JP2006284216A - Device for attaching suction jig for aspherical spectacle lens and method for determining attachment position of suction jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To permit a suction jig to be attached to a monofocal and toric (aspherical) spectacle lens using one device. <P>SOLUTION: The device for attaching the suction jig for the aspherical spectacle lens is provided with an arithmetic means acquiring a first optical axis coordinate of the aspherical spectacle lens measured by an optical means for measurement of a characteristic and a second optical axis coordinate of the aspherical spectacle lens measured by the above optical means after rotated by 180° by a rotary means, calculating the middle coordinate between the first optical axis coordinate and the second optical axis coordinate, and specifying the attachment position of the suction jig in the aspherical spectacle lens on the basis of the middle coordinate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an aspheric spectacle lens suction jig mounting device for mounting a suction jig on the surface of a specular toric aspheric spectacle lens, and a spectacle lens suction jig mounting position. Regarding the determination method.

  Conventionally, images of reference signs such as hidden marks and small balls of spectacle lenses such as progressive multifocal lenses and bifocal lenses, or mark marks of spectacle lenses, etc. are taken, and suction positions that are geometrically related to the reference signs are taken. Devices for mounting a suction jig such as a suction cup are known (Patent Documents 1 to 7).

There is also known an apparatus that captures an image of a spectacle lens and binarizes the image signal to detect a hidden mark or the like imprinted or printed on the spectacle lens surface or the like, or irregularities or scratches on the spectacle lens surface (patent). Literatures 1-3, 5-8).
JP 2002-296144 A JP 2000-19058 A Utility Model Registration No. 3077054 DE3829488A1 publication JP 2002-139713 A JP 2002-1638 A Japanese Patent Laid-Open No. 10-282459 EP856728A2 publication JP-A-4-268433 Japanese Patent Laid-Open No. 5-196540

  However, in the conventional spectacle lens suction jig mounting device, the optical axis of the front lens refracting surface and the rear lens refracting surface of the single-focus toric (aspheric) spectacle lens is shifted. When measuring the optical characteristics such as the axis or the refractive power, the optical axis or the refractive power cannot be obtained accurately due to the prism action of the lens.

  On the other hand, an eccentricity measuring device or the like is conventionally known, but when a suction jig such as a suction cup is attached to a toric (aspheric) spectacle lens with a single focus, a mark mark is attached with a lens meter. Even if the suction jig needs to be attached with the suction jig attachment device and the reference mark such as the mark mark is not attached to the single-focus toric (aspherical) spectacle lens, There has been a demand for a device for attaching a suction jig to a single-focus toric (aspheric) spectacle lens.

The present invention has been made in view of the above problems, and is a single-focus, toric (aspheric) spectacle lens, even when a reference mark such as a mark mark is not attached. Can be attached to a single-focus, toric (aspheric) spectacle lens, and an aspheric spectacle lens can be attached using a rough calculation method such as the optical axis or refractive power. It is an object of the present invention to provide an apparatus or a method for determining a suction jig mounting position.

  In order to solve the above-mentioned problems, a first aspect of the present invention is a mounting table for mounting an aspheric spectacle lens, a rotating means for rotating the aspheric spectacle lens mounted on the mounting table, and an optical element. Imaging optical means for capturing a lens image of the aspheric spectacle lens by means of, a characteristic measuring optical means for detecting optical characteristics of the aspheric spectacle lens, and the aspheric spectacle lens by the lens image captured by the imaging optical means The optical characteristic of the aspheric spectacle lens is detected using the characteristic measurement optical means, and the adsorption on the aspheric spectacle lens is detected based on the detected optical characteristic. An aspheric spectacle lens having arithmetic control means for specifying a mounting position of the jig and mounting means for mounting the suction jig at the mounting position on the aspheric spectacle lens specified by the arithmetic control means. The first optical axis coordinates of the aspheric spectacle lens measured by the characteristic measurement optical means and a predetermined angle rotated by the rotation means, and then measured by the characteristic measurement optical means A second optical axis coordinate of the aspherical spectacle lens is calculated, an intermediate coordinate between the first optical axis coordinate and the second optical axis coordinate is calculated, and the adsorption on the aspherical spectacle lens is performed based on the intermediate coordinate. An aspherical spectacle lens, comprising: an arithmetic unit that specifies a mounting position of a jig; and a mounting unit that controls the mounting unit to mount a suction jig at a mounting position on the aspherical spectacle lens. It is a suction jig mounting device.

  According to a second aspect of the present invention, in the suction jig mounting device for an aspherical spectacle lens according to the first aspect, the predetermined angle is 180 degrees.

  According to a third aspect of the present invention, there is provided a mounting table for mounting an aspheric spectacle lens, a rotating means for rotating the aspheric spectacle lens mounted on the mounting table, and a lens image of the aspheric spectacle lens by an optical element. Imaging optical means for picking up images, characteristic measuring optical means for detecting optical characteristics of the aspheric spectacle lens, and presence / absence of a reference mark attached to the aspheric spectacle lens by the lens image picked up by the imaging optical means And detecting the optical characteristic of the aspheric spectacle lens using the characteristic measuring optical means, and specifying the mounting position of the suction jig on the aspheric spectacle lens based on the detected optical characteristic An aspheric spectacle lens suction jig mounting device position having arithmetic control means and a mounting means for mounting the suction jig at a mounting position on the aspheric spectacle lens specified by the arithmetic control means. In the determination method, the first optical axis coordinate of the aspheric spectacle lens is measured by the characteristic measurement optical means, rotated by a predetermined angle by the rotation means, and then the first measurement of the aspheric spectacle lens by the characteristic measurement optical means. Measure the two optical axis coordinates, calculate the intermediate coordinates between the first optical axis coordinates and the second optical axis coordinates, and specify the attachment position of the suction jig in the aspheric spectacle lens based on the intermediate coordinates A method for determining a suction jig attachment position of an aspherical spectacle lens, wherein the attachment means is controlled to attach a suction jig to the attachment position on the aspherical spectacle lens.

  According to a fourth aspect of the present invention, in the method for determining the attachment position of the aspherical spectacle lens of the third aspect, the predetermined angle is 180 degrees.

  According to the present invention, even with a single-focus toric (aspheric) spectacle lens that is not attached with a reference mark such as a mark mark, the single-focus device can be used with a single focus. A suction jig can be attached to a toric (aspheric) spectacle lens.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Constitution]
FIG. 1 shows an appearance of a lens suction jig mounting apparatus 1 for automatically attaching a lens suction jig (suction jig) to a spectacle lens. In this example, the lens suction jig mounting device 1 includes a frame 2 as shown in FIG. 3 and an outer case 3 that covers the frame 2.

  As shown in FIGS. 3 and 4, the frame 2 is integrated with the bottom plate 4, side plates 5, 5 integrally provided at the center in the front-rear direction of the left and right side edges of the bottom plate 4, and the rear edge of the bottom plate 4. It has a rear wall 6 provided. Reference numeral 4 a shown in FIG. 5 is a base plate fixed on the bottom plate 4.

In addition, a bracket 7 is provided above the bottom plate 4 so as to protrude forward. As shown in FIG. 4, the bracket 7 is provided in a continuous manner between the triangular side plate portions 8 and 8 whose rear edge portions are attached to the side plates 5 and 5 and the front edge portions of the side plate portions 8 and 8. It has a plate part 9. The continuous plate portion 9 is inclined so as to go backward as it goes to the upper end.
An operation panel 10 and a liquid crystal display 11 are attached to the continuous plate portion 9.

<Operation panel 10>
As illustrated in FIG. 1A, the operation panel 10 includes an operation panel unit 10 a disposed on the right side of the liquid crystal display 11 and an operation panel unit 10 b disposed on the lower side of the liquid crystal display 11.

(Operation panel unit 10a)
The operation panel 10a includes a “stop” switch 12 for stopping the measurement, an “input switching / menu” switch 13 for switching the layout data input method, and a “memory” switch for calling the frame data stored in the memory. 14, a “data request” switch 15 for requesting frame data, an “− +” switch 16 for input setting, and a “▽” switch 17 for moving a cursor.
The menu screen can be displayed by holding down the “input switch / menu” switch 13 for a predetermined time (several seconds, for example, 2 seconds) or longer.

