New machining method of high precision infrared window part

Haicheng Yang; Ying Su; Zengqi Xu; Rui Guo; Wenting Li; Feng Zhang; Xuanmin Liu

doi:10.1117/12.2243726

28 October 2016 New machining method of high precision infrared window part

Haicheng Yang, Ying Su, Zengqi Xu, Rui Guo, Wenting Li, Feng Zhang, Xuanmin Liu

Proceedings Volume 9683, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 96831O (2016) https://doi.org/10.1117/12.2243726
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

Most of the spherical shell of the photoelectric multifunctional instrument was designed as multi optical channel mode to adapt to the different band of the sensor, there were mainly TV, laser and infrared channels. Without affecting the optical diameter, wind resistance and pneumatic performance of the optical system, the overall layout of the spherical shell was optimized to save space and reduce weight. Most of the shape of the optical windows were special-shaped, each optical window directly participated in the high resolution imaging of the corresponding sensor system, and the optical axis parallelism of each sensor needed to meet the accuracy requirement of 0.05mrad.Therefore precision machining of optical window parts quality will directly affect the photoelectric system's pointing accuracy and interchangeability. Processing and testing of the TV and laser window had been very mature, while because of the special nature of the material, transparent and high refractive rate, infrared window parts had the problems of imaging quality and the control of the minimum focal length and second level parallel in the processing. Based on years of practical experience, this paper was focused on how to control the shape and parallel difference precision of infrared window parts in the processing. Single pass rate was increased from 40% to more than 95%, the processing efficiency was significantly enhanced, an effective solution to the bottleneck problem in the actual processing, which effectively solve the bottlenecks in research and production.

Citation Download Citation

Haicheng Yang, Ying Su, Zengqi Xu, Rui Guo, Wenting Li, Feng Zhang, and Xuanmin Liu "New machining method of high precision infrared window part", Proc. SPIE 9683, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 96831O (28 October 2016); https://doi.org/10.1117/12.2243726

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KEYWORDS

Infrared radiation

Surface finishing

Polishing

Infrared imaging

Imaging systems

Sensors

Laser video displays

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