Method for adjusting lens frame assembly of cemented lens and cemented assembly type lens

Abstract

The invention provides an assembling and adjusting method for a lens frame assembly of a cemented lens and a cemented assembly type lens, and the method comprises the steps: carrying out the turning of a to-be-processed lens frame assembly, obtaining the lens frame assembly, enabling the boundary dimension of the lens frame assembly to reach an assembly standard, and enabling the to-be-processed lens frame assembly to be formed through the assembly and combination of a lens cemented part and a lens frame; splitting the lens frame assembly into a lens gluing piece and a formed lens frame, and connecting the formed lens frame with a lens cone to obtain a mechanical shell assembly; an optical flat adjusting tool is provided, and the optical flat adjusting tool is adopted on the center deviation detection equipment to adjust the deviation of the optical axis of the lens gluing piece and the center axis of the mechanical shell assembly so as to achieve the preset quality standard; and the adjusted lens gluing piece is fixed with the mechanical shell assembly. The problem that the preset quality standard requirement cannot be met in the machining process of an existing mirror frame assembly is solved.

Description

Technical Field

[0001] The present application relates to the technical field of optical parts processing, and more specifically, to a method for assembling and adjusting a frame assembly of a glued lens and a glued assembly type lens. Background Art

[0002] The lens is a commonly used part in the optical system. Usually, multiple frame assemblies are installed in the lens barrel to achieve corresponding optical functions, such as imaging, detection, etc. The frame assembly is usually composed of a mechanical frame (usually made of aluminum) and an optical lens (glass material, or a lens group formed by multiple optical lenses). The edge of the frame can be processed by centering turning to ensure that the offset and tilt of the mechanical center axis of the mechanical frame in the frame assembly and the optical axis of the optical lens are within a certain standard. The inner wall of the lens barrel is usually formed by precision machining, so that the frame assembly can form a lens with high precision after being installed in the lens barrel. The existing lens assembly method usually uses centering turning to process the frame of the frame assembly, and the tilt and offset between the mechanical center axis of the frame and the optical axis of the optical lens are ensured by centering turning. Before the centering turning is performed, the tilt and offset between the optical axis of the optical lens and the mechanical center axis of the frame (that is, the central axis of the frame) need to be detected, and then the corresponding turning adjustment is performed according to the deviation between the two, so as to ensure that the tilt and offset of the two are within the range required by the optical design index as much as possible.

[0003] As for some special lens structures, such as plano-convex lens glued parts formed by gluing a plano-convex lens and a plane window, plano-concave lens glued parts formed by gluing a concave lens and a plane window, or even other glued lenses provide a plane and then glue it to the plane window to form a glued lens structure. Taking the plano-convex lens glued parts as an example, since the plano-convex lens glued parts are glued components formed by gluing a plano-convex lens and a plane window together, the convex spherical lens is a small-sized nearly hemispherical lens, and the plane window is a disk lens with parallel upper and lower surfaces; after the two are glued and fixed, since the glued surface is a plane, the lower surface of the plane window is also a plane. During the optical axis detection process, the detection of the glued surface is always affected by the plane window, and the frame component to be processed cannot be accurately detected.

[0004] Since it is difficult to detect the inclination and offset between the optical axis of the optical lens and the mechanical center axis of the frame (that is, the center axis of the frame), the deviation detection between the optical axis and the mechanical center axis is inaccurate, which leads to inaccurate turning reference of the centering lathe, resulting in large deviation between the optical axis of the optical lens and the mechanical center axis of the frame in the processed lens barrel structure, which cannot meet the predetermined quality standards. For example, for a plano-convex lens, the distance accuracy between the top of the optical lens and the end face of the lens barrel shell cannot be within 10um, and the inclination accuracy of the optical axis of the optical lens relative to the mechanical center axis (total optical axis) of the lens barrel cannot be within 30 seconds.

