Step type jig for gluing multiple lenses

Abstract

The utility model belongs to the field of multi-plane mirror gluing, and discloses a step-type jig for multi-lens gluing. The step-type jig comprises a jig main body, a movable anti-warping platen and screws, two steps are arranged on the jig main body, and each of the two steps comprises n steps and ngt; 3, the n steps of the steps are obliquely distributed along 45 degrees, the two steps are arranged side by side at intervals, and the positions of the steps of the two steps correspond to each other; a first threaded hole is formed in the position, at the interval of the two steps, of the jig body, a second threaded hole is formed in the movable anti-warping-pressing platen, and a screw enables the movable anti-warping-pressing platen to be installed on the jig body through the first threaded hole and the second threaded hole. And the movable anti-warping pressing bedplate applies an external force to a first lens in the multi-lens gluing, wherein the external force enables the first lens to be attached to the jig main body. According to the utility model, an included angle of 45 + / -0.05 degrees is formed between the bonding surface and the outer circular surface.

Description

Technical Field

[0001] The utility model belongs to the field of multi-plane mirror gluing, and in particular relates to a step-type fixture used for gluing multiple lenses. Background Art

[0002] The gluing process of optical parts refers to the process of bonding two or more lenses, prisms or plane mirrors with matching optical surfaces into complex optical components using optical glue or optical adhesive in accordance with certain technical requirements.

[0003] In actual production, gluing has two technical requirements: one is to ensure the center error or angle error. For lenses, the center error of the lens must be ensured; for prisms or plane mirrors, the optical parallelism of the lens must be ensured. The second is to ensure that the glued surface achieves "zero defect" gluing, that is, to ensure that the requirements for surface defects of the glued polished surface are not reduced due to gluing, and at the same time, the shape of the non-glued surface is not affected by gluing.

[0004] In the bonding process of optical parts, after bonding multiple lenses, the bonding sides need to be polished, coated, and cut to meet special optical properties. This process finally needs to meet the parallelism between the bonding surfaces after bonding multiple lenses. The most critical thing is that the bonding surface must be at a 45° angle with the bottom polished surface, and the tolerance must meet ±0.05°.

[0005] At present, in the existing gluing process, gluing is the last one or two steps of optical cold processing. After gluing, only the outer circle is painted or cut, and no polishing, coating, cutting and other processes are performed. There are the following defects: 1. Generally, only two lenses are bonded, and at most three lenses can be bonded; 2. After gluing, only the parallelism between the lenses needs to be met, and only the uniformity of the glue layer is concerned; 3. After the lens is bonded, the outer circle will not be polished, coated, cut and other processes; 4. The bonding surface and the outer circle surface (polished surface) will not form a 45° angle.

[0006] The above four defects of the existing gluing process determine that after processing and gluing multiple lenses, the following requirements cannot be met: 1. The parallelism after gluing is ≤0.05; 2. The angle between the bonding surface and the outer cylindrical surface (polished surface) is 45°±0.05°; 3. The glue on the glue surface can withstand continued processing of multiple steps. Utility Model Content

[0007] The utility model aims to provide a step-type fixture for gluing multiple lenses, which realizes that the bonding surface and the outer cylindrical surface (polishing surface) form an angle of 45°±0.05°.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A step-type jig for gluing multiple lenses, comprising a jig body, a movable anti-warping pressure plate and screws;

[0010] The fixture body is provided with two steps, each of which includes n steps, and n>3, the n steps of the steps are distributed along a 45° inclination, the two steps are spaced apart and arranged side by side, and each step position of the two steps corresponds;

[0011] The jig body is provided with a first threaded hole at the interval between two steps, and the movable anti-warping pressure platen is provided with a second threaded hole. The screw installs the movable anti-warping pressure platen on the jig body through the first threaded hole and the second threaded hole. When the movable anti-warping pressure platen is installed on the jig body, the movable anti-warping pressure platen applies an external force to the first lens in the multi-lens bonding so that the first lens fits the jig body.

[0012] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0013] Preferably, the tread width of the first step of the stairs is greater than the vertical height, the tread widths of the remaining steps are equal to the vertical height, and the tread width of the first step of the stairs is greater than the width of the lens.

[0014] Preferably, a recessed avoidance groove is provided at the intersection of the tread and the facade of the stair step.

[0015] Preferably, the vertical height of the steps is smaller than the thickness of the lens.

[0016] Preferably, the second threaded hole is a waist-shaped hole, and the length direction of the waist-shaped hole is perpendicular to the vertical surface of the step.

