Arrangement for optical path length variation

Details Arrangement for optical path length variation Arrangement for optical path length variation

1981-10-16

1985-10-15

Corbin, John K.

350626, 350486, 350569, G02B 508, G02B 510

Patent

active

045470413

ABSTRACT:
The invention relates to an arrangement for varying the optical path length in an optical device without varying its overall dimensions comprising an entrance reflector and an exit reflector the planes of incidence of which are substantially arranged in one plane and the normals erected upon said planes are unidirectional, and an even number of deviating reflectors located between said entrance reflector and said exit reflector. The variation of the optical path length is realized by displacing the entrance reflector and the exit reflector uniformly in any, however, the same direction. A combination of individual arrangements is feasible.

REFERENCES:
patent: 2725800 (1955-12-01), Dewhurst
patent: 3642343 (1972-02-01), Tchejeyan et al.
patent: 3871750 (1975-03-01), Mecklenborg
patent: 3947188 (1976-03-01), Simpson
Wiley, J. P. "Constant Path Length Optical Scanner," IBM Technical Disclosure Bull., vol. 15, No. 4, (Sep. 1972), p. 1291.

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