Holding jig and method for manufacturing optical element

Abstract

Provided are a holding jig (1) for holding an optical element and a technique related thereto, the holding jig (1) being provided with: a base part; a plurality of holding mechanisms that hold the peripheral edge portion of the optical element; a biasing member that biases a first holding mechanism (15) of the plurality of holding mechanisms so as to rotate the first holding mechanism (15) toward the side surface of the optical element to be held; and a lever (90) that can be rotated in a direction within a plane parallel to a plane including the rotation direction of the first holding mechanism (15), and that reduces the biasing force of the biasing member on the optical element by rotating the lever (90) to fix the first holding mechanism (15).

Description

Technical Field

[0001] The present invention relates to a holding jig and a method for manufacturing an optical element. Background Art

[0002] As a method for forming a hard coating film, an antireflection film, etc. on a base material of an eyeglass lens, a method of forming a film by immersing a lens base material L in a coating liquid for film formation and drying the coating liquid applied to the surface of the lens base material L is widely used. When immersing in such a coating liquid, the lens base material L is immersed in the coating liquid while the outer edge portion of the lens base material L is held by a lens holding member. Then, after lifting the lens base material L from the coating liquid, a heat treatment is performed while holding the lens base material L by the lens holding member to dry the coating liquid or perform an annealing treatment of the coating film.

[0003] As a lens holding member for holding the lens base material L, for example, Patent Document 1 describes a holding jig for holding an optical element, which is characterized by including: a base; at least three holding portions for holding the peripheral portion of the optical element; a first arm on which a first holding portion among at least three holding portions is mounted and which is rotatably provided about an axis on the base; a biasing member for biasing the first arm in a first rotation direction so that the first holding portion faces the optical element; and a fixing mechanism configured to fix the rotation of the first arm. Contents not particularly described in this specification can be cited from those described in Patent Document 1.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2022-141091 Summary of the Invention

[0007] Technical Problem to be Solved by the Invention

[0008] In Patent Document 1, as a fixing mechanism configured to fix the rotation of the first arm, a wing bolt is exemplified. It is described that the wing bolt includes a cylindrical threaded portion having a thread formed on the outer peripheral surface and a pair of operation blades connected to the threaded portion. Regarding this, the present inventors have obtained the following insights.

[0009] When performing a film formation process including immersion while holding an optical element in the holding jig described in Patent Document 1. At this time, the working efficiency of performing a film formation process including immersion on only one such holding jig is poor. It is efficient to perform a film formation process on a plurality of holding jigs in a state of holding optical elements together.

[0010] On the other hand, when hanging the holding jig described in Patent Document 1 on a hanging member and in Patent Document 1'sFigure 3 When there are multiple holding fixtures arranged in the left and right directions of the paper, even if the operator wants to grab the operating blade of the butterfly bolt, his hand will touch the adjacent holding fixtures, leaving no space for operation. In order to ensure space for operation, it is necessary to ensure a large space between the holding fixtures. In this case, the number of holding fixtures that can be film-formed at the same time is reduced, and the working efficiency is deteriorated.

[0011] Even when only one holding jig described in Patent Document 1 is used, the operator needs to grip the butterfly bolt to operate the blade. If this operation can be facilitated, the efficiency of the operation of fixing the rotation of the first arm can be improved, and the efficiency of the film forming process can also be improved.

[0012] In one embodiment of the present invention, an object is to provide a technology for improving the working efficiency of a film forming process.

[0013] Technical solutions for solving technical problems

[0014] The first aspect of the present invention is a holding fixture for holding an optical element, wherein the fixture comprises: a base; a plurality of holding mechanisms for holding the peripheral portion of the optical element; a force-applying component for applying force to a first holding mechanism among the plurality of holding mechanisms in such a manner as to rotate the first holding mechanism toward the side of the optical element to be held; and a rod capable of rotating in a direction within a plane parallel to a plane including the rotation direction of the first holding mechanism, wherein the first holding mechanism is fixed by rotating the rod, thereby reducing the force exerted by the force-applying component on the optical element.

[0015] The second aspect of the present invention is a retaining clamp according to the first aspect, wherein there is also a threaded component, which at least passes through the base, the first retaining mechanism and the rod, and is threaded with at least any one of the rod, the base and the first retaining mechanism. By rotating the rod, the first retaining mechanism moves relative to the threaded component in any direction in the axial direction of the rotation, and is pressed and fixed to a component adjacent to the retaining mechanism.

[0016] A third aspect of the present invention is the holding jig according to the second aspect, wherein when at least the first holding mechanism, the urging member, the rod, and the screw member are set as a set, a plurality of the sets are provided which are arranged in the axial direction of the rotation.

[0017] The fourth aspect of the present invention is a holding fixture according to the first aspect, wherein the plurality of holding mechanisms include: a second holding mechanism which clamps the optical element to be held and is arranged opposite to the first holding mechanism; and a third holding mechanism which supports the optical element to be held from below.

[0018] According to the holding jig described in the fourth aspect, a fifth aspect of the present invention is characterized in that the second holding mechanism is fixed to the base.

[0019] According to the holding jig described in the fourth aspect, a sixth aspect of the present invention is characterized in that the third holding mechanism is a member that is fixed to the base and is long in the axial direction of the rotation, and is a long member provided with a plurality of grooves for sandwiching the optical element to be held in the axial direction of the rotation.

[0020] According to the holding jig described in the sixth aspect, a seventh aspect of the present invention is characterized in that the third holding mechanism is a plurality of the long members arranged in the horizontal direction in the plane including the rotation direction, and in each long member, the central positions of the grooves in the axial direction of the rotation are the same.

[0021] According to the holding jig described in the sixth aspect, an eighth aspect of the present invention is characterized in that the long member is a plate-like member having a shape of at least one of a bent line and a curve when viewed from the horizontal direction in the plane including the rotation direction.

[0022] According to the holding jig described in the second aspect, a ninth aspect of the present invention is characterized in that the head of the screwing member and the rod are located on positions separated by the first holding mechanism, and by rotating the rod, in the axial direction of the rotation, the first holding mechanism relatively moves in either direction with respect to the screwing member, and the pressing object when the first holding mechanism is pressed is the head of the screwing member or a member that is penetrated by the screwing member and disposed on either side of the first holding mechanism.

[0023] According to the holding jig described in the ninth aspect, a tenth aspect of the present invention is characterized in that the biasing member is a coil spring, the screwing member also penetrates the biasing member, and in the axial direction of the rotation, they are arranged in the order of the head of the screwing member, the first holding mechanism, the biasing member, the base, and the rod.

[0024] According to the holding jig described in the tenth aspect, an eleventh aspect of the present invention is characterized in that a spacer is further provided between the first holding mechanism and the base, and the spacer has a size that can be accommodated in the spiral portion of the coil spring, and when the rod is rotated, the spacer directly contacts the first holding mechanism to fix the first holding mechanism.

[0025] According to the holding jig of the twelfth aspect of the present invention based on the second aspect, the first holding mechanism is fixed by rotating the rod in the same direction as the direction in which the first holding mechanism rotates toward the side of the optical element, and the first holding mechanism is fixed in a state where the first holding mechanism rotates in the opposite direction by rotating the rod in the direction opposite to the direction in which the first holding mechanism rotates toward the side of the optical element.

