西安应用光学研究所 陕西 西安 710065
管伟(1990— ),男,高级工程师,硕士,从事光机系统装调技术研究。623439578@qq.com
王章利(1981— ),男,研究员,硕士,从事光学系统制造工艺技术研究。ewzl@163.com
收稿:2026-03-25,
修回:2026-05-11,
录用:2026-05-18,
网络首发:2026-07-23,
纸质出版:2026-07-20
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管伟,王章利,刘伟光等.宽幅高清成像系统精准定心装配与像面调校技术[J].光学技术,2026,52(04):392-396.
GUAN Wei,WANG Zhangli,LIU Weiguang,et al.Lens centering and sensor positioning for the wide-field high-definition camera[J].OPTICAL TECHNIQUE,2026,52(04):392-396.
宽幅高清成像系统一般由透射光学镜头与数亿级像素探测器组成,视场大,分辨率要求高,对装调环节提出了极高的精度需求。针对宽幅高清成像系统制造需求,提出了基于光定心加工的镜头装调方法,通过分段定量胶合工艺,保证光学镜片胶合前后面形变化量不超过5%;通过基于回转定心原理的光轴找正方法,实现光学镜片光轴角度校准精度达到6″;通过基于测量反馈补偿的车校方法,实现光学镜组间隔校准精度达到2μm。同时,提出了宽幅高清成像系统探测器精准装调方法,针对目前平行光管视场小、无法全视场评价的问题,采用阵列式目标发生器,通过量化解算全视场各处图像清晰度来评价装调精度,保证探测器感光面与光学镜头像面高精度重合,装调精度可达3μm。最后,通过实物研制与外景试验,成像系统全局与局部图像良好,验证了方法的有效性。
A wide-field high-definition imaging system typically consists of a transmission optical lens and a detector with hundreds of millions of pixels. It features a large field of view and high-resolution requirements
imposing extremely stringent precision demands on the alignment process. To address the manufacturing needs of such systems
a lens alignment method based on light centering processing is proposed. Through a segmented quantitative bonding process
the surface shape variation of optical lens elements before and after bonding is controlled within 5%. Utilizing an optical axis alignment method based on the rotary centering principle
the angular calibration accuracy of the optical lens axis achieves 6 arcseconds (6″). Furthermore
a lathe-based alignment method with measurement feedback compensation enables the calibration accuracy of optical lens group spacing to reach 2 micrometers (2μm).Simultaneously
a precision alignment method for the detector in wide-field high-definition imaging systems is presented. To overcome the limitation of small field-of-view in conventional collimators
which cannot evaluate full-field performance
an arrayed target generator is employed. This method quantitatively calculates the image sharpness across the entire field to evaluate alignment accuracy
ensuring the high-precision coincidence between the detector photosensitive surface and the optical lens image plane. The achieved alignment accuracy is 3μm.Finally
physical prototype development and outdoor field tests demonstrate excellent global and local image quality of the imaging system
verifying the effectiveness of the proposed methods.
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