The “input switch / menu” switch 13 waits for a block instruction (suction instruction) and is used to instruct confirmation after manual positioning or position setting when pressed in a stopped state after measurement. It can be done.
When the “memory” switch 14 is pressed in the hidden mark observation mode, the screen of the liquid crystal display 11 is switched to the hidden mark storage screen.
The “data request” switch 15 is used to request transfer of target lens shape data (θi, ρi) from a frame shape measuring device (not shown) connected to the lens suction jig mounting device 1.
The “− +” switch 16 is used to increase / decrease the numerical data of the portion displayed on the liquid crystal display 11 and whose display color is highlighted by the “▽” switch 17. Further, the “− +” switch 16 is also used for switching the display magnification of the liquid crystal display 11 at the time of manual alignment.
The “▽” switch 17 is used to move the cursor of the data input unit displayed on the liquid crystal display 11. The cursor here refers to a portion of a plurality of data input frames (data input portions) displayed on the liquid crystal display 11, and one of the display colors is inverted or changed to another color, so that data input can be performed. A state that is possible.

(Operation panel unit 10b)
The operation panel 10b is provided with function keys F1 to F6 arranged along the lower edge of the liquid crystal display 11. In addition, the operation panel unit 10b is provided with a “left” switch 18L and a “right” switch 18R for specifying the processing for the right eye and the left eye of the spectacle lens, switching the display, and the like.

<Function keys F1 to F6>
The function keys F1 to F6 are used at the time of setting related to the processing of the eyeglass lens ML, and are used for responding to and selecting messages displayed on the liquid crystal display 11 in the processing process.
At the time of setting related to processing (layout screen), the function key F1 is used for lens type input (store area) and progressive lens manufacturer specification, the function key F2 is used for lens material input, and the function key F3 is The function key F4 is used for inputting a chamfering type, the function key F5 is used for inputting a mirror finish, and the function key F6 is used for selecting a course (mode).

・ Function key F1
As shown in FIG. 1B, the lens type input by the function key F1 includes “single focus”, “marking point”, “progressive”, “bifocal”, “hidden mark”, “automatic determination”, and the like. is there. In addition, there are manufacturers M1, M2, M3,... As the progressive lens manufacturers input with the function key F1.

・ Function key F2
As the lens material input by the function key F2, as shown in FIG. 1B, there are “plastic”, “high plastic”, “glass”, “acrylic”, “light control glass”, and the like. Here, “Pura” means plastic.

・ Function key F3
As shown in FIG. 1B, the types of spectacle frames input with the function key F3 are “metal”, “cell”, “optil”, “flat”, “grooving (thin)”, “grooving (middle) ) ”,“ Ditching (thick) ”, etc.
“Point: front bracket”, “point: rear bracket”, “point: composite bracket”, etc. can also be included.

・ Function key F4
As shown in Fig. 1B, the types of chamfering input with function key F4 are "None", "Small (front and back)", "Medium (front and back)", "Large (front and back)", "Special (front and back)" ”,“ Small (after) ”,“ Middle (after) ”,“ Large (after) ”,“ Special (after) ”, etc.

・ Function key F5
As the mirror finishing input with the function key F5, as shown in FIG. 1B, there are “none”, “present”, “mirror chamfer”, and the like.

・ Function key F6
The machining course input by the function key F6 includes “auto”, “trial”, “monitor”, “frame change”, “internal trace” and the like as shown in FIG. 1B.

<Layout screen>
Further, as the layout screen, for example, a “layout / suction” mode for displaying a layout screen for sucking a lens suction jig onto a spectacle lens as shown in FIG. 1C, or lens shape information (θi, ρi) There is a “layout” mode that shows the state when the lens suction jig is attracted to the spectacle lens hidden in the.

  When the “layout” mode is selected, a message display area E1, a numerical value display area E2, and a state display area E3 are displayed.

  Moreover, the outer case 3 has the front wall 19 as shown in FIG.1 and FIG.3. An inclined wall portion 19a inclined rearward is formed on the upper portion of the front wall 19, and a liquid crystal opening 20 is formed in the inclined wall portion 19a. The liquid crystal display 11 and the operation panel 10 are disposed in the liquid crystal opening 20 as shown in FIG. Furthermore, a table protrusion / disengagement opening 21 is formed in the lower part of the front wall 19, and a suction disk mounting opening 22 is formed in a portion of the front wall 19 from the right of the middle part in the vertical direction.

  Further, as shown in FIG. 2A, the entire detection optical system 100, the hidden mark detection optical system 200 (image imaging optical means), and a CL measurement device 300 for measuring the refraction characteristics (characteristic measurement) are included in the frame 2. Optical means).

<Whole detection optical system 100>
The entire detection optical system 100 includes an illumination optical system 101 and an entire observation optical system 102. The illumination optical system 101 includes optical members such as a light source 103 such as an infrared light emitting LED, a pinhole plate 104, a collimator lens 105, and a rotary reflection plate 106 in this order. The rotary reflector 106 is attached to a rotary shaft 107 a of a drive motor 107 and is driven to rotate by the drive motor 107.

  In the drive motor 107, the axis O1 of the rotation shaft 107a is inclined with respect to the optical axis O2 of the illumination optical system 101. Thereby, the rotary reflecting plate 106 is slightly tilted by a predetermined angle α with respect to the optical axis O1 oriented in the vertical direction. The predetermined angle α is several degrees (for example, 2 ° to 4 °).

  Further, as shown in FIG. 2B, the rotary reflecting plate 106 includes a rotating disc 106a made of a metal plate or a resin plate, and a reflecting sheet 106b attached to the upper surface of the rotating disc 106a. In this reflection sheet 106b, a large number of very small corner cubes 108 are vertically and horizontally arranged on the entire surface and are integrally formed of resin.

  With such a configuration, the incident light beam 109 incident on the corner cube 108 is reflected in the corner cube 108, and then becomes an output light beam 110 that exits from the corner cube 108 and returns in parallel along the incident light beam 109. . However, the reflected light beam 111 reflected from the surface of the reflection sheet 106 b is reflected at a certain angle with respect to the incident light beam 109 because the rotary reflecting plate 106 is slightly inclined by the predetermined angle α. For this reason, the reflected light beam 111 does not return parallel to the incident light beam 109 unlike the emitted light beam 110, and there is no adverse effect on the overall observation and detection of the hidden mark.

  The overall observation optical system 102 includes optical members such as a collimator lens 105, a half mirror 112, a diaphragm plate 113, an imaging lens 114, and a CCD (two-dimensional light receiving element, area sensor) 115 in this order.

<Hidden mark detection optical system 200>
The hidden mark detection optical system 200 includes the illumination optical system 101 and the hidden mark observation optical system 201 described above.
The hidden mark observation optical system 201 includes optical members such as a collimator lens 105, a half mirror 202, a diaphragm plate 203, an imaging lens 204, and a CCD (two-dimensional light receiving element, area sensor) 205 in this order.
Of the entire detection optical system 100 and the hidden mark detection optical system 200, the optical members other than the rotating reflector 107 are accommodated in the optical member accommodation case 23 shown in FIG. The optical member storage case 23 is fixed to the frame 2 with a bracket (not shown).

(Other arrangement examples of the entire observation optical system)
The overall observation optical system 102 can also be configured as shown in FIG. 2A. That is, the half mirror 112 of FIG. 2 is disposed between the half mirror 202 and the diaphragm plate 203, the reflected light beam reflected by the half mirror 202 is reflected by the half mirror 112, and this reflected light beam is reflected by the diaphragm plates 113, The light may be guided to a CCD (two-dimensional light receiving element, area sensor) 115 via the imaging lens 114.

