Design of panoramic laser receiving optical system based on prism
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Department of Opto-electronics Information Engineering, College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
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Received Date:
2013-09-24
Accepted Date:
2013-10-28
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Abstract
In order to realize omnidirectional detection and precise positioning of a target, a solution of the nonsymmetrical receiving optical system used for laser panoramic detection was presented based on imaging optics and non-imaging optics theory. Due to the significant difference between the meridianal and sagittal field, it was necessary to join the special asymmetric system to balance the big difference. Therefore the prism system and the inverted telescopic system were adopted to condense the field of sagittal direction. Then, the optical energy can be collected to the circular detector with a diameter of 1.5mm after the focusing system. The system was composed by an echelon prism, a aspheric lens, two cylindrical lens and two lenses, with the F-number of 0.56. The results show that a single set of system can complete the detection of ±30° field of view and six sets of receiving systems constitute a 360° field of view to complete panorama detection. This result is helpful for realizing no blind spot detection. The practical system has small volume, compact structure and good applicability.
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