[0026] A method for manufacturing an optical element according to the thirteenth aspect of the present invention uses the holding jig according to any one of the first to twelfth aspects to hold the optical element and form a film on the optical element, and includes: an optical element holding step of disposing the optical element in the holding jig, applying a force in a manner such that the first holding mechanism rotates toward the side of the optical element, and holding the peripheral portion of the optical element using the plurality of holding mechanisms; a first holding mechanism fixing step of fixing the first holding mechanism by rotating the rod after the optical element holding step; an impregnation step of impregnating the optical element together with the holding jig into a coating liquid after the first holding mechanism fixing step; a lifting step of lifting the optical element together with the holding jig out of the coating liquid; and a curing step of heating and curing the coating liquid applied to the optical element.

[0027] Advantages of the Invention

[0028] In an embodiment of the present invention, the working efficiency of the film forming process is improved. Description of the Drawings

[0029] Figure 1 It is a schematic front view when observing the holding jig of one aspect of the present invention from the -Z direction to the +Z direction.

[0030] Figure 2 It is a schematic exploded side view when observing the components through which the screwing member penetrates the holding jig of one aspect of the present invention from the +X direction to the -X direction.

[0031] Figure 3 It is observed from the +X direction to the -X direction Figure 2 A schematic side view of the state where two sets of holding jig components are arranged on one of the connecting members (a part of the base).

[0032] Figure 4 It is a schematic partial side view when observing the rotation of the rod of the holding jig of one aspect of the present invention from the -Z direction toward the +Z direction. The curved claw (the second one) is hidden behind the curved claw (the first one) in the plane of the paper.

[0033] Figure 5It is a flowchart of a method for manufacturing spectacle lenses using a holding jig according to an embodiment of the present invention. Detailed Embodiment

[0034] Hereinafter, an embodiment of the present invention will be described. The following description based on the drawings is an example, and the present invention is not limited to the example embodiment.

[0035] In this specification, the axial direction of rotation when the first holding mechanism 15 among a plurality of holding mechanisms is rotated toward the side surface of the optical element is defined as the Z direction. Figure 1 The double-dashed line indicates the rotation trajectory of the first arm 10.

[0036] The plane including the rotation direction of the first arm 10 is defined as the XY plane, the horizontal direction is defined as the X direction, and the vertical direction (up and down direction) is defined as the Y direction.

[0037] In the horizontal direction, the direction away from the second arm 20 as viewed from the arranged optical element is defined as the +X direction, and the direction approaching the second arm 20 is defined as the -X direction.

[0038] The upward direction is defined as the +Y direction, and the downward direction is defined as the -Y direction.

[0039] In the Z direction, the direction close to the rod 90 is defined as the +Z direction, and the direction close to the head 42B of the screwing member (e.g., bolt 42) is defined as the -Z direction. In Figure 1 it, the direction from the paper surface toward the inside of the paper surface is the +Z direction, and the direction from the paper surface toward the front side of the paper surface is the -Z direction.

[0040] In this specification, "~" means equal to or more than a specified value and equal to or less than the specified value.

[0041] <Optical Element>

[0042] The holding jig 1 according to an embodiment of the present invention is used to hold an optical element when a functional film is formed on the surface of the optical element by coating treatment through impregnating the optical element in a treatment liquid as described later. As the optical element, for example, a lens substrate L used for spectacle lenses can be cited. In an embodiment of the present invention, the case where the optical element is the lens substrate L is exemplified. However, as the optical element, in addition to the lens substrate L, it can also be a lens arranged in an imaging device such as a camera.

[0043] <Holding Jig 1>

[0044] Figure 1 It is a schematic front view when observing the holding jig 1 according to an embodiment of the present invention from the -Z direction to the +Z direction.

[0045] Figure 2It is a schematic exploded side view when observing each component through which a screwing component penetrates in the holding jig 1 of one embodiment of the present invention from the +X direction to the -X direction.

[0046] Figure 3 It is when observing from the +X direction to the -X direction in Figure 2 a state where two sets of holding jig components 1A are arranged in one connecting component 51 (a part of the base 50), and it is a schematic side view.

[0047] Figure 4 It is a schematic partial side view when observing the rotation situation of the rod 90 of the holding jig 1 of one embodiment of the present invention from the -Z direction to the +Z direction. The bending claw (the second) 32B is hidden inside the paper surface of the bending claw (the first) 32A.

[0048] Figure 5 It is a flowchart showing a manufacturing method of an eyeglass lens using the holding jig 1 of one embodiment of the present invention.

[0049] The structure of the holding jig 1 of one embodiment of the present invention is as follows.

[0050] "A holding jig 1 for holding an optical element, comprising: a base; a plurality of holding mechanisms for holding the peripheral portion of the optical element; a biasing member for biasing the first holding mechanism 15 among the plurality of holding mechanisms to rotate toward the side surface of the optical element to be held; a rod 90 capable of rotating in a direction in a plane parallel to the plane including the rotation direction of the first holding mechanism 15, and fixing the first holding mechanism 15 by rotating the rod 90, thereby reducing the acting force of the biasing member on the optical element."

[0051] In Figure 3 the plane including the rotation direction of the first holding mechanism 15 (specifically, the first arm 10) is the reference numeral XY1 (dashed line), and the plane parallel to the plane including the rotation direction of the first holding mechanism 15 and including the rotation direction of the rod 90 is the reference numeral XY2 (dotted-dashed line). In one embodiment of the present invention, either plane is the XY plane.

[0052] In the holding jig 1 described in Patent Document 1 using a butterfly bolt, an operating space in the Z direction of the holding jig 1 is required. On the other hand, in the holding jig 1 of one embodiment of the present invention, the rod 90 is used as a fixing mechanism for the first holding mechanism 15. If the rod 90 can rotate in a direction in a plane parallel to the plane including the rotation direction of the first holding mechanism 15, the operator can reach out from the +X direction (or in the XY plane, the same below) of the holding jig 1 to operate the rod 90. Moreover, even if the operator does not direct the whole hand toward the rod 90, as long as the rod 90 is operated with one fingertip, the operation efficiency is improved.

[0053] As a result, it is not necessary to ensure a large space between the holding jigs 1 for retention as in the case of using wing bolts, nor is it necessary to reduce the number of holding jigs 1 that can perform the film forming process together, and the working efficiency is improved.

[0054] Furthermore, by the rotation operation of the rod 90 after the lens substrate L is installed, the first holding mechanism moves relative to the screwed component and comes into contact (is pressed) with the adjacent component, and is restricted at this position. Therefore, the acting force of the spring applied to the first holding mechanism is reduced or disappears, and the acting force or pressing force substantially applied to the lens substrate L is substantially zero. Specifically, the lens substrate L is held in a state where no acting force is substantially applied to the lens substrate L. The details of "substantially" will be described later.

[0055] Hereinafter, the detailed structure (preferred example or modified example) of the holding jig 1 according to one embodiment of the present invention will be described.

[0056] The holding jig 1 according to one embodiment of the present invention mainly has the following structure.