<CL measuring device 300>
The CL measuring apparatus 300 is positioned on the back side (rear wall 6 side) of the frame 2 and is fixed on the base plate 4a, and has a bracket 301 as shown in FIG. The bracket 301 has an upper casing 302 and a lower casing 303. The upper casing 302 is provided with the measurement light beam projection system 304 shown in FIG. 2, and the lower casing 303 has the configuration shown in FIG. A light receiving optical system 305 is provided. A conical cylindrical lens receiver 306 is fixed on the lower housing 303.
The measurement light beam projection system 304 includes optical members such as a light source 307, a pinhole 308, a reflection mirror 309, and a collimator lens 310 in this order. The light receiving optical system 305 includes optical members such as a pattern plate 311, an imaging lens 312, and a CCD (two-dimensional light receiving element, area sensor) 313 in this order.

<Lid mounting structure>
An L-shaped bracket 24 is fixed on the front end portion (end portion on the front wall 19 side) of the base plate 4a as shown in FIGS. An opening 25 is formed in the upright plate portion 24a of the bracket 24, and flanges 24b and 24b are integrally formed in the side portion of the upright plate portion 24a as shown in FIGS.

  The opening 25 is closed with a lid 26. A hinge bracket 27 shown in FIGS. 9 and 11 is fixed to one lower end portion of the inner surface of the lid 26. As shown in FIG. 11, the bracket 27 includes a curved portion 27a that curves in a circular arc toward the rear and lower side, a straight plate portion 27b that linearly extends from the lower rear end of the curved portion 27a toward the lid 26, and a straight plate portion. 27b has a stopper plate portion 27c provided continuously downward at a right angle (perpendicular) to 27b.

On the other hand, in the vicinity of both side portions of the inner surface of the upright plate portion 24a, bearing members 28, 28 positioned below the opening 25 are integrally provided as shown in FIG.
In the bracket 24, a corner portion 27 d between the straight plate portion 27 b and the stopper plate portion 27 c is rotatably held by the bearing members 28 and 28 via the support shaft 29. Further, the bracket 27 is urged to rotate counterclockwise in FIG. 10 by a twisted coil spring 30 wound around the support shaft 29 and interposed between the bracket 27 and the upright plate portion 24a.

  As a result, the lid 26 contacts the front surface of the upright plate portion 24a to close the opening 25. In this state, the lid 26 closes the table retracting opening 21 of the outer case 3.

<Lens clamp release arm>
Further, on one side of the base plate 4a, an arm 31 used for releasing the lens clamping is fixed in the vicinity of the lid 26 as shown in FIG. As shown in FIGS. 6 and 9, the arm 31 includes a standing portion 31a, a horizontal portion 31b extending from the upper end of the standing portion 31a along the lid 26, and a plate portion extending from the tip of the horizontal portion 31b to the lid 26 side. 31c and the latching claw part 31d extended below from the front-end | tip of the board part 31c.

<Lens holding means moving mechanism>
A lens holding means moving mechanism 32 is disposed on the base plate 4a. The lens holding mechanism 32 includes a lateral guide rail (X direction guide rail) 33 positioned near the rear end of the base plate 4a and the arm 31 as shown in FIGS. 8, 10, and 11, and a lateral guide. A lateral movement member (X direction movement member) 34 disposed on the rail 33 and a bearing 35 that supports the lateral movement member 34 on the lateral guide rail 33 so as to be movable in the lateral direction (X direction). Further, the drive motor 107 described above is attached to the lateral movement member 34.

  Further, as shown in FIG. 12, the lens holding means moving mechanism 32 is fixed to the front and rear guide rails 36 fixed on both sides of the lateral movement member 34 in the front-rear direction (direction perpendicular to the paper surface of FIG. 12, Y direction). And a plate-like front and rear moving member (front and rear moving stage, Y direction moving member) 37 disposed on the guide rail 36, and a bearing 38 that instructs the guide rail 36 to move back and forth freely. Have. The drive motor 107 described above is attached to the laterally moving member 34.

Further, as shown in FIG. 8, a nut member 39 is fixed to the lateral movement member 34, and a lateral feed screw (X feed screw) 40 whose axis is directed in the lateral direction is screwed to the nut member 39. The lateral feed screw 40 is rotationally driven by a pulse motor (X drive motor) 41 fixed on the base plate 4a. A circular light transmission hole 42 is formed in the front-rear moving member 37 so as to face the rotary reflecting plate 106 attached to the drive motor 107.
Further, as shown in FIG. 10, a nut member 43 is fixed to the front / rear moving member 37 via a bracket 37a and a fixing screw 37b, and the nut member 43 has a front / rear feed screw (Y feed screw) whose axis is directed in the front / rear direction. 44) is screwed. The front / rear feed screw 44 is rotationally driven by a pulse motor (Y drive motor) 45 fixed on the lateral movement member 34.

<Lens holding means>
A lens holder (lens holding means) 46 is disposed on the light transmission hole 42 of the front-rear moving member 37 as shown in FIGS.
The lens holder 46 has a ring-shaped gear 47 provided with a support flange 47a at the lower part of the inner peripheral surface as shown in FIG. The ring-shaped gear 47 has a gear portion 47b and an annular groove 47c extending in the circumferential direction on the peripheral surface. The annular groove 47c is engaged with a plurality of rollers 37R that are rotatably mounted on the longitudinally moving member 37 as shown in FIG. The plurality of rollers 37 </ b> R are disposed along the light transmission hole 42, and hold the ring-shaped gear 47 on the front and rear moving member 37 so as to be rotatable.

The lens holder 46 is fitted in the ring-shaped gear 47 and is detachably supported on the support flange 47a. The lens holder 46 is spaced from the transparent disc 48 at a 120 ° interval. And has an axial lens receiver 49 projecting therefrom. The transparent disk 48 may be glass or plastic.
Further, on the ring-shaped gear 47, as shown in FIG. 13A, six small gears 50 arranged at equal pitches (60 ° intervals) in the circumferential direction are rotatably mounted. A timing belt 51 is stretched around the gear 50. In addition, a tension roller 52 rotatably attached to the ring gear 47 is brought into contact with the outer peripheral surface of the timing belt 51.

Furthermore, one end portion (base end portion) of each arm 53 is fixed to every other small gear 50, and a lens holding shaft (lens holding member) extending vertically on the other end portion (tip end portion) of each arm 53. ) 54 is attached.
Moreover, a spring receiving pin 55 is attached on the ring-shaped gear 47 so as to be close to one end of the arm 53, and a coil spring 56 is interposed between the spring receiving pin 55 and one end of the arm 53. Yes. The coil spring 56 urges the arm 53 so that the tip of the arm 53 rotates toward the center of the ring gear 47.

  One end portions of the small gear 50 and the arm 53 configured as described above are covered with a cover ring 57 as shown in FIGS. The cover ring 57 is fixed to the ring-shaped gear 47 with screws 58. Further, engagement notches 59 for engaging the lens holding shaft 54 are formed on the inner peripheral surface of the cover ring 57 at intervals of 120 ° in the circumferential direction. Further, a cutout 60 is formed on the outer peripheral surface of the cover ring 57.

In addition, an engagement protrusion 53 a that protrudes upward from the notch 60 is formed at one end of each of the three arms 53.
Further, a mounting angle setting motor 61 composed of a pulse motor or the like is fixed to the longitudinal movement member 37, and a gear 62 is mounted on an output shaft 61 a of the mounting angle setting motor 61. The gear 62 is engaged with the gear portion 47 b of the ring-shaped gear 47. Therefore, the ring-shaped gear 47 is rotated by rotationally driving the gear 62 by the mounting angle setting motor 61.
Moreover, the front / rear moving member 37 is covered with the stage cover SC except for the lens holder 46.

<Frame changing lens holder>
Further, in place of the lens supporting transparent disc 48 having the lens receiver 49 described above, the frame replacement lens holder 63 shown in FIG. 14 can be detachably attached to the ring gear 47 as shown in FIG.

  The frame replacement lens holder 63 has a ring-shaped frame 64 having the same outer diameter as that of the transparent disk 48, a transparent disk 64 a fixed in the ring-shaped frame 64, and an equal pitch on the ring-shaped frame 64 ( Three (several) support shafts 65 projecting at intervals of 120 °, a lens holding arm (lens holding member) 66 having one end portion (base end portion) rotatably attached to the support shaft 65, and A coil spring 67 is provided that urges the other end (tip) of the lens holding arm 66 to rotate toward the center of the ring-shaped frame 64. The lens holding arm 66 is formed in a tapered shape toward the tip.

