JPH10132502A - Lens positioning device and axial centering device - Google Patents

Lens positioning device and axial centering device

Info

Publication number
JPH10132502A
JPH10132502A JP24312197A JP24312197A JPH10132502A JP H10132502 A JPH10132502 A JP H10132502A JP 24312197 A JP24312197 A JP 24312197A JP 24312197 A JP24312197 A JP 24312197A JP H10132502 A JPH10132502 A JP H10132502A
Authority
JP
Japan
Prior art keywords
lens
scale
provided
main body
layout
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24312197A
Other languages
Japanese (ja)
Inventor
Hiroaki Ogushi
Toru Sasaki
徹 佐々木
博明 大串
Original Assignee
Topcon Corp
株式会社トプコン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP8-236901 priority Critical
Priority to JP23690196 priority
Application filed by Topcon Corp, 株式会社トプコン filed Critical Topcon Corp
Priority to JP24312197A priority patent/JPH10132502A/en
Publication of JPH10132502A publication Critical patent/JPH10132502A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide an axial centering device which can certainly carry out the axial-centering of a lens even in the case of a colored lens. SOLUTION: In an axial centering device for carrying out the axial centering of a lens where the lens with a machining base point is set on a transparent lens receiving plate 23 having a layout scale 23a which is detachably arranged on a fixed scale plate 3 fixed to a main body 2, and the base point of the above lens and the layout scale 23a are aligned, and the above aligned lens is held by an attracting body 28 detachably attached to a gripearm 26 rotatably supported by the main body 2, the fixed scale plate 3 is formed of a light transmission member, and a natural lighting area 5 for taking in external light is provided below the above fixed scale plate 3 in the main body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens positioning device and a centering device for positioning and centering a lens.

[0002]

2. Description of the Related Art FIG.
This will be described with reference to FIG.

The centering device 30 includes a main body 2 on a substantially rectangular parallelepiped.
1, a fixed scale plate 22 made of, for example, a white synthetic resin plate having a cross scale 22a fixed horizontally in a substantially central position on the upper surface of the main body 21, and a slight (about 1 mm) A) a lens receiving plate 23 made of a transparent synthetic resin plate or the like which can be inserted and removed with a gap therebetween and provided with a layout scale 23a, and a bearing portion 24 provided at one end of the main body 21. A grip arm 26 rotatably supported in the directions of arrows a and b shown in FIG. 9 via a support shaft 25, and a suction receiver provided on a surface of the grip arm 26 facing the lens receiving plate 23. An adsorbent 28 detachably attached to the portion 27 and the layout scale 23a provided at an arm end 26a of the grip arm 26 projecting above the lens receiving plate 23 are visually recognized. It is and a viewing window 29 for.

As shown in FIG. 21, four lens holders 23b are mounted on the lens receiving plate 23 at predetermined intervals and in such an arrangement that the layout scale 23a is not obstructed. .

The lens receiving plate 23 slides in the width direction of the main body 21 as shown in FIG.
1 is detachable.

The above-described centering device 30 includes a lens 20 made of a transparent material such as a single vision lens having a base point 40 for processing on four lens receiving members 23b provided on the lens receiving plate 23. As shown in FIG. 23, the operator looks into the viewing window 29 and positions the base point 40 for processing the lens 20 with the layout scale 23a. In this state, the operator grips the grip arm 26 from directly above. 24, the lens 20 is sucked by the suction body 28 by rotating in the direction of arrow a as shown in FIG. 24, and then the grip arm 26 is returned in the direction of arrow b, as shown in FIG. The axis can be centered by removing the adsorbent 28 that has adsorbed the lens 20 from the lens 27. In this state, the lens 20 is set in a lens processing device (rubbing machine) (not shown). And performs the processing of Nozomi.

[0007]

However, in the case of the above-described conventional centering device 30, it is possible to perform centering in the case of the lens 20 made of a transparent material. In the case of a colored lens 50 that is processed to be used for sunglasses as shown in the figure, when the colored lens 50 is placed on four lens receiving members 23a provided on the lens receiving plate 23, Board 23
Since the gap between the fixed scale plate 22 and the fixed scale plate 22 is about 1 mm, light from above the colored lens 50 is blocked by the colored lens 50 and the lens receiving plate 23
Is significantly reduced, and as a result, the layout scale 23a also becomes dark as shown in FIG.

For this reason, the base point 40 and the layout scale 23a are difficult to see, and as shown in FIG. 26, there is a problem that it is difficult to align the processing base point 40 with the layout scale 23a.

