JPH09300190A - Lens holding method and lens holding device and lens machining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To bond a lens on a reference face of a recess plate with high precision. SOLUTION: In a lens holding method in which a lens W to be machined is held onto a holding member 7 and is polished by a polishing device, adhesive is applied to a reference hold position provided in a storage part 7a which stores the lens W of the hold member 7, the lens W is put on it, and then a face Wa to be machined of the lens is pressed by a soft member 4 having a contact face which is close to the face Wa to be machined to fix the lens W due to the solidification of adhesive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens holding method, a lens holding device and a lens processing method for holding a lens against a recess plate in a processing device such as a polishing device when processing the lens. is there.

[0002]

2. Description of the Related Art When processing a lens, it is necessary to process the dimensional accuracy of the wall thickness of the lens center with high accuracy in order to maintain high optical characteristics. In order to process with high accuracy, not only the accuracy of a processing device such as a polishing device but also the accuracy of attaching the lens to the recess dish is required to be high.

As shown in FIG. 20 (a), a conventional method for attaching a lens to a recess dish is that the recess dish 1 is provided with a positioning recess 101 having a stepped portion serving as a reference plane S0.
00, an adhesive agent 102 is applied on the reference surface S0, the lens W0 is picked up and placed on the adhesive agent 102 with a finger, and the lens W0 is rotated while being pressed in the direction of an arrow N to be attached to the reference surface S0.

[0004]

However, according to the above-mentioned conventional technique, since the lens W0 is pinched by the finger and pressed against the reference surface S0 with the adhesive 102 interposed, as shown in FIG. In addition, the spherical surface of the lens W0 may not be in close contact with the reference surface S0, or may move while the adhesive 102 is not solidified, and may be attached in an inclined state due to a portion surrounded by the circle A. Thus, the reference plane S0
When the lens W0 attached in an inclined state with respect to the lens is processed, as shown in FIG. 21, not only the dimensional accuracy of the wall thickness H0 at the center of the lens deteriorates, but also the wall thickness of the lens peripheral portion is large. There is an unsolved problem that a lens having high optical characteristics cannot be obtained because G1 and a thin portion G2 are formed.

Therefore, the present invention has been made in view of the above-mentioned problems, and provides a lens holding method, a lens holding device, and a lens processing method capable of accurately attaching a lens to a reference surface of a recess dish. It is intended to be realized.

[0006]

Means for Solving the Problems The above-mentioned problems are solved,
In order to achieve an object, a lens holding method according to the present invention is a method of holding a lens to be processed and polishing the lens by a polishing means. Adhesive is applied to the reference holding position provided on the part, the lens is placed, and then the surface to be processed of the lens is pressed by a flexible member having an abutting surface similar to the surface to be processed for adhesion. The feature is that the lens is fixed by solidifying the agent.

The lens holding method according to the present invention is characterized in that vibration is applied to the lens holding member when the lens is pressed by the flexible member.

The lens holding method according to the present invention is characterized in that the holding member is heated to a predetermined temperature before the adhesive is applied to the holding member.

The lens holding method according to the present invention is characterized in that the holding member is air-cooled until the adhesive is solidified.

The lens holding method according to the present invention is
In a method of holding a lens to be processed and holding the lens on a holding member that is polished by a polishing means, a lens accommodating recess having a radius smaller than a radius of curvature of a processed surface of the lens is formed on an outer peripheral surface of the holding member. An adhesive is applied to the lens accommodating concave portion to accommodate the lens, and then a flexible member is covered on the surface of the lens, and the adhesive is applied while applying pressure to the lens from above the flexible member. It is characterized by solidifying and fixing the lens.

In the lens holding method according to the present invention, when pressure is applied through the flexible member,
It is characterized in that vibration is applied to the holding member.

Further, in the lens holding method according to the present invention, the holding member is heated to a predetermined temperature before applying the adhesive to the holding member.

The lens holding method according to the present invention is characterized in that the holding member is air-cooled until the adhesive is solidified.

The lens holding device according to the present invention is
In a device for holding the lens in a lens holding member for lens processing, in which a housing portion for fixing the lens is formed on an outer peripheral surface formed of a curved surface, in a processed surface of the lens housed in the housing portion of the lens holding member. A flexible member to cover,
It is characterized by comprising a pressurizing means for applying pressure to the lens from above the flexible member, and a vibration generating means for applying vibration to the lens holding member.

