Method for manufacturing optical component
In the manufacturing of optical parts, the positioning member contacts the notch part of the plate for precise alignment, and the bonding is carried out through the adhesion agent or laser welding, the problem of spatial image inaccuracy caused by optical axis misalignment in the prior art is solved, and the accuracy between the plates is achieved with good alignment and the accuracy of optical parts.
Patent Information
- Application Number
- CN202380067579.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-04-27
- Filing Date
- 2023-10-18
- Publication Date
- 2025-04-29
AI Technical Summary
In the existing upright isometric real image optical system, the optical axis misalignment makes it impossible to obtain accurate spatial images, and a plate alignment technology with good accuracy is required.
By joining two plates with optical element parts, a first positioning process, a second positioning process and a bonding process are adopted, and precise alignment is performed by contacting the positioning member with the notch portion of the plate, and bonding is performed by adhesion agent or laser welding.
It achieves good accuracy and alignment between the plates, ensures the accuracy and stability of optical parts, and solves the problem of optical axis misalignment.
Smart Images
Figure CN119907937A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a method for manufacturing an optical component. Background Art
[0002] Patent document 1 discloses an image floating display device, comprising: an erect equal-magnification real image optical system including two double-sided lens plates, and an image display element located at the object side focal plane of the erect equal-magnification real image optical system. The image displayed by the image display element located at the object side focal plane position of the erect equal-magnification real image optical system forms an erect equal-magnification spatial image at the image side focal plane position through the erect equal-magnification real image optical system. As a result, the image displayed by the image display element can be visually felt to float.
[0003] Prior art literature
[0004] Patent Literature
[0005] Patent Document 1: Japanese Patent No. 3195249 Summary of the invention
[0006] Problems to be solved by the invention
[0007] In the erecting equal-magnification real image optical system described in Patent Document 1, an accurate aerial image cannot be obtained if the optical axes of the lenses formed on the two double-sided lens plates are misaligned. Therefore, a technique for accurately aligning the two double-sided lens plates is required.
[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for manufacturing an optical component capable of accurately aligning plates.
[0009] Technical means of solving problems
[0010] The problem to be solved by the present invention is as described above. In order to solve the problem, the manufacturing method of the optical component of the present invention is a manufacturing method of the optical component by joining two or more plates having optical element parts to manufacture the optical component, and includes: a first positioning step, making the positioning member contact with a first plate having at least two first notch parts formed along two directions orthogonal to each other, and a pair of opposing surfaces of each first notch part facing each other; a second positioning step, making the positioning member contact with a second plate having at least two second notch parts formed along two directions orthogonal to each other, and a pair of opposing surfaces of each second notch part facing each other; and a joining step, joining the first plate and the second plate.
[0011] Effects of the Invention
[0012] According to the present invention, the plates can be aligned with each other with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] [ Figure 1 ](a) is a plan view showing an example of an optical component. (b) is an enlarged side view showing an example of an optical component.
[0014] [ Figure 2 ](a) is a side sectional view showing an example of a forming die. (b) is a plan view showing a lower die.
[0015] [ Figure 3 ] Figure 3 It is a perspective view showing an assembly jig.
[0016] [ Figure 4 ] Figure 4 It is a perspective view showing a state where the lower plate is placed on an assembly jig.
[0017] [ Figure 5 ] Figure 5 It is a plan view showing a state where the positioning member is inserted into the notch portion of the lower plate.
[0018] [ Figure 6 ] Figure 6 It is a perspective view showing a state where the positioning member is inserted into the notch portion of the lower plate.
[0019] [ Figure 7 ] Figure 7 It is a perspective view showing a state where the positioning member is inserted into the notch portion of the upper plate.
[0020] [ Figure 8 ] Figure 8 It is a perspective view showing a state where a clamp is placed on an upper plate.
[0021] [ Fig. 9 ] Fig. 9 This is a flowchart showing an example of a method for manufacturing an optical member.
[0022] [ Fig.10 ] Fig.10 It is a plan view showing a plate according to the second embodiment.
[0023] [ Fig.11 (a) Yes Fig.10 (b) is the enlarged view of section A. (b) is the XX cross-sectional view.
[0024] [ Fig.12 ] (a) is an enlarged plan view showing a lower plate coated with an adhesive. (b) is a front cross-sectional view showing a state where an upper plate is placed on the lower plate coated with an adhesive.
[0025] [ Fig.13](a) is a front cross-sectional view of an optical component according to a first variant. (b) is a front cross-sectional view of an optical component according to a second variant. (c) is a front cross-sectional view of an optical component according to a third variant.
[0026] [ Fig.14 ] (a) is an enlarged plan view showing a plate according to the third embodiment. (b) is a front cross-sectional view showing a state where a laser is irradiated onto the plate according to the third embodiment.
[0027] [ Fig.15 ] Fig.15 This is a flowchart showing an example of a method for manufacturing an optical member according to the third embodiment.
[0028] [ Fig.16 ](a) is a schematic plan view of a plate according to a fourth modification. (b) is a schematic plan view of a plate according to a fifth modification. DETAILED DESCRIPTION
[0029] In the following description, directions indicated by arrows U, D, L, R, F, and B shown in the drawings are defined as upward, downward, left, right, front, and rear directions, respectively. In addition, for the sake of convenience, the shapes, arrangements, dimensions, etc. of the components in the drawings may be appropriately exaggerated.
[0030] <Optical parts 1>
[0031] First, use Figure 1 , an optical component 1 manufactured by the manufacturing method of this embodiment (first embodiment) is described.
[0032] The optical component 1 of the present embodiment forms an image projected on a display device such as a monitor at a focal position, thereby allowing a user to visually recognize an image floating from the display device. The optical component 1 includes two plates 10 .
[0033] The plate 10 is a microlens array including an optical element portion 11 in which tiny lenses 11a are continuously arranged. The plate 10 is formed in a rectangular plate shape. The optical element portion 11 is set in a rectangular range excluding the outer periphery of the plate 10. A large number of convex lenses 11a are formed on both sides of the optical element portion 11 in a regular arrangement in the vertical and horizontal directions. All the lenses 11a are formed in the same shape (in the example, hemispherical). The lenses 11a on both sides of the plate 10 are formed so that the optical axes are consistent with each other.
[0034] Notches (left notch 12, right notch 13, and rear notch 14) for positioning are formed on the outer periphery of the plate 10 (outside the optical element section 11). The notches (left notch 12, right notch 13, and rear notch 14) are formed on one side surface of the rectangular plate 10 and two side surfaces adjacent to the side surface. The left notch 12 and the right notch 13 are formed on Figure 1 (a) The left and right sides of the plate 10. The left notch 12 and the right notch 13 are formed to extend in the left-right direction. The left notch 12 and the right notch 13 are located at the center of the width of the plate 10 in the front-back direction. The rear notch 14 is formed at Figure 1 (a) is a rear side portion of the plate 10. The rear notch portion 14 is formed to extend in the front-rear direction. That is, the rear notch portion 14 is formed in a direction perpendicular to the extending direction of the left notch portion 12 and the right notch portion 13. The rear notch portion 14 is located at the center of the width of the plate 10 in the left-right direction. In this embodiment, since the notches are formed in substantially the same shape, the following description will focus on the left notch portion 12 in more detail.
