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基于切换式两档变焦光学装置,设计了一种焦距600mm/1 200mm可变,靶面尺寸10.4mm×7.6mm,工作波段400nm~700nm,通光口径为136.6 mm/170 mm,最大畸变小于0.2%,传递函数值在空间频率60lp/mm处不低于20%的光学系统,该系统经指标及像质测试、环境例行试验、实景成像试验的验证,系统各项技术指标均满足某军用测量设备的要求。
Based on the switchable two-stage zoom optical device, a focal length of 600mm / 1 200mm was designed, the target size was 10.4mm × 7.6mm, the working wavelength range was 400nm ~ 700nm, the pass aperture was 136.6 mm / 170 mm and the maximum distortion was less than 0.2 %, And the transfer function is not less than 20% at the spatial frequency of 60 lp / mm. The system is verified by index and image quality test, environmental routine test and real imaging test. All the technical indexes of the system meet the requirements of a military Measurement equipment requirements.