A Mechanical Structure of a Refracted Optical System

Abstract

The invention belongs to the field of optical precision apparatuses and relates to a mechanical structure for a reflex optical path optical system. The structure comprises a reflex mirror rack, a pre-posed mirror group, a post-posed mirror group and a plane reflecting mirror group, wherein the reflex mirror rack comprises a vertical mirror barrel and a horizontal mirror barrel, the plane reflecting mirror group is mounted at an intersection of the vertical mirror barrel and the horizontal mirror barrel, the pre-posed mirror group is mounted in the vertical mirror barrel, the post-posed mirror group is mounted in the horizontal mirror barrel, a connection mirror barrel is mounted in the vertical mirror barrel or the horizontal mirror barrel, the plane reflecting mirror group is fixed on the reflex mirror rack via a back pull mode, plane reflecting mirrors are bonded onto each other via bonding columns, the plane reflecting mirrors and bonding glue of the bonding columns are filled with hollow glass microbeads, the mechanical structure can help ensure high adjustment precision of coaxiality of the pre-posed mirror group or the post-posed mirror group, and the plane reflecting mirrors can be prevented from problems of mirror surface change.

Description

technical field [0001] The invention belongs to the field of optical precision instruments, and relates to a mechanical structure of a deflected light path optical system. Background technique [0002] In the design of optical instruments, according to the needs of the actual optical path, the position and direction of the optical axis of the system are often changed through the plane mirror. The adjustment of the attitude of the plane mirror is an important link in the adjustment of the optical system, and it is also a difficult point. [0003] In the past, the structural design idea of ​​the refraction optical path was to assemble the front mirror group and the rear mirror that have been optically centered and processed into the refraction mirror frame and not adjust it. The front and rear optical groups are coaxial through the adjustment of the plane mirror. This design idea It is feasible when the machining accuracy of the folding mirror frame is high, and the pose accu...

AI Technical Summary

Problems solved by technology

[0003] In the past, the structural design idea of ​​the refraction optical path was to assemble the front mirror group and the rear mirror assembly that have been optically centered into the refraction mirror frame and not adjust it. The front and rear optical groups are coaxial through the adjustment of the plane mirror. This design idea It is feasible when the machining accuracy of the folding mirror frame is high, and the pose accuracy of the front and rear optical groups is low, but it is difficult to guarantee the coaxial accuracy of the front and rear optical groups.

In addition, the plane mirror is used as an adjustment link, and the stress generated during the adjustment process often causes changes in the shape of the plane mirror, which will eventually lead to the deterioration of the wavefront of the system

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