[0057] - A base 50 (including a connecting member 51) - A first arm 10 constituting the first holding mechanism 15, and a first claw 12 serving as a first holding portion that abuts against the optical element - A second arm 20 of the second holding mechanism 25, and a second claw 22 serving as a second holding portion that abuts against the optical element - Two rows of bent claws 32A, 32B (the first and second third claws) serving as the third holding portion of the third holding mechanism 35 - A helical spring 60 serving as a biasing member - A rod 90 - A bolt 42 (or a screw, a screw, generally a screwed component) that penetrates at least the base 50, the first holding mechanism 15, and the rod 90 and is screwed with at least any one of the rod 90, the base 50, and the first holding mechanism 15

[0058] Unless otherwise specified, each component constituting the holding jig 1 is made of a heat-resistant metal such as stainless steel.

[0059] The base 50 is a part that holds the first arm 10, the second arm 20, and the two rows of bent claws 32A, 32B, and is a part where the holding jig 1 can be placed on the ground. A part of the base is the connecting member 51. The connecting member 51 is a member for connecting two sets of holding jig components 1A arranged in the Z direction to the connecting member 51 at the same time when at least the first holding mechanism 15, the helical spring 60 serving as a biasing member, the rod 90, and the bolt 42 serving as a screwed component are held as a set of holding jig components 1A. The part of the base 50 other than the connecting member 51 is also referred to as the base body 53.

[0060] The connecting member 51 has: a flat plate 51A for connecting the base body, which is a surface inclined upward in the +X direction on the surface parallel to the YZ plane and has a long dimension in the Z direction; and a fitting flat plate 51B, which is a flat plate provided at the end on the +Z direction side of the flat plate and is parallel to the XY plane.

[0061] Two screw holes 51A1 and 51A2 are arranged and provided in the base body connecting flat plate 51A in the Z direction. Similarly to the base body connecting flat plate 51A, screw holes are also provided on the surface of the base body 53 inclined in the +X direction, and connecting screws are passed through these screw holes for screwing. Thus, the connecting member 51 is fixed to the base body 53, and further, the holding jig member 1A mounted through the connecting member 51 is mounted to the base body 53. The manner of this mounting is not limited. For example, as Figure 1 shown, the base body 53 and the base body connecting flat plate 51A can also be connected via a square bar 54 by a bolt 55.

[0062] The fitting flat plate 51B can also be provided at the end on the -Z direction side of the base body connecting flat plate 51A. Also, a copy of the other set of the holding jig members 1A can be mounted to the fitting flat plate 51B at the end on the -Z direction side while maintaining the configuration relationship of each part within the holding jig member 1A. Thereby, the space between the holding jig members 1A can be reduced. Correspondingly, the number of holding jig members 1A that can be mounted to the holding jig 1 can be increased, and as a result, the working efficiency is further improved.

[0063] A through hole 52 penetrating between the front and back surfaces is formed in the fitting flat plate 51B.

[0064] The through hole 52 is circular. The circle has a diameter through which the threaded portion 42A of the bolt 42, which is a part of the arm fixing mechanism, can be inserted. Threads may not be provided in the through hole 52, and it may be only a through hole. The bolt 42 is inserted into the through hole 52. The head 42B of the bolt 42 is arranged on the -Z direction side.

[0065] In one aspect of the present invention, the threaded portion 42A of the bolt 42 as a screwing member penetrates at least the base 50 (specifically, the fitting flat plate 51B), the first holding mechanism 15, and the rod 90. Moreover, the threaded portion 42A of the bolt 42 penetrates at least the base 50, the first holding mechanism 15, and the rod 90, and is screwed with at least any one of the rod 90, the base 50, and the first holding mechanism 15. The threaded portion 42A may also penetrate the helical spring 60 as a biasing member.

[0066] In one embodiment of the present invention, the first holding mechanism 15 is screwed with the threaded portion 42A of the bolt 42, and the bolt 42 only penetrates the rod 90 and the base 50. The arm fixing mechanism for fixing the rotation of the first arm 10 has, in order from the right side of the drawing (from the -Z direction to the +Z direction): the bolt 42 as a screwing member, the head 42B of which is arranged in the -Z direction; the shaft member 44 as a spacer; the connecting member 51 as a part of the base 50; a pair of nuts 46A and 46B as double nuts; the rod 90; and the end nut 46C.

[0067] The bolt 42 includes a cylindrical threaded portion 42A having threads formed on the outer peripheral surface and a head 42B. A pair of nuts 46A, 46B and a terminal nut 46C are screwed into the threaded portion 42A. The nut 46B is disposed in the through hole 90A of the rod 90.

[0068] Furthermore, the head 42B of the bolt 42 as the screw member is arranged in the -Z direction. That is, in one embodiment of the present invention, the head 42B of the screw member and the rod 90 are located across the first holding mechanism 15 (specifically, the first arm 10). Furthermore, in one embodiment of the present invention, the first holding mechanism 15 is adjacent to and across the head 42B of the bolt and the shaft member 44.

[0069] If the rod 90 is rotated downward while the threaded portion 42A is in the right-handed state, the end nut 46C and the nut 46B in the through hole 90A also rotate together with the rod 90, and the nut 46A and the two nuts 46A and 46B also rotate accordingly. Then, the bolt 42 also rotates, so that the first holding mechanism 15 (specifically, the first arm 10) moves in the +Z direction relative to the bolt 42, and is pressed toward the shaft member 44 and fixed.

[0070] In addition, when the rod 90 is rotated upward, the first holding mechanism 15 moves in the -Z direction relative to the bolt 42 and is pressed by the bolt head 42B (or, if there is a component arranged between the bolt head 42B and the first arm 10, its adjacent component), thereby fixing the first holding mechanism 15.

[0071] On the other hand, when the threaded portion 42A is a left-hand thread, by rotating the rod 90 downward, the first holding mechanism 15 is pressed against the head 42B of the bolt (or the adjacent member), thereby fixing the first holding mechanism 15. In addition, by rotating the rod 90 upward, the first holding mechanism 15 is pressed against the adjacent shaft member 44, thereby fixing the first holding mechanism 15.

[0072] The adjacent member is not limited, and may be, for example, a nut or a spacer provided adjacent to the head 42B of the screw-engaging member.

[0073] The first arm 10 has a base end portion 10A extending in the lateral direction and a front end portion 10B extending obliquely downward from the front end of the base end portion 10A.

[0074] The base end portion 10A is formed of a plate parallel to the XY plane on the +X direction side of the torsion portion 10A1, and a circular threaded hole 10C having a diameter that can be screwed with the threaded portion 42A of the bolt 42 is formed at a position slightly closer to the +X direction side than the torsion portion 10A1. The base end portion 10A, which is a plate parallel to the XY plane, is twisted 90 degrees at the torsion portion 10A1. As a result, the base end portion 10A is formed of a plate parallel to the YZ plane at a position on the -X direction side of the torsion portion 10A1. The base end portion 10A is bent toward the +Y direction at a position slightly closer to the -X direction side than the torsion portion 10A1.