[0005] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0006] The purpose of the present application is to provide a method for assembling and adjusting a frame assembly of a cemented lens, which solves the problem that the existing frame assembly cannot meet the predetermined quality standard requirements during the processing.

[0007] To achieve the above purpose, the technical solution adopted in this application is:

[0008] On the one hand, the present application provides a method for assembling and adjusting a frame assembly of a cemented lens, comprising the steps of:

[0009] The frame assembly to be processed is obtained by turning the frame assembly to make the outer dimensions of the frame assembly meet the assembly standard, wherein the frame assembly to be processed is formed by assembling and combining the lens glued parts and the frame;

[0010] The frame assembly is split into a lens glued part and a molded frame, and the molded frame is connected to a lens barrel to obtain a mechanical housing assembly;

[0011] Provide a flat crystal adjustment tool, and use the flat crystal adjustment tool to adjust the offset between the optical axis of the lens bonding part and the central axis of the mechanical housing assembly on the center deviation detection device to achieve a predetermined quality standard;

[0012] The adjusted lens bonding part is fixed to the mechanical housing assembly.

[0013] In an optional embodiment, in the step of providing a flat crystal adjustment tool and using the flat crystal adjustment tool on a center deviation detection device to adjust the offset between the optical axis of the lens cemented part and the central axis of the mechanical housing assembly to achieve a predetermined quality standard:

[0014] The flat crystal assembly tooling includes a flat glass plate, the lower surface of which is used to be arranged on the detection platform of the center deviation detection device, and the upper surface of which is used to carry the lens bonding parts and the mechanical housing assembly;

[0015] The parallelism between the lower surface of the flat glass plate and the upper surface of the flat glass plate reaches a predetermined parallelism quality value.

[0016] In an optional embodiment, the flatness of the upper surface of the flat glass plate reaches a predetermined flatness quality value so that the spacing dimension between the top of the lens cementing part and the end surface of the mechanical housing assembly meets the predetermined dimension requirement.

[0017] In an optional embodiment, in the step of providing a flat crystal adjustment tool and using the flat crystal adjustment tool on a center deviation detection device to adjust the offset between the optical axis of the lens cemented part and the central axis of the mechanical housing assembly to achieve a predetermined quality standard:

[0018] The lens glued parts and the mechanical housing assembly are placed on a flat crystal assembly tool, wherein the molded frame is located in the assembly hole of the mechanical housing assembly, and long-time curing glue is provided in the assembly hole;

[0019] Adjust the coincidence between the optical axis of the lens bonded parts and the detection optical axis through the flat crystal adjustment tooling to ensure that the offset between the optical axis of the lens bonded parts and the detection optical axis meets the standard requirements;

[0020] Move the mechanical housing assembly, adjust the overlap between the center axis and the detection optical axis, and ensure that the offset between the center axis and the detection optical axis meets the standard requirements.

[0021] In an optional embodiment, the step of placing the lens bonding member and the mechanical housing assembly on a flat wafer assembly tool, wherein the molded frame is located in the assembly hole of the mechanical housing assembly, and long-time curing glue is provided in the assembly hole comprises:

[0022] Place the lens bonding parts on the flat crystal assembly tool;

[0023] Snap the mechanical housing assembly with glue onto the lens glued part.

[0024] In an optional embodiment, the step of placing the lens bonding member and the mechanical housing assembly on a flat wafer assembly tool, wherein the molded frame is located in the assembly hole of the mechanical housing assembly, and long-time curing glue is provided in the assembly hole comprises:

[0025] placing the lens cemented part at the assembly hole of the mechanical housing assembly with glue;

[0026] The lens bonding parts and mechanical housing components installed together are buckled upside down on the flat crystal assembly tooling.

