Aspheric surface profile measuring device and method based on most proximate circle theory

Abstract

The invention discloses an aspheric surface profile measuring device and method based on the most proximate circle theory. The measuring device comprises an L-shaped bed body, the outer side f the vertical portion of the bed body is connected with a torque motor through a flange, a rotary shaft of the torque motor penetrates through the vertical portion of the bed body and is connected with a rotary support, the rotary support is closely attached to the lower half portion of the inner side of the vertical portion of the bed body, a rotary hand wheel is disposed on the top of the rotary support, a transverse T-shaped Z-direction moving support is connected with a sliding rail on the side face of the rotary support, a sliding rail on the top plane of the Z-direction moving support is connected with a Y-direction moving platform, a sliding rail on the top plane of the Y-direction moving platform is connected with an X-direction moving platform, a workpiece fixing table is fixedly arranged on the upper surface of the X-direction moving platform, and a to-be-measured element placement platform is arranged on the upper surface of the workpiece fixing table. The problem that in the prior art, aspheric surface optical parts are difficult to detect is solved.

Description

technical field [0001] The invention belongs to the technical field of optical manufacturing and detection, and relates to an aspheric surface shape detection device and method based on the closest circle theory. Background technique [0002] In optical systems, aspheric elements have incomparable advantages over spherical elements. The use of aspheric elements can not only correct the aberration of the optical system and reduce the loss of light energy, but also obtain high-quality image effects and high-quality optical characteristics. Simplify system structure, reduce system weight and other advantages. Therefore, the processing of aspheric surfaces has attracted more and more attention. At present, experts and scholars at home and abroad have carried out in-depth research on the processing of aspheric surfaces, and have proposed a variety of methods, from the traditional manual processing method to the trajectory forming mechanical processing method proposed in the 20t...

AI Technical Summary

Problems solved by technology

[0005] In order to achieve the above purpose, the present invention provides an aspheric surface shape detection device and method based on the closest circle theory, which solves the problem of difficult detection of aspheric optical parts in the prior art

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