[0075] According to this structure, if a plate parallel to the YZ plane and extending in the +Y direction is pressed from the +X direction toward the -X direction, the first arm 10 can be separated from the lens substrate L. This means that, like the rod 90, no working space in the Z direction is required. That is, the holding of the lens substrate L, the reduction of the acting force caused by the rotation of the rod 90, and the operation of separating the first arm 10 from the lens substrate L (returning to the initial position before holding the lens substrate L) and removing the impregnated lens substrate L from the holding jig 1 can be performed in the XY plane, and no working space in the Z direction is required.

[0076] At the front end of the front end portion 10B, a first holding portion (first claw 12) for holding the lens substrate L is provided.

[0077] The first claw 12 is mounted with its base end portion 12A along the surface of the front end portion 10B of the first arm 10, and the front end portion 12B is bent toward the lens substrate L side with respect to the base end portion 12A. The edge of the front end portion 12B that abuts against the lens substrate L is formed in a V-shaped concave shape.

[0078] The second arm 20 is a rod-shaped member, and includes a base end portion 20A mounted on the base portion 50 and a front end portion 20B extending downward from the base end portion 20A.

[0079] The upper end portion of the base end portion 20A of the second arm 20 is connected and mounted to the base body 53 by a bolt 23.

[0080] The front end portion 20B is inclined toward the lens substrate L side with respect to the base end portion 20A. At the front end of the front end portion 20B, a second holding portion (second claw) 22 for holding the lens substrate L is provided.

[0081] The second claw 22 is disposed opposite to the first holding mechanism 15 (specifically, the first claw 12) with the lens substrate L to be held therebetween.

[0082] The second claw 22 is mounted such that the base end portion 22A is along the surface of the front end portion 20B of the second arm 20, and the front end portion 22B is bent toward the lens substrate L side with respect to the base end portion 22A. The edge of the front end of the front end portion 22B that abuts against the lens substrate L is formed in a V-shaped concave shape.

[0083] The third holding mechanism 35 is a bending claw 32A, 32B that supports the lens substrate L to be held from below. In one aspect of the present invention, the bending claw is a member that is fixed to the base body 53 and is long in the Z direction, and is a long member provided with a plurality (preferably three or more) of grooves that sandwich the lens substrate L to be held in the Z direction. Specifically, the third holding mechanism 35 refers to each groove that sandwiches the lens substrate L (for example, the groove 33A of the bending claw 32A).

[0084] When at least the first holding mechanism 15, the biasing member (coil spring 60), the rod 90, and the screwing member (bolt 42) are set as a set of holding jig members 1A, there are provided a plurality (preferably three or more) sets of holding jig members 1A arranged in the rotational axial direction. That is, when the lens substrates L are arranged in each group, each lens substrate L is inserted into each groove of the bending claw.

[0085] As described above, in the holding jig 1 of one aspect of the present invention, the rod 90 is used as the fixing mechanism of the first holding mechanism 15. Therefore, the operator can reach out and operate the rod 90 from the +X direction of the holding jig 1. In particular, when there are three or more of the above groups, the operation of the middle group cannot be performed from the Z direction due to the adjacent groups. On the other hand, if one aspect of the present invention is adopted, the operator only needs to reach out and operate the rod 90 from the +X direction of the holding jig 1, and the operation of the middle group can also be performed. The bending claw is also provided in consideration of such a case where there are a plurality of the above groups.

[0086] In addition, in one aspect of the present invention, the bending claws are arranged in two rows in the X direction. The reason is as follows.

[0087] The shape of the lens substrate L held by the holding jig 1 of one aspect of the present invention may be circular when viewed from above (observed in the Z direction), may be elliptical when viewed from above, or may be a special shape other than these.

[0088] As described above, when using the holding jig 1 having a plurality (preferably three or more) sets of holding jig members 1A, compared with the case where it cannot be applied unless all the lens substrates L have the same shape and the same size, when the lens substrates L, L' having different shapes and / or sizes are arranged in the holding jig members 1A of each group and then the entire holding jig 1 is subjected to an impregnation treatment, the working efficiency is better.

[0089] On the other hand, when lens substrates L having different shapes and / or sizes are arranged in the holding jig members 1A of each group, the X-direction position of the center of gravity of the arranged lens substrates L varies depending on each lens substrate L.

[0090] For example, even if the bending claw (one) 32A is provided in such a manner that the groove 33A is arranged directly below the center of gravity of the lens substrate L having a circular shape in plan view, in the case of the lens substrate L' having an elliptical shape in plan view with the major axis in the Y direction, the center of gravity of the lens substrate L also exists at a position in the -X direction with respect to the groove 33A of the bending claw (one) 32A.

[0091] Thus, the elliptical lens substrate L' cannot be stably held by the bending claw 32A. Therefore, it is preferable to provide another bending claw (two) 32B in such a manner that the groove is arranged directly below the center of gravity of the elliptical lens substrate L.

[0092] However, the center position of the groove 33A of the bending claw (one) and the center position of the groove (not shown) of the bending claw (two) at this time are preferably equivalent in the Z direction (for example, an error of 3 mm or 1 mm). According to this structure, regardless of which shape and / or size of the lens substrates L, L' are arranged in which group of the holding jig members 1A, as long as they can be held by the bending claw (one) 32A or the bending claw (two) 32B, even if the lens substrates L, L' with different center of gravity positions in the X direction are mixed, they can be held by one holding jig 1.

[0093] Summarizing the above content, preferably, the third holding mechanism 35 is a plurality of long bar members arranged in the horizontal direction within a plane including the rotation direction, and the center positions of the grooves in the axial direction of rotation in each long bar member are the same.

[0094] As described above, in this specification, the case where the lens substrate L is circular has been mainly described, but the scope of application of the present invention is not limited thereto. According to the holding jig 1 of one embodiment of the present invention, the special-shaped lens substrate L' (elliptical or other shapes) can also be held by the holding jig 1 in the same manner and simultaneously. When holding a lens substrate L other than circular, it can be held in such a manner that the major axis direction (the direction of the maximum size of the lens) is vertical. For a positive prescription lens with a relatively small edge thickness, since the periphery to be held is easily deformed or damaged, the effect of the present invention can be significantly obtained.

[0095] When the optical element held by the holding jig 1 of one embodiment of the present invention is a lens substrate L, compared with a negative power lens (negative lens), the effect of adopting the structure described above is greater in a positive power lens (positive lens).

[0096] In positive lenses, the thickness of the lens ends (edges) tends to decrease, and deformation caused by heat is likely to occur. In addition, in positive lenses, irregular-shaped lenses (the lens surface is ground to obtain a specified design value, and the ends of the round rough-edged lenses are defective, and become irregular shapes such as ellipses when the hard coating film of the present application is formed) are mixed, and are easy to fall off.

[0097] On the other hand, by using the holding jig 1 according to one aspect of the present invention, it is possible to reliably prevent the lens from being thermally deformed or falling, and it is possible to maintain both productivity and yield at high levels.

[0098] The third holding mechanism 35 is not limited to the curved claw. The third holding mechanism 35 may be a member fixed to the base and elongated in the axial direction of rotation, and may be a strip member provided with a plurality of grooves for sandwiching the lens substrate L to be held in the axial direction of rotation. Furthermore, the strip member may be a plate-shaped member whose shape when viewed from the +X direction to the -X direction is at least one of a bending line and a curve.

