一种改进的激光测距机接收光学系统  

An Improved Receiving Optical System in a Laser Range Finder

作　　者：薛骊瑶 朱晓凯[1] 

机构地区：[1]中国电子科技集团公司第二十七研究所,郑州450047

出　　处：《电光系统》2017年第1期41-44,共4页Electronic and Electro-optical Systems

摘　　要：为了实现测距机小型化、轻量化，并提高激光测距机对背景杂散光的抑制能力和对漫反射小目标的探测能力，对现有接收光学系统进行改进设计。采用了简洁的大口径非球面光学系统设计实现系统小型化，并在结构件中加入消杂光挡光环进行杂散光的有效抑制。经过理论分析和试验验证，此种设计可提高设备的整体性能。结果表明，在相同的背景和能见度下，对同一目标测距，挡光环对抑制杂散光、降低噪声、提高探测灵敏度起到较好的作用。优化设计后的光学系统加挡光环后测距能力提高到原来的约1．4倍，具有更好的测距威力。The existing receiving optical system is designed to realize the miniaturization and light-weight and to im- prove the suppression capability of the background stray light and the diffuse reflection small-target detection capabil- ity of a laser rangefinder. That is using a large aperture aspheric surface optical system to realize the miniaturization of the system and adding anti-stray-light vane to the structure to suppress stray light. The design can improve overall performance of the equipment through the theoretical analysis and experimental validation. The results obtained indi- cate that anti-stray-light vane has good effects on stray light suppression,noise reduction and detection sensitivity im- provement under the same background and visibility conditions. After adding the anti-stray-light vane the ranging ca- pability of the laser range finder is improved by a factor of 2.4 and has a good ranging capability.

关 键 词：杂散光 大口径非球面 挡光环 测距威力 

分 类 号：TN249[电子电信—物理电子学]