[0027] In an optional embodiment, in the step of adjusting the overlap between the optical axis of the lens bonded component and the detection optical axis by using a flat crystal adjustment tool to ensure that the offset between the optical axis of the lens bonded component and the detection optical axis meets the standard requirement:

[0028] Rotate the flat crystal adjustment fixture and move the flat crystal adjustment fixture to ensure that the offset between the optical axis of the lens bonding part and the detection optical axis meets the standard requirements.

[0029] In an optional embodiment, in the step of moving the mechanical housing assembly, adjusting the overlap between the central axis and the detection optical axis, and ensuring that the offset between the central axis and the detection optical axis meets the standard requirements:

[0030] A micrometer is provided to measure the change in size of the same point on the outer circle of the mechanical housing component at different rotation positions during the rotation process;

[0031] According to the changed size, the position of the mechanical housing assembly on the flat crystal assembly fixture is moved to ensure that the offset between the center axis and the detection optical axis meets the standard requirements.

[0032] In an optional embodiment, in the step of fixing the adjusted lens cemented component to the mechanical housing assembly:

[0033] The adjusted lens bonding parts and the mechanical housing assembly are left to stand for a predetermined time to allow the long-time curing glue to cure.

[0034] On the other hand, the present application proposes a glued component lens, which includes: a lens glued component, a molded frame and a lens barrel; the lens glued component, the molded frame and the lens barrel are assembled by the above-mentioned assembly method of the frame component of the glued lens.

[0035] The beneficial effects of the assembly and adjustment method of the frame assembly of the glued lens and the glued assembly lens provided by the present application are at least that: by turning the frame assembly to be processed, the outer dimensions of the frame assembly meet the assembly standard, so that the central axis of the mechanical housing assembly composed of the split molded frame and the lens barrel is relatively uniform. Then, the offset between the optical axis of the split lens glued part and the central axis of the mechanical housing assembly is adjusted by the flat crystal assembly tool. Not only the spacing size between the top of the lens glued part and the end face of the mechanical housing assembly meets the predetermined size requirements and the distance accuracy is within 10um by the flat crystal assembly tool; but also the tilt offset accuracy of the optical axis of the lens glued part and the central axis of the mechanical housing assembly is within 30 seconds by adjustment. Not only can various glued frame assemblies be adjusted, but also the application range is wide, especially for the adjustment of special frame assemblies such as plano-convex glued assemblies, it can also be applied to meet the predetermined quality standard requirements of the frame assembly. In the assembly and adjustment process, it is not necessary to perform detection before turning, and the detection step is directly skipped, so that the assembly and adjustment process is more optimized. In addition, the assembly and adjustment method of the lens frame assembly of the cemented lens has low processing cost, ensures assembly and adjustment accuracy, and meets the optical accuracy index of the optical design system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1A flowchart of the main steps of a method for assembling and adjusting a frame assembly of a cemented lens provided in an embodiment of the present application;

[0038] Figure 2 A flowchart of detailed steps of a method for assembling and adjusting a lens frame assembly of a cemented lens provided in an embodiment of the present application;

[0039] Figure 3 A cross-sectional view of a frame assembly adjusted by a method for adjusting a frame assembly of a cemented lens provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the principle of a state of adjustment of a method for assembling and adjusting a frame assembly of a cemented lens provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of the principle of another state of adjustment of a method for assembling and adjusting a frame assembly of a cemented lens provided in an embodiment of the present application;

[0042] Figure 6 A schematic diagram of the principle of a third state of adjustment of a method for assembling and adjusting a frame assembly of a cemented lens provided in an embodiment of the present application.

