System capable of solving inclination problem of narrow field of view lens in wave aberration detection and method thereof

Abstract

The invention relates to a system capable of solving an inclination problem of a narrow field of view lens in a wave aberration detection process and a method thereof. The system comprises a laser interferometer, a pentagonal prism, an autocollimation theodolite, a planar mirror and an optical axis directional tool which is in common optical axis with a narrow field of view lens to be detected. The laser interferometer, the pentagonal prism, the optical axis directional tool and the planar mirror are provided on a same optical path in order. The pentagonal prism is provided on an emitting optical path of the autocollimation theodolite. The system capable of solving the inclination problem of the narrow field of view lens in wave aberration detection and the method thereof have the characteristics of high detection precision, a short detection period and good repeatability.

Description

technical field [0001] The invention belongs to the field of optical detection, and in particular relates to a system and method capable of solving the problem of optical axis deflection encountered by a small field of view lens in the wave aberration detection process. Background technique [0002] With the continuous development of aerospace and aviation, small field of view lenses are widely used in the above fields due to their high resolution. The wave aberration of the optical system is one of the important indicators to characterize the imaging quality of the lens. It has nothing to do with the performance parameters such as the focal length and relative aperture of the optical system, but it is closely related to other image quality evaluation indicators such as the brightness of the center point and the optical transfer function. Can accurately reflect the performance of the entire optical system. In the detection of wave aberration of most lenses, many results are...

AI Technical Summary

Problems solved by technology

Due to the small field of view angle of the small field of view lens, its surface shape data is more easily affected by the adjustment accuracy of the lens relative to the detection instrument. Usually, manual judgment is made from the appearance of the surface shape interference fringes, and the results are highly random. The regular situation becomes complicated, and the operator’s experience is very high, which makes it difficult to accurately detect the wave aberration of the lens with a small field of view, and the detection efficiency is low, and the operability and repeatability are poor.

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