In the case of a colored lens 50 having a prism, a processing base 40 and a layout scale 2
The difficulty of alignment with 3a becomes more remarkable, and there is a problem that it is difficult to produce a colored lens 50 having desired optical characteristics due to occurrence of an axis shift or an optical axis shift.

Conventionally, in order to avoid such inconvenience, the fixed scale plate 22 is illuminated in a backlight manner with an illuminating lamp or the like to make it bright, and the processing base point 40 and the layout scale 23a are aligned. Although an easy configuration has been proposed, such a configuration has a problem that the configuration is complicated and the cost is increased.

In the case of the above-described conventional centering device 30, when centering the lens 20 or the colored lens 50, an operator looks through the viewing window 29 to obtain the processing base point 40. And the layout scale 23
When performing alignment with a, there is no visual axis alignment target or the like for completely aligning the visual axis of the operator's eye with the center of the layout scale 23a. A parallax L as shown in FIG. 27, which is a deviation between the position of the base point 40 and the position of the line of the layout scale 23a due to the positional deviation, occurs, and an alignment error easily occurs due to the disparity. There is.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a lens positioning device and a centering device capable of reliably performing positioning and centering of not only ordinary lenses but also colored lenses. It is intended to provide a device.

Another object of the present invention is to provide an alignment apparatus which can completely match the visual axis of the operator with the layout scale line and can avoid an alignment error.

[0014]

According to the first aspect of the present invention,
In a lens positioning device for positioning a lens provided with a base point or a base line on a lens receiving plate provided with a layout scale on a fixed scale plate provided in a main body and positioning the lens, the fixed scale plate Is formed by a member capable of transmitting light, and a lighting area for taking in external light is provided below the fixed scale plate in the main body.

According to a second aspect of the present invention, a lens provided with a base point or a base line is mounted on a transparent lens receiving plate provided with a layout scale which is removably disposed on a fixed scale plate provided on the main body. Placing, the base point or base line of the lens,
Alignment with the layout scale is performed, and the aligned lens is held by an adsorbent detachably attached to a grip arm rotatably supported by the main body, thereby centering the lens. In the centering device, the fixed scale plate is formed of a member capable of transmitting light, and the main body is provided with a lighting area below the fixed scale plate for receiving external light.

According to a third aspect of the present invention, a lens provided with a base point or a base line is placed on a transparent lens receiving plate which is detachably mounted on a fixed scale plate provided on a main body, and the lens is mounted on the lens. An axis for centering the lens by aligning a base point or a base line and holding the aligned lens by an adsorbent detachably attached to a grip arm rotatably supported by the main body. In the output device, a columnar lens supporting member made of a transparent material having a layout scale provided on the upper surface of the lens receiving plate is provided, and light is introduced from the outside by the lens supporting member itself to increase the brightness of the layout scale. The centering of the lens with respect to the layout scale is performed while raising.

According to a fourth aspect of the present invention, a lens provided with a base point or a base line is mounted on a transparent lens receiving plate provided with a layout scale which is removably disposed on a fixed scale plate provided on the main body. The base point or base line of the lens, and the layout scale, by looking through a viewing window provided at an arm end located above the fixed scale plate of the grip arm rotatably supported by the main body. In the alignment apparatus for performing alignment, a viewing axis alignment member for matching a center of the layout scale with a center of a viewing axis is added to the viewing window.

According to a fifth aspect of the present invention, a lens provided with a base point or a base line is mounted on a transparent lens receiving plate provided with a layout scale which is removably disposed on a fixed scale plate provided on the main body. The base point or base line of the lens, and the layout scale, by looking through a viewing window provided at an arm end located above the fixed scale plate of the grip arm rotatably supported by the main body. In an axis alignment device for performing position alignment, a visual axis alignment member that matches the center of the visual axis with the center of the layout scale added to the viewing window, and the visual axis alignment member provided on a peripheral part of the layout scale of the fixed scale plate. A visual axis alignment assisting target for assisting visual axis alignment using a visual axis alignment member is provided.

According to the positioning device of the first aspect of the present invention, the fixed scale plate is formed of a member capable of transmitting light, and the main body is provided with a lighting area below the fixed scale plate for taking in external light. Therefore, a colored lens is placed on a lens receiving plate, and even when a base point or a base line attached to the colored lens is aligned with the layout scale, external light taken in below the fixed scale plate is used. The brightness of the layout scale is sufficiently ensured, and the positioning of the colored lens can be reliably performed.

According to the second aspect of the present invention, the fixed scale plate is formed of a member capable of transmitting light, and the main body is provided with a lighting area for taking in external light below the fixed scale plate. Since the colored lens is provided on the lens receiving plate and the reference point or the base line attached to the colored lens is aligned with the layout scale, external light introduced below the fixed scale plate is also provided. Thereby, the brightness of the layout scale is sufficiently ensured, and even in the case of a colored lens, the centering thereof can be reliably performed.