[0035] The left notch portion 12 is formed by notching the left side portion of the plate 10 toward the inside (right side) so as to extend from the left side portion of the plate 10 to the right. In addition, the left notch portion 12 does not need to be notched to be formed, and the forming method is irrelevant, as long as it is a portion of the shape formed by notching a portion of the plate 10. A pair of faces (opposing faces) 12a, 12b facing each other front and back are formed in the left notch portion 12. The pair of opposing faces 12a, 12b are formed to extend straightly to the left and right. Thus, the left notch portion 12 is formed to have a certain width in the front-to-back direction. In addition, the direction in which the pair of opposing faces 12a, 12b extend ( Figure 1 The left-right direction (a) is referred to as the longitudinal direction of the left notch 12, and the direction ( Figure 1 The front-to-back direction (a) is referred to as the width direction of the left notch portion 12.
[0036] The right notch 13 and the rear notch 14 are formed in substantially the same shape as the left notch 12. Thus, a pair of front-to-back facing surfaces are formed in the right notch 13. In addition, a pair of left-to-right facing surfaces are formed in the rear notch 14.
[0037] Thus, a pair of facing surfaces extending linearly leftward and rightward are formed in the left notch portion 12 and the right notch portion 13, respectively. In addition, a pair of facing surfaces extending linearly frontward and rearward are formed in the rear notch portion 14. That is, the facing surfaces of the rear notch portion 14 are formed to extend in a direction orthogonal to the facing surfaces of the left notch portion 12 and the right notch portion 13.
[0038] In the two plates 10 used for the optical component 1, each notch of the lower plate 10D described below is an embodiment of the first notch of the present application. In addition, each notch of the upper plate 10U described below is an embodiment of the second notch of the present application.
[0039] The size of the plate 10 of the present embodiment is not particularly limited, and is assumed to be, for example, about 100 mm to 140 mm in length and about 130 mm to 200 mm in width. In addition, the thickness of the plate 10 is not particularly limited, and is assumed to be about 0.5 mm to 2 mm. In addition, the size of each notch formed in the plate 10 is not particularly limited, and is assumed to be, for example, about 3 mm to 9 mm in length (depth of the notch) in the longitudinal direction and about 2 mm to 8 mm in width.
[0040] The plate 10 of the present embodiment is formed into a bilaterally symmetrical shape. Therefore, the plate 10 can also be used with the front and back surfaces reversed (to manufacture the optical component 1).
[0041] The optical component 1 is formed by bonding the surfaces of the two plates 10 formed as described above in a state where the surfaces face each other (see Figure 1 (b)). At this time, the relative positions of the two plates 10 need to be matched with high accuracy. In this embodiment, the optical axis of the lens 11a of one plate 10 needs to be matched with the optical axis of the lens 11a of the other plate 10.
[0042] <Mold 20>
[0043] The plate 10 is manufactured by resin molding. Hereinafter, the molding die 20 for molding the plate 10 will be described.
[0044] Figure 2 The mold 20 shown is a mold for manufacturing the panel 10 by injection molding. The mold 20 mainly includes a lower mold 20D and an upper mold 20U. Since the lower mold 20D and the upper mold 20U have substantially the same structure, the structure of the lower mold 20D will be described below.
[0045] The lower mold 20D mainly includes a base portion 21 , a cavity block 22 and a side block 23 .
[0046] The base portion 21 is a portion where female blocks 22 and side blocks 23 described later are arranged. A recessed portion for arranging the female blocks 22 and the like is formed on the upper surface of the base portion 21 .
[0047] The female block 22 is a female block that forms a cavity C having a shape corresponding to the resin molded product (plate 10 ). A molded portion 22 a is formed in the female block 22 .
[0048] The molding portion 22a is a surface (resin molding surface) that faces the mold cavity C and is used to mold the resin molded product into a predetermined shape. The molding portion 22a is formed on the upper surface of the female block 22. The molding portion 22a has a shape corresponding to the shape of the lens 11a of the plate 10 (a shape in which hemispherical recesses are arranged in a regular pattern).
[0049] The side block 23 forms a side portion of the cavity C. The side block 23 is formed in a frame shape in a plan view. Specifically, the side block 23 has a through hole in the center portion in a plan view in which the female block 22 can be arranged. The side block 23 has a protrusion 23 a.
[0050] The protruding portion 23a is a portion that protrudes toward the inside of the side block 23. The protruding portion 23a has a shape corresponding to each notch portion of the plate 10 (the left notch portion 12, the right notch portion 13, and the rear notch portion 14).
[0051] A side block 23 is disposed in the recessed portion of the base portion 21 , and a female block 22 is further disposed inside the side block 23 .
[0052] The upper mold 20U has substantially the same structure as the lower mold 20D (a structure in which the lower mold 20D is turned upside down). Therefore, each structure of the upper mold 20U is denoted by the same reference numerals as the corresponding structure of the lower mold 20D, and description thereof is omitted.
[0053] The lower mold 20D and the upper mold 20U are disposed face to face up and down to form a cavity C corresponding to the plate 10. The molding die 20 is formed with a runner portion and a gate portion (not shown) for introducing resin into the cavity C.
[0054] The plate 10 is manufactured by injection molding using the molding die 20 configured as described above. Since the two plates 10 constituting the optical component 1 are manufactured by the common molding die 20, they have the same shape.
[0055] <Assembly jig 100>
[0056] The optical component 1 can be manufactured by bonding the two plates 10 manufactured as described above to each other. Next, the assembly jig 100 used when bonding the two plates 10 will be described.
[0057] Figure 3 The assembly fixture 100 shown mainly includes: a base portion 110, a short support 120, a long support 130, a first positioning member 140, a second positioning member 150, a third positioning member 160 and a clamping plate 170 (refer to Figure 8 ).
[0058] The base portion 110 is used to support the short support column 120 and the long support column 130 described later. The base portion 110 is formed in a rectangular plate shape.
[0059] Figure 3 and Figure 5 The short support 120 shown is used to support the plate 10 from below. The short support 120 is formed in a cylindrical shape. The short support 120 is fixed to the upper surface of the base portion 110 in a state where the axis is facing up and down. Thus, the short support 120 is configured to protrude upward from the base portion 110. The upper end surface of the short support 120 is formed in a flat shape.
[0060] A plurality of short pillars 120 are provided on the base 110. The lengths of the plurality of short pillars 120 (the height from the upper surface of the base 110 to the upper end of the short pillars 120) are formed to be the same length. The plurality of short pillars 120 are arranged at appropriate intervals in the front-to-back direction and the left-to-right direction. In the example shown, the short pillars 120 are arranged in four rows in the front-to-back direction and in four rows in the left-to-right direction. Figure 5 As shown, the short support column 120 is arranged in a range corresponding to the optical element section 11 of the plate 10 in a plan view. The short support column 120 is one embodiment of the first support column of the present application.
