Laser radar optical system with optical axis calibrating function and optical axis calibrating method
A laser radar and optical system technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of complex operation and external auxiliary devices, and achieve the effects of simple operation, high optical axis calibration accuracy, and convenient use.
Inactive Publication Date: 2012-02-15
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS +1
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Abstract
The invention discloses a laser radar optical system with an optical axis calibrating function and an optical axis calibrating method thereof. A laser emission mirror in the optical system is arranged on an adjusting mechanism which has a pitch angle and an azimuth angle being adjustable accurately and is locked; a retroreflection mirror group is arranged on the outer sides of the laser emission mirror and a signal receiving optical part; and a lighting source is arranged on the outer side between a field diaphragm and a relay lens group. The central position of the field diaphragm representing a laser signal receiving optical axis and the laser far-field spot position representing a laser emission optical axis are successively imaged into a CCD (charge coupled device) camera for detecting a target picture through utilizing a retroreflection characteristic of a pyramid prism in the retroreflection mirror group. The laser emission mirror is adjusted, so that the two positions are coincided in the CCD camera to complete optical axis calibration. The calibrating method disclosed by the invention has high accuracy, is simple to operate, does not rely on an external auxiliary assembly,and is convenient to use.
Application Domain
Wave based measurement systems
Technology Topic
Ccd cameraRelay lens +10
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