Such a ring-shaped frame 64 is formed thicker than the above-described transparent disk 64a, and the lens holding shaft 54 of the above-mentioned arm 53 is compared with the ring-shaped gear 47 as shown in FIG. The ring-shaped gear 47 is detachably fitted. As a result, the lens holding shaft 54 hits the outer peripheral surface of the ring-shaped frame 64 and does not move into the ring-shaped frame 64. Also at this time, the ring-shaped frame 64 is supported on the flange 47a of the ring-shaped gear 47 of FIG.
Reference numeral 64 b denotes a through hole provided in the ring-shaped frame 64 for frame replacement, and is used for detection of the frame replacement lens holder 63.

<Lens adsorption mechanism>
As shown in FIGS. 5 and 6, a lens suction mechanism (jig mounting means) 68 is mounted on the side plate 5 of the frame 2.
The lens suction mechanism 68 has a bracket 69 as shown in FIGS. 5, 16, 18, and 19. As shown in FIGS. 16, 18 and 19, the bracket 69 is connected to an upper support plate portion 69a, a lower support plate portion 69b, and a vertical plate portion 69c connecting the support plate portions 69a and 69b. It is formed in a letter shape. Further, mounting pieces 69d and 69d are provided integrally and at right angles on the upper and lower portions of one side of the vertical plate portion 69c. By attaching the attachment pieces 69d, 69d to the side plate 5 provided on the frame 2 in FIGS. 5 and 6 with screws (not shown), the bracket 69 is attached with the vertical plate portion 69c being perpendicular to the side plate 5.

  The lens suction mechanism 68 is fixed to the lower portion of the front surface of the vertical plate portion 69c toward the front side, and the upper and lower ends of the support plate portions 69a and 69b are fixed by fixing means such as screws (not shown). As shown in FIG. 17, a cam cylinder 71 and a female screw cylinder 72 are fitted in the cam cylinder 71 so as to be rotatable and movable up and down (movable up and down). The lower end portion of the female screw cylinder 72 penetrates the lower support plate portion 69b and protrudes downward.

Further, the cam cylinder 71 is formed with a cam slit (guide slit) 73 extending vertically as shown in FIGS. 5, 16, and 17. The cam slit 73 includes an upper vertical slit portion 73a shown in FIG. 17, a helical slit portion 73b formed in a spiral shape from the lower end of the upper vertical slit portion 73a downward by 90 °, and the helical slit. The lower vertical slit portion 73c is formed to be linearly long from the lower end of the portion 73b to the lower portion of the cam cylinder 71.
A guide roller 74 is rotatably held near the upper end portion of the outer peripheral surface of the female screw cylinder 72 as shown in FIG. 17, and the guide roller 74 is disposed in the cam slit 73.

  Further, a male screw shaft (screw shaft) 75 extending through the upper support plate portion 69a to the lower support plate portion 69b side is rotatably attached to the female screw cylinder 72. The male screw shaft 75 is held on the upper support plate 69a so as to be rotatable and immovable in the axial direction (vertical direction).

  A pulley 76 is fixed to the upper end portion of the male screw shaft 75. A drive motor 77 is attached to the lower surface of the upper support plate portion 69a. An output shaft 77a of the drive motor 77 protrudes upward through the upper support plate portion 69a, and a pulley 78 is fixed to the output shaft 77a. In addition, a timing belt 79 is stretched around the pulleys 76 and 78.

  Furthermore, a movable arm 80 extending horizontally is fixed to the lower end portion of the male screw cylinder 75. The movable arm 80 faces the front when the guide roller 74 is in the upper vertical slit portion 74 a of the cam slit 73, and when the guide roller 74 is in the lower vertical slit portion 74 c of the cam slit 73. It is oriented in the horizontal direction (X direction) and to the left in FIG.

  As shown in FIGS. 16, 18, and 19, a movable bracket (movable member) 82 rotates at a distal end portion of the movable arm 80 via a support shaft 81 that extends vertically and horizontally to the extending direction of the movable arm 80. It is held freely. Between the movable bracket 82 and the movable arm 80, a torsion coil spring 83 wound around a support shaft 81 is interposed as shown in FIGS. The torsion coil spring 83 urges the movable bracket 82 to be folded in a direction in which the movable bracket 82 is folded to the lower surface side of the distal end portion of the movable arm 80 as shown in FIG.

  A roller 84 is rotatably held on the side surface of the base end portion of the movable bracket 82. The roller 84 abuts against a horizontal plate portion (stopper plate portion) 70 a provided at the lower end of the fixed arm 70 when the movable arm 80 is raised with the front side facing, and twists the movable bracket 82 to a coil spring. It is made to rotate to a vertical state as shown in FIG.

(Suction jig holding means)
Further, a suction jig holding means 85 is attached to the movable bracket 82.
22A and 23, the suction jig holding means 85 includes a holder main body 86 in which the cylindrical portion 86a is inserted into the through hole 82a of the bracket 82 and a flange 86b of the holder main body 86. Screws 87, 87 fixed to the opposing pieces 82b, 82b. The holder main body 86 is provided with a cylindrical portion 86a protruding from the through hole 82a, and an outer cylinder 88 is fitted to the outer periphery of the cylindrical portion 86a so as to be movable in the longitudinal direction.

  The outer cylinder 88 is formed with slits 88a as shown in FIGS. 22B and 22C at an interval of 180 °. One end of each slit 88a is held by the holder body 86. Bent portions 89a and 89a at the other end of the linear springs 89 and 89 are provided. The bent portion 89a is provided with a linear portion 89b in which a part of the peripheral surface is projected from the slit 88a into the outer cylinder 88 as shown in FIGS. 22 (b) and 22 (c).

  Further, a coil spring 90 is interposed between the holder main body 86 and the outer cylinder 88, and the outer cylinder 88 is spring-biased to the left in FIG. A spring support shaft 91 having one end fixed to the end wall 86c of the cylinder portion 86a is disposed concentrically within the cylinder portion 86a of the holder body 86.

  Further, a bottomed cylindrical slide cylinder 92 is fitted into the cylinder portion 86a so as to be movable in the axial direction, and the spring support shaft 91 is inserted into the slide cylinder 92 with play. One end of the coil spring 93 is inserted and frictionally held in the slide cylinder 92. A spring support shaft 91 is inserted into the coil spring 93, and the other end of the coil spring 93 is held by an interference fit on the end of the spring support shaft 91 on the end wall 86c side.

  Further, as shown in FIGS. 22A (a) and 22 (b), the cylindrical portion 86a of the holder body 86 is formed with notch guides 86d and 86d extending in a slit shape opened at the lower end with an interval of 180 °. Yes. Further, as shown in FIGS. 22B and 22A (c), the outer cylinder 88 is formed with a slit-shaped notch guide 88b that opens to the upper end.

  The notch guides 86d and 88b are made to coincide with each other as shown in FIG. 22 and FIG. 22A (d). And the guide shaft 94 attached to the outer peripheral surface of the slide cylinder 92 as shown in FIGS. 21 and 22A is inserted into the notch guides 86d and 88b. Further, as shown in FIG. 24, a positioning pin 95 projects from the end wall 92a of the slide cylinder 92. A tapered recess 88 c is formed at the outer end of the outer cylinder 88.

  24 and 30, a hook support shaft 96 is screwed and fixed to the flange 86b of the holder body 86, and a spring receiving screw 97 is screwed adjacent to the hook support shaft 96. ing. Reference numeral 96 a denotes a flange of the hook support shaft 96.

  As shown in FIG. 3, the hook support shaft 96 is inserted into the shaft insertion hole 98a of the plate-like locking hook 98 with play, and supports the locking hook 98 on the flange 86b. A spring locking projection 98b is formed on one side of the locking hook 98, and a slit 98c is formed in the locking projection 98.

  Then, both end portions of the coil spring 99 fitted to the outer periphery of the hook support shaft 96 are locked in the spring receiving screw 97 and the slit 98c. The coil spring 99 urges the locking hook 98 to rotate counterclockwise in FIG. 24, and is interposed between the flanges 86b and 96a to press the locking hook 98 against the flange 86b with a light force. Yes.