According to the third aspect of the present invention, a columnar lens supporting member made of a transparent material having a layout scale provided on the upper surface is provided on the lens receiving plate. Since the axis of the lens is aligned with respect to the layout scale while increasing the brightness of the layout scale by introducing light from the outside by the member itself, the colored lens is placed on the lens support member,
Even in the case where the base point or the base line attached to the colored lens is aligned with the layout scale, the brightness of the layout scale is sufficiently ensured by the light introduced from the outside by the support member itself. Alignment can be performed reliably.

According to the centering device according to the fourth aspect of the present invention, since the viewing axis is provided with the visual axis alignment member for matching the center of the layout scale with the center of the visual axis, the viewing window is provided. The center of the visual axis of the operator can be made to exactly coincide with the center of the layout scale by using the visual axis alignment member that is visually recognized when looking in, and the occurrence of centering error can be avoided.

According to the centering apparatus according to the fifth aspect of the present invention, in addition to the configuration of the centering apparatus according to the second aspect of the present invention, a visual axis alignment assisting target is provided around the layout scale. Therefore, at the time of visual axis alignment using the visual axis alignment member, visually recognize this visual axis alignment assisting target together,
By matching the viewing position relationship between the visual axis alignment member and the visual axis alignment auxiliary visual target, the center of the visual axis of the operator can be more accurately matched to the center of the layout scale, and the occurrence of an axis alignment error can be reduced. This can be avoided more reliably.

According to a sixth aspect of the present invention, there is provided a centering device, wherein a lens provided with a base point or a base line is mounted on a lens receiving plate provided on a main body, and the base point or the base line of the lens on the lens receiving plate. An alignment device that performs alignment of the lens and holds the aligned lens by an adsorbent detachably attached to a grip arm rotatably supported by the main body, thereby aligning the lens. A scale projection optics for forming a lens receiving plate of the main body by a light transmitting member, and projecting a layout scale image for positioning a base point or a base line of the lens from below the lens receiving plate onto the lens receiving plate. A system is provided.

According to the present invention, the lens receiving plate of the main body is formed of a light transmitting member, and the scale projection optical system allows the base point or the base line of the lens with respect to the lens receiving plate from below the lens receiving plate. Since the layout scale image for positioning is projected, the layout scale image clearly appears on the lens receiving plate, a colored lens is placed on the lens receiving plate, and the colored lens is placed on the lens receiving plate. In the case where the base point or the base line attached to the alignment scale image is aligned with the base point or the base line attached to the colored lens, the alignment of the colored lens is surely performed while easily performing the alignment of the base point or the base line attached to the colored lens. It can be carried out.

According to a seventh aspect of the present invention, in the centering device, a lens provided with a base point or a base line is mounted on a lens receiving plate provided on a main body, and the base point or the base line of the lens is provided on the lens receiving plate. An alignment device that performs alignment of the lens and holds the aligned lens by an adsorbent detachably attached to a grip arm rotatably supported by the main body, thereby aligning the lens. A scale projection optics for forming a lens receiving plate of the main body by a light transmitting member, and projecting a layout scale image for positioning a base point or a base line of the lens from below the lens receiving plate onto the lens receiving plate. System and a projection position adjustment mechanism capable of arbitrarily adjusting the projection position of the layout scale image on the lens receiving plate by the scale projection optical system. It is an feature.

According to this invention, in addition to the function of the centering device according to the sixth aspect of the present invention, the projection position adjusting mechanism can arbitrarily adjust the projection position of the layout scale image on the lens receiving plate. Alignment of various lenses having different base line positions can be easily and reliably performed.

[0028]

Embodiments of the present invention will be described below in detail.

(Embodiment 1) FIGS. 1 and 2 show an alignment apparatus 1 which also functions as a lens positioning apparatus according to Embodiment 1 of the present invention, and a conventional alignment apparatus shown in FIG. Components having the same functions as those of the device 30 are denoted by the same reference numerals.

The centering device 1 includes a main body 2 on a substantially rectangular parallelepiped.
And a fixed scale plate 3 made of a transparent or translucent synthetic resin plate or the like which has a cross scale 22a fixed in a horizontal position substantially at the center of the upper surface of the main body 2 and capable of transmitting light.
A lens receiving plate 23 made of a transparent synthetic resin plate or the like which is detachably disposed on the fixed scale plate 3 with a slight gap (about 1 mm) therebetween and provided with a layout scale 23a; 2 provided at one end of the bearing 2
A grip arm 26 rotatably supported in the directions of arrows a and b shown in FIG. 9 via a support shaft 25 with respect to 4, and provided on a surface of the grip arm 26 facing the lens receiving plate 23. A suction body 28 detachably attached to the suction receiving portion 27, and a viewing window 29 for visually recognizing the layout scale 23a provided at an arm end 26a of the grip arm 26 protruding above the lens receiving plate 23. Is provided.