[0043] Among them, the reference numerals in the figure are:

[0044] 100. Frame assembly; 110. Lens bonding parts; 111. Plano-convex lens; 112. Plane window; 120. Optical axis; 130. Long-time curing glue; 140. Frame; 200. Mechanical housing assembly; 210. Mirror barrel; 220. Molded frame; 230. Center axis; 300. Inspection platform; 310. Flat crystal assembly and adjustment tooling; 320. Detection optical axis; 400. Micrometer. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0047] Embodiment 1:

[0048] See also Figure 3 , Figure 4 This embodiment provides a method for assembling and adjusting a lens frame assembly of a cemented lens, which is used to overlap the optical axis 120 of the lens cemented part 110 (optical lens) in the frame assembly 100 with the central axis 230 (i.e., the mechanical central axis) of the mechanical housing assembly 200 as much as possible, wherein the mechanical housing assembly 200 is composed of the frame 140 and the lens barrel 210 in the frame assembly 100. The lens cemented part 110 can be a plano-convex lens cemented part, a plano-concave lens cemented part, or other cemented lens structures; taking the plano-convex lens cemented part as an example, it is formed by gluing a plano-convex lens 111 and a plane window 112 together. This method is used to adjust and align the optical axis 120 of the plano-convex lens 111 (lens bonding part 110) and the central axis 230 of the mechanical housing assembly 200, to ensure that after the lens is assembled, the distance accuracy between the plano-convex lens 111 and the end face of the frame shell is within 10um, and the inclination between the optical axis 120 of the lens bonding part 110 (plano-convex lens bonding part) and the central axis 230 of the entire lens barrel 210 is within 30 seconds, which meets the high-precision quality requirements.

[0049] like Figure 1 As shown, a method for assembling and adjusting a lens frame assembly of a cemented lens in this embodiment mainly comprises the following steps:

[0050] Step S100, obtaining a frame assembly by turning the frame assembly to be processed, so that the outer dimensions of the frame assembly meet the assembly standard, wherein the frame assembly to be processed is formed by assembling and combining a lens bonding part and a frame.

[0051] In the specific process, the lens cementing part 110 and the frame 140 are first assembled and combined to form a frame assembly to be processed, which can be directly processed by centering lathe or by ordinary lathe. The centering lathe processing in this step has high precision, and the outer dimensions and shape and position tolerances of the assembled frame assembly to be processed are controlled and processed to obtain the frame assembly size that meets the assembly standard. The centering lathe turning ensures that the outer diameter of the molded frame 220 obtained after processing and the thickness of the molded frame 220 are relatively high in precision, thereby meeting the assembly requirements of the molded frame 220 and the lens barrel 210. The center deviation of the processed frame assembly is ignored; that is, after the turning is completed, it does not matter if the optical axis 120 of the lens cementing part 110 does not coincide with the center axis of the processed molded frame 220.

[0052] Since the center deviation of the processed frame assembly does not need to be guaranteed, a centering lathe is not necessarily used in this step. Therefore, during the assembly process, there is no need to perform inspection before turning, and the inspection step can be directly skipped, thereby optimizing the assembly process.

[0053] Step S200: split the frame assembly into a lens glued part and a molded frame, and connect the molded frame to the lens barrel to obtain a mechanical housing assembly.

[0054] like Figure 3 , Figure 4 As shown, in the specific process, the lens frame assembly after turning is removed to obtain the lens glued part 110 and the molded lens frame 220, and the molded lens frame 220 is tightly adjusted with the lens barrel 210 and connected by curing with waterproof glue. Since the outer dimensions (such as outer diameter and thickness) of the processed molded lens frame 220 meet the assembly standard, the molded lens frame 220 and the lens barrel 210 are tightly assembled and fixed, so that the coincidence of the central axis of the molded lens frame 220 and the central axis of the lens barrel 210 is very high, ensuring that the central axis of the molded lens frame 220 and the central axis of the lens barrel 210 coincide as much as possible, and can be almost considered coaxial; and ensuring that the end face of the molded lens frame 220 coincides with the end face of the lens barrel 210. The central axis 230 of the mechanical housing assembly 200 thus obtained can be regarded as not offset and tilted, and serves as the central axis of the entire mechanical housing assembly part.