  The locking hook 98 is formed with a locking notch 98d as shown in FIGS. 24 to 26, and is positioned at the edge of the locking notch 98d opposite to the rotational biasing direction. An inclined guide piece 98e is formed. A small-diameter shaft portion 94a at the tip of the guide shaft 94 attached to the outer peripheral surface of the slide cylinder 92 is inserted into the locking notch 98d.

  In FIG. 1, 120 is a lens suction jig. As shown in FIG. 21, the lens suction jig 120 includes a mounting shaft portion 121 and a cup portion 122 made of an elastic member such as rubber or soft synthetic resin provided integrally with the mounting shaft portion 121. A positioning groove 123 is formed in the mounting shaft 121 so as to open to the end surface and the peripheral surface. The mounting shaft 121 is fitted into the outer cylinder 88.

<Control circuit>
The liquid crystal display 11 described above is controlled by an arithmetic control circuit 130 shown in FIG.
The arithmetic control circuit 130 controls the operation of the pulse motor (X drive motor) 41, the pulse motor (Y drive motor) 45, the mounting angle setting motor 61, the light source 103, the drive motor 107, and the light source 307. Yes.
The switch operation signal from the operation panel 110 and the image signals (measurement signals) from the CCDs 115, 205, and 313 are input to the arithmetic control circuit 130.

[Action]
Next, the operation of the lens suction device having such a configuration will be described.
(1) Attaching the Lens Suction Jig 120 to the Lens Suction Mechanism 68 FIG. 1 shows a state before detection of a hidden mark of a spectacle lens and refraction measurement of a spectacle lens. In this state, as shown in FIG. 17, the guide roller 74 of the lens suction mechanism 68 is located in the upper end portion of the upper vertical slit portion 73a of the cam slit 73 provided in the cam tube 71, and the female screw tube 72 is raised most. In the position.

  At this position, the movable arm 80 attached to the lower end of the female screw cylinder 72 is positioned at the highest position as shown in FIGS. 5 and 16, and the roller 84 of the movable bracket 82 is shown in FIG. Thus, the movable bracket 80 is brought into a state of being directed downward as shown in FIG. 16 against the spring force of the torsion coil spring 83 shown in FIG. .

  In this state, the movable bracket 80 is in a state of facing the suction plate mounting opening 22 as shown in FIG. Therefore, the operator inserts the mounting shaft portion 121 of the lens suction jig 120 into the outer cylinder 88 provided on the movable bracket 80 as shown in FIGS. 21 and 22 from the suction disk mounting opening 22. At this time, the positioning pin 95 is inserted into the positioning groove 123 provided in the mounting shaft portion 121.

When the mounting shaft 121 is pushed in, the slide cylinder 92 is moved toward the end wall 86 c of the holder body 86 against the spring force of the coil spring 93 by the mounting shaft 121.
Thereafter, when the mounting shaft 121 of the lens suction jig 120 is further pushed into the outer cylinder 88 so as to get over the linear portion 89b of the linear spring 89, the mounting shaft 121 pulls the linear portion 89b of the linear spring 89 into a line. The spring 89 is pushed into the slit 88 a of the outer cylinder 88 against the spring force of the bent portion 89 a of the cylindrical spring 89. In this state, the linear portion 89b is in pressure contact with the outer peripheral surface of the mounting shaft 121 as shown in FIG. 23 by the spring force of the bent portion 89a, and the mounting shaft 121 is held in the outer cylinder 88. Therefore, even if the outer cylinder 88 faces downward, the lens suction jig 120 does not fall downward.
In this state, the small-diameter shaft portion 94 a of the guide shaft 94 is positioned in the locking notch 98 d of the locking hook 98.

(2) Holding the spectacle lens to the lens holder 46 (exposing the lens holder 46 to the outside of the outer case 3 and placing the lens)
Next, when the automatic discrimination in FIG. 1B is selected by operating the function key F1 on the operation panel 10, and either the “left” switch 18L or the “right” switch 18R in FIG. 1A is selected, the pulse motor 45 calculates. The operation is controlled by the control circuit 130, the forward / backward feed screw 44 is rotated forward, and the nut member 43 and the forward / backward moving member 37 are moved to the lid 26 side.

  Along with this movement, the stage cover SC covering the longitudinally moving member 37 abuts against the lid 26, and then twists the lid 26 against the spring force of the coil spring 30 in the clockwise direction in FIG. The lens holder 46 attached to the front / rear moving member 37 is exposed through the openings 25 and 21 and out of the outer case 3.

  At this time, the engaging projection 53a of the lens holder 46 is engaged with the engaging claw portion 31d of the arm 31, and the arm 53 integral with the engaging projection 53a is a spring force of the coil spring 56 in FIG. The lens holding shaft 54 of the arm 53 integral with the engagement protrusion 53a moves to the notch 60 side of the cover ring 57 in FIG.

  Accordingly, the timing belt 51 in FIG. 13A is rotated in the clockwise direction, and the remaining two small gears 50 are also rotated in the clockwise direction by the timing belt 52. The arm 53 integrated with the two small gears 50 is rotated clockwise against the spring force of the coil spring 56, and the remaining two small gears 50 and the lens holding shaft 54 of the arm 53 are shown in FIG. The cover ring 57 moves to the notch 60 side.

With the three lens holding shafts 54 thus moved to the cover ring 57 side and opened, the spectacle lens ML is placed on the shaft-shaped lens receiver 49 of the lens holder 46 as shown in FIG. Place.
(Moving the lens holder 46 into the outer case 3 and holding the lens)
Thereafter, the arithmetic control circuit 130 controls the operation of the pulse motor 45 to reversely move the front / rear feed screw 44 and move the nut member 43 and the front / rear moving member 37 into the outer case 3.

Accordingly, when the stage cover SC covering the longitudinally moving member 37 is separated from the lid 26, the lid 26 is swung counterclockwise in FIG. 10 about the support shaft 29 by the spring force of the twist coil spring 30. The openings 25 and 21 are closed by the lid 26.
At this time, when the engaging projection 53 a of the lens holder 46 is separated from the locking claw portion 31 d of the arm 31, the arm 53 integrated with the engaging projection 53 a is caused by the spring force of the coil spring 56 in FIG. The lens holding shaft 54 of the arm 53 integrated with the engagement protrusion 53a moves to the center side of the cover ring 57 in FIG.

  Along with this, the timing belt 51 in FIG. 13A is rotated counterclockwise, and the remaining two small gears 50 are also rotated counterclockwise by the timing belt 52. The arm 53 integral with the two small gears 50 is rotated counterclockwise by the spring force of the coil spring 56, and the lens holding shaft 54 of the arm 53 integral with the remaining two small gears 50 is shown in FIG. It moves to the center side of the cover ring 57.

  In this way, the three lens holding shafts 54 are moved to the center side of the cover ring 57 and come into contact with the peripheral surface of the spectacle lens ML placed on the shaft-shaped lens receiver 49 of the lens holder 46, thereby The lens ML is clamped (held) by three lens holding shafts 54 as shown in FIG.

(3) Determination of the type of the spectacle lens ML In this way, the arithmetic control circuit 130 detects that the lens holder 46 and the rotary reflector 106 are entirely detected while the spectacle lens ML is held (held) by the three lens holding shafts 54. When it is moved between the optical system 100 and the illumination optical system 101 of the hidden mark detection optical system 200, the operation of the pulse motor 45 is stopped.

  Thereafter, the arithmetic control circuit 130 turns on the light source 103 to emit infrared light from the light source 103, and drives and controls the drive motor 34 to rotate the rotary reflector 106.

  The infrared light from the light source 3 passes through the pinhole plate 104 and the half mirrors 112 and 202, enters the collimator lens 105, is converted into a parallel light beam by the collimator lens 105, and is then a spectacle lens as a test lens. Projected to ML.

