Processing method of optical double-gluing piece

Abstract

The invention provides an optical double-gluing part machining method which comprises the steps that a first semi-finished product thick part and a second semi-finished product thin part are provided, and machining allowance is reserved between the first semi-finished product thick part and the second semi-finished product thin part; a positioning tool is provided, under the detection of the comparator, the first semi-finished product thick part and the second semi-finished product thin part are subjected to abutting positioning and gluing through the positioning tool, and an initial gluing part is formed; providing an adjusting tool, and adjusting the parallelism of a gluing layer between a first semi-finished thick part and a second semi-finished thin part in the initial gluing part through the adjusting tool based on the stripe number detected by the interferometer so as to meet a preset parallelism requirement; the adjusted initial gluing part is cured, and an initial cured part is obtained; and processing the preliminarily cured part to obtain an optical double-gluing part finished product. The problem that it cannot be stably guaranteed that the parallelism of a cementing layer meets the high-standard requirement in the machining process of an existing cemented optical piece is solved.

Description

Technical Field

[0001] The present application relates to the technical field of optical component processing, and more specifically, to a processing method for an optical doublet. Background Art

[0002] An optical doublet is usually composed of two optical components glued together. In the existing processing process of optical doublets, most of them use mechanical pressing or manual gluing to bond products. Usually, in the process of mechanical pressing, the accuracy of the glue layer between two optical components can be controlled to 1 - 3 μm, which can be stably controlled, but the parallelism control of the glue layer is poor, and the parallelism reaches 3 - 5 ″. The method of manual gluing cannot stably control the parallelism of the glue layer of the product. Often, the parallelism can reach 0.5 - 10 ″, and it is difficult to ensure the consistency of mass production.

[0003] In the case of high requirements for the parallelism of the glue layer of an optical doublet, for example, when the parallelism of the glue layer ≤ 1 ″. The existing mechanical pressing process cannot meet the high-standard parallelism requirements, and manual gluing cannot ensure the stability of the parallelism of the glue layer.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0005] The purpose of the present application is to provide a processing method for an optical doublet, which solves the problem that in the existing processing of glued optical components, the parallelism of the glue layer cannot be stably guaranteed to meet high-standard requirements.

[0006] To achieve the above purpose, the technical solution adopted in the present application is as follows: The present application provides a processing method for an optical doublet, including the steps of: Providing a first semi-finished thick part and a second semi-finished thin part, wherein the first semi-finished thick part and the second semi-finished thin part are respectively matched according to two parts split from the finished product, and both the first semi-finished thick part and the second semi-finished thin part have machining allowances; Providing a positioning tooling, under the detection of a comparator, abutting and positioning the first semi-finished thick part and the second semi-finished thin part through the positioning tooling and gluing them to form an initial glued part, wherein the images of the first semi-finished thick part and the second semi-finished thin part of the initial glued part coincide in the comparator; Providing an adjustment tooling, based on the number of fringes detected by an interferometer, adjusting the parallelism of the glue layer between the first semi-finished thick part and the second semi-finished thin part of the initial glued part through the adjustment tooling to meet the predetermined parallel requirement; Curing the adjusted initial glued part to obtain a preliminarily cured part; Based on the size requirements of the finished part, the initially cured part is processed to obtain the finished optical double-laminated part.

[0007] In an optional embodiment, in the step of providing a positioning fixture, under the detection of a comparator, the first semi-finished thick part and the second semi-finished thin part are abutted and positioned by the positioning fixture and glued together to form an initial glued part: Apply anti-sticking agent to the mutually perpendicular positioning sides, positioning abutment surface, and positioning support surface of the positioning fixture; The first semi-finished thick part and the second semi-finished thin part are bonded together with adhesive to form a preliminary bonded part; The bottom surface of the preliminary bonded part abuts against the positioning support surface of the positioning fixture, one side of the preliminary bonded part abuts against the positioning side, and one surface of the preliminary bonded part abuts against the positioning abutment surface, so that the first semi-finished thick part and the second semi-finished thin part in the preliminary bonded part are aligned. The pre-bonded parts after alignment are inspected by a comparator, so that the images of the first semi-finished thick part and the second semi-finished thin part in the comparator are superimposed.

[0008] In an optional embodiment, in the step of applying anti-sticking agent to the mutually perpendicular positioning sides, positioning abutment surface, and positioning support surface of the positioning fixture: The positioning fixture includes: a first fixed plate, the upper surface of which is a positioning support surface; The corner component is set on the positioning support surface of the first fixed plate. The inner side of the corner component forms a positioning side surface and a positioning abutment surface that are perpendicular to each other. Both the positioning side surface and the positioning abutment surface are perpendicular to the positioning support surface.

[0009] In an optional embodiment, in the step of providing an adjustment fixture to adjust the parallelism of the adhesive layer between the first semi-finished thick part and the second semi-finished thin part in the initial glued part based on the number of fringes detected by the interferometer, so as to achieve a predetermined parallelism requirement: The required number of stripes is calculated based on the theoretical parallelism values ​​of the first semi-finished thick part and the second semi-finished thin part without adhesive layer. The actual number of fringes of the initially glued parts is obtained under the detection of the interferometer; Based on the difference between the actual number of stripes and the required number of stripes, the tooling is adjusted to press different positions of the initially glued parts so that the actual number of stripes reaches the required number of stripes.