[0055] Step S300, providing a flat crystal adjustment tool, and using the flat crystal adjustment tool on the center deviation detection equipment to adjust the offset between the optical axis of the lens bonding part and the central axis of the mechanical housing assembly to achieve a predetermined quality standard.

[0056] like Figure 4 , Figure 5 , Figure 6As shown, in a specific process, the flat crystal assembly tool 310 may include a flat glass plate, the upper and lower surfaces of the flat glass plate have good parallelism, and the upper surface of the flat glass plate has good flatness. The flat crystal is placed on the detection platform 300 of the center deviation detection device.

[0057] The lower surface of the flat glass plate is used to be placed on the detection platform 300 of the center deviation detection device, and the upper surface of the flat glass plate is used to carry the lens glued part 110 and the mechanical housing assembly 200. The parallelism of the lower surface of the flat glass plate and the upper surface of the flat glass plate reaches a predetermined parallelism quality value, so that the upper and lower surfaces of the flat glass plate are as parallel as possible, so that when the lens glued part 110 is carried on the detection platform 300, the upper surface as a reference surface will not cause the tilted placement of the lens glued part 110, thereby improving the measurement accuracy. The predetermined parallelism quality value of this embodiment can be parallelism within 1 second. High standard requirements are adopted to improve accuracy, so that high-quality dimensional requirements can be stably achieved during the assembly and adjustment process.

[0058] When the upper surface of the plane glass plate is used as a reference surface to carry the lens adhesive 110 and the mechanical housing assembly 200, the flatness of the upper surface of the plane glass plate reaches a predetermined flatness quality value, so that the spacing between the top of the lens adhesive 110 and the end surface of the mechanical housing assembly 200 meets the predetermined size requirements. The lower surface of the lens adhesive 110 (plano-convex lens adhesive) is adsorbed (a certain suction will be generated between the mirror surfaces) on the upper surface of the plane glass plate, and the lower end surface of the mechanical housing assembly 200 (lens frame) is against the upper surface of the plane glass plate. Only when the upper surface of the plane glass plate is very flat can the distance accuracy between the top of the plano-convex lens 111 and the lower end surface of the mechanical housing assembly 200 be guaranteed to be within 10um, and the optical axis 120 of the lens adhesive 110 and the central axis 230 of the mechanical housing assembly 200 will not be too tilted, and the tilt accuracy of the lens adhesive 110 relative to the central axis 230 of the mechanical housing assembly 200 is guaranteed to be within 30 seconds.

[0059] The predetermined flatness quality value of this embodiment is flatness 50 nanometers / 150 mm; that is, within any circular surface with a diameter of 150 mm, the flatness tolerance is 50 nanometers. The predetermined flatness quality value has a high precision, and can even ensure that the distance between the top of the plano-convex lens 111 and the lower end surface of the mechanical housing assembly 200 is within 8 um. It can even ensure that the tilting precision of the lens cementing part 110 relative to the central axis 230 of the mechanical housing assembly 200 is within 15 seconds.

[0060] like Figure 5 , Figure 6As shown, the flat glass disk is driven to rotate by the detection platform 300 of the center deviation detection device. During the rotation, the flat glass disk is first moved to ensure that the optical axis 120 of the lens bonding part 110 coincides with the detection optical axis 320 of the detection device, and then the mechanical housing assembly 200 is moved to adjust the center axis 230 of the mechanical housing assembly 200 and the detection optical axis 320 to coincide.

[0061] Therefore, if Figure 2 As shown, step S300 specifically includes the following steps:

[0062] Step S310, placing the lens bonding parts and the mechanical housing assembly on a flat wafer assembly tool, wherein the molded frame is located in the assembly hole of the mechanical housing assembly, and long-time curing glue is provided in the assembly hole.