[0061] Figure 3 and Figure 5 The long support 130 shown is a long support for roughly positioning the plate 10 supported by the short support 120. The long support 130 is formed in a cylindrical shape. The long support 130 is fixed to the upper surface of the base 110 in a state where the axis is directed up and down. Thus, the long support 130 is configured to protrude upward from the base 110.
[0062] A plurality of long pillars 130 (three in this embodiment) are provided on the base 110. The length of the plurality of long pillars 130 (the height from the upper surface of the base 110 to the upper end of the long pillars 130) is formed to be longer than the length of the short pillars 120. Figure 5 As shown, two of the three long pillars 130 are arranged to be arranged side by side behind the short pillar 120. The remaining one of the three long pillars 130 is arranged to the right of the short pillar 120. The plate 10 supported by the short pillar 120 can be positioned by making the three long pillars 130 contact the rear end surface and the right end surface of the plate 10, respectively. In addition, the long pillar 130 is an embodiment of the second pillar of the present application.
[0063] Figure 3 and Figure 5 The first positioning member 140 is a positioning member for positioning the board 10 by contacting the left notch portion 12 of the board 10. The first positioning member 140 mainly includes: a bottom portion 141, a cylindrical portion 142 and a contact portion 143.
[0064] The bottom portion 141 is a portion forming the lower portion of the first positioning member 140. The bottom portion 141 is formed in a disk shape.
[0065] The cylindrical portion 142 is a portion formed to protrude upward from the bottom portion 141. The cylindrical portion 142 is formed on the upper surface of the bottom portion 141 with its axis oriented vertically.
[0066] The contact portion 143 is a cylindrical portion that contacts the plate 10. The contact portion 143 is formed by processing (cutting, etc.) the upper end of the cylindrical portion 142 in a manner to obtain a desired diameter. The diameter of the contact portion 143 is formed to correspond to the width of the left notch portion 12 of the plate 10 (the distance between the facing surface 12a and the facing surface 12b). Specifically, the width of the left notch portion 12 of the plate 10 manufactured using the forming die 20 in the front-back direction is measured to determine the diameter of the contact portion 143 so that the contact portion 143 is in point contact with the facing surface 12a and the facing surface 12b of the left notch portion 12. In this embodiment, the diameter of the contact portion 143 is adjusted so that the gap between the left notch portion 12 and the contact portion 143 is less than 3 μm. In this way, the contact portion 143 is processed (actually matched) in a manner to obtain a diameter that matches the actual diameter of the left notch portion 12 of the plate 10, thereby accurately positioning the plate 10.
[0067] The second positioning member 150 is a positioning member for positioning the plate 10 by contacting the right notch portion 13 of the plate 10. The second positioning member 150 mainly includes: a bottom 151, a cylindrical portion 152 and a contact portion 153. The diameter of the contact portion 153 is formed to correspond to the width of the right notch portion 13 of the plate 10. In addition, the structure of the other second positioning member 150 is the same as that of the first positioning member 140, so the detailed description is omitted.
[0068] The third positioning member 160 is a positioning member for positioning the plate 10 by contacting the rear notch portion 14 of the plate 10. The third positioning member 160 mainly includes: a bottom portion 161, a cylindrical portion 162, and a contact portion 163. The diameter of the contact portion 163 is formed to correspond to the width of the rear notch portion 14 of the plate 10. In addition, the structure of the other third positioning member 160 is the same as that of the first positioning member 140, so the detailed description is omitted.
[0069] Figure 8The clamping plate 170 shown is a weight for applying a load when joining two plates 10. The clamping plate 170 is formed in a plate shape that is the same size as the plate 10 or a size smaller than the plate 10. The clamping plate 170 is preferably formed in a shape that can at least cover the optical element part 11 so that the warping of the optical element part 11 formed on the plate 10 can be easily corrected. The clamping plate 170 is formed to have a weight that can correct the degree of warping of the two plates 10. In addition, the clamping plate 170 is an embodiment of the weight of the present application.
[0070] <Method for manufacturing optical component 1>
[0071] Hereinafter, a method for manufacturing the optical component 1 (a method for bonding two plates 10 ) using the assembly jig 100 configured as described above will be described. Fig. 9 , a flowchart showing a method for manufacturing an optical component 1 is shown. In addition, in the following description, in order to distinguish the two plates 10, the two plates 10 are sometimes referred to as a lower plate 10D and an upper plate 10U, respectively. In addition, the lower plate 10D and the upper plate 10U are one embodiment of the first plate and the second plate of the present application, respectively.
[0072] First, prepare the two plates 10 and the assembly fixture 100 ( Fig. 9 The two plates 10 are manufactured by injection molding using the molding die 20. In addition, the contact portion 143 (refer to Figure 5 ) is processed into a diameter corresponding to the width of the left notch 12 of the plate 10 manufactured by the forming die 20. The second positioning member 150 and the third positioning member 160 are similarly processed into diameters corresponding to the widths of the right notch 13 and the rear notch 14, respectively.
[0073] Furthermore, when the optical component 1 is repeatedly manufactured, the diameter of the contact portion of each positioning member (for example, the contact portion 143 of the first positioning member 140) may be adjusted only once at the beginning. For example, since it is assumed that the shapes of the plates 10 manufactured using the same forming mold 20 are the same, the diameter of the contact portion of each positioning member is adjusted only once at the beginning, thereby reducing the workload. However, in the case of using plates 10 of different batches or using plates 10 manufactured using different forming molds 20, it is ideal to re-adjust the diameter of the contact portion of each positioning member.
[0074] Next, the lower plate 10D is placed on the assembly jig 100 ( Fig. 9 Specifically, Figure 4 and Figure 5As shown, the lower plate 10D is placed on the short support 120. In this state, the rear end surface and the right end surface of the lower plate 10D are brought into contact with the long support 130. Thus, the lower plate 10D on the short support 120 can be roughly positioned.
[0075] At this time, the short support 120 supports the optical element section 11 of the lower plate 10D from below. Since a large number of tiny hemispherical lenses 11a are formed on the optical element section 11, the upper end surface of the short support 120 contacts (point-contacts) a point on the spherical surface of the plurality of lenses 11a. In this way, the short support 120 supports the lower plate 10D in a state of point-contacting with the lens 11a of the lower plate 10D, thereby suppressing warping, bending, shaking, etc. of the lower plate 10D.
[0076] Next, an adhesive is applied to the lower plate 10D ( Fig. 9 Specifically, the adhesive is applied to the upper surface of the lower plate 10D except for the optical element portion 11. In the present embodiment, the adhesive is applied to the entire circumference of the lower plate 10D along the outer circumference.