[0099] The illustration in this specification shows a plate-like component extending in the Z direction and having a sawtooth-shaped bending line when viewed from the +X direction to the -X direction. In the holding fixture 1 of one embodiment of the present invention, the lens substrate L is held by the valley portion of the sawtooth. With this structure, when the lens substrate L is lifted from the coating liquid, more starting points for the remaining coating liquid to drip are created. As a result, the dripping of the coating liquid can be promoted, and the recovery of the remaining coating liquid flowing from the lens substrate L can be promoted. The coating liquid of the hard coat layer has high viscosity and is expensive. Therefore, it is preferably returned to the immersion tank quickly. According to the third holding mechanism 35 of one embodiment of the present invention, this effect can be achieved, and the working efficiency is further improved.

[0100] The holding jig 1 according to one embodiment of the present invention further includes a shaft member 44 as a spacer between the first holding mechanism 15 and the base.

[0101] The shaft member 44 as the spacer is made of a cylindrical resin member such as plastic. As a material constituting the shaft member 44, a material that increases frictional resistance with the first arm 10 when pressed by the first arm 10 is preferably used.

[0102] A through hole 44A is formed in the shaft member 44. The outer diameter of the shaft member 44 is slightly smaller than the inner diameter of the coil spring 60. That is, the shaft member 44 is sized to be accommodated in the coil portion 62 of the coil spring 60.

[0103] In summary, in the arm fixing mechanism according to one embodiment of the present invention, the threaded portion 42A of the bolt 42 is inserted in the order of the threaded hole 10C of the first arm 10, the through hole 44A of the shaft member 44, the helical portion 62 of the helical spring 60, the through hole 52 of the fitting flat plate 51B constituting the connecting member 51 which is a part of the base 50, the pair of nuts 46A, 46B, and the through hole 90A of the rod 90. And the end nut is tightened from the +Z direction to the front end of the threaded portion 42A.

[0104] With such a structure, in one embodiment of the present invention where the threaded portion 42A is a right-handed thread, before the rod 90 rotates, the first arm 10 can rotate relative to the base 50 about the threaded portion 42A of the bolt 42. And by rotating the rod 90 to also rotate the nuts 46A, 46B, the first arm 10 moves slightly in the +Z direction relative to the bolt 42. Then, the first arm 10 is pressed against the shaft member 44. As a result, the frictional force between the first arm 10 and the shaft member 44 becomes larger. Finally, the rotation of the first arm 10 is restricted, and the first arm 10 can be fixed relative to the base 50.

[0105] That is, the shaft member 44 as a spacer directly contacts the first holding mechanism 15 (specifically, the first arm 10) when the rod 90 rotates and functions as a pressed object member.

[0106] The helical spring 60 includes a helical portion 62 formed in a spiral shape and a first end portion 64 and a second end portion 66 extending from the end of the helical portion 62. The helical spring 60 is installed around the shaft member 44 by inserting the shaft member 44 through the inside of the helical portion 62. The front end portion of the first end portion 64 is bent in a direction away from the helical portion 62, and the front end portion of the second end portion 66 is bent in a direction away from the helical portion 62.

[0107] The front end portion of the first end portion 64 of the helical spring 60 is hooked on the base body connecting flat plate 51A, and the front end of the second end portion 66 is hooked on the upper edge of the first arm 10. The helical spring 60 is installed in a state where torsion is pre-applied between the first end portion 64 and the second end portion 66. Thus, the helical spring 60 applies a force to the first arm 10 so that the first claw 12 faces the rotation of the second arm 20.

[0108] In order to hold the lens substrate L using the holding jig 1, for example, the following operations are performed.

[0109] First, the first arm 10 is pulled laterally by hand and rotated so as to move away from the second arm 20. And in this state, the lens substrate L is disposed in the space surrounded by the first claw 12, the second claw 22, and the third claws 32A, 32B. Then, the hand is released from the first arm 10 to release the pulling of the first arm 10.

[0110] Accordingly, the first claw 12 of the first claw 12, the second claw 22 of the second claw 22, and the third claws 32A, 32B (the grooves of one of the plurality of bent claws) respectively abut against the side portion of the lens substrate L, and the lens substrate L is held at three points.

[0111] Next, the rod 90 of the arm fixing mechanism is rotated. As a result, the rotation of the first arm 10 is fixed, and in a state where the first claw 12, the second claw 22, and the third claws 32A, 32B are in contact with the side portion of the lens substrate L, the lens substrate L is held in a state where substantially no acting force is applied to the lens substrate L.

[0112] At this time, the height direction distance l1 from the center of gravity of the lens substrate L to the positions where the first claw 12 and the second claw 22 hold the lens substrate L is preferably 0.3 times or less of the diameter of the lens substrate L (the major axis when the lens substrate L is elliptical).

[0113] In addition, the horizontal direction distance l2 from the center of gravity of the lens substrate L to the positions where the third claws 32A, 32B hold the lens substrate L is preferably 0.15 times or less of the diameter or major axis R of the lens substrate L in the horizontal direction.

[0114] By setting the holding position of the lens substrate L as described above, the lens substrate L is stably held. Further, when the lens substrate L is lifted from the coating liquid in the subsequent process, it is possible to suppress the film thickness unevenness caused by the remaining coating liquid remaining in the lens holding mechanism from crossing the optical surface of the lens substrate L due to gravity.

[0115] It should be noted that regarding the acting force of the spiral spring 60 on the first arm 10, according to the size and shape of the lens substrate L, when installing the lens substrate L, it is preferable to adjust the force with which the first claw 12 presses the lens substrate L to about 0.1 - 1 N. If the pressing force is 1 N or less, a large force is not required for installing the lens substrate L, which is preferable. If the pressing force is 0.1 N or more, the stability of the installation operation is improved. Both have a positive effect on the workability.

[0116] Moreover, by the rotation operation of the rod after installing the lens substrate L, the acting force of the spring is restricted. By this restriction, the acting force or pressing force substantially applied to the lens substrate L is reduced and is substantially zero. "Substantially zero" means less than 0.5 N, preferably less than 0.1 N. In the case of being less than the quantitative lower limit value of the measured acting force or pressing force, it can be regarded as substantially zero.

[0117] The rotatable area of the lever 90 is not limited, but in order to easily fix the first arm 10 with one fingertip of the operator, it is preferable to set the rotatable area. Specifically, in order to be able to operate the lever 90 only by moving the fingertip from top to bottom, when the +Y direction is set as the rotation angle of 0 degrees and the +X direction is set as the rotation angle of 90 degrees in the XY plane, the rotatable area can be set to at least the rotation angles of 0 to 160 degrees. Moreover, the initial position θ1 ( Figure 4 ) of the lever 90 before fixing the first arm 10 can also be set to a position within the range of 30 to 90 degrees.

