Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1977-08-15
1979-10-09
Corbin, John K.
Optics: measuring and testing
Range or remote distance finding
With photodetection
350174, 356138, G02B 2714, G01C 100
Patent
active
041704010
ABSTRACT:
A passive compensating device which compensates for angular and translational misalignment errors in a polarized beam and assures the projected beam centroid remains at the same position. The device splits the incoming beam into two beams. Thereafter, optical orienting means disposed to intercept the two beams is operative to rotate the wavefront of both beams so that the composite beam exiting a combiner has two components wherein one component has its wavefront rotated 180.degree. about two orthogonal axes with respect to the other beam. Accordingly, the composite beam centroid is maintained at one position regardless of jitter of the beam entering the compensator device.
REFERENCES:
patent: 1687030 (1928-10-01), Mitchell
patent: 3389632 (1968-06-01), Plummer
patent: 3528748 (1970-09-01), Burch et al.
NPL, "Laser Alignment Device," National Physical Lab., Teddington, Middlesex, England, Brochure, 1969.
Jacobs, D. H., "Fundamentals of Optical Engineering," McGraw-Hill, 1943, pp. 152-165.
Crane, Jr. Robert
Schlesinger Eugene R.
Yoder, Jr. Paul R.
Corbin John K.
Giarratana Salvatore A.
Grimes Edwin T.
Masselle Francis L.
Punter Wm. H.
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