[0077] In this embodiment, it is assumed that an ultraviolet curing adhesive is used as the adhesive, but the type of adhesive can be changed arbitrarily. However, as described later, it takes some time to align the upper plate 10U with the lower plate 10D, so it is preferable to use an adhesive (ultraviolet curing type, heat curing type, pressure sensitive type, etc.) whose curing (solidification) time can be adjusted arbitrarily.
[0078] Next, the positioning members ( Fig. 9 Specifically, Figure 5 and Figure 6 As shown, a first positioning member 140 is placed on the upper surface of the base portion 110, and a contact portion 143 of the first positioning member 140 is inserted into the left notch portion 12 of the lower plate 10D. Since the diameter of the contact portion 143 is adjusted in a manner that matches the actual size (width) of the left notch portion 12, the contact portion 143 contacts (makes point contact) with one point of a pair of opposing surfaces 12a and 12b located in front and behind the left notch portion 12, respectively. In addition, at this time, the position of the first positioning member 140 is adjusted in a manner that the contact portion 143 does not contact the end surface (right end surface) on the inner side of the left notch portion 12. In this way, the relative movement of the first positioning member 140 and the lower plate 10D in the front-to-back direction is restricted by the contact portion 143 contacting the pair of opposing surfaces 12a and 12b located in front and behind the left notch portion 12.
[0079] Similarly, the contact portion 153 of the second positioning member 150 is inserted into the right notch portion 13 of the lower plate 10D. The second positioning member 150 is inserted into the right notch portion 13, so that the relative movement of the second positioning member 150 and the lower plate 10D in the front-rear direction is restricted. In addition, the contact portion 163 of the third positioning member 160 is inserted into the rear notch portion 14 of the lower plate 10D. The third positioning member 160 is inserted into the rear notch portion 14, so that the relative movement of the third positioning member 160 and the lower plate 10D in the left-right direction is restricted.
[0080] In this way, by inserting each positioning component into the notch portions (the left notch portion 12 and the right notch portion 13, and the rear notch portion 14) formed in two directions orthogonal to each other, the horizontal movement of the lower plate 10D (specifically, the movement in the front-to-back direction and the left-to-right direction) can be limited and positioned.
[0081] Next, the positioning members ( Fig. 9 Specifically, Figure 7 As shown, the upper plate 10U is moved to the upper part of the lower plate 10D. Then, the contact part 143 of the first positioning member 140 is inserted into the left notch 12 of the upper plate 10U. Similarly, the second positioning member 150 and the third positioning member 160 are respectively inserted into the right notch 13 and the rear notch 14 of the upper plate 10U.
[0082] Here, the upper plate 10U and the lower plate 10D are formed by the same molding die 20 (see Figure 2 ), so the notches of the upper plate 10U and the lower plate 10D are formed to have the same size. Therefore, similarly to the lower plate 10D, a pair of facing surfaces of each notch of the upper plate 10U contacts each positioning member. In this way, the relative position of the upper plate 10U with respect to the lower plate 10D can be matched (positioned) by inserting each positioning member into each notch of the upper plate 10U and the lower plate 10D. In this embodiment, the optical axis of the lens 11a of the upper plate 10U can be made consistent with the optical axis of the lens 11a of the lower plate 10D.
[0083] Next, if Figure 8 As shown, a clamping plate 170 ( Fig. 9 Step S6). Then, with the clamping plate 170 placed on the upper plate 10U, the clamping plate 170 and the upper plate 10U are pressed downward so that the upper plate 10U contacts the lower plate 10D. At this time, the lens 11a formed on the lower surface of the upper plate 10U contacts the lens 11a formed on the upper surface of the lower plate 10D. In addition, at this time, the adhesive applied on the upper surface of the lower plate 10D adheres to the lower surface of the upper plate 10U.
[0084] Next, the adhesive is cured to bond the upper plate 10U and the lower plate 10D ( Fig. 9 Step S7). In this embodiment, the UV curing adhesive can be cured by irradiating with ultraviolet rays. Since the clamping plate 170 is placed on the plate 10, in this embodiment, ultraviolet rays are irradiated from the bottom of the plate 10. Since the plate 10 is placed on the short pillars 120, ultraviolet rays can be irradiated from the bottom of the plate 10 through the gaps between the short pillars 120. At this time, since the plate 10 is pressed by the clamping plate 170, the upper plate 10U and the lower plate 10D can be joined while correcting the warping or bending of the plate 10.
[0085] In addition, the method of irradiating ultraviolet rays is not limited to this. For example, the clamping plate 170 can be formed of a transparent raw material, or the shape or material of the clamping plate 170 can be changed by making it smaller, so that ultraviolet rays can be irradiated from above the plate 10.
[0086] In the present embodiment, since an ultraviolet curing adhesive is used, the adhesive is cured by irradiating ultraviolet rays. However, when other adhesives are used, they can be cured by a method corresponding to the adhesive.
[0087] Next, remove the clamping plate 170 and remove the positioning members ( Fig. 9 Step S8). Thus, two plates 10 bonded to each other can be obtained. That is, the optical component 1 can be manufactured. In addition, the optical component 1 can also be manufactured into a final product by removing the outer contour of the left notch 12, the right notch 13, and the rear notch 14.
[0088] As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, It can change suitably within the range of the technical idea of the invention described in a claim.
[0089] For example, in this embodiment, the optical component 1 is manufactured using the rectangular plate 10 , but the present invention is not limited thereto, and the shape of the plate 10 can be arbitrarily changed. For example, the optical component 1 can also be manufactured using the circular plate 10 .
[0090] In addition, in this embodiment, an example of using a plate 10 with lenses 11a formed on both sides to manufacture the optical component 1 is shown, but the present invention is not limited to this. For example, by bonding two plates 10 with lenses 11a formed only on one side, an optical component 1 with lenses 11a formed on both sides can also be manufactured.
[0091] In addition, in this embodiment, an example is shown in which the optical component 1 is manufactured using two plates 10 formed into the same shape using the same molding die 20, but the present invention is not limited to this. For example, the optical component 1 can also be manufactured using two plates 10 formed into the same shape using different molding dies 20. In addition, the optical component 1 can also be manufactured using two plates 10 having different shapes.
[0092] In addition, the structure of the forming mold 20 shown in this embodiment is an example, and the structure of the forming mold 20 for manufacturing the plate 10 is not particularly limited, and the various parts constituting the forming mold 20 can also be divided or integrated. For example, in this embodiment, an example in which the forming portion 22a is directly formed on the female module 22 is shown, but it is also possible to set a structure in which a member forming the forming portion 22a is prepared separately and installed on the female module 22.
[0093] In addition, in this embodiment, an example of bonding two plates 10 with an adhesive is shown, but the present invention is not limited to this, and various methods can be used to bond two plates 10. For example, bonding can also be performed by laser welding or by using fixing tools such as screws.
[0094] In addition, the forming die 20 illustrated in the present embodiment is an example, and the structure of the forming die 20 can be changed arbitrarily.