[0010] In an optional embodiment, the step of pressing different positions of the initially glued part by adjusting the tooling according to the difference between the actual number of stripes and the required number of stripes, so that the actual number of stripes reaches the required number of stripes, is as follows: Determine the differences between the actual number of stripes and the required number of stripes in the length direction, width direction, and diagonal direction, respectively; Based on the difference values ​​in different directions, press down on the corresponding positions of the upper left, lower left, upper center, upper right, lower right, middle left, and middle right of the surface of the initially glued part, so that the actual number of stripes in different directions reaches the required number of stripes in the corresponding directions.

[0011] In an optional embodiment, in the step of pressing down on corresponding positions among the upper left, lower left, upper center, upper right, lower right, left center, and right center positions of the initial glued part according to the difference values ​​in different directions, so that the actual number of stripes in different directions reaches the required number of stripes in the corresponding directions: Select one direction of difference value for adjustment, adjust the tooling towards the first direction, and observe the trend of the difference value. If the trend of change is decreasing, continue to adjust the tooling in the first direction until the difference value is 0; If the trend of change is increasing, adjust the tooling in the opposite direction of the first direction until the difference value is 0.

[0012] In an optional embodiment, in the step of pressing different positions of the initially glued part by adjusting the tooling according to the difference between the actual number of stripes and the required number of stripes, so that the actual number of stripes reaches the required number of stripes: The adjustment fixture includes a front fixing part and a rear fixing part, which are located on both sides of the initially glued part. Multiple adjusting members, each adjustable member being tunably connected to the rear fixing member; The pressing ends of multiple adjusting components are respectively connected to different positions on the surface of the rear fixing component. The initial bonded parts are squeezed by the pressure applied by the corresponding adjusting components at different positions on the surface of the rear fixing component.

[0013] In an optional embodiment, the step of pressing different positions of the initially glued part by adjusting the tooling according to the difference between the actual number of stripes and the required number of stripes to make the actual number of stripes reach the required number of stripes further includes: The positioning fixture with the initial glued parts attached is fixed on the two-dimensional frame, and the adjustment fixture is installed on the positioning fixture with the initial glued parts attached. Based on the position of the interferometer, a two-dimensional frame with a positioning fixture and an adjustment fixture containing the initial bonding parts is fixed on an air-bearing platform, wherein the adjustment fixture and the initial bonding parts are kept at a safe distance from the lens of the interferometer. Curing lamps are installed according to the placement of the initially bonded parts, and the curing lamps can illuminate the polished surface of the initially bonded parts.

[0014] In an optional embodiment, in the step of curing the adjusted initial glued part to obtain a pre-cured part: Irradiate the initially bonded part with the stripes adjusted using a curing lamp for a predetermined time to obtain a pre-cured part, wherein the initially bonded part is kept in close contact with the positioning fixture during the curing process.

[0015] In an optional embodiment, in the step of providing the first semi-finished thick part and the second semi-finished thin part, both the first semi-finished thick part and the second semi-finished thin part are processed from blanks, wherein the processing steps of the first semi-finished thick part or the second semi-finished thin part include: A blank is provided, and the front surface of the blank is machined to be a rough glossy surface. The blank is bonded and fixed by an adhesive and then processed to produce a rough glossy surface by high-polishing. The rough and shiny surface is bonded to the plate, and the bonding surface of the part is processed by sanding, high polishing and low polishing in sequence, and the surface shape of the bonding surface of the part meets the predetermined standard. The processed parts are glued to the microcrystalline disk with a smooth adhesive, and the rough and glossy surfaces are successively ground, high-polished, and low-polished to obtain the outer end face, wherein the surface shape of the outer end face meets the predetermined standard.

