Method for adjusting off-axis parabolic mirror system by common focus of lens

Abstract

The invention relates to a method for adjusting off-axis parabolic mirror system by common focus of a lens. The method comprises the following steps of S1, adjusting a pitching angle of an off-axis parabolic mirror by two beams of parallel laser with equal height so that emergent light of the off-axis parabolic mirror is equal in height; S2, employing a plane mirror to substitute the off-axis parabolic mirror, allowing the two beams of parallel laser with equal height to pass through the plane mirror, simulating an optical beam propagation line of the off-axis parabolic mirror needed to be adjusted, and forming an optical loop; and S3, adding the lens into the optical loop, moving the off-axis parabolic mirror by a lens common-focus alignment method, and replacing the plane mirror with theoff-axis parabolic mirror. Compared with the prior art, the method has the advantages that the problem that the off-axis parabolic mirror is difficult to adjust during the actual light path adjustment is solved, a conventional off-axis parabolic mirror adjustment method is effectively substituted, the method has relatively high accuracy and practicability, and the adjustment time and the adjustment difficulty can be greatly reduced.

Description

technical field [0001] The invention relates to an adjustment method of an off-axis parabolic mirror system, in particular to a method for adjusting the off-axis parabolic mirror system by using the confocal point of a lens. Background technique [0002] As early as the 17th century, parabolic mirrors began to be used in reflecting telescope systems. Both theory and practical application reflect that the reasonable use of parabolic mirrors is of great help to the improvement of equipment performance. The parabolic mirror has the characteristics of no spherical aberration for the imaging of the target at infinity, which solves the problem that the monochromatic conical beam emitted from a certain object point on the main axis to the optical system may be on the ideal image plane on the main axis after being refracted by the optical series At the place, the optical error problem of forming a diffuse spot (commonly known as the circle of confusion), but there are problems of c...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for adjusting the off-axis parabolic mirror system by using the lens confocal point in order to overcome the defects of the above-mentioned prior art, solve the problem of difficult adjustment of the off-axis parabolic mirror in the actual optical path adjustment process, and effectively replace the common The off-axis parabolic mirror adjustment method has high accuracy and feasibility, and can greatly reduce the time and difficulty of adjustment

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