[0063] like Figure 4 As shown, in the specific process, glue is dispensed in the assembly hole of the assembled mechanical housing assembly 200, and the glue is located in the glue dispensing groove of the molded frame 220. The long-time curing glue 130 can be a resin glue or a silicone. The long curing time can facilitate the subsequent offset adjustment of the lens bonding member 110 during the period of time when the curing is not performed. The curing time of the long-time curing glue 130 can be more than 8 hours, for example, 12 hours. Sufficient time is provided for the subsequent offset adjustment of the lens bonding member 110.

[0064] The process of placing the lens bonding member 110 and the mechanical housing assembly 200 on the flat wafer assembly tool 310 specifically includes two methods:

[0065] In the first method, the lens bonding member 110 is first placed on the wafer flatting tool 310 , and then the mechanical housing assembly 200 with glue is buckled on the lens bonding member 110 .

[0066] Place the lens bonding part 110 on a flat glass plate (flat crystal), and buckle the assembled mechanical housing assembly 200 onto the lens bonding part 110. The lens bonding part 110 is located in the assembly hole of the mechanical housing assembly 200. The lens bonding part 110 has a certain adjustment space in the assembly hole. The glue dispensed in the assembly hole of the mechanical housing assembly 200 is used to subsequently adjust and bond the lens bonding part 110 to the molded frame 220.

[0067] In the second method, the lens bonding member 110 is first placed on the assembly hole of the mechanical housing assembly 200 with glue, and then the lens bonding member 110 and the mechanical housing assembly 200 assembled together are turned upside down on the flat wafer assembly tool 310 .

[0068] Step S320: adjust the overlap between the optical axis of the lens bonded component and the detection optical axis through the flat crystal adjustment tooling to ensure that the offset between the optical axis of the lens bonded component and the detection optical axis meets the standard requirement.

[0069] like Figure 4 , Figure 5 As shown, in the specific process, after the lens adhesive 110 and the mechanical housing assembly 200 are placed on the flat glass disk, since the lower surface of the lens adhesive 110 and the upper surface of the flat glass disk are in mirror contact, a certain adsorption force is generated between the two, so that the lens adhesive 110 can be stably adsorbed on the upper surface of the flat glass disk, so that it moves with the flat glass disk. Therefore, the flat glass disk is driven to rotate by the detection platform 300 of the center deviation detection device. During the rotation, the degree of deviation between the optical axis 120 of the lens adhesive 110 and the detection optical axis 320 can be detected. According to the degree of deviation, the position of the flat glass disk is moved and adjusted, so that the flat glass disk moves with the lens adhesive 110 thereon, so that the optical axis 120 of the lens adhesive 110 and the detection optical axis 320 of the detection device are overlapped as much as possible, ensuring that the deviation between the optical axis 120 of the lens adhesive 110 and the detection optical axis 320 meets the standard requirement (for example, the tilt deviation is within 15 seconds). In this process, the position can be adjusted by gently tapping the flat glass plate according to the detected degree of deviation. During the rotation and tapping process, the position of the lens bonding part 110 on the flat glass plate is usually not changed, thereby ensuring the stability of the adjustment process.

[0070] Step S330: Move the mechanical housing assembly, adjust the overlap between the central axis and the detection optical axis, and ensure that the offset between the central axis and the detection optical axis meets the standard requirement.

[0071] like Figure 3 , Figure 6 As shown, in the specific process, a micrometer 400 is first provided to measure the change in size of the same point on the outer circle of the mechanical housing assembly 200 at different rotation positions during the rotation process. Secondly, according to the change in size, the position of the mechanical housing assembly 200 on the flat wafer adjustment fixture 310 is moved to ensure that the offset between the central axis 230 and the detection optical axis 320 meets the standard requirements.

