 of the assumed triangle 84.
[0054]
Thereafter, the selection key 56, 57, the key 58, 59, etc. are operated to move the polygonal target lens shape 81 and the inscribed circle 82, and the suction cup is placed at the center O1 of the inscribed circle 85 as shown in FIG. The center O of the image 15 'is made to coincide. Also in this case, it can be easily visually confirmed whether or not the diameter of the suction cup image 15 ′ is smaller than the diameter of the inscribed circle 82.
[0055]
In addition, the arithmetic control circuit 30 automatically moves the polygonal target lens shape 83 and the inscribed circle 85 so that the center of the obtained inscribed circle 85 coincides with the center of the suction cup image 15 '. You can also. Also in this case, it can be easily visually confirmed whether or not the diameter of the suction cup image 15 ′ is smaller than the diameter of the inscribed circle 82.
[0056]
Here, what is displayed with a broken line (dotted line) is a polygonal lens shape, and what is displayed with a solid line is a target lens shape.
(Other)
The configuration of the pivoting device described above can also be provided in the lens grinding apparatus. In addition, the lens grinding device is provided with a configuration other than the above-described lens suction means of the pivoting device, and other information such as the polygonal lens shape and suction cup image obtained by the lens grinding device is displayed on the pivoting device display. Thus, the suction cup can be attracted to the raw spectacle lens. Further, the configuration of the above-described shaft ejector can also be applied to a lens meter provided with a lens suction means for attracting the suction cup to the raw spectacle lens.
[0057]
Further, the lens shape data is sent from the frame data input device (lens shape measuring device) 40 of the spectacle frame to the ball grinder (lens grinding device) 50 as shown in FIG. 11, or the frame data input device of the spectacle frame. The target lens shape is sent from the target lens shape measuring device 40 to the personal computer terminal 100 as shown in FIG. 12, and the target target lens shape and the unprocessed spectacles are transferred to the target lens shape by the ball grinder (lens grinding device) 50 or the personal computer terminal 100. It is good also as a structure which performs the layout with a lens and sends the information to the axis | shaft extractor A. FIG.
[0058]
【The invention's effect】
As described above, since the inventions of claims 1 to 6 are configured, the lens suction cup is placed at a position where the lens suction cup is not scraped when grinding the unprocessed spectacle lens or the processed spectacle lens when changing the frame. Easy to install.
[0059]
According to a first aspect of the present invention, when a spectacle lens is ground into a lens shape of spectacles by a lens grinding device, a lens suction cup used for attaching the spectacle lens to a lens rotation shaft of the lens grinding device is used as the spectacle lens. In the lens suction cup position setting method of setting the position to be mounted on the polygonal lens shape obtained by polygonizing the target lens shape and displaying the obtained polygonal target lens shape on a display, After the suction cup image of the lens suction cup is displayed on the display so as to overlap the polygonal lens shape, the suction cup image and the Since the lens suction cup position is set to move relative to the polygonal target lens shape, the position at which the suction cup is attracted to the raw spectacle lens can be set arbitrarily within the polygonal target lens shape on the display. It can be set to ease.
[0060]
According to a second aspect of the present invention, when a spectacle lens is ground into a lens shape of a spectacle by a lens grinding apparatus, a lens suction cup used to attach the spectacle lens to a lens rotation shaft of the lens grinding apparatus is attached to the spectacle lens. In the lens suction cup position setting method for setting the position to be performed, after obtaining a polygonal target lens shape obtained by polygonizing the target lens shape, an inscribed circle of the polygonal target lens shape is obtained, and the polygon While the target lens shape and the inscribed circle are displayed on the display, the suction cup image of the lens suction cup is displayed on the display so as to overlap the polygonal target lens shape and the inscribed circle, and the suction cup image is Since the suction cup image and the polygonal lens shape and the inscribed circle are moved relative to each other so as to fall within the inscribed circle, the lens suction cup position setting method is used. Roughly It can be set to. Thereby, when the suction cup image is smaller than the diameter of the inscribed circle, the suction cup image can be easily set at a position that does not deviate from the polygonal target lens shape.
[0061]
According to a third aspect of the present invention, when a spectacle lens is ground into a lens shape of a spectacle by a lens grinding apparatus, a lens suction cup used to attach the spectacle lens to a lens rotation shaft of the lens grinding apparatus is attached to the spectacle lens. In the lens suction cup position setting method for setting the position to be performed, after obtaining a polygonal target lens shape obtained by polygonizing the target lens shape, the inscribed circle of the polygonal target lens shape is obtained, and the polygon While the lens shape and the inscribed circle are simultaneously displayed on the display, the suction cup image of the lens suction cup is displayed on the display so as to overlap the polygonal lens shape and the inscribed circle. Since the lens suction cup position setting method matches the center of the suction cup image and the center of the inscribed circle, the center of the suction cup image automatically matches the center of the inscribed circle. It can be displayed. At this time, if the suction cup image is smaller than the diameter of the inscribed circle, the suction cup image can be automatically and reliably set at a position that does not deviate from the polygonal target lens shape.
[0062]
According to a fourth aspect of the present invention, there is provided a display for displaying a spectacle lens shape, a suction cup image of a lens suction cup used for attaching a spectacle lens to a lens rotating shaft of a lens grinding apparatus, and the target lens shape. And a calculation control means for displaying the polygon lens shape in a polygonal shape and displaying the polygon lens shape on the display. A lens suction cup mounting device configured to move the suction cup image and the polygonal target lens shape relative to each other, and a lens suction cup mounting means for suctioning the lens suction cup to the spectacle lens. Since the lens suction cup mounting device is provided, the position where the suction cup is attracted to the raw spectacle lens is arbitrarily set on the display within the polygonal lens shape, and the raw spectacle The's when grinding the lens shape, the lens suction cup so that the position does not deviate from the target lens shape which is set on the display device can be adsorbed to the untreated eyeglass lens.
[0063]
According to a fifth aspect of the present invention, there is provided a display for displaying a spectacle lens shape, a suction cup image of a lens suction cup used for attaching a spectacle lens to a lens rotating shaft of a lens grinding apparatus, and the target lens shape. Calculation control means for simultaneously displaying and overlapping, and the calculation control means obtains a polygonal target lens shape obtained by polygonizing the target lens shape and an inscribed circle inscribed in the polygonal target lens shape, A lens suction cup mounting device configured to display the polygonal target lens shape and the inscribed circle on the display, wherein the suction cup image and the polygonal target lens shape and the inscribed circle are relatively Since the lens suction cup mounting device is provided with a moving means for moving and a lens suction cup mounting means for sucking the lens suction cup to the spectacle lens, the suction cup image is set at substantially the center in the polygonal lens shape. Kill. As a result, when the suction cup image is smaller than the diameter of the inscribed circle, the suction cup image is easily set to a position that does not deviate from the polygonal lens shape, and the raw spectacle lens is ground into the target lens shape. In addition, the lens suction cup can be attracted to the raw spectacle lens so that the lens suction cup does not deviate from the target lens shape set on the display.
[0064]
According to a sixth aspect of the present invention, there is provided a display for displaying a spectacle lens shape, a suction cup image of a suction cup used for attaching a spectacle lens to a lens rotating shaft of a lens grinding apparatus, and the target lens shape on the display means. Computation control means for displaying simultaneously and superimposed, the calculation control means obtains a polygonal shape of the polygonal shape of the target lens shape and an inscribed circle inscribed in the polygonal target lens shape, A lens suction cup mounting device that displays a polygonal target lens shape and an inscribed circle on the display, and sets the center of the suction cup image to coincide with the center of the inscribed circle and displays on the display Since the lens suction cup mounting device includes a lens suction cup mounting means for sucking the lens suction cup to the spectacle lens, the center of the suction cup image is automatically matched with the center of the inscribed circle. It is possible to display the suction cups image Te. At this time, if the suction cup image is smaller than the diameter of the inscribed circle, the suction cup image is automatically set to a position that does not deviate from the polygonal lens shape, and the raw spectacle lens is shaped into a lens shape. When grinding, the lens suction cup can be attracted to the raw spectacle lens so that it does not deviate from the target lens shape set on the display.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a pivoting device according to the present invention.
FIG. 2 is a control circuit diagram of the pivoting device of FIG. 1;
3A is an explanatory diagram of the operation panel (input / control keyboard) of FIG. 1, and FIG. 3B is an explanatory diagram schematically illustrating the contents of the keys of FIG.
4A is an explanatory diagram of the display of FIG. 1, and FIG. 4B is an explanatory diagram illustrating an example of a spectacle frame.
FIG. 5 is an operation explanatory diagram of the display shown in FIG.
6 is an operation explanatory diagram of the display shown in FIG.
7 is an explanatory view showing another example of the polygonal target lens shape shown in FIG.
FIG. 8 is an explanatory diagram showing another example of the polygonal target lens shape shown in FIG.
9 is an explanatory diagram for obtaining an inscribed circle of the polygonal target lens shape shown in FIG.
10 is an explanatory diagram showing an application example of how to obtain the inscribed circle in FIG. 8;
FIG. 11 is an explanatory diagram showing another example of the control circuit of the present invention.
FIG. 12 is an explanatory diagram showing another example of the control circuit of the present invention.
[Explanation of symbols]
3 ... 1st indicator
4 ... Observation window
5 ... Keyboard for input / control (operating means)
6 ... Half mirror
7 ... Second display
14 ... Lens suction device (lens suction means)
15 ... Suction cup (lens suction cup)
15 '... Suction cup image
30 .. arithmetic control circuit (arithmetic control means)
50 ... Ball grinder (lens grinding device)
70R ', 81 ... Polygonal target shape
82 ... Inscribed circle
L ... Lens (raw eyeglass lens)