Further, in the lens holding device according to the present invention, the receiving member of the holding member for holding a plurality of the lens holding members in series and the pressing force from the pressing means are transmitted to the plurality of lens holding members. It is characterized by further comprising a pressurizing member.

Further, the lens holding device according to the present invention is characterized by further comprising a cooling means for cooling the lens.

The lens holding method according to the present invention is
In the method of holding the lens to be held in a holding member which holds the lens to be processed and is processed by a polishing / grinding means, an adhesive is applied to a holding position provided in a housing portion of the holding member for housing the lens, and the lens is mounted. It is characterized in that the lens is fixed by pressing the lens while applying vibration to the holding member to solidify the adhesive.

The lens processing method according to the present invention is
A lens is placed in an accommodation part for accommodating the lens, an adhesive is put between the lens and the accommodation part, a flexible member is covered on the surface of the lens, and the lens is accommodated in the accommodation part while applying vibration to the lens. It is characterized in that the surface of the lens is fixed and the surface of the lens is processed by polishing / grinding means.

[0019]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

(First Embodiment) First, a first embodiment of a lens attaching device for a recess tray according to the present invention will be described.

FIG. 1 is an explanatory view of a lens attaching device for a recess tray of this embodiment, in which a vibrating table 5 is arranged on a base 13, and a recess tray 7 is provided on the vibrating table 5.
A cylindrical recess tray receiver 6 having an inner diameter portion 6a into which the shaft portion 8 is detachably fitted is placed.

The present embodiment is of a type in which the recess tray receiver 6 removably supports one recess tray 7,
Corresponding to this, the lens W placed on the adhesive 9 (see FIG. 3) applied to the step portion which becomes the reference surface S of the positioning recess 7a of the recess dish 7 is brought into contact with the entire spherical surface of the lens. The flexible member 4 having such a deformable contact surface 4a and the pressing means for pressing the lens W via the flexible member 4 are configured as follows.

The pressurizing means is a support member 12 extending from the upper end of a column 11 standing on the base 13 in the vicinity of the vibrating table 5 so that the free end side reaches the upper part of the vibrating table 5.
A rod 1a having one end connected to a pressure cylinder 1 attached to a pressure cylinder 1 and a piston (not shown) disposed in the pressure cylinder 1 and a pressure head 2 integrally provided at the other end. And a holder 3 for holding the flexible member 4 by introducing a pressurized fluid into the pressure cylinder 1 in a direction in which the rod 1a is projected together with the piston.
The pressure head 2 is brought into contact with the contact portion 3b protruding from the bottom wall of the cylindrical portion 3a so that the lens W can be pressed through the flexible member 4.

On the other hand, the flexible member 4 is made of a flexible material such as rubber and is fitted and inserted into the cylindrical portion 3a of the holder 3, and the contact surface 4a contacting the lens W is shown in FIG. (A), it has a concave spherical shape having a radius of curvature r2 smaller than the radius of curvature r1 of the convex spherical surface of the lens W. Therefore, the contact surface 4a of the flexible member 4 is deformed as shown in FIG. 2B when the lens W placed on the adhesive applied to the reference surface S is pressed, and It goes around the peripheral edge of W, and the spherical surface of the lens W is the contact surface 4
It will be in the state of being immersed in a. That is, the flexible member 4
It is provided with a deformable contact surface 4a so as to contact the entire spherical surface of the lens W.

Incidentally, the radius of curvature r1 of the spherical surface of the lens W
On the other hand, the radius of curvature r2 of the contact surface 4a of the flexible member 4 is
It is reduced by about 0.3 to 0.5 mm.

The effect obtained by making the radius of curvature r2 of the contact surface 4a of the flexible member 4 smaller than the radius of curvature r1 of the spherical surface of the lens W will be described in more detail.

For example, as shown in FIGS. 4 and 5, let us consider a case where the radius of curvature r2 of the contact surface 4a of the flexible member 4 is slightly larger than the radius of curvature r1 of the spherical surface of the lens W. When such a flexible member 4 is put on the lens W as shown in FIG. 6, the end portion Wa on the inner peripheral side of the lens W is firmly pressed by the flexible member 4, whereas the end portion Wb on the outer peripheral side is held. Becomes weaker and the end Wb is lifted from the recess plate 7 as indicated by reference numeral 70.
In such a state, the lens W is attached to the reference surface S of the recess dish 7.
It cannot be attached so that it fits closely to.

