光电自准直经纬仪是一种集成了光电自准直仪和经纬仪双重功能的精密测量系统, 其光路由目视内调焦望远系统和光电自准直系统两部分组成。首先提出共光路光学系统的设计原理与方法, 优化设计成像清晰的内调焦望远系统和分辨率较高的自准直光学系统。然后对影响成像质量最大的多胶合棱镜进行公差分析和设计, 给出既满足成像要求又兼具经济性的加工公差值。最后对设计的光学系统进行精度测试。测试结果表明, 所设计的光学系统在±20″视场范围内自准直精度达到0.6″, 可以满足设计要求。

The photoelectric self-collimation theodolite is a kind of precision measurement system that integrates dual functions of the photoelectric autocollimator and the theodolite. The optical path of the photoelectric self-collimation theodolite consists of two parts that include the visual inner-focusing telescope system and the photoelectric self-collimation system. Firstly, the design principles and methods of the common optical path optical system are proposed. The inner-focusing telescope system with good imaging ability and the self-collimation optical system with high resolution are optimally designed. Then, the tolerance analysis and design of the multi-glue prism that influences the image quality most are carried out. And the processing tolerance value which satisfies the imaging requirement and economy is given. At last, the precision of the designed optical system is tested. The experimental results show that the self-collimation accuracy of the designed optical system is 0.6″ within the field of view of ±20″, which can meet the design requirements.