[0016] The beneficial effects of the processing method for an optical double-laminated part provided in this application are at least as follows: First, under the detection of a comparator, the first semi-finished thick part and the second semi-finished thin part are bonded together using a positioning fixture to form an initial bonded part, ensuring the edge alignment of the first and second semi-finished parts. Then, the initial bonded part is pressed and adjusted using an adjustment fixture. Based on the number of fringes detected by the interferometer, the parallelism of the adhesive layer between the first and second semi-finished parts is adjusted, controlling the parallelism of the adhesive layer to within 1″. After curing, a pre-cured part is obtained. Finally, the pre-cured part is processed to obtain the finished optical double-laminated part. This ensures that the single-sided and overall aperture values ​​of the finished optical double-laminated part are better than predetermined standards. It also stably ensures that the parallelism of the adhesive layer in the optical double-laminated part meets high standards. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the optical double-laminated component processed in this application; Figure 2 A flowchart illustrating the main steps of a processing method for an optical double-laminated component provided in this application embodiment; Figure 3 A flowchart illustrating the processing steps of a second semi-finished thin part or a first semi-finished thick part in a processing method for an optical double-laminated part provided in this application embodiment; Figure 4 A flowchart detailing the steps of step S200 in a method for processing an optical double-laminated component, as provided in an embodiment of this application; Figure 5 This is a schematic diagram illustrating the principle of preliminary bonding in a processing method for an optical double-laminated component provided in this application embodiment; Figure 6 A schematic diagram illustrating the principle of preliminary positioning using a positioning fixture in a processing method for an optical double-laminated component provided in this application embodiment; Figure 7 A schematic diagram illustrating the principle of preliminary bonding using a positioning fixture in a processing method for an optical double-laminated component provided in this application embodiment; Figure 8 A flowchart detailing the steps of step S300 in a method for processing an optical double-laminated component, as provided in an embodiment of this application; Figure 9 A schematic diagram illustrating the structural principle of the debugging platform in a processing method for an optical double-laminated component provided in this application embodiment; Figure 10 A schematic diagram illustrating the structural principle of the adjustment fixture in use during a processing method for an optical double-laminated component provided in this application embodiment; Figure 11 This is a schematic diagram illustrating the structural principle of the processing of a pre-cured part in a processing method for an optical double-laminated part provided in an embodiment of this application.

[0019] The following are the labeling elements in the figure: 100. Finished optical double-laminated component; 110. Quartz crystal sheet; 120. Adhesive layer; 130. Base component; 200. Initially glued component; 210. Second semi-finished thin component; 220. First semi-finished thick component; 230. Component bonding surface; 240. Front surface; 250. Rear surface; 260. Side wall surface; 270. Bottom surface; 280. Preliminarily cured component; 300. Positioning fixture; 310. First fixing plate; 311. Positioning support surface; 320. Corner component; 321. Positioning side; 322. Positioning abutment surface; 400. Adjustment fixture; 410. Front fixing component; 420. Rear fixing component; 430. Adjustment component; 500. Interferometer; 600. Two-dimensional frame; 700. Air flotation platform; 800. Curing lamp; 900. Comparator. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0022] The following is an explanation of some of the technical terms used in this embodiment: Optical double-laminated parts: Optical components formed by gluing together two aligned parallel single parts; Surface shape: PV (Peak to valley), also known as peak-to-valley value, is a common indicator of the surface shape quality of optical surfaces. It refers to the height difference between the highest and lowest points within the sampling range (based on 2D contour lines or 3D data maps), after removing the reference surface.

[0023] Gluing: A method of joining two polished parts together using adhesive; Parallelism: Defines the degree to which all points on a surface, axis, or line are equidistant from a datum (reference feature). It constrains the orientation of a feature relative to a datum, ensuring that it remains theoretically parallel.

[0024] Interferometer: Used to inspect the surface shape and parallelism of polished optical parts.

[0025] Two-dimensional frame: used to adjust the image of optical components during the component inspection process.

[0026] This embodiment proposes a processing method for optical double-laminated parts, as detailed below: Please see Figure 1 , Figure 2This embodiment proposes a processing method for an optical double-laminated component, used to process an optical double-laminated component finished product 100. The optical double-laminated component finished product 100 is formed by bonding two optical parts (quartz crystal sheet 110 and substrate part 130) together, with an adhesive layer 120 between the two optical parts. The specific quality requirements of the processed optical double-laminated component finished product 100 are as follows: (1) The overall thickness of the double-laminated component finished product is 6±0.02mm, the length is 35±0.1mm, and the width is 25±0.1mm; among the two optical parts, one key part is the quartz crystal sheet 110, whose thickness requirement is 0.02±0.02mm, and the other part is the substrate part 130 (K9). The thickness of the substrate part 130 and the adhesive layer 120 should be controlled to meet the finished product thickness of 6±0.02mm. (2) The parallel control of the 120 adhesive layer is ≤1″. (3) The overall surface shape and single-sided surface shape control meet the predetermined standards: aperture (N) 0.28fr & error (△N) 0.28fr@633nm, and the light transmission aperture is 2mm inward from the edge.

[0027] Please see Figure 1 To meet the processing requirements of the aforementioned optical components, the processing method of an optical double-laminated component in this embodiment mainly includes the following steps: Step S100: Provide a first semi-finished thick part and a second semi-finished thin part, wherein the first semi-finished thick part and the second semi-finished thin part are matched according to the two parts into which the finished product is split, and both the first semi-finished thick part and the second semi-finished thin part have processing allowance.

[0028] Please see Figure 5 In the specific process, according to the requirements of the finished optical double-laminated part 100, the finished product can be split into two parts, namely two different individual parts. After being scaled up according to the two different individual parts, the required first semi-finished thick part 220 and second semi-finished thin part 210 are obtained. The thickness of the first semi-finished thick part 220 is greater than that of the first semi-finished thin part.

[0029] The first semi-finished product is 220mm thick (corresponding to...) Figure 1 The requirements for the base part 130 shown are: the thickness is machined to 6 + 0.02~0.03mm (leaving room for subsequent polishing), the single-sided machining of the first semi-finished thick part 220 is better than the aperture (N) 0.1fr & error (△N) 0.1fr@633nm, the overall surface shape is better than (N) 0.18fr & error (△N) 0.18fr@633nm, and the parallelism can be controlled within 0~5″.