On the other hand, when the radius of curvature r2 of the contact surface 4a of the flexible member 4 is made smaller than the radius of curvature r1 of the spherical surface of the lens W as in the present embodiment shown in FIGS. , As shown in FIG.
When the outer peripheral portion Wb of the lens W is pressed and the flexible member 4 is further pressed against the recess tray 7, the outer peripheral portion Wb is embedded in the flexible member 4 as shown by reference numeral 71 in FIG. Wa is also firmly pressed by the flexible member 4. As a result, the entire circumference of the lens W is reliably pressed against the recess dish 7, and the lens W is held in the recess dish 7
It becomes possible to stick it to the reference surface S of (1) in close contact with it.

Next, the steps of the method of attaching the lens to the recess plate using the lens attaching device for the recess plate of the first embodiment described above will be described.

The recess dish 7 is heated to a predetermined temperature in advance.

After the above, as shown in FIG. 3A, the adhesive 9 is applied on the reference surface S of the recess plate 7 and at least in the vicinity thereof.

After the above, the lens W is placed on the adhesive 9, and then the recess dish 7 on which the lens W is placed is inserted into the inner diameter portion 6a of the recess dish receiver 6 by the shaft portion 8 thereof. (See Fig. 2).

After the above, the contact surface 4a of the flexible member 4 held by the holder 3 is placed on the lens W placed on the recess tray 7 in a state of abutting.

After the above, by activating the pressure cylinder 1, the pressure head 2 is brought into contact with the contact portion 3b of the holder 3, and the lens W is directed toward the recess tray 7 through the flexible member 4. The pressure is applied, and at the same time, the vibrating table 5 is activated to vibrate the lens W together with the recess plate 7 in the arrow X direction shown in FIG.

In this step, the contact surface 4a of the flexible member 4 which is in contact with the spherical surface of the lens W is deformed by the pressing force and wraps around the peripheral edge of the lens W as described above, and the spherical surface of the lens W contacts. The contact surface 4a is in a state in which the contact surface 4a is difficult to be inserted, and the contact surface 4a is in contact with the entire spherical surface of the lens W. At the same time, since the lens W is vibrated in the direction of the arrow X by the vibrating table 5, the adhesive 9 between the reference surface S and the lens W is removed and moved around the reference surface S. As shown in (b), the lens W is brought into complete contact with the reference surface S. Note that when vibration is applied by the vibrating table 5, the flexibility member 4 also vibrates following the vibration of the recess tray 7 due to the elasticity of the fluid in the pressure cylinder 1, so that the contact surface 4a of the flexibility member is It does not leave the surface of the lens W.

After the above, the air-cooling fan 10 is activated to blow an air flow toward the recess plate 7 to cool the adhesive 9 so that the adhesive 9 is cooled and solidified.

Next, FIG. 10 shows the recess plate 7 as described above.
FIG. 12 is a perspective view showing a polishing device for polishing the lens W attached to, and FIG. 11 is a side view of FIG. 10 viewed from the direction of arrow H.

10 and 11, the polishing device 20
0 is roughly divided into a base 202, a rotation drive mechanism 204 arranged at the bottom of the base 202 for rotating the recess tray 7 in a horizontal plane, and a rotation drive mechanism 204 arranged at the top of the base 202 with respect to the recess tray 7. And a swing drive mechanism 206 for swing-driving the polishing dish 208.

First, referring to FIGS. 10 and 11, the structure of the rotary drive mechanism 204 for the recess tray 7 will be described.
The rotary drive mechanism 204 includes the vertical shaft 2 that supports the recess tray 7.
10, a lower shaft 212 that is fixed to the upper end of the vertical shaft 210 to fix the recess tray 7 with a screw, and the vertical shaft 210 is a base 202.
Bearing 2 for rotatably supporting it in a horizontal plane
14, 216, a first friction disc 218 fixed to an intermediate portion of the vertical shaft 210, and a horizontal shaft 2 extending horizontally below the first friction disc 218.
20 and a second friction disc 222 fixed to the horizontal shaft 220 and in contact with the first friction disc 218 for transmitting the rotational force of the horizontal shaft 220 to the first friction disc 218, and rotating the horizontal shaft 220. And a motor 224 for driving. Horizontal axis 220
Is configured to be slid in the direction of arrow C by the lever 226.
As shown in FIG. 1, the first and second friction discs 2
18 and 222 are in contact with each other and the power of the motor 224 is transmitted to the vertical shaft 210, and the first and second friction disks 218 and 222 are separated from each other.
It is possible to switch between a state in which the power of 24 is not transmitted to the vertical shaft 210.

