军用光电仪器由于移动灵活的需要, 通常采用车载平台, 车载平台又会承载发射和接受光路, 因此会包含多个激光器和光学元件。这就造成以往固定平台的光路平行性检测方法需要进行一定的升级以适应车载平台的需要。为了实现光电干扰功能, 车载平台同时配备了对应谱段的多台激光器, 还有多谱段的成像系统以及测距装置, 对于发射光路和接收光路的平行性要求就更为复杂, 因此本文根据车载光电平台的特点, 提出了一整套的光路平行性检测方法。检测结果表明, 此套方法简单实用, 检测精度可达15 μrad以内。

For the flexible requirement to the photoelectric instrument, the vehicle platform is needed to load the transmitting light path and receiving light path, often including several lasers and many mirrors. There have been some methods to measure the parallelism of optical paths for the fixed platform which is not suitable for the vehicle platform. Therefore, a certain improvement should be made to the measurement methods for parallelism of optical paths for the vehicle-based photoelectric system. In our system, the optical paths of four laser systems and three imaging system need to be adjusted into the same line or paralleling each other. Therefore, the requirements for the vehicle platform are more complicated for the parallel test. According to the feature of the platform based on the vehicle, a systemic method was presented for the parallel test. The measurement results show that these methods are simple and practical for the measurement of parallelism in vehicle-based photoelectric devices and the measurement errors between each light path are all less than 15 μrad.