[0017] Preferably, the movable anti-warping pressing platen includes a pressing platen body and a pressing tongue, the pressing tongue is connected to the top of the pressing platen body, and the second threaded hole is located on the pressing platen body;

[0018] When the movable anti-warping pressing platen is installed on the jig body, the pressing platen body is installed close to the jig body, and the pressing tongue is close to the first lens and applies external force.

[0019] Preferably, a protective pad is attached to the bottom of the movable anti-warping pressure plate.

[0020] Preferably, two movable anti-warping pressure plates are provided, and the number of the first threaded holes, the movable anti-warping pressure plates and the screws is the same.

[0021] The utility model provides a step-type fixture for gluing multiple lenses. The multiple lenses are glued together by arranging steps along a 45° inclined distribution, so that the angle tolerance of the multiple lenses after gluing can be accurately controlled within ±0.05°; the movable anti-warping pressure table can be freely disassembled and fixed, which is convenient for fixing operations during calibration; in addition, the utility model uses the fixture to perform high-reliability gluing of multiple lenses, so that the glued lenses can be polished, coated, and cut, and the glue layer can still meet performance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an exploded view of the first structure of a step-type fixture for gluing multiple lenses according to the utility model;

[0023] Figure 2 It is a schematic structural diagram of a step-type fixture for gluing multiple lenses according to the utility model;

[0024] Figure 3 It is a cross-sectional view of a step-type fixture for gluing multiple lenses according to the present invention;

[0025] Figure 4 This is an exploded view of the second structure of a step-type fixture for gluing multiple lenses according to the utility model.

[0026] In the figure: 1. fixture body; 11. step; 12. first threaded hole; 13. avoidance groove; 2. screw; 3. movable anti-warping pressure plate; 31. pressure plate body; 32. pressure tongue; 4. protective pad. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that when a component is referred to as being “connected” to another component, it may be directly connected to the other component or there may be a central component; when a component is referred to as being “fixed” to another component, it may be directly fixed to the other component or there may be a central component.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] In order to solve the defects of the existing multi-lens gluing process, the present embodiment proposes a step-type jig for multi-lens gluing. Based on the step-type jig, the multi-lens gluing process can be effectively improved to achieve the gluing of 2, 3 or more lenses, and the angle error after gluing is controlled within ±0.05°. In addition, the glued lenses can be polished, coated and cut, and the glue layer can still meet the performance requirements.

[0031] like Figure 1 As shown, the step-type fixture for bonding multiple lenses in this embodiment includes a fixture body 1, a movable anti-warping pressure plate 3 and screws 2.

[0032] There are two steps 11 on the fixture body 1, and both steps 11 include n steps, and n>3. The n steps of the step 11 are distributed along a 45° inclination, and the two steps 11 are arranged side by side at intervals, and each step of the two steps 11 corresponds to each other. The step should be understood as a continuous ladder or step connecting two planes of different heights, and the step is each step in the step.

[0033] The present embodiment designs more than 3 steps, so that the step-type fixture can achieve the gluing of more than 3 lenses, overcoming the defect of the prior art that the gluing process is limited to 2 or 3 lenses. After the steps are arranged to be inclined along 45°, the angle error of multiple lenses glued by relying on the steps can be accurately controlled within ±0.05° after gluing, which fully meets the requirements of the multi-lens gluing process.

[0034] The two steps 11 are arranged side by side and spaced apart to ensure that both ends of a lens can be bonded to the steps of the two steps 11, respectively, and the middle of the lens is not in contact with the step-type jig, so as to reduce the wear of the lens surface during the bonding process. And each step position of the two steps 11 corresponds, that is, the side projections of the two steps 11 on the jig body 1 completely overlap.

[0035] In addition, in order to enhance the structural strength, the fixture body 1 of this embodiment includes a mounting plane parallel to the tread of the stairs and a back surface parallel to the vertical surface of the stairs. The backs of the two steps are connected to the back surface, and the bottoms of the two steps are connected to the mounting plane. In this embodiment, the tread of the stairs is perpendicular to the vertical surface.

[0036] like Figure 2-Figure 3As shown, the jig body 1 of this embodiment is provided with a first threaded hole 12 at the interval between the two steps 11, and the first threaded hole 12 is specifically provided on the mounting plane of the jig body 1. The movable anti-warping pressure plate 3 is provided with a second threaded hole, and the screw 2 installs the movable anti-warping pressure plate 3 on the jig body 1 through the first threaded hole 12 and the second threaded hole. When the movable anti-warping pressure plate 3 is installed on the jig body 1, the movable anti-warping pressure plate 3 applies an external force to the first lens in the multi-lens bonding process to make the first lens adhere to the jig body 1.