[0030] First semi-finished thin part (corresponding to, for example) Figure 1The requirements for the quartz crystal sheet 110 shown are as follows: the thickness can be 3mm ± 0.2mm, the dimensional consistency of one side (part bonding surface 230) of the first semi-finished thick part 220 is required to be within 1μm, and the parallelism of the product is controlled to be <1″; the processing of one side of the first semi-finished thick part 220 is better than aperture (N) 0.1fr & error (△N) 0.1fr@633nm, and the overall surface shape is better than (N) 0.18fr & error (△N) 0.18fr@633nm.

[0031] The aforementioned first semi-finished thick and thin parts can be purchased as finished products or manufactured through processing. The processing methods and procedures for both parts are consistent. Please refer to [link / reference]. Figure 3 For example, both the first semi-finished thick part and the second semi-finished thin part are processed from blanks. Taking the processing flow of the first semi-finished thick part as an example, step S100 specifically includes steps S110-S120, as follows: Step S110: Provide a blank part, and process the front surface of the blank part to be a rough glossy surface, wherein the blank part is bonded and fixed by adhesive and processed to produce a rough glossy surface by high polishing.

[0032] In the specific process, the front surface of the blank is processed into a rough glossy surface, and rosin wax is used as the adhesive. After being bonded and fixed by rosin wax, it is then high-polished to reduce the impact on the surface shape of the product caused by direct sanding and polishing.

[0033] Step S120: The rough and shiny surface is bonded to the plate, and the bonding surface of the part is processed by sanding, high polishing and low polishing in sequence, wherein the surface shape of the bonding surface of the part meets the predetermined standard.

[0034] In the specific process, the bonding surface 230 of one side of the part is processed. Rosin glue dots are bonded to the matte surface and mounted on a plate. Through sanding, high and low polishing, the surface shape of the product is controlled to be a concave ring with an aperture better than (N) 0.1fr & error (△N) 0.1fr @633nm. Finally, the part is removed from the plate, chamfered, cleaned, and inspected.

[0035] Step S130: Fix the processed part's adhesive surface onto the microcrystalline disk, and sequentially perform sanding, high-polishing, and low-polishing on the rough and glossy surfaces to obtain the outer end face, wherein the surface shape of the outer end face meets the predetermined standard.

[0036] In the specific process, after positioning the bonding surface of the part, a rough and glossy surface is processed. A microcrystalline disk with a parallelism of <1″ is used for the gloss adhesive. The gloss adhesive is applied to the disk, then sanded, and high and low polished to obtain the outer end face. The outer end face is the side opposite to the bonding surface 230 of the part (please refer to...). Figure 5In the first semi-finished thick part, the outer end face is the front surface 240, and in the first semi-finished thin part, the outer end face is the rear surface 250. The overall surface shape of the product is controlled to be better than (N) 0.18fr & error (△N) 0.18fr@633nm, the disk parallelism is <1″, and the process includes unloading, chamfering, cleaning, and inspection.

[0037] Step S200: Provide a positioning fixture. Under the detection of the comparator, the first semi-finished thick part and the second semi-finished thin part are positioned against each other and glued together by the positioning fixture to form an initial glued part, wherein the images of the first semi-finished thick part and the second semi-finished thin part of the initial glued part coincide in the comparator.

[0038] Please see Figure 5 , Figure 6 In the specific process, a dedicated positioning fixture 300 is designed to initially bond the first semi-finished thick part 220 and the second semi-finished thin part 210 together, mainly connecting the two individual parts together but not curing them. The positioning fixture 300 specifically includes: a first fixing plate 310 and a corner piece 320. The upper surface of the first fixing plate 310 is a positioning support surface 311. The corner piece 320 can be L-shaped and is set on the positioning support surface 311 of the first fixing plate 310. The inner side of the corner piece 320 forms a perpendicular positioning side surface 321 and a positioning abutment surface 322 (two adjacent surfaces on the inner side of the L-shape). Both the positioning side surface 321 and the positioning abutment surface 322 are perpendicular to the positioning support surface 311. In use, the positioning support surface 311, the positioning side surface 321, and the positioning abutment surface 322 serve as abutment positioning references in the up-down, left-right, and front-back directions, respectively, so that the bonding surfaces 230 of the first semi-finished thick part 220 and the second semi-finished thin part 210 are initially positioned and bonded.

[0039] Please see Figure 4 Step S200 specifically includes steps S210-S240. Details are as follows: Step S210: Apply anti-sticking agent to the mutually perpendicular positioning sides, positioning abutment surface, and positioning support surface of the positioning fixture.

[0040] Please see Figure 5 , Figure 6 The anti-stick agent can be petroleum jelly. Apply a layer of petroleum jelly with a thickness of about 0.02-0.05mm to the positioning side 321, positioning abutment surface 322 and positioning support surface 311. The function of petroleum jelly is to provide the parts with a fine-tuning elastic medium and a blocking medium to prevent the adhesive (UV adhesive) from overflowing and curing and sticking the parts to the tooling, so that they are not difficult to remove.