[0095] In addition, for example, it is also possible to perform the process of curing the adhesive ( Fig. 9 Before step S7), the process of checking whether the positions of the two plates 10 match each other is provided. As a method of checking, for example, there is a method as follows: a pattern (for example, a figure or a scale line, etc.) is set as a reference below the two plates 10 (the upper surface of the base 110), and it is checked whether the pattern is distorted when the two plates 10 are observed from above. When such a check is performed, the shape of the clamping plate 170 can be made smaller and any changes can be made so that the plates 10 can be observed from above.
[0096] In addition, in the present embodiment, an example is shown in which two plates 10 are bonded to manufacture the optical component 1 , but the present invention is not limited to this, and for example, three or more plates 10 may be bonded.
[0097] In addition, in this embodiment, an example is shown in which three notches (left notch 12, right notch 13, and rear notch 14) are formed in the plate 10, but the present invention is not limited thereto. That is, as long as at least two notches are formed along two directions orthogonal to each other, the number and position of the notches are not limited.
[0098] In addition, in this embodiment, an example of using cylindrical short pillars 120 and long pillars 130 is shown, but the shape of each pillar is not limited. That is, the short pillar 120 can be any shape as long as it can support the board 10. In addition, the long pillar 130 can be any shape as long as it can position the board 10.
[0099] In addition, the manufacturing method of the optical component 1 shown in this embodiment (refer to Fig. 9 ) is an example, and the order or content can be changed arbitrarily. For example, in the present embodiment, when the clamping plate 170 is placed on the upper plate 10U, the clamping plate 170 and the upper plate 10U are pressed downward to make the upper plate 10U contact with the lower plate 10D (step S6), but the upper plate 10U and the lower plate 10D can also be made to contact at the time point when the positioning members are respectively inserted into the respective notches of the upper plate 10U (step S5).
[0100] <Second embodiment>
[0101] Hereinafter, a method for manufacturing the optical component 1 according to the second embodiment (a method for bonding two plates 10 ) will be described.
[0102] In the method for manufacturing the optical component 1 of the second embodiment, as Fig.10 and Fig.11 As shown in FIG. 1 , a plate 10 is used on which the first convex portion 15 and the second convex portion 16 are formed. Hereinafter, the plate 10 according to the second embodiment will be described first.
[0103] In addition, the plate 10 of the second embodiment is different from the plate 10 of the first embodiment (see Figure 1 The main difference between the plate 10 of the second embodiment and the plate 10 of the first embodiment is that the first convex portion 15 and the second convex portion 16 are formed. Therefore, the following mainly describes the first convex portion 15 and the second convex portion 16. Figure 1 The same structures are marked with the same symbols, and the description is appropriately omitted.
[0104] The first protrusion 15 is a portion formed to protrude from the surface of the plate 10. The first protrusion 15 is formed in a ring shape that surrounds the optical element portion 11 from the outside. The first protrusion 15 is formed in a rectangular shape that is slightly larger than the optical element portion 11. The first protrusion 15 is formed seamlessly around the entire circumference of the optical element portion 11. That is, the first protrusion 15 is formed to be continuously connected to the outside of the optical element portion 11. The first protrusion 15 is formed to pass through the inner side of the notch portion (the left notch portion 12, the right notch portion 13, and the rear notch portion 14) formed in the plate 10. The height of the first protrusion 15 is formed to be substantially the same as the height of the optical element portion 11 (strictly speaking, it is formed to be slightly lower than the height of the optical element portion 11). The first protrusion 15 is formed on both sides of the plate 10.
[0105] The second convex portion 16 is formed to protrude from the surface of the plate 10. The second convex portion 16 is formed outside the first convex portion 15. The height of the second convex portion 16 is formed to be substantially the same as the height of the optical element portion 11 (strictly speaking, it is formed to be slightly lower than the height of the optical element portion 11). The second convex portion 16 mainly includes a notch side convex portion 16a and an outer peripheral side convex portion 16b.
[0106] The notch side protrusions 16a are formed around the notch portions (the left notch portion 12, the right notch portion 13, and the rear notch portion 14) formed on the plate 10. Specifically, the notch side protrusions 16a are formed along a pair of faces (opposite faces) of the notch portions. Fig.11 When describing the right notch portion 13 shown in (a), the notch side convex portion 16a is formed to extend left and right along a pair of faces (opposing faces) 13a and 13b facing each other front and back of the right notch portion 13. Furthermore, the right end portion of the notch side convex portion 16a is formed to extend front and back along the right end surface of the plate 10. In this way, the notch side convex portion 16a is formed in a substantially L-shape along the notch portion and the end surface of the plate 10.
[0107] The outer circumferential convex portion 16b is formed along the end surface of the plate 10. Specifically, the outer circumferential convex portion 16b is formed along the front and rear and left and right end surfaces of the plate 10 formed in a rectangular shape. The outer circumferential convex portion 16b is formed so as to be partially discontinuous. Specifically, as Fig.10 and Fig.11 As shown, a gap is provided between the outer peripheral side protrusion 16b and the notch side protrusion 16a to form a notch portion N. Notches N are also formed near corners (near vertices) of the rectangular plate 10. Notches N are also formed at other appropriate positions.
[0108] Furthermore, the first convex portion 15 and the second convex portion 16 are formed on both upper and lower surfaces of the plate 10. Since both upper and lower surfaces of the plate 10 are formed in the same shape, the plate 10 can be used by turning it upside down.
[0109] Next, the specific procedure of the manufacturing method of the optical component 1 of the second embodiment is described. In addition, the manufacturing method of the optical component 1 of the second embodiment is basically the same as that of the first embodiment (refer to Fig. 9 etc.), so the following mainly describes the differences from the first embodiment, and appropriately omits the description of the same points as the first embodiment.
[0110] In the second embodiment, when the adhesive is applied to the lower plate 10D ( Fig. 9 Step S3), such as Fig.12 As shown in FIG. 1 , an adhesive G is applied to the outer side of the first protrusion 15. Fig.12In FIG. 1 , the adhesive G applied to the lower plate 10D is shown by hatching.
[0111] In this case, the first convex portion 15 and the second convex portion 16 can be used as guides when applying the adhesive G. Specifically, a tool (for example, a syringe, etc.) used to apply the adhesive G is moved along the first convex portion 15 and the second convex portion 16, thereby facilitating the application operation.
[0112] Furthermore, by comparing the heights of the first convex portions 15 and the second convex portions 16 with the height of the adhesive G applied to the lower plate 10D, the amount of adhesive G applied can be grasped, and thus the amount of adhesive G applied can be easily adjusted.
[0113] In addition, the adhesive G can be prevented from flowing into the optical element section 11 side by the first convex portion 15 formed around the optical element section 11. Thus, the generation of defective products can be prevented. In addition, the adhesive G can be prevented from flowing out to the right notch section 13 and the like by the notch side convex portion 16a formed around the notch section (the right notch section 13 and the like). Thus, the adhesive G can be prevented from adhering to the positioning members (the first positioning member 140, the second positioning member 150, and the third positioning member 160), and the positioning accuracy can be prevented from being reduced.