Claims (2)

When the eyeglass lens is ground into the eyeglass shape of the eyeglass by the lens grinding device, the lens suction for setting the position where the lens suction cup used for attaching the eyeglass lens to the lens rotation shaft of the lens grinding device is attached to the eyeglass lens. In the cup position setting method,
After obtaining a polygonal shape inscribed in the shape of the target lens , and obtaining an inscribed circle inscribed in the shape of the polygonal shape,
While the polygonal target lens shape and the inscribed circle are simultaneously displayed on the display unit, the suction cup image of the lens suction cup is displayed on the display unit so as to overlap the polygonal target lens shape and the inscribed circle. A lens suction cup position setting method, wherein the center of the suction cup image coincides with the center of the inscribed circle when displaying. A display for displaying the eyeglass shape of the spectacles, and a calculation for simultaneously displaying the suction cup image of the lens suction cup used for attaching the spectacle lens to the lens rotation shaft of the lens grinding apparatus and the eyeglass shape on the display means. Control means, wherein the arithmetic control means obtains a polygonal shape inscribed in the target lens shape and an inscribed circle inscribed in the polygonal target lens shape, and the polygonal target lens shape and the inscribed circle A lens suction cup mounting device that sets the center of the suction cup image to be coincident with the center of the inscribed circle and displays on the display.
A lens suction cup mounting device comprising lens suction cup mounting means for sucking the lens suction cup to the eyeglass lens.

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