[0037] Since the superposition of multiple lenses at 45° inclination may cause the entire lens to tilt, in order to prevent such inclination from affecting the gluing effect of the lenses, this embodiment uses a movable anti-warping platen 3 to press and limit the outer edge of the first lens, so that the first lens is completely attached to the jig body 1. Therefore, the first threaded hole 12 on the jig body 1 is set at a position close to the first step.

[0038] The tread width of the first step of step 11 ( Figure 3 X in the figure is greater than the elevation height ( Figure 3 Y in the figure), the tread widths of the remaining steps are equal to the elevation height, and the tread width of the first step of the step 11 is greater than the width of the lens. Since the first lens needs to be completely against the fixture body 1, and in order to avoid the bending of the first lens caused by the pressing of the movable anti-warping plate 3, the tread width of the first step is set to be greater than the width of the lens in this embodiment, and the support force provided by the tread of the step prevents the first lens from being damaged. In addition, the tread widths of the remaining steps are equal to the elevation height to ensure that the steps can be distributed at a 45° inclination.

[0039] It should be noted that the height of the facade or the width of the tread is the distance from the intersection of the facade and the tread to the edge of the facade or the tread.

[0040] In addition, since the right angle of the lens is easily damaged by collision, the present embodiment sets a recessed avoidance groove 13 at the intersection of the tread and the vertical surface of the step. The avoidance groove 13 allows the lens to be suspended at the right angle after the step is installed, which effectively avoids the lens from being damaged by contact with the fixture body 1. Furthermore, the present embodiment also sets the vertical surface height of the step to be less than the thickness of the lens, so that starting from the second lens, the bottom surface of the lens that is not in contact with other lenses is in a suspended state, reducing the damage to the mirror surface during the lens gluing process.

[0041] The movable anti-warping pressure platen 3 of this embodiment includes a pressure platen body 31 and a pressure tongue 32, the pressure tongue 32 is connected to the top of the pressure platen body 31, and the second threaded hole is located on the pressure platen body 31. The top here should be understood as the upper part of the pressure platen body 31, and it is only necessary to meet the requirement that the pressure tongue 32 can be pressed on the first lens after the pressure platen body 31 is installed on the fixture body 1. When the movable anti-warping pressure platen 3 is installed on the fixture body 1, the pressure platen body 31 is installed against the fixture body 1, and the pressure tongue 32 is pressed against the first lens and applies pressure.

[0042] In order to reduce the complexity of the operation during the lens gluing process, the second threaded hole is a waist-shaped hole, and the length direction of the waist-shaped hole is perpendicular to the vertical surface of the step. Based on the waist-shaped hole, when the screw is loosened (there is no need to completely unscrew the screw), the movable anti-warping pressure plate 3 can be moved forward and backward. After moving forward, the pressing tongue 32 presses on the first lens, and after moving backward, there is no contact between the pressing tongue 32 and the first lens, and the lens can be taken at will.

[0043] In order to prevent the pressure applied by the tongue 32 from bending and damaging the middle of the lens, two movable anti-warping pressure plates 3 are provided, and the number of the first threaded holes 12, the movable anti-warping pressure plates 3 and the screws 2 is the same. In addition, the first threaded holes 12 are respectively opened at positions close to the two steps 11, so that the tongue 32 applies pressure to both ends of the lens.

[0044] In other embodiments, the number of the first threaded hole 12, the movable anti-warping pressure platen 3 and the screws 2 can be adjusted as needed, such as three, four, etc. Of course, the movable anti-warping pressure platen 3 can also have a sufficient length, that is, the contact area between the pressure tongue 32 and the lens is large enough, and the contact surface extends along the steps on both sides. In this case, only one movable anti-warping pressure platen 3 is needed. In addition, the movable anti-warping pressure platen 3 of this embodiment can also be deformed in other ways. For example, instead of using a simple pressure tongue 32, a clamping structure is used to clamp the upper and lower surfaces of the lens to achieve the limit with the lens, that is, the focus of the movable anti-warping pressure platen 3 is to limit the first lens so that it is completely against the fixture body 1. The structure of the movable anti-warping pressure platen 3 can be deformed in many ways, and the pressure applied by the movable anti-warping pressure platen 3 to the first lens is not limited.