[0114] After the adhesive G is applied, the positioning members ( Fig. 9 Step S4, step S5), then, place the clamping plate 170 on the upper plate 10U ( Fig. 9 In step S6), the upper plate 10U is brought into contact with the lower plate 10D. Thus, the lens 11a formed on the lower surface of the upper plate 10U is brought into contact with the lens 11a formed on the upper surface of the lower plate 10D.
[0115] At this time, the first protrusions 15 formed on the upper plate 10U and the lower plate 10D are arranged to face each other in the vertical direction. In addition, the second protrusions 16 formed on the upper plate 10U and the lower plate 10D are arranged to face each other in the vertical direction (see Fig.12 (b)) In addition to the first protrusion 15 formed on the inner side of the plate 10, the second protrusion 16 formed on the outer side of the plate 10 is arranged to face each other in the up-down direction, thereby preventing the two plates 10 from tilting relative to each other.
[0116] When the upper plate 10U and the lower plate 10D are brought into contact, the adhesive G applied to the lower plate 10D spreads between the upper plate 10U and the lower plate 10D. Thus, the adhesive G can be applied to a wide range around the optical element portion 11, and the occurrence of uneven bonding can be prevented.
[0117] At this time, the first convex portions 15 formed on the upper plate 10U and the lower plate 10D can prevent the adhesive G from flowing into the optical element portion 11. The notch-side convex portions 16a can prevent the adhesive G from flowing out to the notch portion (right notch portion 13, etc.).
[0118] In addition, the outer peripheral convex portion 16b formed on the upper plate 10U and the lower plate 10D can prevent the adhesive G from flowing out to the outside of the plate 10. As a result, the adhesive G can be spread inside the plate 10, so that the adhesive G can be efficiently applied to the plate 10. Furthermore, the notch portion N formed on the outer peripheral convex portion 16b can release the excess adhesive G, so that the adhesive G can be effectively prevented from flowing into the optical element portion 11 side.
[0119] As described above, the plate 10 of the second embodiment can prevent the occurrence of defects in the optical component 1 by restricting the flow of the adhesive G using the first convex portions 15 and the second convex portions 16 .
[0120] Furthermore, since the upper plate 10U and the lower plate 10D of the second embodiment are formed in the same shape, they can be manufactured by the same molding die 20 as in the first embodiment. This can reduce the initial investment for manufacturing the optical component 1.
[0121] In addition, since the upper and lower surfaces of the plate 10 are the same shape, the plate 10 can be turned upside down for use. Therefore, for example, if the plate 10 is warped after being formed, the quality of the optical component 1 can be maintained and improved by using the plate 10 in any direction corresponding to the warped direction.
[0122] The second embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment and can be appropriately modified within the scope of the technical concept of the invention described in the claims. In addition to appropriate modifications in the first embodiment, for example, the following modifications are also possible.
[0123] In the second embodiment, an example is shown in which the heights of the first convex portion 15 and the second convex portion 16 are formed to be substantially the same as the height of the optical element portion 11. However, Fig.13 As in the first modification shown in (a), the height of the first convex portion 15 and the second convex portion 16 can also be formed to be lower than the height of the optical element portion 11. In this case, when the upper plate 10U is placed on the lower plate 10D, the lens 11a of the upper plate 10U contacts the lens 11a of the lower plate 10D. Therefore, a gap P1 is formed between the first convex portion 15 and the second convex portion 16 facing each other in the vertical direction. The gap P1 is preferably set to be small to the extent that the adhesive G cannot flow.
[0124] In addition, if Fig.13As in the second modification shown in (b), the height of the first convex portion 15 and the second convex portion 16 can also be formed to be higher than the height of the optical element portion 11. In this case, when the upper plate 10U is placed on the lower plate 10D, the first convex portion 15 and the second convex portion 16 facing each other in the vertical direction are in contact with each other. Therefore, a gap P2 is formed between the lenses 11a facing each other in the vertical direction. For example, in the case where it is necessary to ensure the gap P2 of the lens 11a in terms of the design of the optical component 1, as shown in FIG. Fig.13 As in the example shown in (b), by setting the heights of the first convex portion 15 and the second convex portion 16 according to the gap P2, the gap P2 of the lens 11a can be easily ensured.
[0125] In the second embodiment, an example is shown in which the upper plate 10U and the lower plate 10D are formed in the same shape, but the present invention is not limited to this, and the upper plate 10U and the lower plate 10D can also be formed in different shapes. Fig.13 As in the third modification shown in (c), the first convex portion 15 and the second convex portion 16 can also be formed on only one of the two plates 10 (in Fig.13 (c) shows only the lower plate 10D). Although not shown in the figure, the first protrusion 15 may be formed on one of the plates 10 and the second protrusion 16 may be formed on the other plate 10 .
[0126] In addition, in the second embodiment, an example is shown in which the first convex portion 15 and the second convex portion 16 are formed on both sides of the plate 10, but the present invention is not limited to this. Fig.13 As in the lower plate 10D of the third modified example shown in (c), the first protrusion 15 and the like may be formed on only one surface (upper surface) of the lower plate 10D.
[0127] In addition, the shapes and arrangements of the first convex portions 15 and the second convex portions 16 illustrated in the second embodiment (see Fig.10 However, from the viewpoint of preventing the adhesive G from flowing into the optical element portion 11, the first convex portion 15 is preferably formed to be continuously connected over the entire circumference of the optical element portion 11.
[0128] In addition, the first convex portion 15 and the second convex portion 16 only need to be formed on at least one of the upper plate 10U and the lower plate 10D. In addition, the second convex portion 16 does not necessarily need to be formed on the plate 10.
[0129] <Third Embodiment>
[0130] Hereinafter, a method for manufacturing the optical component 1 according to the third embodiment will be described.
[0131] In the method for manufacturing the optical component 1 of the third embodiment, Fig.14As shown in FIG. 1 , the plate 10 formed with the first convex portion 15 and the second convex portion 16 is used in the same manner as in the second embodiment. In addition, the manufacturing method of the optical component 1 of the third embodiment is different from that of the first and second embodiments in that the plates 10 are joined by laser welding instead of using an adhesive. Therefore, the manufacturing method of the optical component 1 of the first embodiment (see FIG. 1 ) is described below. Fig. 9 ) Different processes (steps) are described, and descriptions of other processes are appropriately omitted.
[0132] In the third embodiment, after the lower plate 10D is arranged on the assembly jig 100 ( Fig.15 In step S2), without applying adhesive to the lower plate 10D, positioning members ( Fig.15 Then, the positioning members ( Fig.15 Step SS5), and place the clamping plate 170 ( Fig.15 Step S6).
[0133] Here, in the third embodiment, the plates 10 are joined by laser irradiation from above (see Fig.14 (b)). Therefore, in the third embodiment, the clamping plate 170 formed of a light-transmitting material (e.g., glass, etc.) is used so as not to block the laser irradiated from above. In addition, when the clamping plate 170 is arranged at a position that does not block the laser irradiated from above, or when the laser is irradiated from the bottom to the plate 10, the clamping plate 170 with light transmission is not necessarily used.