The fixed scale plate 3 in the main body 2
At the lower side of the position where the
A concave portion 4 formed of, for example, a white synthetic resin material that forms a light-receiving region 5 that receives light is provided below.

As shown in FIG. 1, on the lens receiving plate 23, as in the conventional example, four lens receiving members 23b are arranged at predetermined intervals and do not hinder the visual recognition of the layout scale 23a. Installed with.

As shown in FIG. 3, the lens receiving plate 23 is slidable in the width direction of the main body 2 and can be attached to and detached from the main body 2 as in the conventional example.

In the centering device 1 described above, the colored lens 50 having the base point 40 for processing is placed on the four lens receiving members 23b provided on the lens receiving plate 23, and the operation is performed as shown in FIG. An operator looks through the viewing window 29 and aligns the processing reference point 40 of the colored lens 50 with the layout scale 23a.

At this time, external light enters the lighting area 5 below the fixed scale plate 3, and the external light strikes the bottom surface of the concave portion 4 and is reflected on the bottom surface side of the fixed scale plate 3. Also, the brightness of the layout scale 23a is sufficiently ensured. As a result, as shown in FIG. 3, even in the case of the colored lens 50, the positional relationship between the processing base point 40 and the layout scale 23a is clearly visually recognized. Positioning of both can be performed reliably.

Thereafter, the grip arm 26 is rotated in the direction of arrow a in the same manner as in the prior art, and the colored lens 50 is sucked by the suction body 28. Further, the grip arm 26 is returned in the direction of arrow b to receive the suction. Centering can be performed by removing the adsorbing body 28 that has absorbed the colored lens 50 from the section 27. In this state, the colored lens 50 is set in a lens processing device (rubbing machine) (not shown) to perform desired processing. It can be carried out.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS.

FIG. 4 shows a centering device 1 according to a second embodiment of the present invention.
A, which has the same function as that of the centering device 1 shown in FIG. 1, is denoted by the same reference numeral. This alignment device 1A has, in addition to the configuration of the alignment device 1 shown in FIG. 1, a visual axis that allows the viewing window 29 to match the center of the layout scale 23 a with the center of the visual axis of the operator's eye. In this embodiment, a gelatin filter 31 which is a ring and is colored in, for example, blue or the like is added.

FIG. 5 shows a state where the viewing window 29 is removed in this configuration. As is clear from FIG. 5, by looking into the layout scale 23a through the viewing window 29 to which the gelatin filter 31 is added, the center of the layout scale 23a is aligned with the center of the layout scale 23a using the circular contour 31a of the gelatin filter 31 as a guide. It is easy to change the position of the eyes so that they coincide with each other, the parallax phenomenon is eliminated, the center of the visual axis of the operator can be exactly coincident with the center of the layout scale 23a, and the occurrence of centering errors can be reduced. Can be avoided.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 6 shows a centering device 1 according to a third embodiment of the present invention.
B, which have the same functions as those of the centering device 1A shown in FIG. This alignment device 1B has the layout scale 23 as shown in FIG. 7 in addition to the configuration of the alignment device 1A shown in FIG.
A ring scale 32, which is an auxiliary visual target for visual axis alignment, is provided in a peripheral portion of a.

According to the centering device 1B, when the visual axis is adjusted using the gelatin filter 31, the ring scale 32 is also visually recognized, and the visual position between the circular contour 31a of the gelatin filter 31 and the ring scale 32 is visually recognized. It is extremely easy to change the position of the eyes so that the relationship becomes concentric as shown in FIG. 8, and the center of the visual axis of the operator can be more accurately matched to the center of the layout scale 23a. The lux phenomenon is eliminated, and the occurrence of centering error can be avoided more reliably.

The gelatin filter 31 described above,
The configuration in which the ring scale 32 is provided is also applicable to the conventional centering device 30 shown in FIG.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIGS.

FIG. 9 shows an alignment device 1 according to a fourth embodiment of the present invention.
C, and those having the same functions as the centering device 1 shown in FIG. 1 are denoted by the same reference numerals. The centering device 1C has substantially the same configuration as that of the centering device 1 shown in FIG. 1, except that the daylighting region 5 is eliminated and a layout scale 61 is attached to the center of the lens receiving plate 23 on the upper surface. Cylindrical lens support member 6 (about 42 mm in diameter and about 14 mm in height) made of a transparent material such as acrelle resin
0 is provided, and light is introduced from the outside by the lens support member 60 itself to center the lens 20 on the layout scale 61 while increasing the brightness of the layout scale 61.