  The infrared light transmitted through the spectacle lens ML by this projection is reflected by the rotary reflecting plate 106 and becomes reflected light. Part of this reflected light is transmitted through the spectacle lens ML and the half mirror 202, and then reflected by the half mirror 112, and the image of the spectacle lens ML and the axial shape are reflected on the CCD 115 via the diaphragm plate 113 and the imaging lens 114. An image of the lens receiver 49 is formed. If the eyeglass lens ML has a reference mark such as a hidden mark or a mark, these are also imaged on the CCD 115. The image signal from the CCD 115 is input to the arithmetic control circuit 130. The arithmetic control circuit 130 receives the image signal from the CCD 115 and determines the presence / absence of a reference mark attached to the spectacle lens based on the image data of the spectacle lens ML.

FIG. 32 is a view showing a reference mark attached to the progressive multifocal lens, and FIG. 33 is a view showing a reference mark attached to the bifocal lens.
As shown in FIG. 32, the progressive multifocal lens is provided with hidden marks 151A and 151B at two locations that are equidistant (for example, 17 mm) from the geometric center O on the horizontal paint 150. The lens is designed so that the geometric center O of the lens, the distance power measurement portion 153, the optical center of the near power measurement portion 154, the position of the eye point 155, and the like can be derived from the positions 151A and 151B.

  The hidden marks 151A and 151B are displayed with the same small circles or small circles and characters, and the addition power of the lens (the outer vertex refractive power of the distance portion and the outer vertex refractive power of the near portion are displayed under the hidden mark 151A. A number 156 indicating the difference in force is shown. The hidden marks 151A and 151B and the numeral 156 indicating the addition power are formed on the convex surface of the lens so as to form a minute protrusion (about 2 to 4 μm) at the time of molding.

  The position of the eye point 155 varies depending on the lens design, but is determined to be a predetermined reference position apart from the geometric center O, for example, a position above the geometric center O by a predetermined distance d1 (for example, 2 mm). Yes. Therefore, the geometric center O and the eye point 155 can be obtained by capturing the images of the hidden marks 151A and 151B, performing image processing, and calculating the position coordinates.

  As shown in FIG. 33, the multifocal lens has a ball 160A and a small ball (segment) 160B. The geometrical center O, the optical center 162 of the near power measuring portion, with the upper edge 161 of the small ball 160B as a reference mark, It is designed so that the position of the eye point 163 can be obtained. As for the position of the geometric center O and the eye point 163, an image of the small ball 160B is taken, and the position coordinates of the center of the upper edge 161 are calculated by image processing.

  In addition, there are two types of single lenses: those with mark points and those without mark points. As shown in FIG. 33, the arithmetic control circuit 130 acquires an entire image of the spectacle lens ML based on the image signal received from the CCD 115 (step S1). After changing the luminance of the image, the arithmetic control circuit 130 applies a LOG (Laplacian Of Gaussian) filter to extract the outer diameter, horizontal paint, segment contour, etc. of the spectacle lens ML, and obtains the image obtained by the filter processing. Is binarized based on the luminance value (step S2). As a result of this binarization processing, a lot of noise other than the lens outer diameter and the reference mark is generated in the image processing. Therefore, the arithmetic control circuit 130 performs labeling processing to remove this noise, and erases minute noise. Perform (step S3). Here, labeling is a known process in which connected pixels are distinguished by attaching the same label number. The arithmetic and control circuit 130 determines that the image with the smallest total number among the images with the same label number is noise and removes it from the image.

  Thereafter, the arithmetic control circuit 130 determines whether or not a small ball is detected from the obtained image (step S4), and if a small ball is detected, the spectacle lens ML is a bifocal lens. to decide. If no small balls are detected, the arithmetic control circuit 130 determines whether horizontal paint is detected from the obtained image (step S5). When horizontal paint is detected, the arithmetic control circuit 130 determines that the spectacle lens ML is a progressive multifocal lens. Further, when the horizontal paint is not detected, the arithmetic control circuit 130 determines whether or not a mark is detected from the obtained image (step S6). When the mark point is detected, the arithmetic control circuit 130 determines that the spectacle lens ML is a single lens with a mark point (lens with a mark point), and when the mark point is not detected, the spectacle lens ML is determined. Is a single lens (unmarked lens) without a reference mark.

  In this way, the arithmetic control circuit 130 detects the reference mark such as the hidden mark, the horizontal paint, the mark, etc., determines the lens type based on the presence or absence of the reference mark, and sucks the suction jig based on the reference mark. Perform position detection. On the other hand, when the reference mark is not detected, the arithmetic control circuit 130 detects the refraction characteristic (optical characteristic) of the spectacle lens by using the CL measuring device 300 described below, and detects the suction position of the suction jig. .

(4) Measurement by CL measuring apparatus 300 After confirming the presence or absence of the spectacle lens ML, the arithmetic control circuit 130 controls the operation of the pulse motor 45 when it is confirmed that the spectacle lens ML has no hidden mark, small ball or mark mark. Then, the front / rear feed screw 44 is reversed, the nut member 43 and the front / rear moving member 37 are moved to the CL measuring device 300 side, and the spectacle lens ML is measured with the measuring beam projection optical system 304 and the light receiving optical system 305 of the CL measuring device 300. And the pulse motor 45 is stopped.

Thereafter, the arithmetic control circuit 130 turns on the light source 307 to emit a measurement light beam. The measurement light beam from the light source 307 is guided to the collimator lens 310 through the pinhole plate 308 and the reflection mirror 309, and is projected as a parallel light beam from the collimator lens 310 onto the spectacle lens ML.
The measurement light beam transmitted through the spectacle lens ML is transmitted through the pattern plate 311, and the pattern of the putter plate 311 is imaged on the CCD 313 via the imaging lens 112. A measurement signal (image signal) is input from the CCD 313 to the arithmetic control circuit 130. Based on the measurement signal from the CCD 313, the arithmetic control circuit 130 measures the spherical power S, the cylindrical power C, the axial angle A of the cylindrical shaft, the optical center OC, and the like, which are the refractive characteristics of the spectacle lens ML.

  When the measurement of the refractive characteristics of the spectacle lens ML is completed, the arithmetic control circuit 130 controls the operation of the pulse motor 45 to rotate the forward / backward feed screw 44 in the forward direction so that the nut member 43 and the forward / backward moving member 37 are moved to the lid 26 side. The lens holder 46 and the spectacle lens ML are moved between the rotary reflector 106 and the entire detection optical system 100 and the illumination optical system 101 of the hidden mark detection optical system 200, and the operation of the pulse motor 45 is stopped. .

  Next, processing in the case of a single focal toric (aspheric) spectacle lens will be described. The block accuracy in the single focus mode has a larger variation than the block accuracy in the mark mode. As a result, astigmatism lenses may be tilted depending on the position of the lens, resulting in errors in measurement results. Therefore, correction is performed by performing the following processing.

  In the apparatus according to this example, since the tilt of the lens is not known, the first measurement of the spectacle lens ML is performed and then rotated 180 degrees, and the second measurement is performed. Change the measurement operation to detect the position.

  This will be described below with reference to FIGS. In this example, the presence / absence of data measurement of the 180 ° rotation position is determined based on the first measurement result (SA1). If there is data measurement at the 180 ° rotation position, block points are calculated from the data at two locations (SA3 to SA12). When there is no data measurement at the 180-degree rotation position, the location (block point) where the suction jig is attached is calculated with one data as before.

  This will be described below with reference to FIG. First, the optical center is detected and the axes are aligned. At this time, the S / C / A value is recorded (SA1). This is the first measurement. Next, the presence / absence of the eyeglass lens ML to be measured for the second time is confirmed (SA2), and if there is no target, the processing routine is shifted to a conventional processing routine (SA21).

  Next, the shift amount from the first measurement position of CL to the optical center is recorded (SA3). Then, the spectacle lens ML is rotated by 180 ° as it is (SA4), the optical center is detected, and the axis is aligned (SA5). At this time, the S / C / A value is recorded. Next, the amount of deviation from the CL measurement start position to the optical center is recorded (SA6). This is the second measurement.