[0072] During the rotation of the flat glass plate, the quadrant points on both sides of the outer circle of the mechanical housing assembly 200 in the X direction and the quadrant points on both sides of the Y direction are measured respectively by using a micrometer 400. By measuring the dimensions of the same point of the lens barrel 210 shell at different positions, the offset difference (variable size) of the outer circle center of the mechanical housing assembly 200 about the rotation center can be obtained. Usually, the detection optical axis 320 is located at the rotation center. According to the variable size, the central axis 230 of the mechanical housing assembly 200 (lens barrel) is adjusted to coincide with the detection optical axis 320 of the detection device as much as possible, that is, the higher the coincidence, the smaller the variable size. In this way, the central axis 230 of the mechanical housing assembly 200, the detection optical axis 320 and the optical axis 120 of the lens cementing part 110 are coincident as much as possible (three-axis coincidence), so that the offset of the central axis 230 and the detection optical axis 320 meets the standard requirements (for example, the tilt offset is within 15 seconds). Thereby, the offset accuracy of the optical axis 120 of the lens cementing part 110 and the central axis 230 (total optical axis) of the mechanical housing assembly 200 is ensured.

[0073] Step S400: fix the adjusted lens bonding component to the mechanical housing assembly.

[0074] In a specific process, the adjusted lens bonding parts and the mechanical housing assembly are left to stand for a predetermined time to allow the long-time curing glue to solidify.

[0075] In the present embodiment, the above steps of the method for assembling and adjusting the frame assembly of the glued lens ensure that the distance accuracy between the top of the lens glued part and the lower end surface of the lens barrel shell is 10um, or even 8um; in addition, it also ensures that the inclination accuracy of the optical axis of the lens glued part relative to the central axis (total optical axis) of the lens barrel in the mechanical housing assembly is 30 seconds, or even 15 seconds.

[0076] Embodiment 2:

[0077] The present application provides a glued assembly lens, which includes: a lens glued part, a molded frame and a lens barrel; the lens glued part, the molded frame and the lens barrel are assembled by the above-mentioned assembly method of the frame assembly of the glued lens.

[0078] The lens cemented piece may be a plano-convex lens, which is formed by cementing a convex spherical lens and a flat window together.

[0079] In summary, the present application provides a method for assembling and adjusting a lens frame assembly of a cemented lens, which can ensure high-precision optical standard requirements for the assembly and adjustment of the cemented assembly lens, and the spacing distance accuracy between the plano-convex lens and the end face of the frame shell can even reach 8um, and the inclination between the optical axis of the plano-convex lens and the central axis of the entire lens barrel can even reach 15 seconds. There is no need to perform the step of offset detection before turning, and it can be directly skipped, so that the assembly and adjustment process is more optimized.

[0080] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for assembling and adjusting a frame assembly of a cemented lens, characterized in that: The method comprises the steps of: The frame assembly to be processed is obtained by turning the frame assembly to make the outer dimensions of the frame assembly meet the assembly standard, wherein the frame assembly to be processed is formed by assembling and combining the lens glued parts and the frame; The frame assembly is separated into a lens glued part and a molded frame, and the molded frame is connected to a lens barrel to obtain a mechanical housing assembly; Providing a flat crystal adjustment tool, using the flat crystal adjustment tool on the center deviation detection device to adjust the offset between the optical axis of the lens cemented part and the central axis of the mechanical housing assembly to achieve a predetermined quality standard; The adjusted lens bonding piece is fixed to the mechanical housing assembly.

2. The method for assembling and adjusting a frame assembly of a cemented lens according to claim 1, characterized in that: In the step of providing a flat crystal adjustment tool and using the flat crystal adjustment tool on a center deviation detection device to adjust the offset between the optical axis of the lens cemented part and the central axis of the mechanical housing assembly to achieve a predetermined quality standard: The flat-wafer assembly and adjustment tool comprises a flat glass plate, the lower surface of which is used to be arranged on the detection platform of the center deviation detection device, and the upper surface of which is used to carry the lens bonding part and the mechanical housing assembly; Wherein, the parallelism between the lower surface of the flat glass plate and the upper surface of the flat glass plate reaches a predetermined parallelism quality value.