[0118] At this time, the first holding mechanism 15 can also be fixed by rotating the lever 90 in the same direction (downward) as the rotation direction of the first arm 10. On the other hand, the lever 90 is rotated in the opposite direction (upward) (for example, to the rotation angle of 0 degrees). Specifically, the following operations can also be performed. The lever 90 is rotated from the rotation angle of 60 degrees (θ1), which is the initial position of the lever 90, to the rotation angle of 160 degrees (θ2) to fix the first holding mechanism 15. On the other hand, the holding jig 1 can also be configured such that when the first arm 10 is lifted to a state close to horizontal, the lever 90 is rotated to the rotation angle of 0 degrees (upward, opposite direction), whereby the first holding mechanism 15 can be fixed in this state.

[0119] <Method for manufacturing spectacle lenses, etc.>

[0120] Hereinafter, a film forming method for the lens substrate L using the above-mentioned holding jig 1 and a method for manufacturing spectacle lenses will be described.

[0121] The outline of the method for manufacturing spectacle lenses according to one embodiment of the present invention is as follows.

[0122] "A method for manufacturing an optical element, which is a method for manufacturing an optical element by holding an optical element (lens substrate L) with the holding jig 1 according to one embodiment of the present invention and forming a film on the optical element, and includes: an optical element holding step of arranging the optical element in the holding jig 1, applying a force so that the first holding mechanism 15 rotates toward the side surface of the optical element, and holding the peripheral portion of the optical element by a plurality of holding mechanisms; a first holding mechanism fixing step of fixing the first holding mechanism 15 by rotating the lever 90 after the optical element holding step; an impregnation step of impregnating the optical element together with the holding jig 1 in a coating liquid after the first holding mechanism fixing step; a lifting step of lifting the optical element together with the holding jig 1 from the coating liquid; and a curing step of heating and curing the coating liquid applied to the optical element."

[0123] The manufactured spectacle lenses can be various types of lenses such as single - focus lenses, multi - focus lenses, progressive - power lenses, etc. The type of the lens is determined by the surface shapes of both sides of the lens substrate L. In addition, the surface of the lens substrate L can be any one of a convex surface, a concave surface, and a flat surface. In a normal lens substrate L and spectacle lens, the object - side surface is convex and the eyeball - side surface is concave. However, it is not limited to these.

[0124] As the lens substrate L, a plastic lens substrate L is preferred. Examples of the resin used as the plastic lens substrate L include styrene resins represented by (meth) acrylic resins, polycarbonate resins, allyl resins, allyl carbonate resins such as diethylene glycol bisallyl carbonate resin (CR - 39), vinyl resins, polyester resins, polyether resins, urethane resins obtained by the reaction of an isocyanate compound with a hydroxyl compound such as diethylene glycol, thiourethane resins obtained by reacting an isocyanate compound with a polythiol compound, and cured products obtained by curing a curable composition containing a (thio) epoxy compound having one or more disulfide bonds in the molecule (commonly referred to as transparent resins).

[0125] In addition, the refractive index of the lens substrate L that can be applied is, for example, a lens substrate of about 1.48 to 1.75.

[0126] Hereinafter, taking the film - forming of the hard coating film on the lens substrate L as an example, Figure 5 it will be described.

[0127] For the lens substrate L as a material for an ophthalmic optical lens, in order to be pre - formed into a shape corresponding to the prescription for the user, the semi - finished lens is cut, polished, and cleaned. The lens substrate L applying the present invention can also be a semi - finished lens. Or, it can also be a lens substrate L having optical surfaces on the eyeball side and the object side formed based on the prescription for the user.

[0128] First, as Figure 5 shown, the lens substrate L is mounted on the holding jig 1 (S20). The mounting of the lens substrate L on the holding jig 1 is performed as follows.

[0129] First, pull the first arm 10 to rotate the first arm 10 in a direction away from the second arm 20, and set a space (S21) between the first claw 12 and the second claw 22 and the curved claws 32A, 32B as the third claws.

[0130] Next, in a state where the first arm 10 is separated from the second arm 20 and the bent claws 32A and 32B serving as the third claws in this way, the lens substrate L is arranged so as to be surrounded by the first claw 12, the second claw 22, and the bent claws 32A and 32B (S22). Further, when the first arm 10 is urged toward the end of the held lens substrate L, in order to overcome this acting force, the first arm 10 is separated from the second arm and the third arm, and the first arm 10 is pulled as described above.

[0131] Next, the pulling of the first arm 10 is released. As a result, by the acting force of the coil spring 60, the first arm 10 rotates in a direction approaching the second arm 20 and the two rows of bent claws 32A and 32B, the first claw 12 presses the lens substrate L, and the first claw 12, the second claw 22, and the bent claw 32A or 32B serving as the third claw come into contact with the peripheral portion of the lens substrate L (S23) (optical element holding step).

[0132] The peripheral portion of the lens substrate L refers to the end portion of the lens substrate L in a plan view, mainly the side surface LS. According to each claw described in one embodiment of the present invention, it comes into contact with a portion of the angle between the side surface LS of the lens substrate L and the two main surfaces. However, when the corner portion of the lens substrate L is chamfered, sometimes only a part of the two main surfaces comes into contact. On the other hand, in the case of the above-mentioned very small part of the contact, substantially no external force acts on the lens substrate L, and deformation and damage of the lens substrate L can be prevented. As an example of the above-mentioned very small part, it refers to the range within 1 mm, more preferably within 0.5 mm, from the end portion of the lens substrate L in a plan view toward the inside.

[0133] Then, the rod 90 of the arm fixing mechanism is rotated downward. As a result, the first arm 10 slightly moves in the +Z direction with respect to the bolt 42, and along with this, the first arm 10 is pressed against the shaft member 44, and the rotation of the first arm 10 is fixed by friction accompanying the pressing (S24) (first holding mechanism fixing step). Through these S21 to S24, the lens substrate L can be held by the holding jig 1. In this state, the lens substrate L is stably held in such a manner that its optical surface extends substantially vertically, and substantially no acting force of the coil spring 60 acts on its peripheral portion. That is, at the position where the first to third holding mechanisms 35 come into contact with the end portion of the lens substrate L in the held state, the first holding mechanism 15 is fixed, and the acting force for pressing the lens substrate L is substantially eliminated.

[0134] Next, a hard coating film is formed on the lens substrate L (S30). The film formation of the hard coating film on the lens substrate L is performed as follows.

[0135] First, the holding jig 1 is lowered, and the lens substrate L together with the holding jig 1 is immersed in a coating liquid mainly composed of a silicone compound for forming a hard coating film (S31) (immersion step).

[0136] Next, the lens substrate L is lifted together with the holding jig 1 to lift the lens substrate L from the coating liquid (S32) (lifting step). By lifting the lens substrate L from the coating liquid in this way, the remaining coating liquid is removed from the optical surface of the lens substrate L due to gravity.

[0137] Next, the holding jig 1 is heat-treated at 80 to 120°C. By heat-treating the holding jig 1, the coating liquid applied to the surface of the lens substrate L is heated and cured (S33) (curing step). At this time, according to the holding jig 1 of one embodiment of the present invention, since an external force (the acting force for holding the lens) does not substantially act on the lens substrate L, deformation and damage of the lens substrate L can be prevented.

