Adaptive liquid crystal optical system capable of opening loop and closing loop

Abstract

The invention belongs to the adaptive optical field and discloses an adaptive liquid crystal optical system capable of switching between an open loop adaptive correction function and a close loop adaptive correction function, relating to the combination of optical elements, such as a liquid crystal corrector, a wavefront detector, a wave plate, a PBS beam splitter and the like. The invention provides an adaptive liquid crystal optical system capable of opening loop, which has simple operation, low resetting difficulty and favourable stability and has the close loop adaptive correction mode. The system adopts the PBS beam splitter to replace a common polaroid, so that the adaptive liquid crystal optical system has high energy utilization ratio; as the PBS performs polarized beam splitting after being arranged in the liquid crystal corrector and is combined with an optical rotation mechanism, a detection corrector does not need to rotate PBS during response matrix, avoiding the optical axis retting error caused by the motion. In addition, the system can be switched into the adaptive correcting optical system capable of closing loop, and can quantificationally detect the correction performance of the detection system in the loop closing mode so as to provide convenience for resetting the adaptive liquid crystal optical system capable of opening loop.

Description

technical field [0001] The invention belongs to the field of adaptive optics, and relates to a combination of optical elements such as a liquid crystal corrector, a wavefront detector, an adaptive optics controller, a wave plate and a PBS beam splitter, and specifically relates to a combination of open-loop adaptive correction and Liquid crystal adaptive optics system capable of switching between closed-loop adaptive correction functions. Background technique [0002] The function of the optical wavefront adaptive correction system is to compensate and correct the distorted wavefront of the incident light in real time to obtain ideal optical imaging. [0003] The liquid crystal corrector adopts microelectronics technology, utilizes the characteristics of high pixel density of liquid crystal devices, has high correction precision, and has a mature manufacturing process. Therefore, the adaptive system of the liquid crystal corrector has great application potential. However, t...

AI Technical Summary

Problems solved by technology

When the adaptive optics system is in the open-loop correction mode, the energy utilization rate is nearly double that of the closed-loop mode; when the adaptive optics system is in the closed-loop correction mode, the correction accuracy and stability can be monitored, which makes up for the inability of the simple open-loop correction system Quantitative understanding of deficiencies in correction accuracy

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