On the other hand, the swing drive mechanism 206 of the polishing dish 208
Is a drive rod 228 for swinging the polishing dish 208 in the direction of arrow B in FIG. 10, an arm 230 for supporting the drive rod 228, and a shaft 232 serving as an axis for rotating the arm 230 in the vertical direction. And a bearing 234 that rotatably supports one end of the shaft 232, and is also rotatably supported around the vertical axis in the arrow F direction, and the shaft 232.
Bearing 236 that rotatably supports the other end of the bearing 236 and that is also slidably supported in the arrow A direction, and a crank mechanism 23 for slidingly driving the bearing 236 in the arrow A direction.
8 is provided. The crank mechanism 238 has a vertical shaft 21.
It operates by receiving a driving force from the pulley 240 fixed to 0 via the belt 242 and rotating the rotating shaft 244. When the rotating shaft 244 is rotated, the crank mechanism 238 causes the bearing 236 to reciprocally slide in the direction of arrow A, and the shaft 232 swings about the bearing 234 in a horizontal plane. As a result, the arm 230 swings back and forth, and as a result, the drive rod 228 swings the polishing dish 208 in the direction of arrow B.

A nozzle 24 for injecting a polishing liquid onto the lens W is provided at a position beside the recess tray 7 on the base 202.
6 are arranged.

In the polishing apparatus 200 thus constructed, the motor 224 is rotated and the lever 226 is operated leftward in FIG. 10, whereby the first and second friction disks 218 and 222 come into contact with each other. hand,
The vertical shaft 210 is rotated via these friction disks, and the recess plate 7 is rotated in a horizontal plane. At the same time, the rotation of the vertical shaft 210 is also transmitted to the crank mechanism 238, and the drive rod 228 is driven to swing in the direction of arrow B,
The polishing dish 208 is also swung in the direction of arrow B. Further, the polishing liquid is jetted from the nozzle 246. By these operations, the lens W on the recess dish 7 is polished by the movement of the polishing dish 208 in the direction of the arrow B while rotating in the horizontal plane, and finished to a desired surface accuracy.

FIG. 12 is a perspective view showing a polishing dish 208 used in the above polishing apparatus. In FIG.
(A) shows a polishing dish for grinding the lens W, which is formed on the inner surface of the cup-shaped polishing dish body 208a in a spherical shape having a radius of curvature equal to the completed shape of the lens W. It is a diamond pellet attached. Further, (b) shows a polishing dish for polishing the lens W, and a cup-shaped polishing dish body 208.
Polyurethane formed in a spherical shape having a radius of curvature equal to the completed shape of the lens W is attached to the inner surface of a.

Next, a specific example in which the lens is attached by using the method of attaching the lens to the recess dish of the present embodiment and the lens is polished will be described.

FIG. 13 shows the shape of the lens to be polished. As shown in the figure, the diameter is 51.0 m.
m, the radius of curvature of the surface to be polished is R55.56 mm, the radius of curvature of the opposite surface is 44.57 mm, and the thickness of the central portion is 3 m
It is a meniscus lens of m.

FIG. 14 is a view showing a concrete shape of the recess plate 7 for fixing the lens. The recess plate 7 has a recess 7a having a diameter φ51.0 for accommodating the lens.
Is formed, and a reference surface S having a width of 2.5 mm for attaching a lens is formed in the recess 7a.

The lens W shown in FIG. 13 is attached to the reference surface S of the recess 7a of the recess plate 7 by the device shown in FIG. 1 by the lens attaching method of the present embodiment already described. It was The adhesive used at this time was a mixture of pine resin and tar, and the recess plate 7 was placed at 80 to 120 ° C.
To soften. The flexible member 4 for pressing the lens was made of silicon rubber having a hardness of 20 to 40 and a thickness of 10 mm or more, and the lens was pressed against the recess dish 7 with a force of 20 to 70 kgf. Further, vibration of 30 to 70 Hz was applied to the recess dish 7 by the vibrating table 5. Furthermore, after attaching the lens, start the fan 10 for air cooling,
The recess dish 7 was cooled over 10 to 20 minutes.