As shown in FIG. 10, the centering device 1C picks up the lens 20 provided with the mark 40 with a finger, puts it on the lens support member 60, and observes it through the viewing window 29 in FIG.
As shown in FIG. 1, the lens 20 is aligned with the base point 40 of the lens 20.

Thus, even when the colored lens 50 is placed on the lens supporting member 60 and the base point 40 attached to the colored lens 50 is aligned with the layout scale 61, the lens supporting member 60 itself can be used. By the light introduced from the outside, the brightness of the layout scale 61 is sufficiently ensured, and even in the case of a colored lens, the alignment can be reliably performed.

According to the centering device 1C, FIG.
As shown in FIG. 7, the parallax ΔL0 when the lens 20 is placed on the lens support member 60 is smaller than the parallax ΔL when the lens 20 is placed on the lens holder 23. Since the distance is short, the relationship of ΔL0 <ΔL is satisfied, and there is an advantage that the parallax phenomenon can be further reduced.

(Embodiment 5) Next, FIGS.
Embodiment 5 of the present invention will be described with reference to FIG.

FIG. 13 shows a centering device 1D according to a fifth embodiment of the present invention. FIG. 14 shows a scale projection optical system according to the fifth embodiment and the scale projection optical system shown in FIG. 5 shows a moving mechanism for moving in the Y direction.

The centering device 1D of the fifth embodiment has a substantially rectangular parallelepiped main body 2 and a horizontal arrangement at a substantially central position on the upper surface of the main body 2 so as to be insertable into and removable from the main body 2. A cross scale 71 made of a transparent synthetic resin plate or the like,
A lens receiving plate 23 attached at a predetermined interval and at a position that does not hinder the visibility of the cross scale 71, and a scale as shown in FIG. 14 disposed below the lens receiving plate 23. A projection optical system 72 and a moving mechanism 73 for moving the scale projection optical system 72 in the X and Y directions shown in FIG.

A grip arm 26 is rotatably supported on a bearing 24 provided at one end of the main body 2 via a support shaft 25 in the directions of arrows a and b shown in FIG.
A suction body 28 detachably attached to a suction receiving portion 27 provided on a surface of the grip arm 26 opposite to the lens receiving plate 23; and a protrusion of the grip arm 26 above the lens receiving plate 23. And a viewing window 29 for visually recognizing the cross scale 71 provided at the arm end 26a.

The scale projection optical system 72 is mounted on a housing 74 arranged on a moving mechanism 73. As shown in FIG. 14, the scale projection optical system 72 includes a light source 75 such as a light source lamp that emits light,
A condenser lens 76 for condensing light from the condenser lens 5 and a condenser lens 7
15, a mask plate 78 on which a vapor deposition pattern 77 is formed as shown in FIG. 15 for generating a layout scale image by transmitting the light from the light source 6, and a reflection of the light transmitted through the mask plate 78 bent at 90 degrees and emitted upward. A mirror 79 and an imaging lens 80 which receives light from the reflection mirror 79 and forms an image on the back surface of the lens receiving plate 23 are provided.

As the light source 75, a laser light source that emits laser light such as a laser diode can be used. In this case, the condensing lens 76 may be replaced with a diffusing plate for diffusing laser light or optics combining the diffusing plate and the condensing lens instead of the condensing lens 76.

The mask plate 78 and the back surface of the lens receiving plate 23 are at a conjugate position with respect to the light source 75, so that a layout scale image 100 based on the shape of the vapor deposition pattern 77 is formed as shown in FIG. An image is clearly formed on the back surface of the plate 23. In the layout scale image 100, the mark point pitch p of the lens meter
Are formed so as to form the mark image 100a.

As shown in FIG. 14, the moving mechanism 73 includes a Y table 91 and an X table 91 arranged below the scale projection optical system 72 in the upper body 2 below the housing 74.
A table 81 is provided.

The X table 81 is positioned on the bottom of the main body 2 as shown in FIG.
The Y table 91 is arranged so as to be movable in the X direction shown in FIG. 14 in the Y direction shown in FIG.

The X side of the X table 81 has X
A first rack 82 along the direction is provided, and a second rack 92 along the Y direction is provided on the front surface of the Y table 91 (the front side of the main body 2).