[0041] Step S220: The first semi-finished thick part and the second semi-finished thin part are bonded together with adhesive to form a preliminary bonded part.

[0042] Please see Figure 5 , Figure 6 The adhesive can be UV adhesive, which facilitates subsequent curing by UV irradiation. Apply the UV adhesive to the bonding surface 230 of the first semi-finished thick part 220 (substrate), then place the bonding surface 230 of the second semi-finished thin part 210 (quartz crystal) onto the first semi-finished thick part 220 coated with adhesive. Squeeze the adhesive by hand until it fills the bonding layer 120 between the parts, thus forming a preliminary bond.

[0043] Step S230: The bottom surface of the preliminary bonded part abuts against the positioning support surface of the positioning fixture, the side surface of one side of the preliminary bonded part abuts against the positioning side, and the surface of one side of the preliminary bonded part abuts against the positioning abutment surface, so that the first semi-finished thick part and the second semi-finished thin part in the preliminary bonded part are aligned.

[0044] Please see Figure 5 , Figure 6 In the specific process, the preliminary bonded part, which is formed by bonding the first semi-finished thick part 220 (base) and the second semi-finished thin part 210 (quartz crystal), is placed on the positioning fixture 300 composed of the corner part 320 and the first fixing plate 310. The bottom surface 270 of the preliminary bonded part is close to the positioning support surface 311 of the positioning fixture 300; the side wall surface 260 (left side or right side) of the preliminary bonded part is close to the positioning side surface 321 of the corner part 320; and the front surface 240 of the preliminary bonded part is close to the positioning abutment surface 322 of the corner part 320. Then the preliminary bonded part is placed in front of the comparator 900.

[0045] Step S240: Detect the pre-bonded parts after alignment using a comparator, so that the images of the first semi-finished thick part and the second semi-finished thin part in the comparator are superimposed.

[0046] like Figure 7 As shown, in the specific process, the comparator 900 is turned on to observe the image of the preliminary bonded part, and by adjustment, the image of the first semi-finished thick part 220 and the image of the second semi-finished thin part 210 in the comparator are made to overlap, and the preliminary bonded part is completed.

[0047] Step S300: Provide an adjustment fixture. Based on the number of fringes detected by the interferometer, adjust the parallelism of the adhesive layer between the first semi-finished thick part and the second semi-finished thin part in the initial adhesive part to achieve the predetermined parallelism requirement.

[0048] Please see Figure 9 , Figure 10In the specific process, a specially designed adjustment fixture 400 is used to adjust the parallelism of the adhesive layer 120 between the first semi-finished thick part 220 and the second semi-finished thin part 210. The adjustment fixture 400 specifically includes: a front fixing member 410 and a rear fixing member 420, as well as multiple adjusting members 430. The front fixing member 410 and the rear fixing member 420 are respectively located on both sides of the initial adhesive part 200; multiple adjusting members 430, each adjusting member 430 is adjustablely connected to the rear fixing member 420; the pressing ends of the multiple adjusting members 430 are respectively connected to different positions on the surface of the rear fixing member 420, and the different positions on the surface of the rear fixing member 420 are pressed by the corresponding adjusting members 430 to squeeze the initial adhesive part 200.

[0049] In the specific structure, both the front fixing member 410 and the rear fixing member 420 are glass components. The front fixing member 410 is fixed to the rear outer wall of the corner component 320, and the rear fixing member 420 is movably disposed on the rear side of the initial bonding part 200, allowing the rear fixing member 420 to press tightly against the initial bonding part 200 (the side where the second semi-finished thin part 210 is located). In addition, to protect the surface of the initial bonding part 200, polyurethane is bonded to the side of the rear fixing member 420 facing the initial bonding part 200. After the front fixing member 410 and the rear fixing member 420 are set, multiple adjusting members 430 are respectively set on the front fixing member 410 and the rear fixing member 420, and distributed in seven positions: upper left, lower left, upper center, upper right, lower right, middle left, and middle right, corresponding to the front end face of the initial bonding part 200. The seven adjustable parts 430 can be moved back and forth by twisting, and a certain amount of pressure or slight movement can be applied to the rear fixing part 420. This allows for individual pressing and adjustment of the seven positions of the initial bonded part 200. By pressing high or low points at different positions, the number of interference fringes of the initial bonded part 200 can be controlled, thereby controlling the parallelism of the two individual parts of the initial bonded part 200. In this embodiment, the adjustable part 430 can be a micrometer adjustable part 430, which can achieve fine-tuning adjustment and improve adjustment accuracy.

[0050] Please see Figure 8 For example, step S300 specifically includes steps S310-S340.

[0051] S310, set up a debugging platform.

[0052] Please see Figure 9 The tools required in the specific process include: an interferometer 500, a two-dimensional frame 600, an adjustment fixture 400, a positioning fixture 300, and an air-floating platform 700.