When the lens W attached to the recess plate 7 in this way is polished by the polishing apparatus shown in FIG.
The center thickness accuracy of the lens as shown in FIG. 15 was obtained. Referring to FIG. 15, when the lens attaching method of the present embodiment is applied, the center wall thicknesses of the processed 130 lenses are all within the tolerance of ± 0.05 mm. In the case of manual attachment as described above, about 10% of the lenses W were lifted from the reference surface of the recess dish 7 and deviated from the permissible tolerance in the direction in which the thickness of the lens became thinner.

As described above, it was confirmed that by sticking the lens to the recess dish by the method of this embodiment, the lens can be surely stuck to the reference surface of the recess dish in close contact.

Next, a modified example of the recess plate will be described.

FIG. 16 shows a modified example of the recess plate.
Is a schematic top view, and (b) is a schematic front view.

In this modified example, instead of the positioning recess 7a having the step portion of the recess dish 7 shown in FIG. 3, as shown in FIG. 16, the hemispherical peripheral surface of the recess dish 27 having the shaft portion 28 is provided. 4 hemispherical positioning recesses 27a are formed at a distance from each other, and the peripheral edge of the opening of each positioning recess 27a serves as the reference plane S1.

This modification is convenient to use when attaching the lens W1 having at least one surface which is a hemispherical spherical surface. The rest is the same as the recess plate 7 shown in FIG.

Next, FIG. 17 and FIG. 18 are views showing the recess plate 7'when polishing a concave lens.
The recess dish 7'for a concave lens is formed in a cup shape, and a lens positioning recess is formed on the inner peripheral surface thereof. Also, a flexible member 4'for pressing the lens
Are formed in a convex spherical shape. The radius of curvature R4 of the surface of the flexible member is opposite to that of the convex lens,
It is set to be larger than the radius of curvature R3 of the surface of the concave lens. As a result, the concave lens is pressed in close contact with the reference surface of the recess plate 7 ′ by the action already described in the example of the convex lens. The polishing apparatus for polishing a concave lens is exactly the same as that shown in FIG. 10, except that the polishing surface of the polishing dish is a convex spherical surface.

(Second Embodiment) Next, a second embodiment of the device for attaching a lens to a recess dish of the present invention will be described.

FIGS. 19A and 19B show a device for attaching a lens to a recess plate according to this embodiment. FIG. 19A is a schematic top view, FIG. 19B is a schematic sectional view taken along the line AA of FIG. FIG. 4A is a schematic cross-sectional view taken along the line BB of FIG.

A box-shaped recess tray receiver 56 is mounted on the vibrating table 55.
Is mounted on the upper surface plate 56a of the recess tray receiver 56 and the through hole 56b into which the shaft portion 58 of the recess tray 57 is inserted.
Are spaced apart from each other and are formed in two rows of five in the longitudinal direction.

As in the first embodiment shown in FIG. 1, the pressurizing means has one end connected to a pressurizing cylinder (not shown) and a piston arranged in the pressurizing cylinder, and the other end The rod 51a is integrally provided with the pressure head 52 on the end side.

In this embodiment, the recess tray receiver 56 has a total of 1
A holder 53 that supports zero recess dishes 57 and correspondingly holds a flexible member 54 for pressing a lens (not shown) placed on each recess dish 57 is provided. Two at a distance from each other in the longitudinal direction 2
The pressure plates 53a are arranged in rows.

The shaft portion 53b of each holder 53 is axially movably fitted into a guide hole 53e formed in a portion of the pressing plate 53a corresponding to each recess plate 57, and the bottom wall of the holder 53 is inserted. And a spring 53d provided between the lower surface of the pressure plate 53a and the lower surface of the pressure plate 53a are constantly urged to project toward the lower surface of the pressure plate 53a.

Although not shown in FIG. 19, the recess plate 57 has reference surfaces similar to the positioning recesses 7a and 27a having the reference surfaces S and S1 shown in FIGS. 3 and 16, respectively. A positioning recess having is provided.

