Image stabilizing optical system

Details Image stabilizing optical system Image stabilizing optical system

1974-06-18

1976-04-27

Rubin, David H.

G02B 2300

Patent

active

039531066

ABSTRACT:
A stabilized optical system consisting of an afocal front inverted Galileian telescopic system section and a relay rear lens system section, said telescopic system being designed to incorporate a plano-convex or plano-concave lens element of forward convexity or forward concavity as the rearmost lens element movable relative to the other lens elements. The rearmost lens element being held in fixed spatial alignment with an original line of sight axis by means of a substantially free gyro coupled thereto, while the remaining lens elements are secured in fixed relation to the housing of an instrument containing the optical system in coaxial alignment with the relay lens for jiggling about the center of curvature of the rearmost lens element. Thus accidental displacement or motion of the housing relative to the original line of sight axis can be exactly compensated to provide for stationary optical images inasmuch as the equation M = N - 1 is satisfied. M is the angular magnification power of the entire telescopic system including said image stabilizing rearmost lens element and N is the index of refraction of the rearmost lens element.

REFERENCES:
patent: 2959088 (1960-11-01), Rantsch
patent: 3378326 (1968-04-01), Alvarez
patent: 3531176 (1970-09-01), Humphrey
patent: 3781121 (1973-12-01), Gross

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