Parallel light tube wave-front aberration pre-compensation device based on adaptive optics

Abstract

A parallel light tube wave-front aberration pre-compensation device comprises a large-caliber long-focal-distance parallel light tube and an adaptive optical system. The large-caliber long-focal-distance parallel light tube comprises a reflection mirror assembly and window glass. The adaptive optical system comprises an optical source assembly, a beam splitting piece, a first off-axis reflection mirror, a second off-axis reflection mirror, a third off-axis reflection mirror, a wave-front detector, a wave-front corrector and a turn-back reflection mirror. The parallel light tube wave-front aberration pre-compensation device can detect wave-front aberrations, introduced into the large-caliber long-focal-distance parallel light tube, caused by processing, installation, adjustment, temperature changes, temperature gradients, airflow disturbance, platform vibration and other factors in real time and can eliminate the wave-front aberrations through correcting in a high-accuracy mode in real time. In this way, the correction accuracy and the correction efficiency of the large-caliber long-focal-distance parallel light tube are greatly improved, the development difficulty of the large-caliber long-focal-distance parallel light tube is substantially lowered, a lot of test time is saved, and a lot of test cost is reduced.

Description

technical field [0001] The invention relates to a collimator wavefront aberration precompensation device, in particular to a collimator wavefront aberration precompensation device based on adaptive optics, which belongs to the field of optical detection. Background technique [0002] The collimator is the most commonly used optical system calibration device, which can emit parallel light to simulate an infinitely distant target. High-precision collimators are usually an indispensable measurement benchmark for the adjustment and image quality inspection of infinite conjugate imaging optical systems such as photographic objectives and telescopic objectives. In the past, collimator tubes had smaller apertures, shorter focal lengths, smaller processing and adjustment errors, and were less affected by environmental factors such as temperature changes, temperature gradients, airflow disturbances, and platform vibrations. Compensation correction. With the increase of aperture and...

AI Technical Summary

Problems solved by technology

[0011] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a collimator wavefront aberration precompensation device based on adaptive optics, to overcome the current collimator with large diameter and long focal length based on the vacuum method The shortcomings of vacuuming effectively solve the influence of environmental factors such as temperature changes, temperature gradients, airflow disturbances, and platform vibrations on the calibration accuracy of large-aperture and long-focus collimators, and realize real-time detection and pre-compensation of wavefront aberrations. Significant savings in test time and cost, significantly improved calibration performance

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