Calibration system and calibration method for optical beam orientation

Abstract

The invention discloses a calibration system for optical beam orientation. The calibration system comprises a first optical lens, a second optical lens, a third optical lens, a fourth optical lens, an optical wedge and two optical receiving devices; an optical beam is reflected by the first optical lens and the second optical lens in sequence and passes above or below the fourth optical lens, after the optical beam is reflected by the third optical lens and the fourth optical lens, the optical beam passes above or below the third optical lens and then shines to the optical wedge, and two reflecting surfaces of the optical wedge incline to the direction of incident light beams; the optical receiving devices are used for receiving the optical beam reflected by the two reflecting surfaces of the optical wedge, and the second optical lens and the fourth optical lens are adjustable optical lenses. The invention further discloses a calibration method of the calibration system. The calibration system and the calibration method have automatic real-time calibration functions for the optical beam orientation, and the functions can serve as front-end systems for all kinds of laser precise application systems. The calibration system can record the state of a normal work optical path, and the quick and precise optical path recovery can be achieved.

Description

Technical field [0001] The invention belongs to the field of optoelectronic technology, and specifically relates to a beam orientation calibration system and a calibration method thereof. Background technique [0002] In the application fields of laser technology, such as free space optical communication, laser precision measurement, laser biomedicine and other application fields, there are higher requirements for the direction and azimuth stability of the laser beam. [0003] For precision laser applications, due to the temperature deformation of the laser cavity, the instability of the optical components on the transmission path, and the influence of various environmental disturbance factors, the laser beam will always show a slight azimuth shift, including angle shift and parallel shift shift. When the offset is large, it will seriously affect the stability of the subsequent system. [0004] In addition, in actual work, it is often necessary to restore the optical path of the op...

AI Technical Summary

Problems solved by technology

In the existing technical solutions for beam orientation calibration, precision and convenience cannot be achieved at the same time. Although complex optical systems are accurate, they usually cannot quickly and easily calibrate or restore the optical path, and the cost is generally high; simple Although the optical system takes into account the latter, it is often not accurate enough. Existing solutions greatly restrict the application of lasers in fields with precise pointing requirements

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