摘要
为了实现微光、红外双波段同时探测目标的目的,设计了一种双波段大视场共口径光学系统。为了保证不同波段所获取探测目标的一致性,该光学系统通过共用卡塞格林反射式系统同时接收微光与红外双光束,然后双波段光束分别经由红外通道与微光通道成像于探测器上,适用于非制冷型长波红外探测器和低照度CMOS。在微光0.49~0.66μm,长波8~12μm下工作。系统视场角为6.4°×4.8°,微光焦距为160 mm,F数为4;长波红外焦距为125 mm,F数为3.1,该系统采用机电主动式补偿消热差的方法,实现在-40℃~60℃环境温度范围内无热化设计。设计结果表明系统成像质量良好,可实现双波段远距离探测。
In order to realize the simultaneous detection of targets by low-light-level and infrared dual-band,in this paper,a dual-band large field-of-view common aperture optical system is designed.In order to ensure the consistency of the detection targets acquired in different bands,the optical system simultaneously receives the low-light-level and infrared double beams through the shared Cassegrain reflection system;and then the dual-band beams are imaged on the detector via the infrared channel and the low-light-level channel,respectively;which are suitable for uncooled long-wave infrared detectors and low-light-level CMOS.It operates at the waveband for a low-light-level of 0.49 to 0.66μm and a long wave of 8 to 12μm.The system has an angle of view of 6.4°×4.8°;a visible light focal length is 160 mm and F number is 4;a longwave infrared focal length is 125 mm,and F-number is 3.1.The athermalization design is achieved in the ambient temperature range from-40°C^60°C by using an electromechanical active compensation for the aberration difference.The design results show that the system has good image quality and can realize dual-band long-distance detection.
作者
潘璐
向阳
李琦
李显杰
阎帅
PAN Lu;XIANG Yang;LI Qi;LI Xian-jie;YAN Shuai(School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022)
出处
《长春理工大学学报（自然科学版）》
2020年第6期1-7,共7页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
吉林省科技厅项目(KYC-JC-XM-2018-197)。
关键词
双波段
卡塞格林反射系统
共口径
光学设计
dual band
Cassegrain reflection system
common aperture
optical design