[0134] Next, if Fig.14 As shown in (b), the upper plate 10U and the lower plate 10D are laser welded by irradiating the upper plate 10U and the lower plate 10D from above. Fig.15 Here, in the case of laser welding, as shown in step S17, Fig.14 As shown, by irradiating the laser along the first convex portion 15 and the second convex portion 16, the first convex portion 15 etc. formed on the upper plate 10U and the first convex portion 15 etc. formed on the lower plate 10D are welded. Fig.14 In (a), an example of the irradiation position of the laser is shown by the dotted line W. In this way, by welding the first convex portion 15 and the second convex portion 16 disposed vertically to face each other, the upper plate 10U and the lower plate 10D can be joined.
[0135] Here, in the third embodiment, a long-wavelength laser (for example, a laser with a wavelength of 2 μm) is used. By using a long-wavelength laser, the transparent plate 10 can absorb the laser and perform welding. In addition, when a short-wavelength laser (for example, a laser with a wavelength of 1 μm) is used, for example, by pre-coating a light absorbing material such as carbon on the welding portion (the surface where the first convex portion 15 and the second convex portion 16 face each other), the plate 10 can be welded.
[0136] Next, remove the clamping plate 170 and remove the positioning members ( Fig.15 Step S8). Thus, two plates 10 bonded to each other can be obtained. That is, the optical component 1 can be manufactured.
[0137] As described above, in the third embodiment, since the plates 10 are joined by laser welding, unlike the case where an adhesive is used, it is possible to prevent the adhesive from flowing into the optical element portion 11 or uneven bonding. In addition, since the time required to cure the adhesive is not required, the manufacturing time of the optical component 1 can be shortened. In addition, there is no concern that the plates 10 will separate from each other due to deterioration of the adhesive.
[0138] In particular, in the third embodiment, since the first convex portions 15 are laser-welded, the plates 10 can be evenly joined at positions close to the optical element portion 11 compared to the second embodiment. Thus, the optical component 1 can be manufactured with high precision. In addition, in the third embodiment, since the notch-side convex portions 16a are laser-welded, the plates 10 can be evenly joined at positions close to the right notch portion 13, etc. compared to the second embodiment. Thus, the plates 10 can be positioned with better precision.
[0139] In the third embodiment, not only the first convex portion 15 but also the second convex portions 16 (the outer convex portions 16b, etc.) are laser welded, so the plates 10 can be more firmly joined. In addition, by providing the notch portion N in the outer convex portion 16b, the heat during laser welding can be released to the outside of the plate 10, and the occurrence of abnormality (deformation, etc.) of the plate 10 can be suppressed.
[0140] The third embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and can be appropriately modified within the scope of the technical concept of the invention described in the claims. In addition to appropriate changes in the first and second embodiments, for example, the following modifications are also possible.
[0141] In the third embodiment, an example is shown in which the plate 10 having the first convex portion 15 and the second convex portion 16 formed thereon as in the second embodiment is used and the convex portions are laser welded to each other, but the present invention is not limited thereto. That is, the present invention is not limited to the shape or arrangement of the convex portions as long as the convex portions can join the plates 10 to each other.
[0142] For example, in Fig.14 In the example shown, the first convex portion 15 surrounding the optical element portion 11 and the second convex portion 16 arranged outside the first convex portion 15 are shown, but Fig.16 As in the fourth modification shown in (a), only the convex portion 17 surrounding the optical element portion 11 from the periphery may be formed on the plate 10 .
[0143] In addition, Fig.16 In the fourth modification shown in (a), the convex portion 17 is formed to be continuously connected over the entire circumference of the optical element portion 11, but Fig.16 As in the fifth modification shown in (b), discontinuous protrusions 18 can also be formed on the plate 10 .
[0144] In addition, regarding the third embodiment, similarly to the second embodiment, the shape of the plate 10 (the height of the protrusion, the presence or absence of the protrusion on each plate 10, etc.) can be arbitrarily changed (see Fig.13 ).
[0145] <Note>
[0146] The manufacturing method of the optical component 1 according to the first aspect of the present disclosure is as follows:
[0147] A method for manufacturing an optical component 1 by bonding two or more plates 10 having an optical element portion 11 to manufacture the optical component 1, comprising:
[0148] The first positioning process ( Fig. 9 Step S4), the positioning members (the first positioning member 140, the second positioning member 150 and the third positioning member 160) are brought into contact with a first plate (the lower plate 10D) having at least two first notches (the left notch 12 and the right notch 13, and the rear notch 14) formed in two directions orthogonal to each other, and a pair of facing surfaces of each first notch facing each other;
[0149] The second positioning process ( Fig. 9 Step 5), the alignment member is brought into contact with a pair of facing surfaces of the second plate (upper plate 10U) having at least two second notches (left notch 12 and right notch 13, and rear notch 14) formed in two directions orthogonal to each other, and the second notches; and
[0150] Bonding process ( Fig. 9In step S7), the first plate and the second plate are bonded.
[0151] According to the manufacturing method of the optical component 1 of the first aspect of the present disclosure, the plates 10 can be aligned with each other with good accuracy. That is, the two plates 10 can be relatively positioned by bringing the positioning member into contact with a pair of facing surfaces of the notches formed in the two plates 10. In addition, since the positioning can be performed relatively easily, the workload can be reduced.
[0152] According to the method for manufacturing the optical component 1 of the second aspect of the first aspect, wherein:
[0153] Including the loading process ( Fig. 9 In step S2), the placing step is performed before the first positioning step, placing the first plate on a plurality of first pillars (short pillars 120).
[0154] According to the method for manufacturing the optical component 1 of the second aspect of the present disclosure, a space can be secured below the first plate (the gap between the short pillars 120 ), thereby enabling ultraviolet irradiation or confirmation of the plate 10 from below, thereby improving workability.
[0155] According to the method for manufacturing the optical component 1 of the third aspect of the second aspect, wherein:
[0156] The optical element portion 11 includes a plurality of lenses 11a formed on the lower surface of the first plate.
[0157] In the placement step, the first plate is arranged so that the lens 11 a is in contact with the first support column.
[0158] According to the method for manufacturing the optical component 1 of the third aspect of the present disclosure, the first support pillar contacts (makes point contact with) a single point on the spherical surface of the lens 11 a , and thus warping, bending, shaking, and the like of the first plate can be suppressed.
[0159] The manufacturing method of the optical component 1 according to the fourth aspect of the second aspect or the third aspect, wherein:
[0160] In the placing step, the first plate is placed so that the end surface thereof contacts a second support (long support 130 ) different from the first support.
[0161] According to the method for manufacturing the optical component 1 of the fourth aspect of the present disclosure, the first plate can be roughly positioned by the second support pillars, thereby enabling the first plate to be arranged at a normal position and improving workability.