[0053] Please see Figure 9 , Figure 10The positioning fixture 300, to which the initial bonded part 200 is connected, is fixed onto the two-dimensional frame 600, and the adjustment fixture 400 is installed onto the positioning fixture 300 to which the initial bonded part 200 is connected. The adjustment fixture 400 can be fixed by adhesive bonding or mechanical clamping.

[0054] Please see Figure 9 , Figure 10 Install the front fixing part 410 and the rear fixing part 420 of the adjustment fixture 400 on the front and rear sides of the initial glued part 200 and the corner fixture, respectively, and set them up. Then install the seven-position adjustment parts 430 (micrometer adjustment parts 430), which are respectively set on the upper left, lower left, upper center, upper right, lower right, left center, and right center of the initial glued part 200.

[0055] Based on the position of the interferometer 500, a two-dimensional frame 600, including a positioning fixture 300 with an initial bonding component 200 and an adjustment fixture 400, is fixed onto the air-bearing platform 700. The adjustment fixture 400 and the initial bonding component 200 are kept at a safe distance from the lens of the interferometer 500. The adjustment component 430 and the initial bonding component 200 are kept at a safe distance of 10cm from the lens of the interferometer 500 to prevent accidental collisions. Fixing the two-dimensional frame 600 is equivalent to fixing the initial bonding component 200. The number of interference fringes on the initial bonding component 200 is detected using the interferometer 500.

[0056] Please see Figure 9 According to the placement of the initial bonded part 200, a curing lamp 800 is installed, which can irradiate the polished surface of the initial bonded part 200. The curing lamp 800 can be a UV lamp (used in conjunction with UV adhesive), and the UV lamp can be installed according to the placement of the initial bonded part 200 to ensure that the UV lamp can irradiate the polished surface of the initial bonded part 200, that is, the rear surface 250 of the initial bonded part 200 (the side where the second semi-finished thin part 210 is located).

[0057] Step S320: Calculate the required number of stripes based on the theoretical parallelism values ​​of the first semi-finished thick part and the second semi-finished thin part without an adhesive layer.

[0058] The adjustment method involves pressing the high point or the low point to control the number of interference fringes of the initially glued parts, thereby controlling the parallelism of the initially glued parts. Therefore, before adjusting the parallelism of the adhesive layer, it is necessary to test the parallelism of the first semi-finished thick part (substrate) and the second semi-finished thin part (quartz crystal). For example, the theoretical parallelism of the initial adhesive part composed of the two parts without an adhesive layer is X″, where X is a parallelism value (i.e., the theoretical parallelism value). To make the parallelism of the subsequent adhesive layer close to 0, the parallelism of the front and rear surfaces of the initial adhesive part after bonding needs to be controlled at X″, or infinitely close to X″. This way, the parallelism of the adhesive layer can be controlled to be infinitely close to 0″. Since the X″ value may be different for each initial adhesive part, it is necessary to control the front and rear surfaces of the initial adhesive part to have different parallelism values. Since different parallelism values ​​will produce different numbers of interference fringes and different orientations of interference fringes, the pressing point and the number of fringes to be controlled are different for each bonding. The required number of fringes needs to be calculated based on the theoretical parallelism values ​​of the first semi-finished thick part and the second semi-finished thin part without an adhesive layer.

[0059] Step S330: Under the detection of the interferometer, obtain the actual number of fringes of the initial glued part.

[0060] Step S340: Based on the difference between the actual number of stripes and the required number of stripes, press different positions of the initially glued parts by adjusting the tooling to make the actual number of stripes reach the required number of stripes.

[0061] In the specific process, the differences between the actual number of stripes and the required number of stripes are determined in the length direction, width direction, and diagonal direction, respectively. Based on the differences in each direction, pressure is applied to the corresponding positions on the surface of the initially bonded part, including the upper left, lower left, upper center, upper right, lower right, left center, and right center positions, to ensure that the actual number of stripes in each direction reaches the required number of stripes in the corresponding direction.

[0062] Taking one direction (length orientation) as an example, the specific adjustment process is as follows: Select the difference value in one direction for adjustment, and adjust the tooling towards the first direction (e.g., the positive direction), observing the trend of the difference value. If the trend is decreasing, continue adjusting the tooling in the first direction (positive direction) until the difference value is 0. If the trend is increasing, adjust the tooling in the opposite direction (reverse direction) until the difference value is 0.

[0063] The specific process described above is as follows: First, according to the description of step S320 above, after calculating the fringes based on parallelism, the number of fringes is adjusted by adjusting the adjusting components at different positions. The number of fringes in the left-right direction displayed on the interferometer is usually opposite to the pressure applied to the left and right sides of the part, and the number of fringes in the up-down direction displayed on the interferometer usually corresponds to the pressure applied to the up and down sides of the part. The required number of fringes varies depending on the length and width of the initially glued part. For example, if the required number of fringes is 4 in the length direction and 3 in the width direction, the number of fringes in the diagonal direction of the initially glued part can be adjusted in the following ways: When the initial striations on the glued part are arranged perpendicularly to the length side and number two, turn the upper right, middle right, and lower right micrometers on the right side and observe whether the number of striations increases or decreases. If it increases, continue this operation until you adjust to four striations; otherwise, adjust back. Note that if the adjustment direction is reversed, be sure to loosen the adjusting piece at that position to allow the initial glued part to move. Similarly, if the initial glued part is arranged perpendicularly to the width direction, you can follow this operation. When the striations on the part are arranged diagonally along the initial glued part, turn the upper right micrometer and observe whether the number of striations on the part increases or decreases, following the same principle. Continue adjusting until the difference between the actual number of striations and the required number of striations is 0 (i.e., the actual number of striations equals the required number of striations), then the adjustment is complete.

