A measuring and adjusting device for dihedral angle error of corner cube prism

Abstract

The invention discloses a measuring and adjusting device for the dihedral angle error of a corner cube prism, which comprises a rotating wheel, a rotating pressure ring, a movable bracket, a fixed bracket, a driving mechanism, a reset tension spring and a fixed cylinder for placing the corner cube prism; the rotating wheel The left end of the disc is provided with an internal thread, and the left end of the rotating pressure ring is provided with an external thread; the right end of the fixed cylinder is provided with an external thread to cooperate with the internal thread at the left end of the rotating wheel; the right end of the rotating wheel is provided with an internal thread and the external thread at the left end of the rotating pressure ring. The rotating wheel includes a rotating part and a connecting part. The rotating part is located on the left side of the connecting part. The internal thread at the right end of the rotating wheel is located at the connecting part. All the movable brackets are clearance fit. The invention provides a simple structure, convenient installation, easy disassembly, pitch adjustment, rotation and alignment of the optical path of the corner cone prism dihedral angle error measurement and adjustment device.

Description

technical field [0001] The invention relates to an optical measuring fixture, in particular to a measuring and adjusting device for the angle error of two sides of a corner cube prism. Background technique [0002] The corner cube is a high-precision optical element, which is widely used as a cooperative target for photoelectric ranging, which greatly improves the measuring range of the instrument. The optical principle of the corner cube prism is: a bundle of parallel rays entering the pyramid will be divided into six beams of light with different reflection orders after being reflected by three right-angled surfaces. As long as the corner cube prism is ideal, the six rays All beams of light will be strictly parallel and opposite to the original incident light, that is, the reflected light will return along the original incident light path. The so-called "ideal" corner cube here, except that the material must be uniform and isotropic, the surface shape of the right-angled ...

AI Technical Summary

Problems solved by technology

[0003] In order to accurately measure the dihedral angle error of the corner cube, the "CoreCube.app" software in the ZYGO laser interferometer is currently used for measurement. It is not aligned with the edge of the fixed "sexect Mask" on the "CoreCube.app" software. It is often necessary to manually adjust the orientation of the rotating corner cube. Multiple adjustments and rotations waste measurement time, and the alignment accuracy is not high, which affects the measurement accuracy.

[0004] The corner cube has the characteristics of small shape and no damage to the edges and corners. At present, when measuring the two-sided angle error of the corner cube, it is generally used to clamp the naked mirror with three claws, which is not easy to rotate and adjust, and it is easy to damage the corner cube.

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