3. The method for assembling and adjusting the frame assembly of the cemented lens according to claim 2, characterized in that: The flatness of the upper surface of the flat glass plate reaches a predetermined flatness quality value, so that the spacing dimension between the top of the lens bonding part and the end surface of the mechanical housing assembly meets the predetermined dimension requirement.

4. The method for assembling and adjusting a frame assembly of a cemented lens according to any one of claims 1 to 3, characterized in that: In the step of providing a flat crystal adjustment tool and using the flat crystal adjustment tool on a center deviation detection device to adjust the offset between the optical axis of the lens cemented part and the central axis of the mechanical housing assembly to achieve a predetermined quality standard: Placing the lens glued part and the mechanical housing assembly on the flat wafer assembly tool, wherein the molded frame is located in the assembly hole of the mechanical housing assembly, and the assembly hole is provided with long-time curing glue; By means of the flat crystal adjustment tooling, the coincidence degree between the optical axis of the lens bonded part and the detection optical axis is adjusted to ensure that the offset between the optical axis of the lens bonded part and the detection optical axis meets the standard requirements; The mechanical housing assembly is moved to adjust the overlap between the central axis and the detection optical axis to ensure that the offset between the central axis and the detection optical axis meets the standard requirements.

5. The method for assembling and adjusting a frame assembly of a cemented lens as claimed in claim 4, characterized in that: The step of placing the lens bonding part and the mechanical housing assembly on the flat wafer assembly tool, wherein the molded frame is located in the assembly hole of the mechanical housing assembly, and long-time curing glue is provided in the assembly hole comprises: Placing the lens cemented parts on the flat wafer assembly tool; The mechanical housing assembly with glue is buckled onto the lens bonding part.

6. The method for assembling and adjusting a frame assembly of a cemented lens as claimed in claim 4, characterized in that: The step of placing the lens bonding part and the mechanical housing assembly on the flat wafer assembly tool, wherein the molded frame is located in the assembly hole of the mechanical housing assembly, and long-time curing glue is provided in the assembly hole comprises: Placing the lens glued part at the assembly hole of the mechanical housing component with glue; The lens bonding parts and the mechanical housing assembly installed together are buckled upside down on the flat crystal assembly tool.

7. The method for assembling and adjusting a frame assembly of a cemented lens as claimed in claim 4, characterized in that: In the step of adjusting the overlap between the optical axis of the lens bonded component and the detection optical axis by the flat crystal assembly and adjusting tool to ensure that the offset between the optical axis of the lens bonded component and the detection optical axis meets the standard requirement: The flat crystal adjustment tooling is rotated and the flat crystal adjustment tooling is moved to ensure that the offset between the optical axis of the lens bonding part and the detection optical axis meets the standard requirement.

8. The method for assembling and adjusting a frame assembly of a cemented lens according to claim 7, characterized in that: In the step of moving the mechanical housing assembly, adjusting the overlap between the central axis and the detection optical axis, and ensuring that the offset between the central axis and the detection optical axis meets the standard requirements: A micrometer is provided, and a change in the dimension of the same point on the outer circle of the mechanical housing assembly at different rotation positions during the rotation process is measured by the micrometer; According to the changed size, the position of the mechanical housing assembly on the wafer flat adjustment fixture is moved to ensure that the offset between the central axis and the detection optical axis meets the standard requirements.

9. The method for assembling and adjusting a frame assembly of a cemented lens according to claim 4, characterized in that: In the step of fixing the adjusted lens cementing part to the mechanical housing assembly: The adjusted lens bonding piece and the mechanical housing assembly are left to stand for a predetermined time to allow the long-time curing glue to solidify.

10. A glued component lens, characterized in that: include: A lens glued part, a molded frame and a lens barrel; the lens glued part, the molded frame and the lens barrel are assembled by the assembly and adjustment method of the frame assembly of the glued lens as described in any one of claims 1-9.

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