  At this stage, when the influence of the prism phenomenon of the spectacle lens ML is corrected (prism prescription), the process proceeds. When prism prescription is not performed, the whole block is moved to the whole observation system based on the corrected block point. At the time of this movement, the above-described operation for returning the 180 ° rotation and the X / Y movement are performed simultaneously to shorten the processing time. At this time, it is necessary to consider the shift amount between the CL portion and the entire observation system (SA31). The average value of S / C / A for the first and second sheets is calculated and used for display (SA32).

  When performing the prism prescription, the spectacle lens ML is rotated by 180 °, and the portion in the prism state is detected (SA9). Then, the position shifted by the correction amount recorded in SA7 with the prosm detection position as a reference is recorded as a suction jig attachment location (block point).

  Then, using the corrected block point as a reference, the shift is made to the overall observation system in consideration of the shift amount between the CL portion and the overall observation system (SA12), and the S / C / A acquired in SA9 is used for display of the apparatus. .

In the above processing, the correction position is processed by the following calculation.
Hereinafter, a description will be given with reference to FIG. First, the first optical center detection position O1 (x1, y1) and the second optical center detection position 02 (x2, y2) are obtained. Then, the second optical center position is rotated by 180 ° around the CL measurement start position (0, 0), and O2 ′ (−x2, −y2) is obtained. The midpoint of the line segment connecting the corrected optical center position 02 ′ and the first optical center position O is the corrected optical center position Ob.

That is, the X / Y corrected position can be calculated based on the following equation. At this time, the CL measurement start position is (0, 0) on the coordinates.
X position after correction = (first optical center detection X position−second optical center detection X position) / 2
Y position after correction = (first optical center detection Y position−second optical center detection Y position) / 2

The calculation of the correction amount of the post-correction position of the suction jig suction position is based on the following formula.
X correction amount = first optical center detection X position−corrected X position Y correction amount = first optical center detection Y position−corrected Y position

  As a result, even if a single-focus toric (aspheric) spectacle lens is not attached with a reference mark such as a mark mark, the attachment position of the suction jig is corrected and specified, and the suction is accurately performed. Work can be performed.

In the above example, the spectacle lens ML is rotated 180 ° and the second measurement is performed. However, this rotation angle may be arbitrary, and the correction amount is obtained by inserting the rotation angle in correction. It may be. That is, a rough calculation method for obtaining the optical axis or the refractive power can be taken in, and a suction position can be quickly identified in a toric (aspheric) spectacle lens with a single focus lens, so that the suction work can be performed efficiently.

(5) Attaching the Lens Adsorption Jig 120 to the Eyeglass Lens ML As described above, the arithmetic control circuit 130 detects the presence / absence of the eyeglass lens ML, the type of the eyeglass lens ML, the hidden mark, etc., and then sets the attachment angle. The motor 61 is controlled so that the lens holder 46 is rotated by rotating the ring-shaped gear 47 of the lens holder 46 so that the hidden mark or the like coincides with a mark (not shown) displayed on the liquid crystal display 11. The eyeglass lens ML held by the lens holder 46 is rotated around the optical axis.

  Alternatively, the arithmetic control circuit 130 measures the refractive characteristics of the spectacle lens ML with the CL measuring device 300, and then turns the spectacle lens ML into the rotating reflector 106, the entire detection optical system 100, and the illumination optical system 101 of the hidden mark detection optical system 200. , The lens holder 46 is rotated by rotating the ring-shaped gear 47 of the lens holder 46 by controlling the operation of the mounting angle setting motor 61 when there is a cylindrical shaft or the like. The spectacle lens ML held by the lens holder 46 is rotated around the optical axis.

  Thereafter, the arithmetic control circuit 130 controls the operation of the drive motor 77, transmits the rotation of the drive motor 77 to the male screw shaft 75 via the pulley 78, the timing belt 79, and the pulley 76, and rotates the male screw shaft 75. The internal thread cylinder 72 is moved downward.

  Accordingly, the movable arm 80 integral with the female screw cylinder 72 is lowered, the roller 84 at the tip of the movable arm 80 is separated from the horizontal plate portion 70a of the fixed arm 70, and the movable bracket 80 is twisted as shown in FIG. The coil spring 83 is rotated to the lower surface side of the movable arm 80 by the spring force. Finally, as shown in FIG. 18, the lens attracting jig 120 is directed downwardly in a state of being in close contact with the lower surface of the movable arm 80.

  On the other hand, with this operation, the roller 74 attached to the female screw cylinder 72 moves from the upper vertical slit portion 73a to the lower vertical slit portion 73c via the spiral slit portion 73b, and the movable arm 80 is integrated with the female screw cylinder 72. The lens suction jig 120 is moved to the upper side of the spectacle lens ML by being rotated to the 90 ° lens holder 46 side.

Thereafter, the female screw cylinder 72 and the movable arm 80 are further lowered, and the suction cup 122 of the lens suction shaft 120 at the tip of the movable arm 80 is attached to the spectacle lens ML on the shaft-shaped lens receiver 49 as shown in FIGS. Abutted.
Then, the arithmetic control circuit 130 controls the operation of the drive motor 77, further lowers the female screw cylinder 72 and the movable arm 80, and further pushes the mounting shaft 121 of the lens suction jig 120 into the outer cylinder 88. Thus, the slide cylinder 92 is slightly moved to the end wall 86c side of the holder body 86 against the spring force of the coil spring 93, and the lens adsorption jig 120 is adsorbed to the spectacle lens ML.

  Accordingly, the locking hook 98 is rotated counterclockwise in FIG. 24 by the spring force of the coil spring 99, and the inclined guide piece 98e is placed on the small diameter shaft portion 94a of the guide shaft 94 as shown in FIG. Moving. Thereby, the locking hook 98 is inclined as shown in FIG. 31B, and the inclined guide piece 98e is also inclined in the width direction.

  Thereafter, the arithmetic control circuit 80 reverses the drive motor 77 to raise the movable arm 80 integral with the female screw cylinder 72. Accordingly, the slide cylinder 92 is moved toward the lens mounting shaft 121 by the spring force of the coil spring 93, and the small-diameter shaft 94a of the guide shaft 94 attached to the slide cylinder 92 is integrated with the slide cylinder 92. It is moved to the front end side of the locking hook 98 along the inclined guide piece 98e.

  At this time, as shown in FIG. 31D, the small-diameter shaft portion 94a applies the rotational force F directed to the inclined guide piece 98e in the direction opposite to the rotation biasing direction of the locking hook 98 by the coil spring 99. Accordingly, the locking hook 98 is slightly rotated in the clockwise direction against the spring force of the coil spring 99 in FIG. 24, and the small-diameter shaft portion 94a of the guide shaft 94 is in the engagement notch 98d of the locking hook 98. Moved to.

  On the other hand, when the slide cylinder 92 is moved toward the lens attachment shaft 121 by the spring force of the coil spring 93, the attachment shaft portion 121 is pressed through the slide cylinder 92 by the spring force of the coil spring 93 and the outer cylinder 88 is tapered. The mounting shaft portion 121 is moved away from the linear portion 89 b of the linear spring 89 by being moved to the concave portion 88 c side. In this state, the mounting shaft 121 is easily detached from the outer cylinder 88.

When the arithmetic control circuit 80 further raises the female screw cylinder 72 and the movable arm 80, the roller 74 attached to the female screw cylinder 72 is raised in the lower vertical slit portion 73c, and the lens suction jig 120 is moved to the movable arm 80. Is removed from the outer tube 88 at the tip of the lens and remains adsorbed to the spectacle lens ML.
Thereafter, the roller 74 attached to the female screw cylinder 72 is moved from the lower vertical slit portion 73c to the upper vertical slit portion 73a via the spiral slit portion 73b, and the movable arm 80 rotates to the 90 ° side plate 5 side. Thus, the movable arm 80 is retracted from above the spectacle lens ML.

  When the movable arm 80 is raised and the roller 74 is raised in the upper vertical slit portion 73a, the roller 84 of the movable bracket 82 contacts the horizontal plate portion 70a of the fixed arm 70 as shown in FIG. As a result, the movable bracket 80 is directed downward as shown in FIG. 16 against the spring force of the torsion coil spring 83 shown in FIG. As a result, the movable bracket 80 faces the suction plate mounting opening 22 as shown in FIG. 1, and a new lens suction jig can be mounted.

