Optical Design Of A Portable Laser Ranging Telescope

Pulsed laser ranging technology is a technology of distance measurement using pulsed laser,widely used in military and civilian.In use,There are many mature products abroad,which are easy to carry and have high precision.Laser distance measurement in China Mirrors are at a disadvantage in competition with foreign products in terms of miniaturization,light weight and ranging accuracy.Therefore,it has a good prospect for the research of laser ranging and telescopic system.In this case,it is of great significance to study the design and development of the ultra portable laser ranging telescope.Firstly,several methods of laser ranging are briefly introduced,and the principle of pulse laser ranging is described emphatically.On this basis,the overall design scheme of the ranging system is put forward,and the feasibility of the scheme is analyzed.In order to realize the miniaturization and lightening of the ultra portable laser ranging telescope,the laser ranging receiving part and the telescopic objective lens are shared and utilized.Zemax multiple structure optimization can meet the performance requirements of the telescopic objective and meet the laser receiving part.According to the performance requirements,the magnification factor of the telescopic system optimized by Zemax optical software is 6,the focal length of the objective lens is 104 mm,and the field of view of the objective lens is achieved.6 degree,the entrance pupil diameter is 26 mm,the optical total length is controlled within 100 mm,and the two stage spectral chromatic aberration of the system meets the design requirements.The emission angle of the laser emission system is 0.5mrad The receiving angle of the receiving system is 1mrad,the measuring distance is 1000 m,and the liquid crystal reticle is used to facilitate debugging the laser measuring points.Considering the processing and adjustment of the ultra portable laser ranging telescope,we need to transmit and receive light from the laser range finder.The tolerance analysis is carried out in the learning system,and the imaging quality within the tolerance range meets the design requirements.Based on the literature review,combined with the work practice,ZEMAX software is used to simulate the design.The optical structure parameters of the ultra portable laser ranging telescope are evaluated and the image quality is evaluated.The results show that the system has the advantages of simple structure,low processing difficulty,low cost,good imaging quality and excellent performance.Widely used ultra portable laser ranging telescope.