红外大变倍比连续变焦距系统光学被动式无热化设计

发布时间：2018-03-09 13:48

  本文选题：红外光学系统　切入点：无热化设计　出处：《光学技术》2017年01期 　论文类型：期刊论文

【摘要】：为了实现大变倍比连续变焦距红外光学系统的光学被动无热化设计,研究了连续变焦距系统的无热化设计基本理论及方法。提出了在大相对孔径大变倍比连续变焦距红外系统中采用光学被动式消热差的方法。推导出了连续变焦距系统光学被动消热差的计算方法。基于这种计算方法,设计了一个焦距30~150mm,长波红外工作波段在8~12μm,相对孔径1∶1.1的大变倍比、大相对孔径连续变焦距系统,并进行光学被动消热差设计,使系统在-30℃~60℃温度范围内MTF大于0.3满足成像要求。系统设计合理,成像质量满足要求,通过系统设计充分验证设计理论的可行性和实用性。
[Abstract]:In order to realize the optical passive non-thermal design of a large variable ratio continuous zoom infrared optical system, In this paper, the basic theory and method of non-thermal design for continuous zoom system are studied. The method of optical passive thermal difference in large relative aperture and large variable ratio continuous variable focal length infrared system is put forward, and the continuous zoom length is deduced. A method for calculating the optical passive thermal difference of the system. Based on this method, A system with a focal length of 30 ~ 150mm, a long wave working band of 12 渭 m with a relative aperture of 1: 1.1, and a continuous zoom system with a large relative aperture is designed, and the optical passive heat dissipation difference is designed. The MTF of the system is greater than 0. 3 in the temperature range of -30 鈩，

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