[0162] A fifth aspect of the method for manufacturing an optical component 1 according to any one of the second to fourth aspects, wherein:
[0163] Including heavy object placement process (refer to Fig. 9 In step S6), the weight configuration process is performed after the second positioning process and before the joining process, and a weight (clamping plate 170) is placed on the first plate and the second plate.
[0164] By the method for manufacturing the optical component 1 according to the fifth aspect of the present disclosure, the warping or bending of the plate 10 can be corrected.
[0165] A sixth aspect of the method for manufacturing an optical component 1 according to any one of the first to fifth aspects, wherein:
[0166] The optical element portion 11 includes a plurality of lenses 11 a formed on both surfaces of the plate 10 .
[0167] According to the method for manufacturing the optical component 1 according to the sixth aspect of the present disclosure, the plates 10 having the lenses 11 a formed on both surfaces can be accurately aligned with each other.
[0168] According to the method for manufacturing the optical component 1 of the seventh aspect of the sixth aspect, wherein:
[0169] The first notch portion and the lens 11 a of the first plate, and the second notch portion and the lens 11 a of the second plate are formed by resin molding using the same molding die 20 .
[0170] According to the manufacturing method of the optical component 1 of the seventh aspect of the present disclosure, by using the same molding die 20 to manufacture two plates 10, the sizes of the two plates 10 can be made the same, and the plates 10 can be accurately aligned with each other. In addition, since the relative positional relationship between the lens 11a and each notch is constant, the optical axes of the lenses 11a of the plurality of plates 10 can be accurately aligned.
[0171] The manufacturing method of the optical component 1 according to an eighth aspect of any one of the first aspect to the seventh aspect, wherein:
[0172] At least one of the first plate and the second plate has a first protrusion 15 formed in an annular shape surrounding the optical element portion 11 from the outside.
[0173] In the bonding process ( Fig. 9 In step S7), the first plate and the second plate are bonded together by applying an adhesive to the outer side of the first protrusion 15.
[0174] According to the method for manufacturing the optical component 1 of the eighth aspect of the present disclosure, it is possible to prevent the adhesive from flowing into the optical element portion 11 .
[0175] According to the method for manufacturing the optical component 1 of the ninth aspect of the eighth aspect, wherein:
[0176] At least one of the first plate and the second plate has a second convex portion 16 formed outside the first convex portion 15 .
[0177] According to the method for manufacturing the optical component 1 of the ninth aspect of the present disclosure, the flow of the adhesive is restricted by the second protrusions 16, thereby preventing defects in the optical component 1. Furthermore, by forming the second protrusions 16 in addition to the first protrusions 15, the two plates 10 can be prevented from tilting relative to each other.
[0178] According to the method for manufacturing the optical component 1 of the tenth aspect of the ninth aspect, wherein:
[0179] The second protrusion 16 includes a notch-side protrusion 16 a formed around the first notch and the second notch.
[0180] The method for manufacturing the optical component 1 according to the tenth aspect of the present disclosure can prevent the adhesive G from adhering to the positioning members (the first positioning member 140 , the second positioning member 150 , and the third positioning member 160 ) or prevent the positioning accuracy from decreasing.
[0181] According to the eleventh aspect of the method for manufacturing the optical component 1 of any one of the first aspect to the seventh aspect of the present disclosure, wherein:
[0182] The first plate and the second plate have welding protrusions (first protrusions 15 and second protrusions 16) formed on the outer side of the optical element section 11.
[0183] In the bonding process ( Fig.15 In step S17), the welding protrusion formed on the first plate and the welding protrusion formed on the second plate are laser welded.
[0184] The manufacturing method of the optical component 1 according to the eleventh aspect of the present disclosure can prevent the adhesive from flowing into the optical element portion 11 or causing uneven bonding, unlike when using an adhesive. In addition, since the time required to cure the adhesive is not required, the manufacturing time of the optical component 1 can be shortened.
[0185] Description of Figure Numbers
[0186] 1: Optical parts
[0187] 10: Board
[0188] 10D: Lower board (first board)
[0189] 10U: Upper board (second board)
[0190] 11: Optical Components Department
[0191] 11a: Lens
[0192] 12: Left notch
[0193] 13: Right notch
[0194] 14: Rear notch
[0195] 15: The first convex part
[0196] 16: Second convex part
[0197] 16a: Notch side convex part
[0198] 16b: Outer peripheral convex part
[0199] 20: Forming die
[0200] 100: Assemble the fixture
[0201] 120: Short pillar
[0202] 130: Long pillar
[0203] 140: First positioning member
[0204] 150: Second positioning member
[0205] 160: The third positioning member
[0206] 170: Splint
Claims
1. A method for manufacturing an optical component, comprising bonding two or more plates having an optical element portion to manufacture the optical component, The manufacturing method of the optical component comprises: A first positioning step of bringing the positioning member into contact with a first plate having at least two first notches formed in two directions orthogonal to each other, and a pair of facing surfaces of each first notch facing each other; a second positioning step of bringing the positioning member into contact with both of a pair of facing surfaces of the second notch portions of the second plate having at least two second notch portions formed in two directions orthogonal to each other, and the second notch portions facing each other; and The bonding step is to bond the first plate and the second plate.
2. The method for manufacturing an optical component according to claim 1, wherein: The method includes a placing step of placing the first plate on a plurality of first pillars before the first positioning step.
3. The method for manufacturing an optical component according to claim 2, wherein: The optical element section includes a plurality of lenses formed on the lower surface of the first plate, In the placement step, the first plate is arranged so that the lens is in contact with the first support column.
4. The method for manufacturing an optical component according to claim 2 or 3, wherein: In the placing step, the first plate is placed so that an end surface thereof contacts a second support column different from the first support column.
5. The method for manufacturing an optical component according to any one of claims 2 to 4, wherein: The method comprises a weight placement step, wherein the weight is placed on the first plate and the second plate after the second positioning step and before the bonding step.
6. The method for manufacturing an optical component according to any one of claims 1 to 5, wherein: The optical element portion includes a plurality of lenses formed on both surfaces of the plate.
7. The method for manufacturing an optical component according to claim 6, wherein: The first notch portion and the lens of the first plate, and the second notch portion and the lens of the second plate are formed by resin molding using the same molding die.
8. The method for manufacturing an optical component according to any one of claims 1 to 7, wherein: At least one of the first plate and the second plate has a first protrusion formed in an annular shape surrounding the optical element portion from the outside, In the bonding step, the first plate and the second plate are bonded together using an adhesive applied to the outer sides of the first protrusions.
9. The method for manufacturing an optical component according to claim 8, wherein: At least one of the first plate and the second plate has a second convex portion formed outside the first convex portion.
10. The method for manufacturing an optical component according to claim 9, wherein: The second protrusion includes a notch-side protrusion formed around the first notch and the second notch.
11. The method for manufacturing an optical component according to any one of claims 1 to 7, wherein: The first plate and the second plate have welding protrusions formed on the outer side of the optical element portion. In the joining step, the welding protrusions formed on the first plate and the welding protrusions formed on the second plate are welded by laser.