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The present invention belongs to the field of optical, involves an optical lens assembly device and method

by:ChangHui     2020-05-16
Technical background: in optical devices, a set of optical lens is usually composed of multiple single lens according to the design space assembly within the lens barrel, constitute, lens assembly way using circular more glue and compression ring clamp fixed way; Convenient for assembly and adjustment, the general meeting will be a single optical lenses in a frame to form the lens component, then the lens components according to the design space put her inside the cylinder. Due to a single optical lens assembly accuracy of the overall image quality has a direct effect of optical equipment, to ensure the quality of the optical system imaging in optical lens then frame to complete the dispensing and pressure after the compaction work, to the lens component centering processing to ensure that the optical lens optical axis and mechanical axis of picture frame coherence. Lens component centering on processing in high precision centering commonly lathe is complete, the centering machining is together with the frame and lenses, brought a lot of risks to optical lenses: first, if human error appeared in the process of machining, will directly result in optical lens rupture or scratches that cannot be used. Second, process control is bad, if the amount of feed/super bad, will make the picture frame and lens barrel assembly clearance greatens, unable to meet the requirements of optical design, optical lens assembly frame and could only be removed for centering processing, not only increased the workload also brings the risk of a second. Third, centering processed picture frame, due to the force, stress release process, it is difficult to ensure that final machining precision can meet the design requirements. Fourth, to meet the requirements of centering processing, need additional design process hole in the frame and process flange, design, and cause the material waste. Therefore, aiming at the lens component centering processing in the assembly process of many problems, needs to develop a more secure and reliable optical lens assembly method and assembly device. Technical implementation elements: in order to solve the current optical lens centering in the assembly process and machining the existing processing is difficult, high risk, often need to rework many times and precision is difficult to guarantee the technical problems, the present invention provides a high precision optical lens assembly device and method. Of the technical scheme of the invention is: a high precision optical lens component assembly device, it is special in: including loading platform, at least three photoelectric proximity sensor and at least three telescopic adjusting rod; Described with adjustable platform center runs round hole/circular groove, described the circular hole/set inside a circular groove can be vertical annular lifting platform; Described in the annular lifting platform center fixed set vacuum adsorption; Described in the annular lifting platform used for placing and adjusting for picture frames; Vacuum adsorption is used to described for assembling the lens; Described photoelectric proximity sensor and expansion regulating rod are uniformly distributed along the circumference Settings it is installed on the platform, and point to install the platform. Described further, photoelectric sensor and distance are three telescopic adjusting lever. Further, described the annular lifting platform concentric Settings shown round hole/circular groove, in order to further improve the assembly accuracy of adjustment. The present invention also provides a kind of based on the high precision optical lens component assembly device assembly method of optical lens component includes the following steps: 1) Adjust the photoelectric proximity sensor point and position, make its center to install adjustable platform at the same time, distance and ensure all the photoelectric sensor to the center of the optical platform is equal; 2) Placed for assembling frames in the ring on the mesa of lifting platform, reduce annular lifting platform height, make the picture frame on the end face below the mesa of the platform; 3) Place for assembling the lens on the vacuum adsorption, adjust the position for assembling the lens that all photoelectric proximity sensor number, record number, and then open the vacuum adsorption, will stay assembly lens adsorption fixed; 4) Elevated ring lifting platform height, real-time adjustment for assembly frame position, and then frame completely to assembly the lens inside; 5) In assembly frame circular uniform installation at least three telescopic adjusting rod, to make contact with for assembly frame telescopic adjusting lever on the top; 6) Coordinate adjustment scale adjustment rod length, real-time numerical distance to see all the photoelectric sensor, when all the photoelectric sensor values consistent, it indicates that the lens optical axis and frame mechanical axis coaxial; 7) Loaded clamping ring, the lens to circle around the injecting pressure, after waiting for glue to work, the lens component assembly is completed. Compared with the existing technology, the advantages of the invention, the invention adopts a new pack the idea, at the same time with high precision assembly device, on the premise of meet the assembly accuracy, can guarantee the lens component directly to the lens axis and mechanical axis alignment, picture frame without centering processing again, avoid the traditional centering in the process of assembling and machining damage of optical lenses and rework, and greatly improve the efficiency of the assembly at the same time, save the manpower and financial cost. The appended drawings show figure 1 is a high precision optical lens assembly device present invention example diagram; Figure 2 is shown in figure 1 the state of the high precision optical lens assembly plant schematic diagram ( The decline of annular lifting platform lens below the platform when loading state) ; Figure 3 is shown in figure 1 and high precision optical lens assembly device axial sections; Reference: 1 - With the platform, 2 - Telescopic adjusting lever, 3 - Photoelectric sensor, 4 - Picture frame, 5 - Lenses, 6 - Lens compression ring, 11 - Circular lifting platform, 12 - Vacuum adsorption. Concrete implementation way of combining the appended drawings to this invention further instructions. As shown in figure 1, the present invention provides the optical lens assembly device, including a loading platform, uniformly distributed along the circumference respectively set in three photoelectric proximity sensor of the platform and three telescopic adjusting rod; Loading platform center runs round hole, concentric set inside a circular hole with vertical annular lifting table, lifting platform set up a cylindrical vacuum adsorption. In other cases, it can also be adjustable platform center open circular groove, described in the circular groove concentric set circular lifting platform. Use as shown in figure 1 optical lens optical lens assembly device assembly process is as follows: 1, the appropriate placement with adjustable platform along the circumferential direction uniform installation described three photoelectric sensor, adjust the photoelectric proximity sensor point and position, make its center to install adjustable platform at the same time, and ensure the three photoelectric proximity sensor to the center of the optical platform is equal; 2, place the processing done for assembling frames in the ring on the mesa of lifting platform, reduce annular lifting platform height, make the picture frame on the end face below the mesa of the platform, as shown in figure 2. 3, placed for assembling the lens in the center of the platform on the vacuum adsorption, adjust the position of the lens to make three photoelectric proximity sensor values are consistent, record number; Then open the vacuum adsorption, will be assembling the lens firmly fixed adsorption; Circular lifting platform height, 4, and real-time adjustment frame position, and make the lens completely into the frame; 5, the frame circular uniform installed three telescopic adjusting lever, telescopic adjusting lever at the top of the contact with the frame; 6, coordinate adjustment of three telescopic adjusting rod length, distance and real-time view three photoelectric sensor values, when three photoelectric sensor values consistent, it indicates that the lens optical axis and frame mechanical axis coaxial, complete the adjustment. 7, into the lens ring, clamping ring around note glue, after waiting for glue to work, the lens component assembly is completed.
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