Patent
Optical fiber point diffraction interference apparatus and method for transient three-coordinate measurement
TLDR
In this paper, an optical fiber point diffraction interference apparatus for transient three-coordinate measurement is presented, which consists of a light source, which is configured to provide initial incident light to an optical path adjustment module; the optical path adjusting module, which divides the incident light into a plurality of beams of polarized light; adigital polarized camera, which receives emitted light and acquire a desired interference image; and a computer, connected with the digital polarized camera and is configuredto process the image information.Abstract:
The present invention discloses an optical fiber point diffraction interference apparatus for transient three-coordinate measurement. The apparatus comprises: a light source, which is configured to provide initial incident light to an optical path adjustment module; the optical path adjustment module, which is configured to divide the incident light into a plurality of beams of polarized light; adigital polarized camera, which is configured to receive emitted light and acquire a desired interference image; and a computer, which is connected with the digital polarized camera and is configuredto process the image information. The substantial effects of the technical scheme of the present invention comprise that: a polarized digital camera is used to acquire circularly polarized light of p-polarized light and s-polarized light with opposite rotation directions obtained by a quarter-wave plate whose fast axis direction has an angle of 45 DEG with the X-axis, two beams of the polarized light with opposite rotation directions are interfered by the polarization plate array in the front of the polarized digital camera, and as the polarization plate rotates in the light transmission axisdirection, the phase of the interference fringe changes, so that the micro-displacement is realized without the requirement of the PZT, the complexity of detecting the system components is reduced, and the anti-interference ability of the point diffraction interference system is improved.read more
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