On the other hand, an end of the first shaft 83 rotatably supported by the side member 2a of the main body 2 on the X table 81 side is screwed to a first rack 82 of the X table 81. An X dial 85 with a scale in units of mm, for example, is attached to an end of the first shaft 83 protruding outside the side member 2a.

Further, the end of the second shaft 93, which is rotatably supported by a support member 96 attached to the front portion (the front side of the main body 2) of the X table 81, is provided on the Y table 91 side. A second pinion 94 screwed to the second rack 9 of 91 is attached.
6, through holes 2c provided in the front member 2b of the main body 2.
For example, a Y dial 95 with a scale in mm units is attached to the front end of the main body 2 of the second shaft 93 through which the second dial 93 passes.

According to the centering device 1D of the fifth embodiment having such a structure, the layout scale image 100 is placed below the cross scale 71 of the lens receiving plate 23 by the scale projection optical system 72 as shown in FIG. Image can be clearly formed.

In this case, if a configuration using a laser light source as the light source is employed, the intensity of the laser light is extremely high. Therefore, even when the centering device 1D is arranged in a place where the surrounding environment is bright, the layout scale image 100 Is extremely bright, and the recognition of the layout scale image 100 becomes clear, so that the mark marks of the colored lens 50 and the mark image 100a of the layout scale image 100 can be surely aligned.

By rotating the X dial 85 with the scale, the X table 81 is moved to the Y table 9.
1 and the housing 74, the layout scale image 100 can be moved several mm in the X direction with respect to the cross scale 71 of the lens receiving plate 23 as shown in FIG.
The X table 81 can be moved by a predetermined distance or by rotating the Y dial 95 with the scale.
The Y table 91 can be moved in the Y direction together with the housing 74 without changing the position of the layout scale image 1.
00 can be moved by a predetermined distance such as several mm in the Y direction with respect to the cross scale 71 of the lens receiving plate 23 as shown in FIG.

By moving the layout scale image 100 in the X and Y directions as described above, the color lens 5
It is possible to appropriately cope with the setting of the prism prescription of the colored lens 50 and the setting of the eye point, for example, when various powers are set to 0, or the lens prescription corresponding to the oblique position of the eye to be examined is performed. Further, it is possible to appropriately cope with a case where an optical layout design is performed on a half-color type or a colored lens 50 with gradation.

Further, by clearly forming the layout scale image 100 on the lens receiving plate 23 and arbitrarily moving the layout scale image 100 in the X and Y directions, four colored lenses 50 are formed as shown in FIG. Even when the centering is performed on the lens receiver 23b, the mark mark of the colored lens 50 and the mark mark image 100a of the layout scale image 100 can be surely aligned with each other. Alignment of the colored lens 50 having the above optical characteristics can also be supported.

FIG. 20 shows a modification of the fifth embodiment, in which a concave lens 98 is arranged between the condenser lens 76 and the mask plate 78 in the scale projection optical system 72 to provide an enlarged optical system. In addition to the configuration, the mask plate 78 can be moved and adjusted in the arrow X direction shown in FIG. 20 by using, for example, a drive mechanism (not shown).

In this manner, the layout scale image 100 based on the vapor deposition pattern 77 on the mask plate 78 can be enlarged and projected.
Is enlarged, the size of the mask plate 78 can be reduced, and the configuration of the scale projection optical system 72 can be reduced accordingly.

In this case, when a laser light source is used as the light source, it is difficult to project the layout scale image 100 in an enlarged manner. In this case, for example, a rotary prism is disposed downstream of the mask plate 78 and the optical system By rotating the optical axis in the X direction or the Y direction by rotating the rotary prism, the layout scale image 100 can be moved in any direction as in the case described above.

In the first embodiment, the base point 40
Although the colored lens 50 is described above, the present invention can be similarly applied to a case of a bifocal lens or a progressive lens provided with a base line having a predetermined shape.

In the above-described fifth embodiment, the case where the layout scale image 100 is manually moved in an arbitrary direction has been described. X
The movement amount in the direction and the Y direction is input, and the moving mechanism 73 is driven by a driving unit (not shown) to drive the layout scale image 10.
0 is automatically moved in the X direction or the Y direction, or the prescription value of the colored lens 50 pre-stored in the IC card is fetched using an interface or the like, and the moving mechanism 73 is driven by driving means (not shown). To automatically move the layout scale image 100 in the X direction or the Y direction.

[0071]

According to the first aspect of the present invention, there is provided a lens positioning device capable of sufficiently securing the brightness of a layout scale even when positioning a colored lens and ensuring the positioning. can do.