As described above, by using the lens suction jig mounting device according to the present invention, the arithmetic control circuit 130 determines the presence / absence of the reference mark attached to the spectacle lens ML, and detects the whole detection optical system 100 / mark. The optical system 200 and the CL measuring device 300 are selected to automatically identify the attachment position of the suction jig, and the reference mark such as the mark mark is not attached to the toric (aspheric) spectacle lens at the disadvantages. Even if it is a thing, the attachment position of an adsorption | suction jig | tool can be specified and it becomes possible to perform an adsorption | suction operation correctly.

1 shows an appearance of a lens suction jig mounting device according to the present invention. It is explanatory drawing of the liquid crystal display of FIG. It is explanatory drawing of the display content of the liquid crystal display of FIG. It is explanatory drawing which shows the other example of the display content of the liquid crystal display of FIG. It is explanatory drawing which shows the other example of the display content of the liquid crystal display of FIG. FIG. 2 is a control circuit diagram of the lens suction jig mounting device shown in FIG. 1. It is a disassembled perspective view which shows the relationship between the outer case and frame of the lens adsorption jig mounting apparatus of FIG. FIG. 4 is a plan view of the frame of FIG. 3. It is a schematic explanatory drawing inside the lens adsorption | suction jig mounting apparatus shown in FIG. FIG. 6 is an operation explanatory diagram of FIG. 5. It is a perspective view of CL measuring device of Drawing 5 and Drawing 6. It is a perspective view for demonstrating the lens holder of FIG. 5, FIG. It is a top view of FIG. It is sectional drawing which follows the A1-A1 line | wire of FIG. It is sectional drawing which follows the A3-A3 line | wire of FIG. It is sectional drawing which follows the A2-A2 line | wire of FIG. (A) is a schematic perspective view for the principal part description of a lens holder, (b) is a schematic sectional drawing of the lens holder of (a). It is a schematic perspective view of the lens holder for frame replacement. It is a schematic perspective view which shows the state which mounted | wore the ring-shaped gear of the lens holder of FIG. 13 with the lens holder for frame replacement of FIG. It is a side view of the lens adsorption | suction mechanism shown in FIG. FIG. 17 is a partial schematic exploded perspective view of the lens suction mechanism shown in FIG. 16. FIG. 18 is an operation explanatory diagram of the lens suction mechanism shown in FIGS. 16 and 17. FIG. 18 is an operation explanatory diagram of the lens suction mechanism shown in FIGS. 16 and 17. FIG. 17 is a side view of the suction jig holding means shown with a part of the movable bracket of FIG. 16 cut away. It is explanatory drawing which showed the adsorption jig holding means of FIG. 16 partially cut along the centerline. (A) is sectional drawing which follows the centerline of the adsorption jig holding means of FIG. 16, (b) is a top view of the outer cylinder of (a), (c) is a partial perspective view of the outer cylinder of (b). . 22A is a perspective view of the holder main body of FIG. 22, FIG. 22B is a plan view of the holder main body of FIG. 22A viewed from the cylinder side, and FIG. 22C is a cross-sectional view taken along the axis of the outer cylinder of FIG. d) It is sectional drawing when the cylinder part of (a) and the outer cylinder of (c) are fitted. FIG. 23 is a cross-sectional view of the suction jig holding means in a state where the mounting shaft portion of the lens suction jig of FIG. 22 is further pushed in. It is a perspective view explaining the latching hook of the adsorption jig holding means of FIG. It is a front view of the latching hook of FIG. It is sectional drawing which follows the B1-B1 line | wire of FIG. FIG. 26 is a plan view of FIG. 25. It is a perspective view which shows the state which has mounted | worn with the lens suction jig on the spectacle lens on a lens holder by the suction jig holding means of FIG. It is a fragmentary sectional view which shows the relationship between the suction jig holding means of FIG. 28, a lens suction jig, and a spectacle lens. It is a fragmentary sectional view which follows the B2-B2 line of FIG. It is explanatory drawing explaining the effect | action of the latching hook of FIG.24 and FIG.30. It is the figure which showed the reference | standard mark attached | subjected to a progressive multifocal lens lens. It is the figure which showed the reference mark attached | subjected to a bifocal lens. 5 is a flowchart of lens type determination processing by an arithmetic control circuit. It is a flowchart which shows the process which calculates the adsorption jig adsorption position of an aspherical spectacle lens. It is a figure explaining the principle of the process which calculates the adsorption jig adsorption position of an aspherical spectacle lens.

Explanation of symbols

ML Eyeglass lens 32 Lens holding means moving mechanism (lens mounting means)
49 Axial lens receiver 46 Lens holder (lens mounting means)
66 Lens holding arm 68 Lens adsorption mechanism (jig mounting means)
100 Whole detection optical system (image imaging optical system)
115 CCD (optical element)
120 Lens suction jig (Suction jig)
130 arithmetic control circuit (arithmetic control means)
140 Lens shape (image)
141 Lens receiving shape (image)
151 Lens shape (image)
200 Hidden mark detection optical system (image imaging optical system)
300 CL measuring device (characteristic measuring optical means)

Claims (4)

A mounting table for mounting the aspheric spectacle lens, a rotating unit for rotating the aspheric spectacle lens mounted on the mounting table, and an imaging optical unit for capturing a lens image of the aspheric spectacle lens by the optical element; A characteristic measuring optical means for detecting an optical characteristic of the aspheric spectacle lens; and the presence or absence of a reference mark attached to the aspheric spectacle lens based on the lens image picked up by the imaging optical means; An arithmetic control means for detecting an optical characteristic of the aspherical spectacle lens using an optical means, and specifying a mounting position of the suction jig in the aspherical spectacle lens based on the detected optical characteristic; and the calculation In the suction jig mounting device for an aspheric spectacle lens having mounting means for mounting the suction jig at the mounting position on the aspheric spectacle lens specified by the control means,
The first optical axis coordinate of the aspheric spectacle lens measured by the characteristic measurement optical means and the first aspherical spectacle lens measured by the characteristic measurement optical means after being rotated by a predetermined angle by the rotation means. An operation for obtaining two optical axis coordinates, calculating an intermediate coordinate between the first optical axis coordinate and the second optical axis coordinate, and specifying an attachment position of the suction jig in the aspheric spectacle lens based on the intermediate coordinate Means,
A suction jig attachment device for an aspheric spectacle lens, comprising: an attachment means for controlling the attachment means to attach a suction jig to an attachment position on the aspheric spectacle lens. 2. The suction jig mounting device for an aspheric spectacle lens according to claim 1, wherein the predetermined angle is 180 degrees. A mounting table for mounting the aspheric spectacle lens, a rotating unit for rotating the aspheric spectacle lens mounted on the mounting table, and an imaging optical unit for capturing a lens image of the aspheric spectacle lens by the optical element; A characteristic measuring optical means for detecting an optical characteristic of the aspheric spectacle lens; and the presence or absence of a reference mark attached to the aspheric spectacle lens based on the lens image picked up by the imaging optical means; An arithmetic control means for detecting an optical characteristic of the aspherical spectacle lens using an optical means, and specifying a mounting position of the suction jig in the aspherical spectacle lens based on the detected optical characteristic; and the calculation In the position determination method of the suction jig mounting device for an aspherical spectacle lens, the mounting means for mounting the suction jig at the mounting position on the aspherical spectacle lens specified by the control means
The first optical axis coordinate of the aspheric spectacle lens is measured by the characteristic measuring optical means, and after the predetermined angle is rotated by the rotating means, the second optical axis coordinate of the aspheric spectacle lens is measured by the characteristic measuring optical means. Measure and
Calculate the intermediate coordinates between the first optical axis coordinates and the second optical axis coordinates,
Identify the attachment position of the suction jig in the aspheric spectacle lens based on the intermediate coordinates,
A suction jig attachment position determination method for an aspheric spectacle lens, wherein the attachment means is controlled to attach a suction jig to an attachment position on the aspheric spectacle lens. 4. The suction jig attachment position determination method for an aspheric spectacle lens according to claim 3, wherein the predetermined angle is 180 degrees.