An assembly and adjustment method of an off-axis parabolic mirror group

Abstract

The invention relates to an assembly and adjustment method of an off-axis parabolic mirror group, which belongs to the technical field of assembly and adjustment methods. It solves the problem that the installation and adjustment methods in the prior art are generally aimed at the installation and adjustment of a single off-axis parabolic mirror. In the adjustment method of the present invention, a plane reflecting mirror is added on the back of the off-axis parabolic mirror as the back mirror, the pitch angle and azimuth angle of the off-axis parabolic mirror are monitored by aligning the back mirror with a Leica theodolite, and the precise measuring prism is used as the box body and each The horizontal reference of the off-axis parabolic mirror uses an interferometer to emit a beam of parallel incident light. On the one hand, by adjusting the thickness and position of the spacer of the off-axis parabolic mirror, the brightest and clearest image of the optical camera is found, and the off-axis parabolic mirror is fixed. On the one hand, the adjustment of the off-axis parabolic mirror is completed by observing the self-collimating interference image. The assembling method has high assembling accuracy.

Description

technical field [0001] The invention belongs to the technical field of assembly and adjustment methods, and in particular relates to an assembly and adjustment method of an off-axis parabolic mirror group. Background technique [0002] Off-axis parabolic mirrors can generate high-quality parallel beams without central occlusion with a simple surface shape, which can effectively improve the imaging quality of the optical system and simplify the optical system. Using multiple off-axis parabolic mirrors to form an off-axis parabolic mirror group can achieve high system efficiency. The demand for precision miniaturization. Since the off-axis parabolic mirror is not a rotationally symmetrical surface, compared with the ordinary spherical mirror, the off-axis parabolic mirror also needs to consider its own rotation vector. For the assembly and adjustment of multi-off-axis parabolic mirror groups, there are extremely high requirements for the construction of the overall optical sy...

AI Technical Summary

Problems solved by technology

However, the method of using the gravity method to determine the symmetry axis of the off-axis parabolic mirror is difficult to achieve high-precision standard adjustment, and the systematic error of the experiment cannot be eliminated even with multiple measurements

And in the prior art, there is no relevant report on the assembly and adjustment of off-axis parabolic mirrors by using the above method

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