[0064] Step S400: Curing the adjusted initial glued parts to obtain pre-cured parts.

[0065] In the specific process, after adjusting the stripes, the part is irradiated with a UV lamp for 2 minutes to obtain preliminary curing. Only then are the first semi-finished thick part (base part) and the second semi-finished thin part (quartz crystal) fully glued and fixed. It is important to note that during the curing process, the initially glued part must be kept in close contact with the positioning sides and positioning abutment surfaces of the corner part at all times. After complete curing, the partially cured part is removed.

[0066] Step S500: Inspect the pre-cured parts.

[0067] Based on the finished product requirements, the parallelism of the pre-cured parts is checked to infer the parallelism, aperture, error, and product dimensions of the adhesive layer. Any substandard pre-cured parts are disassembled by soaking in acetone and then re-bonded. This step focuses on the thickness of the pre-cured parts to calculate the adhesive layer thickness, and then calculates the subsequent removal dimensions (thickness).

[0068] Step S600: According to the size requirements of the finished part, process the initially cured part to obtain the finished optical double-laminated part.

[0069] Please see Figure 11In the specific process, the surface of the second semi-finished thin part 210 (quartz crystal) of the initially cured part 280 is coated with a light adhesive on a light adhesive tray. The surface of the first semi-finished thick part 220 (substrate) is processed according to the finished product size, and the parallelism and surface shape are adjusted to the required values.

[0070] Then, the pre-cured part 280, after one side has been processed, is placed on a plate, its dimensions are checked, and the machining allowance for the second semi-finished thin part 210 (quartz crystal) is calculated. Based on the calculated machining allowance, a light adhesive is applied to the surface of the first semi-finished thick part 220 (base part 130) on a light adhesive tray, and the second semi-finished thin part 210 (quartz crystal) is then sanded and polished to achieve the required dimensions. Finally, individual part repair is performed.

[0071] In summary, the optical double-laminated component processing method of this application requires only that the operator be able to use an interferometer and comparator to complete the product bonding, with low skill requirements and therefore high operability. Furthermore, the parallelism of the bonding layer between the first semi-finished thick part and the second semi-finished thin part in the initial bonding process is adjusted to control the parallelism of the bonding layer to within 1″. The resulting optical double-laminated component has single-sided and overall aperture values ​​that are better than predetermined standards. This method consistently ensures that the parallelism of the bonding layer in the optical double-laminated component meets high standards.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for processing an optical double-laminated component, characterized in that, Including the following steps: A first semi-finished thick part and a second semi-finished thin part are provided, wherein the first semi-finished thick part and the second semi-finished thin part are matched according to the two parts split into the finished product, and both the first semi-finished thick part and the second semi-finished thin part have processing allowance. A positioning fixture is provided. Under the detection of a comparator, the first semi-finished thick part and the second semi-finished thin part are positioned and glued together by the positioning fixture to form an initial glued part. The images of the first semi-finished thick part and the second semi-finished thin part in the comparator of the initial glued part coincide. An adjustment fixture is provided to adjust the parallelism of the adhesive layer between the first semi-finished thick part and the second semi-finished thin part in the initial glued part, based on the number of fringes detected by the interferometer, so as to achieve a predetermined parallelism requirement. The adjusted initial glued parts are cured to obtain pre-cured parts; According to the size requirements of the finished part, the pre-cured part is processed to obtain the finished optical double-laminated part.

2. The processing method of the optical double-laminated component as described in claim 1, characterized in that, In the step of providing a positioning fixture, under the detection of a comparator, the first semi-finished thick part and the second semi-finished thin part are abutted and positioned by the positioning fixture and then glued together to form an initial glued part: Anti-sticking agent is applied to the mutually perpendicular positioning sides, positioning abutment surface, and positioning support surface of the positioning fixture; The first semi-finished thick part and the second semi-finished thin part are bonded together with adhesive to form a preliminary bonded part; The bottom surface of the preliminary adhesive part abuts against the positioning support surface of the positioning fixture, one side of the preliminary adhesive part abuts against the positioning side, and one surface of the preliminary adhesive part abuts against the positioning abutment surface, so that the first semi-finished thick part and the second semi-finished thin part in the preliminary adhesive part are aligned. The pre-bonded parts after alignment are detected by a comparator, so that the images of the first semi-finished thick part and the second semi-finished thin part in the comparator are superimposed.