According to the second aspect of the present invention, even when the colored lens is positioned in the same manner as in the first aspect of the invention, the brightness of the layout scale is sufficiently ensured and the centering of the axis is achieved. It is possible to provide an alignment device that can be reliably performed.

According to the third aspect of the present invention, it is possible to provide a centering device capable of sufficiently securing the brightness of the layout scale on the lens supporting member and performing centering thereof.

According to the fourth aspect of the present invention, the center of the visual axis of the operator can be made to exactly coincide with the center of the layout scale, and the occurrence of an alignment error can be avoided. Can be provided.

According to the fifth aspect of the present invention, the center of the visual axis of the operator is more accurately positioned by adjusting the visual positional relationship between the visual axis alignment member and the visual axis alignment auxiliary target. Can be provided, and an alignment device can be provided that can more reliably avoid the occurrence of an alignment error.

According to the sixth aspect of the present invention, even when the base point or the base line attached to the colored lens is aligned with the layout scale image, the position of the base point or the base line attached to the colored lens can be adjusted. It is possible to provide an axis aligning device capable of easily aligning a colored lens while easily performing alignment.

According to the seventh aspect of the invention, in addition to the effect of the centering device according to the sixth aspect, the projection position adjusting mechanism can arbitrarily adjust the projection position of the layout scale image on the lens receiving plate. With this configuration, it is possible to provide an axis alignment device that can easily and reliably execute axis alignment for various lenses having different base points or base line positions.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a centering device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the centering device according to the first embodiment of the present invention with the lens receiving plate removed.

FIG. 3 is an explanatory diagram showing an alignment state between a colored lens and a layout scale in the centering device according to the first embodiment of the present invention;

FIG. 4 is a perspective view showing a centering device according to a second embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a state of visual axis alignment with respect to a layout scale in an axis aligning device according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a centering device according to a third embodiment of the present invention.

FIG. 7 is a perspective view showing a lens receiving plate according to a third embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a state of visual axis alignment with respect to a layout scale in an axis aligning device according to a third embodiment of the present invention.

FIG. 9 is a perspective view showing a centering device according to a fourth embodiment of the present invention.

FIG. 10 is a perspective view showing a normal use state of the centering device according to the fourth embodiment of the present invention.

FIG. 11 is a perspective view showing an alignment state of lenses in an axis aligning device according to Embodiment 4 of the present invention.

FIG. 12 is an explanatory diagram showing a comparison between parallax in a centering device according to a fourth embodiment of the present invention and parallax when a lens is placed on a lens holder.

FIG. 13 is a perspective view showing a centering device according to a fifth embodiment of the present invention.

FIG. 14 is a perspective view showing a scale projection optical system and a moving mechanism according to a fifth embodiment of the present invention.

FIG. 15 is a perspective view showing a mask plate of a scale projection optical system according to a fifth embodiment of the present invention.

FIG. 16 is an explanatory diagram showing a projection state of a layout scale image by a scale projection optical system according to a fifth embodiment of the present invention.

FIG. 17 is an explanatory diagram showing a state in which a layout scale image is moved in an X direction by a scale projection optical system according to a fifth embodiment of the present invention.

FIG. 18 is an explanatory diagram illustrating a state in which a layout scale image is moved in a Y direction by a scale projection optical system according to a fifth embodiment of the present invention.

FIG. 19 is an explanatory diagram showing a state in which a colored lens is aligned with a layout scale image by a scale projection optical system according to a fifth embodiment of the present invention.

FIG. 20 is a schematic diagram showing another example of the scale projection optical system according to the fifth embodiment of the present invention.

FIG. 21 is a perspective view showing a conventional centering device.

FIG. 22 is a perspective view showing a centering device of a conventional centering device with a lens receiving plate removed.

FIG. 23 is an explanatory diagram showing a state of alignment between a lens and a layout scale in a conventional centering device.

FIG. 24 is a side view showing a lens suction operation in a conventional centering device.

FIG. 25 is a side view showing an adsorbing body that adsorbs a lens in a conventional centering device.

FIG. 26 is an explanatory diagram showing a state of alignment between a colored lens and a layout scale in a conventional centering device.

FIG. 27 is an explanatory diagram showing a paraxic phenomenon in a conventional centering device.