In the present embodiment, the recess tray receiver 56 supports a total of ten recess trays 57 arranged in two rows of five in the longitudinal direction, and the pressurizing plate 53a corresponds to the recess tray 57 in the longitudinal direction. The holder 53 has a total of ten flexible members 54 arranged in two rows of five, but the number of these holders can be changed as necessary. Also,
It goes without saying that the number of fans for air cooling (not shown) can be changed to any number as necessary.

Next, steps of a lens attaching method using the recess tray lens attaching apparatus shown in FIG. 19 will be described.

Each recess pan 57 is heated in advance to a predetermined temperature.

After the above, an adhesive is applied near the reference surface of the positioning recess of each recess 57.

After the above, each lens is placed on the adhesive of each recess dish 57, and then the recess dish 57 is placed.
By inserting the shaft portion 58 into the through hole 56a of the recess tray receiver 56, each recess tray 57 on which the lens is mounted is mounted.

After the above, the flexible member 54 of each holder 53 is placed in contact with the lens placed on the adhesive of each recess dish 57.

After the above, the pressure cylinder is activated to cause the rod 51a to project so that the pressure head 52 is brought into contact with the contact portion 53c of the pressure plate 53a,
The lens is pressed through the flexible member 54 held by each holder 53, and at the same time, the vibrating table 55 is activated to move the lens together with each recess tray 57 through the recess tray receiver 56, as shown in FIG. Vibrate in the direction indicated by arrow X.

In this step, since each holder 53 is constantly urged by the spring 53d so as to project to the lower surface side of the pressure plate 53a as described above, the spring 53d is slid when the lens is pressed. The pressing force is uniformly applied to the lens placed on each recess pan 57.

After the above, each fan is activated to blow an air flow for cooling toward the recess pan 57 and the holder 53 to air-cool, and the adhesive is cooled and solidified.

As described above, in the above embodiment, the lens is placed on the adhesive provided on the reference surface of the recess dish, and the deformable contact is made so as to contact the entire spherical surface of the lens. Since the recess dish is vibrated at the same time as pressing through the flexible member having a surface, the adhesive agent interposed between the reference surface and the lens is uniformly removed and moved to the periphery of the reference surface, and the lens and the reference surface are moved. It can be attached in a completely adhered state without a gap between them.

The present invention can be applied to modifications or variations of the above embodiments without departing from the spirit of the invention.

[0073]

Since the present invention is configured as described above, it has the following effects.

Since the lens can be adhered to the reference surface of the recess dish in a state in which it is in complete contact, the dimensional accuracy of the lens can be processed with high precision.

Further, a mistake in sticking by the operator is eliminated, and the dimensional accuracy of the lens can be processed with high accuracy.

Further, since a plurality of lenses can be attached at the same time, the productivity is remarkably improved.

[0077]

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of a lens attaching device for a recess tray according to the present invention.

2A and 2B show a relationship between a flexible member and a lens in the lens sticking device shown in FIG. 1, FIG. 2A is a schematic sectional view showing a state before pressing, and FIG. 2B is a schematic sectional view showing a state at the time of pressing. It is a figure.

3 shows the relationship between the flexible member, the lens, and the reference surface provided with the adhesive in the lens sticking apparatus shown in FIG. 1, and FIG. 3 (a) is a schematic view showing a state in which the lens is not completely in contact with the reference surface. Partial cross-sectional view, (b) is a schematic partial cross-sectional view showing a state where the lens is completely in contact with the reference surface.

FIG. 4 is a diagram showing a radius of curvature of a surface of a flexible member.

FIG. 5 is a diagram showing a radius of curvature of a lens surface.

FIG. 6 is a diagram showing a state where a lens is floating.

FIG. 7 is a diagram showing a radius of curvature of a surface of a flexible member.

FIG. 8 is a diagram showing a radius of curvature of a lens surface.

FIG. 9 is a diagram showing a state in which the lens is in close contact with the reference surface.

FIG. 10 is a diagram showing a configuration of a lens polishing device.

FIG. 11 is a diagram of FIG. 10 viewed from a direction of an arrow H.

FIG. 12 is a diagram showing a configuration of a polishing dish.

FIG. 13 is a diagram showing a detailed shape of a lens.

FIG. 14 is a diagram showing a state in which the lens shown in FIG. 13 is attached to a recess tray.

FIG. 15 is a diagram showing a variation in the thickness of the lens when the polishing process is performed.

