Apparatus for direct measurement of linear and angular...

Details Apparatus for direct measurement of linear and angular... Apparatus for direct measurement of linear and angular...

G - Physics

01

B

33/49, 88/0.14,

G01B 9/021 (2006.01) G01B 11/26 (2006.01) G01D 5/36 (2006.01) G01D 5/38 (2006.01)

Patent

CA 1056593

Abstract of the Disclosure The present invention relates to a apparatus for digitally reading out the linear or angular displacement of an object. A precise graticule is mounted on the object. A light source illuminates the graticule. Light from the graticule is fed through an optical enlarging system. The output of the enlarging system is fed through a striate diaphragm which is an identical optical enlargement of a portion of the graticule. Movement of the object and therefore the graticule produces light pulses at the output of the diaphragm. These light pulses are converted to electrical pulses which are exactly pro- portional to the displacement of the object.

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