[0138] Then, the immersion in the coating liquid (S31), the lifting from the coating liquid (S32), and the heat curing (S33) are repeated until a hard coating film with a specified thickness is formed on the optical surface of the lens substrate L. By repeating these S31 to S33, a hard coating film can be formed. It should be noted that in order to form a hard coating film with a specified thickness, S31 to S33 can be repeated as needed.

[0139] In addition, when forming the hard coating film (S30) on the lens substrate L, it can also be performed after first forming a primer layer on the surface of the lens substrate L. The primer layer is used to ensure the impact resistance of the lens substrate L and to ensure the close adhesion between the hard coating film and the lens substrate L. When the lens substrate L is made of a high refractive index material, the primer layer may be made of a material that does not affect the optical properties. As a method for forming such a primer layer, it can be formed by coating through an immersion method, a spin coating method, a spraying method, etc., and then cured by heating or light irradiation.

[0140] Through the above steps, a hard coating film can be formed on the lens substrate L. The use of the holding jig 1 of one embodiment of the present invention can also be up to this point. The steps after the film formation of the hard coating film are not limited. For example, an antireflection film (S40) can also be formed on the surface of the hard coating film of the lens substrate L after it is removed from the holding jig 1. The antireflection film can be formed, for example, by a vacuum evaporation method, an immersion method, a spin coating method, etc. A spectacle lens can be manufactured through the above steps.

[0141] <Effects brought by one embodiment of the present invention>

[0142] According to one embodiment of the present invention, the following effects are achieved.

[0143] In the holding jig 1 according to one embodiment of the present invention, the rod 90 is used as the fixing mechanism of the first holding mechanism 15. Therefore, the operator can reach out and operate the rod 90 from the +X direction of the holding jig 1. Moreover, even if the operator does not direct the whole hand toward the rod 90, the rod 90 can be operated with only one fingertip, improving the working efficiency.

[0144] As a result, it is not necessary to ensure a large space between the holding jigs 1 as in the case of using wing bolts, nor is it necessary to reduce the number of holding jigs 1 that can be subjected to the film forming process together, improving the working efficiency.

[0145] In the holding jig 1 according to one embodiment of the present invention, the rod 90 is used as the fixing mechanism of the first holding mechanism 15. Therefore, the operator can reach out and operate the rod 90 from the +X direction of the holding jig 1. In particular, when there are three or more of the above groups, the operation of the middle group cannot be performed from the Z direction due to the adjacent groups. On the other hand, if one embodiment of the present invention is adopted, the operator only needs to reach out and operate the rod 90 from the +X direction of the holding jig 1, and the operation of the middle group can also be performed.

[0146] In the case of using the holding jig 1 including the holding jig member 1A having a plurality of (preferably three or more) groups, after arranging the lens substrates L having various shapes and / or sizes on the holding jig members 1A of each group, the entire holding jig 1 is subjected to an immersion process, and the working efficiency is better. Therefore, it is preferable to provide the other bending claw (two) in such a manner that a groove is arranged directly below the center of gravity of the elliptical lens substrate L.

[0147] The center position of the groove 33A of the bending claw (one) and the center position of the groove (not shown) of the bending claw (two) are preferably the same in the Z direction at this time. According to this structure, regardless of which shape and / or size of the lens substrate L is arranged on the holding jig member 1A of each group, as long as it can be held by the bending claw (one) or the bending claw (two), the types of lens substrates L that can be followed are increased.

[0148] In addition, according to one embodiment of the present invention, the first claw 12 is mounted on the first arm 10 rotatably provided on the base. Therefore, by rotating the first arm 10, even lens substrates L having different sizes and shapes can be held. Further, after the lens substrate L is arranged at a fixed position by the first to third holding mechanisms 35, by tightening the bolts 42 constituting the arm fixing mechanism to the nuts 46A and 46B, the rotation of the first arm 10 is fixed, and it is stably held without applying an external force to the lens substrate L. Therefore, when performing heat treatment such as heat curing of the coating material on the lens substrate L, it is also possible to prevent the lens substrate L from being deformed or damaged due to an external force.

[0149] Further, according to one aspect of the present invention, the arm fixing mechanism fastens the bolt 42 to the nuts 46A and 46B, and arranges the first arm 10 via the shaft member 44 by using the bolt 42 and the nuts 46A and 46B, thereby pressing the first arm 10 against any adjacent member to fix it. Thus, an operator who performs the film forming process on the lens substrate L can easily fix and release the fixation of the first arm 10 without taking time.

[0150] Further, in one aspect of the present invention, the second claw 22 is attached to the second arm 20. Thereby, the second claw 22 can be held softly, and the force acting on the lens substrate L can be reduced.

[0151] <Other>

[0152] The technical scope of the present invention is not limited to one aspect of the present invention, and includes aspects in which various changes or improvements are made within the range of deriving specific effects obtained by the constituent elements of the invention or their combinations.

[0153] In one aspect of the present invention, the case of forming a hard coating film on the surface of the lens substrate L has been described, but it is not limited thereto, and a blue light cut-off film that reduces glare, improves visual recognition, and contrast by cutting off light in the blue region (wavelength region of 380 to 500 nm) may also be formed; for example, an antireflection film containing silicon oxide, titanium dioxide, zirconium oxide, tantalum oxide, etc.; a waterproof film that uses an organosilicon compound having a fluorine atom to improve waterproofness, etc. In addition, the holding jig 1 according to one aspect of the present invention can also prevent deformation and damage of the lens substrate L when annealing the lens substrate L.

[0154] In one aspect of the present invention, the lens substrate L is configured to be held by the first claw 12, the second claw 22, and the bent claws 32A or 32B as the third claw, but the lens substrate L may also be held by four or more claws. And, in one aspect of the present invention, the second claw 22 and the bent claws 32A or 32B as the third claw are in a fixed state, but they may also be movable.

[0155] Conversely, the lens substrate L may also be held by two claws (two holding mechanisms). For example, the first holding mechanism 15 may also integrate the second holding mechanism 25 (second claw 22) and the third holding mechanism 35 (bent claws 32A and 32B as the third claw) as described above. For example, a metal rod may extend from the bent claw of the third holding mechanism 35 in the shape of a key bracket "」" and be connected to the base body 53, and the second claw 22 may be provided at this key bracket portion. However, since the three-point holding of the optical element brings stable holding, it is preferable to provide at least three portions (for example, claws) in contact with the optical element as in one aspect of the present invention.

[0156] In one embodiment of the present invention, the case where the bolt 42 penetrates the helical portion 62 of the helical spring 60 is illustrated. However, when a component other than the helical spring 60 is used as the biasing member, the bolt 42 does not need to penetrate the biasing member.

[0157] The through-hole 90A of the rod 90 may also be screwed with the threaded portion 42A of the bolt 42. In this case, in one embodiment of the present invention, when the rod 90 is rotated downward, the rod 90 itself slightly moves in the +Z direction relative to the bolt 42. As a result, the first holding mechanism 15 is pressed against the shaft member 44, and the first holding mechanism 15 is fixed.

