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Li J.,Jiangsu Shuguang Opto Electronics Co. | Zhu Y.,Jiangsu Shuguang Opto Electronics Co. | Mao J.,Jiangsu Shuguang Opto Electronics Co. | Tu J.,Jiangsu Shuguang Opto Electronics Co.
Chinese Optics Letters | Year: 2010

We focus on a more difficult kind of beam splitter in a cemented cube. The specification is that when the incident angle is 45°, the reflectivity in the visible range is 70%±2%, and the reflectivity at 1570 nm is not less than 90%. The film is thick, so cracking and peeling often occur after coating without ion assisted deposition on a vacuum-coating plant made in China. Some experiments are conducted after changing the beam splitter's design, coating material, evaporation technique, and so on. Final results show that the beam splitter has good properties and can pass humidity, temperature, salt spray fog, and other kinds of environmental tests. © 2010 Chinese Optics Letters.

Huang Z.,Jiangsu Shuguang Optoelectronics CO. | Li X.,Jiangsu Shuguang Optoelectronics CO.
Guangxue Jishu/Optical Technique | Year: 2010

The range accuracy of laser rangefinder(LRF) on capturing air moving target in manual tracking equipment is very low, so it is difficult to found target air route. In order to solve the problem, a laser axis sync deflection control technology (LASDCT) is proposed. The target image is taken with camera, and then the tracking error is calculated with image processor, some small parts of the LRF are controlled to deflect, so the laser sending and receiving optical axis are changed synchronously, and the tracking error is compensated effectively. Owing to these operations, the range accuracy is improved. The principle and calculation method of laser sending and receiving optical axis variation are described, and the principle and implementation method of LASDCT are also described. The influence on tracker performance by this technique is analysed. Indoor bench test and outdoor tracking test are given. The test results show that if this technology is applied in manual tracking equipment, the range accuracy can improve obviously. This technology is worth utilization and generalization.

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