[Explanation of Signs] 1 Axis device 2 Main body 3 Fixed scale plate 4 Recess 5 Lighting area 23a Layout scale 23 Lens receiving plate 26 Grip arm 28 Adsorbent 29 Viewing window 31 Gelatin filter 32 Ring scale 40 Base 50 Colored lens 60 Lens support Member 61 Layout scale 72 Scale projection optical system 73 Moving mechanism

Claims (7)

[Claims]
1. A lens positioning apparatus for positioning a lens provided with a base point or a base line on a lens receiving plate provided with a layout scale on a fixed scale plate provided on a main body and positioning the lens. A lens positioning device, wherein the fixed scale plate is formed of a member capable of transmitting light, and a light-receiving area for taking in external light is provided below the fixed scale plate in the main body.
2. A lens provided with a base point or a base line is placed on a transparent lens receiving plate provided with a layout scale which is removably disposed on a fixed scale plate provided on a main body, and the lens of the lens is provided. A base point or a base line is aligned with the layout scale, and the aligned lens is held by an adsorbent detachably attached to a grip arm rotatably supported by the main body. In the axis setting device, the fixed scale plate is formed of a member capable of transmitting light, and the main body is provided with a daylighting area for taking in external light below the fixed scale plate. Output device.
3. A lens provided with a base point or a base line is placed on a transparent lens receiving plate detachably mounted on a fixed scale plate provided on a main body, and the base point or the base line of the lens is aligned. And the aligned lens is
In a centering device for centering the lens by holding it with a suction body detachably attached to a grip arm rotatably supported by the main body, a layout scale is provided on an upper surface of the lens receiving plate. A lens support member having a columnar shape made of a transparent material, and light is introduced from the outside by the lens support member itself to center the lens on the layout scale while increasing the brightness of the layout scale. Axis device.
4. A lens provided with a base point or a base line is placed on a transparent lens receiving plate provided with a layout scale which is detachably mounted on a fixed scale plate provided on the main body, and the main body is used by the main body. An axis for positioning the base point or base line of the lens with the layout scale by looking through a viewing window provided at an arm end of the rotatably supported grip arm located above the fixed scale plate. In the apparatus, a viewing axis aligning member for adding a center of the layout scale to a center of a viewing axis is added to the viewing window.
5. A lens provided with a base point or a base line is placed on a transparent lens receiving plate provided with a layout scale which is detachably disposed on a fixed scale plate provided on the main body, and is mounted on the main body by the main body. An axis for positioning the base point or base line of the lens with the layout scale by looking through a viewing window provided at an arm end of the rotatably supported grip arm located above the fixed scale plate. In the apparatus, a visual axis alignment member that matches the center of the visual axis with the center of the layout scale added to the viewing window, and the visual axis alignment member provided on the periphery of the layout scale of the fixed scale plate are used. And a visual axis alignment assisting target for assisting visual axis alignment.
6. A lens provided with a base point or a base line is placed on a lens receiving plate provided on a main body, and the base point or the base line of the lens is aligned on the lens receiving plate. A centering device for centering the lens by holding the lens with a suction body detachably attached to a grip arm rotatably supported by the body, wherein the lens receiving plate of the body is a light transmitting member. And a scale projection optical system for projecting a layout scale image for positioning the base point or the base line of the lens from below the lens receiving plate onto the lens receiving plate. apparatus.
7. A lens provided with a base point or a base line is placed on a lens receiving plate provided on a main body, and the base point or the base line of the lens is aligned on the lens receiving plate. A centering device for centering the lens by holding the lens with a suction body detachably attached to a grip arm rotatably supported by the body, wherein the lens receiving plate of the body is a light transmitting member. And a scale projection optical system for projecting a layout scale image for positioning the base point or the base line of the lens from below the lens receiving plate onto the lens receiving plate, and a layout scale using the scale projecting optical system. And a projection position adjusting mechanism capable of arbitrarily adjusting a projection position of the image on the lens receiving plate.
JP24312197A 1996-09-06 1997-09-08 Lens positioning device and axial centering device Pending JPH10132502A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8-236901 1996-09-06
JP23690196 1996-09-06
JP24312197A JPH10132502A (en) 1996-09-06 1997-09-08 Lens positioning device and axial centering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24312197A JPH10132502A (en) 1996-09-06 1997-09-08 Lens positioning device and axial centering device

Publications (1)

Publication Number Publication Date
JPH10132502A true JPH10132502A (en) 1998-05-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP24312197A Pending JPH10132502A (en) 1996-09-06 1997-09-08 Lens positioning device and axial centering device

Country Status (1)

Country Link
JP (1) JPH10132502A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7686674B2 (en) 2006-04-03 2010-03-30 Nidek Co., Ltd. Cup attaching apparatus
US7937826B2 (en) 2006-04-03 2011-05-10 Nidek Co., Ltd. Cup attaching apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7686674B2 (en) 2006-04-03 2010-03-30 Nidek Co., Ltd. Cup attaching apparatus
US7937826B2 (en) 2006-04-03 2011-05-10 Nidek Co., Ltd. Cup attaching apparatus

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