室内多波段光轴一致性测试系统的设计

介绍用于室内检测多波段光电设备光轴一致性的测试系统。该系统采用准直平行光管为测试系统提供无穷远目标。为满足全波段测试，光束无中心遮拦，系统选用离轴抛物面全反射光学系统。采用多光谱分光镜为激光光斑提供瞄准基准，带温控热十字丝的高斯目镜为红外和可见光波段提供瞄准基准，实现了光电设备之间可见与红外、可见与激光、激光与红外光轴的一致性测试。系统具有测试精度高、测试结果可靠等特点。根据初步估算，可见与红外、可见与激光、红外与激光之间的光轴一致性测试精度分别达到了4.01″， 1.08″和 4.05″的水平。该系统有效解决了多波段光测设备光轴间的一致性测试问题。

Design of lab test system for boresight of multi-channel optical axes

An electro-optical equipment to detect the boresight of multi-channel optical axes in laboratory is introduced. A collimator is adopted to provide an infinite target for the test system.An off-axis parabolic total reflection optical system is used to satisfy the full-wavelength test without central obstruction. A ZnS multispectral beam-splitter is adopted to offer pointing reference for laser spot,and a Gauss ocular with temperature controlled cross hair is adopted to offer pointing reference for visible light and infrared wave band. In this way,the boresight test between optical axes for visible light,infrared and laser is realized. This test system is accurate and reliable. According to the preliminary estimate,the measured boresight accuracy between visible light and infrared reached 4.O1″,visible light and laser reached 1.08″,infrared and laser reached 4.05″. This system can be used effectively in multi-channel optical-axes boresight test.