Method of optically measuring relative angular movement

Details Method of optically measuring relative angular movement Method of optically measuring relative angular movement

1988-07-12

1989-09-26

Scott, Jr., Leon

Optics: measuring and testing

Angle measuring or angular axial alignment

Alignment of axes nominally coaxial

356138, G01B 1126

Patent

active

048695912

ABSTRACT:
Relative angular movement between two linear members is detected by shining light from a light source (11) through a triangular mask (12) in one member onto a mirror (10) in the other member and reflecting the image of the triangular mask onto a linear array of detectors (15). Movement between the two members causes different detectors in the array to be illuminated and the position and number of detectors illuminated determines the X and Y axis of movement to enable the relative angular movement of the two members to be calculated.

REFERENCES:
patent: 4113388 (1978-09-01), Gates et al.
patent: 4264010 (1988-08-01), Bachmann et al.

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