A Method of Adjusting Off-Axis Parabolic Mirror System Using Lens Confocal Point

Abstract

The invention relates to a method for adjusting an off-axis parabolic mirror system by using lens confocal points, including the following process: S1, using two parallel laser beams with equal heights to adjust the pitch angle of the off-axis parabolic mirror, so that the height of the outgoing light of the off-axis parabolic mirror equal; S2, use a plane mirror instead of an off-axis parabolic mirror, let two parallel laser beams with equal heights pass through the plane mirror, simulate the beam propagation route of the off-axis parabolic mirror system that needs to be adjusted, and form an optical circuit; S3, add The lens, using the lens confocal alignment method, moves the off-axis parabolic mirror, and replaces the flat mirror with an off-axis parabolic mirror. Compared with the prior art, the present invention solves the problem of difficult adjustment of the off-axis parabolic mirror in the actual optical path adjustment process, effectively replaces the common off-axis parabolic mirror adjustment method, has high accuracy and feasibility, and can greatly reduce Adjustment time and difficulty.

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...

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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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