[0158] In one embodiment of the present invention, the case where one rod 90 is provided in a set of holding jig members 1A is illustrated. However, the present invention is not limited to this embodiment. For example, only one common rod 90 may be provided in the holding jig 1. According to this structure, even without operating the rods 90 of the respective holding jig members 1A one by one, by operating only one rod 90, the first holding mechanisms 15 of the respective holding jig members 1A can be fixed together. In addition, one rod 90 may be provided in a set of holding jig members 1A, and on the other hand, a mechanism capable of operating the respective rods 90 simultaneously may be provided in the holding jig 1.

[0159] In one embodiment of the present invention, the fixed-type holding jig 1 is employed. On the other hand, as described in Patent Document 1, the present invention can also be applied to a holding jig 1 that can be suspended.

[0160] The holding jig 1 according to one embodiment of the present invention is not limited to a set in which a plurality of holding jig members 1A are arranged. Indeed, the holding jig 1 according to one embodiment of the present invention has the following effect: preventing deterioration of work efficiency due to narrowing of the space between adjacent holding jig members 1A caused by a set in which a plurality of holding jig members 1A are provided. On the other hand, even in a holding jig 1 in which there is only one holding jig member 1A, considering that the rotation of the first arm 10 can be fixed with one fingertip, there is no change in the improvement of work efficiency in the film-forming process.

[0161] Description of Reference Numerals

[0162] 1: Holding jig

[0163] 1A: Holding jig member (set)

[0164] 10: First arm

[0165] 10A: Base end portion

[0166] 10A1: Torsion portion

[0167] 10B: Front end portion

[0168] 10C: Threaded hole

[0169] 12: First claw

[0170] 12A: Base end portion

[0171] 12B: Tip end portion

[0172] 15: First holding mechanism

[0173] 20: Second arm

[0174] 20A: Base end portion

[0175] 20B: Tip end portion

[0176] 22: Second claw

[0177] 22A: Base end portion

[0178] 22B: Tip end portion

[0179] 23: Bolt

[0180] 25: Second holding mechanism

[0181] 32A: Bent claw (one)

[0182] 32B: Bent claw (two)

[0183] 33A: Groove of bent claw (one)

[0184] 35: Third holding mechanism

[0185] 42: Bolt

[0186] 42A: Threaded portion

[0187] 42B: Head

[0188] 44: Shaft member

[0189] 44A: Through hole

[0190] 46A: Double nut (one)

[0191] 46B: Double nut (two)

[0192] 46C: End nut

[0193] 50: Base

[0194] 51: Connecting member

[0195] 51A: Flat plate for connecting base body

[0196] 51A1: Screwing hole

[0197] 51A2: Screwing hole

[0198] 51B: Fitting flat plate

[0199] 52: Through-hole

[0200] 53: Base body

[0201] 54: Square bar

[0202] 55: Bolt

[0203] 60: Helical spring

[0204] 62: Helical part

[0205] 64: First end

[0206] 66: Second end

[0207] 90: Rod

[0208] 90A: Through-hole

[0209] XY1: Plane (XY plane) including the rotation direction of the first arm

[0210] XY2: Plane parallel to the plane (XY plane) including the rotation direction of the first arm.

Claims

1. A holding fixture for holding an optical element, characterized in that, have: base; A plurality of holding mechanisms for holding the peripheral edge of the optical element; a force applying member for applying force to a first holding mechanism among the plurality of holding mechanisms in such a manner that the first holding mechanism is rotated toward a side surface of the optical element to be held; a lever capable of being rotated in a direction within a plane parallel to a plane including a rotation direction of the first holding mechanism, By rotating the lever to fix the first holding mechanism, the force of the urging member on the optical element is reduced.

2. The holding fixture according to claim 1, characterized in that, A screw-on member is further provided, which penetrates at least the base, the first holding mechanism, and the rod, and is screw-on with at least any one of the rod, the base, and the first holding mechanism. By rotating the rod, the first holding mechanism moves relative to the screw-engaged member in one direction in the axial direction of the rotation, and is pressed and fixed to a member adjacent to the holding mechanism.

3. The holding fixture according to claim 2, characterized in that, When at least the first holding mechanism, the urging member, the rod, and the screw member are set as a set, a plurality of the sets arranged in the axial direction of the rotation are provided.

4. The holding fixture according to claim 1, characterized in that, The plurality of retaining mechanisms include: A second holding mechanism disposed opposite to the first holding mechanism so as to sandwich the optical element to be held; The third holding mechanism supports the optical element to be held from below.

5. The holding fixture according to claim 4, characterized in that, The second holding mechanism is fixed to the base.

6. The holding fixture according to claim 4, characterized in that, The third holding mechanism is a member fixed to the base and elongated in the axial direction of the rotation, and is a long member provided with a plurality of grooves for sandwiching the optical element to be held in the axial direction of the rotation.

7. The holding fixture according to claim 6, characterized in that, The third holding mechanism is a plurality of the elongated members arranged in a horizontal direction within a plane including the rotation direction, and the center positions of the grooves in the axial direction of the rotation are the same in the respective elongated members.

8. The holding fixture according to claim 6, characterized in that, The elongated member is a plate-shaped member having a shape of at least one of a bending line and a curved line when viewed from a horizontal direction within a plane including the rotation direction.

9. The holding fixture according to claim 2, characterized in that, The head of the screw-engaging member and the rod are located across the first holding mechanism. By rotating the rod, the first holding mechanism moves relative to the screw component in any direction in the axial direction of the rotation, and the pressing object when the first holding mechanism is pressed is the head of the screw component, or a component penetrated by the screw component and arranged on any side of the first holding mechanism.

10. The holding fixture according to claim 9, characterized in that, The force applying component is a coil spring, The screw-engaging member further penetrates the force-applying member, In the axial direction of the rotation, the head of the screw member, the first holding mechanism, the urging member, the base, and the rod are arranged in this order.

11. The holding fixture according to claim 10, characterized in that, A spacer is further provided between the first holding mechanism and the base portion. The spacer has a size that can be accommodated in the coil portion of the coil spring, and when the lever is rotated, the spacer directly contacts the first holding mechanism to fix the first holding mechanism.

12. The holding fixture according to claim 2, characterized in that, The first holding mechanism is fixed by rotating the lever in the same direction as the direction in which the first holding mechanism is rotated toward the side of the optical element, By rotating the rod in a direction opposite to the direction in which the first holding mechanism rotates toward the side surface of the optical element, the first holding mechanism is fixed in a state where it rotates in the opposite direction.

13. A method for manufacturing an optical element, which is a method for manufacturing an optical element by holding the optical element using the holding jig according to any one of claims 1 to 12 and forming a film on the optical element, characterized in that, Comprising: An optical element holding step of disposing the optical element in the holding jig, applying a force in such a manner that the first holding mechanism rotates toward the side surface of the optical element, and holding the peripheral portion of the optical element by the plurality of holding mechanisms; A first holding mechanism fixing step of fixing the first holding mechanism by rotating the rod after the optical element holding step; An impregnation step of impregnating the optical element together with the holding jig in a coating liquid after the first holding mechanism fixing step; A lifting step of lifting the optical element from the coating liquid together with the holding jig; A curing step of heating and curing the coating liquid coated on the optical element.

Images