3. The processing method for the optical double-laminated component as described in claim 2, characterized in that, In the step of applying anti-sticking agent to the mutually perpendicular positioning sides, positioning abutment surface, and positioning support surface of the positioning fixture: The positioning fixture includes: a first fixed plate, the upper surface of which is a positioning support surface; A corner component is disposed on the positioning support surface of the first fixed plate. The inner side of the corner component forms a positioning side surface and a positioning abutment surface that are perpendicular to each other. Both the positioning side surface and the positioning abutment surface are perpendicular to the positioning support surface.

4. The processing method of the optical double-laminated component as described in claim 1, characterized in that, In the step of providing an adjustment fixture, based on the number of fringes detected by an interferometer, adjusting the parallelism of the adhesive layer between the first semi-finished thick part and the second semi-finished thin part in the initial glued part to achieve a predetermined parallelism requirement: The required number of stripes is calculated based on the theoretical parallelism values ​​of the first semi-finished thick part and the second semi-finished thin part without adhesive layer. The actual number of fringes of the initially glued part is obtained under the detection of the interferometer; Based on the difference between the actual number of stripes and the required number of stripes, the adjusting tool is used to press different positions of the initially glued part so that the actual number of stripes reaches the required number of stripes.

5. The processing method of the optical double-laminated component as described in claim 4, characterized in that, In the step of pressing different positions of the initially glued part using the adjusting fixture based on the difference between the actual number of stripes and the required number of stripes, so that the actual number of stripes reaches the required number of stripes: Determine the differences between the actual number of stripes and the required number of stripes in the length direction, width direction, and diagonal direction, respectively; Based on the difference values ​​in different directions, press down on the corresponding positions of the upper left, lower left, upper center, upper right, lower right, left center, and right center of the surface of the initially bonded part, so that the actual number of stripes in different directions reaches the required number of stripes in the corresponding directions.

6. The processing method of the optical double-laminated component as described in claim 5, characterized in that, In the step of pressing down on corresponding positions among the upper left, lower left, upper center, upper right, lower right, left center, and right center positions of the initial glued part according to the difference values ​​in different directions, so as to make the actual number of stripes in different directions reach the required number of stripes in the corresponding directions: Select one direction of the difference value for adjustment, adjust the adjustment tooling towards the first direction, and observe the trend of the difference value. If the trend of change is decreasing, continue to adjust the tooling in the first direction until the difference value is 0; If the trend of change is increasing, adjust the adjustment fixture in the opposite direction of the first direction until the difference value is 0.

7. The processing method of the optical double-laminated component as described in claim 4, characterized in that, In the step of pressing different positions of the initially glued part using the adjusting fixture based on the difference between the actual number of stripes and the required number of stripes, so that the actual number of stripes reaches the required number of stripes: The adjustment fixture includes a front fixing member and a rear fixing member, which are located on both sides of the initially glued part, respectively. Multiple adjusting members, each of which is adjustablely connected to the rear fixing member; The pressing ends of the plurality of adjusting members are respectively connected to different positions on the surface of the rear fixing member, and the initial bonded parts are squeezed by the pressure applied by the corresponding adjusting members at different positions on the surface of the rear fixing member.

8. The processing method of the optical double-laminated component as described in claim 7, characterized in that, Before the step of pressing different positions of the initially bonded part using the adjusting fixture based on the difference between the actual number of stripes and the required number of stripes, so that the actual number of stripes reaches the required number of stripes, the following method is also included: The positioning fixture with the initial glued part attached is fixed on the two-dimensional frame, and the adjustment fixture is installed on the positioning fixture with the initial glued part attached. According to the position of the interferometer, the two-dimensional frame with the positioning fixture and the adjustment fixture carrying the initial bonding part is fixed on the air-floating platform, wherein the adjustment fixture and the initial bonding part are respectively kept at a safe distance from the lens of the interferometer; A curing lamp is installed according to the placement of the initially bonded parts, wherein the curing lamp can illuminate the polished surface of the initially bonded parts.

9. The processing method of the optical double-laminated component as described in claim 8, characterized in that, In the step of curing the adjusted initial glued parts to obtain the pre-cured parts: The initial bonded part is irradiated with a curing lamp for a predetermined time after the stripes have been adjusted to obtain a pre-cured part, wherein the initial bonded part is kept in close contact with the positioning fixture during the irradiation of the curing lamp.

10. The processing method of the optical double-laminated component as described in claim 1, characterized in that, In the step of providing a first semi-finished thick part and a second semi-finished thin part, both the first semi-finished thick part and the second semi-finished thin part are processed from blanks, wherein the processing steps of the first semi-finished thick part or the second semi-finished thin part include: A blank is provided, and the front surface of the blank is machined to be a rough glossy surface, wherein the blank is bonded and fixed by an adhesive and the rough glossy surface is processed by high-polish polishing. The rough and shiny surface is bonded to the plate, and the bonding surface of the part is processed by sanding, high polishing and low polishing in sequence, wherein the surface shape of the bonding surface of the part meets the predetermined standard. The processed parts are glued to a microcrystalline disk with a glossy adhesive. The rough and glossy surfaces are then successively sanded, high-polished, and low-polished to obtain the outer end face of the first semi-finished thick part or the second semi-finished thin part, wherein the surface shape of the outer end face meets a predetermined standard.

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