Laser interferometer system for straightness measurements

Details Laser interferometer system for straightness measurements Laser interferometer system for straightness measurements

1996-08-19

1998-05-26

Font, Frank G.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356361, G01B 902

Patent

active

057574910

ABSTRACT:
A laser interferometer system in particular for measuring the straightness of an object is described. This interferometer employs triangular prisms to refract the laser beams by certain angles with respect to the principal axis of the incident beam. Two configurations are described. One is for high accuracy in short range measurements, the other can handle long range measurements with high resolution that is not related to the range. For the latter the interferometer comprises a laser source, a beam splitter, a plane reflector, two first triangular prisms, a second prism, a right angle prism reflector and a detector system. The second prism and the right-angle prism reflector are integrated into one body to form a movable component and are attached to the object to be measured.

REFERENCES:
patent: 3409375 (1968-11-01), Hubbard
patent: 3790284 (1974-02-01), Baldwin
patent: 4787747 (1988-11-01), Sommargren et al.
patent: 5026163 (1991-06-01), McMurtry et al.
patent: 5337145 (1994-08-01), Chaney
patent: 5521704 (1996-05-01), Thiel et al.
patent: 5585922 (1996-12-01), Sueyoshi

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