[0045] like Figure 4 As shown, in order to protect the entire fixture, a protective pad 4 is attached to the bottom of the movable anti-warping pressure platen 3 to reduce the wear between the movable anti-warping pressure platen 3 and the fixture body 1 during the disassembly and movement process. Of course, the protective pad 4 can also be attached to the part where the fixture body 1 contacts the movable anti-warping pressure platen 3.

[0046] This embodiment provides a step-type fixture, which can achieve the bonding of five or more lenses, and can achieve an angle of 45°±0.05° between the lenses after bonding and between the first and last lenses after accumulation.

[0047] The multi-lens gluing process of the step-type fixture provided in this embodiment is as follows: first, attach the face pad leather patch to the bottom panel of the movable anti-warping pressure platen; when bonding the first lens and the second lens, first apply glue between the first lens and the second lens, at this time the glue has not solidified, and place the first lens and the second lens after applying glue on the first step and the second step of the fixture body, adjust the position correction of the lens and the step to abut the complete lens, and after the position correction is completed, illuminate the glue to solidify it, so that the first lens and the second lens are bonded as one; when gluing the third and subsequent lenses, apply glue to the lenses, place the lenses after applying glue on the corresponding steps, and adjust the pressing tongue of the movable anti-warping pressure platen to press against the first lens, press 1mm of the lens surface, tighten the screws, correct the position of the lenses, and after the position correction is completed, illuminate the glue to solidify it, and complete the gluing of the third and subsequent lenses. This method achieves a 45° angle by only relying on the width and height of the steps. The accuracy of the fixture and the uniformity of the adhesive layer can meet the tolerance of ±0.05°. Double polishing, coating, cutting and finally the product are presented.

[0048] The advantages of the step-type fixture provided in this embodiment are: 1. The angle tolerance can be accurately controlled within ±0.05°; 2. The movable anti-warping table can be freely moved, which is convenient for fixed operation during calibration; 3. It also realizes that the adhesive layer can still meet the performance requirements after the bonding lens is polished, coated, and cut. In fact, many experiments were carried out and the final product was tested, and it all met the specification requirements.

[0049] In the present invention, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number or order of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A step-type fixture for gluing multiple lenses, characterized in that: The step-type fixture for gluing multiple lenses comprises a fixture body, a movable anti-warping pressure plate and screws; The fixture body is provided with two steps, each of which includes n steps, and n>3, the n steps of the steps are distributed along a 45° inclination, the two steps are spaced apart and arranged side by side, and each step position of the two steps corresponds; The jig body is provided with a first threaded hole at the interval between two steps, and the movable anti-warping pressure platen is provided with a second threaded hole. The screw installs the movable anti-warping pressure platen on the jig body through the first threaded hole and the second threaded hole. When the movable anti-warping pressure platen is installed on the jig body, the movable anti-warping pressure platen applies an external force to the first lens in the multi-lens bonding so that the first lens fits the jig body.

2. The step-type fixture for gluing multiple lenses according to claim 1, characterized in that: The tread width of the first step of the stairs is greater than the facade height, the tread widths of the remaining steps are equal to the facade height, and the tread width of the first step of the stairs is greater than the width of the lens.

3. The step-type fixture for gluing multiple lenses according to claim 1, characterized in that: An inwardly recessed avoidance groove is provided at the intersection of the tread and the facade of the stair step.

4. The step-type fixture for gluing multiple lenses according to claim 1, characterized in that: The vertical height of the steps is less than the thickness of the lens.

5. The step-type fixture for gluing multiple lenses according to claim 1, characterized in that: The second threaded hole is a waist-shaped hole, and the length direction of the waist-shaped hole is perpendicular to the vertical surface of the step.

6. The step-type fixture for gluing multiple lenses according to claim 1, characterized in that: The movable anti-warping pressing platen includes a pressing platen body and a pressing tongue, the pressing tongue is connected to the top of the pressing platen body, and the second threaded hole is located on the pressing platen body; When the movable anti-warping pressure platen is installed on the fixture body, the pressure platen body is installed close to the fixture body, and the pressure tongue is close to the first lens and applies external force.

7. The step-type fixture for gluing multiple lenses according to claim 1, characterized in that: A protective pad is attached to the bottom of the movable anti-warping pressure plate.

8. The step-type fixture for gluing multiple lenses according to claim 1, characterized in that: The movable anti-warping pressure platens are provided with two, and the number of the first threaded holes, the movable anti-warping pressure platens and the screws is the same.

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