16A and 16B show a modified example of the recess plate, FIG. 16A is a schematic top view, and FIG. 16B is a schematic front view.

FIG. 17 is a diagram showing the shapes of a recess dish and a flexible member when processing a concave lens.

FIG. 18 is a view showing a state in which a flexible member is pressed against a recess dish when processing a concave lens.

FIG. 19 shows a second embodiment of a lens attaching device for a recess tray according to the present invention, (a) is a schematic top view,
(B) is a schematic cross section taken along the line AA of (a), and (c) is a schematic cross section taken along the line BB of (a).

20A and 20B are diagrams showing a conventional method of attaching a lens to a recess dish, where FIG. 20A is an explanatory diagram showing a correctly attached state, and FIG. 20B is an explanatory diagram showing a state of being attached at an angle.

FIG. 21 is an explanatory diagram of a lens processed by using the conventional lens attaching method for the recess dish shown in FIG. 20.

[Explanation of symbols]

 1 Pressurizing Cylinder 1a, 51a Rod 2,52 Pressurizing Head 3,53 Holder 3a Cylinder 3b, 53c Abutting Part 4,54 Flexible Member 5,55 Vibrating Table 6,56 Recess Plate Receiver 7,57 Recess Plate 8 , 27, 53c, 58 Shafts 8a, 27a Positioning recess 10 Cooling fan 11 Support 12 Support member 53a Pressure plate 53d Spring 53e Guide hole

Claims (13)

[Claims] 1. A method for holding a lens to be processed to a holding member, which holds and polishes a lens by a polishing means, wherein an adhesive is applied to a reference holding position provided in a holding portion for holding the lens of the holding member. Then, the lens is mounted, and thereafter, the surface to be processed of the lens is pressed by a flexible member having a contact surface close to the surface to be processed so that the lens is fixed by solidification of the adhesive. A lens holding method characterized by the above. 2. The lens holding method according to claim 1, wherein vibration is applied to the lens holding member when the lens is pressed by the flexible member. 3. The lens holding method according to claim 1, wherein the holding member is heated to a predetermined temperature before the adhesive is applied to the holding member. 4. The lens holding method according to claim 3, wherein the holding member is air-cooled until the adhesive is solidified. 5. A method of holding a lens to be processed and holding the lens on a holding member which is polished by a polishing means, wherein a lens having a radius smaller than a radius of curvature of a processed surface of the lens is provided on an outer peripheral surface of the holding member. An accommodation recess is formed, an adhesive is applied to the lens accommodation recess to accommodate the lens, and then a flexible member is covered on the surface of the lens, and pressure is applied to the lens from above the flexible member. A lens holding method, characterized in that the adhesive is solidified while fixing the lens. 6. The lens holding method according to claim 5, wherein when the pressure is applied via the flexible member, the holding member is vibrated. 7. The lens holding method according to claim 5, wherein the holding member is heated to a predetermined temperature before the adhesive is applied to the holding member. 8. The lens holding method according to claim 7, wherein the holding member is air-cooled until the adhesive is solidified. 9. An apparatus for holding the lens in a lens holding member for lens processing, wherein the lens holding member for fixing the lens is formed on a curved outer peripheral surface, and the lens holding member is housed in the housing portion of the lens holding member. It is characterized by further comprising: a flexible member that covers the processed surface of the lens, a pressurizing unit that applies pressure to the lens from above the flexible member, and a vibration generating unit that applies vibration to the lens holding member. Lens holding device. 10. A holding member for holding a plurality of the lens holding members in series, and a pressure member for transmitting the pressure from the pressure means to the plurality of lens holding members. The lens holding device according to claim 9, wherein 11. The lens holding device according to claim 10, further comprising a cooling unit for cooling the lens. 12. A method of holding a lens to be processed by a holding member, which holds a lens to be processed by polishing / grinding means, wherein an adhesive is applied to a holding position provided in a housing portion of the holding member for housing the lens. The lens holding method is characterized in that the lens is mounted, the lens is mounted, and the lens is pressed while vibrating the holding member to fix the lens by solidifying the adhesive. 13. A lens is placed in an accommodation part for accommodating the lens, an adhesive is put between the lens and the accommodation part, a flexible member is covered on the surface of the lens, and the lens is vibrated while the lens is vibrated. Is fixed to the accommodating portion, the fixed state is maintained, and the surface of the lens is processed by polishing / grinding means.