Variable field of view, variable magnification lens assembly for

Details Variable field of view, variable magnification lens assembly for Variable field of view, variable magnification lens assembly for

1975-05-19

1977-07-26

Evans, F. L.

350238, 350247, G02B 2702

Patent

active

040379396

ABSTRACT:
A miniature image viewer having a variable field of view, variable magnification lens assembly is disclosed. The assembly is scannable over the surface of the image to view successive portions which have information not normally discernable to the human eye. The assembly may comprise a zoom lens system or two or more independent lenses, at least one of which is moveable in and out of the field of view of the other.

REFERENCES:
patent: 1993589 (1935-03-01), Borden
patent: 2410722 (1946-11-01), Eckert
patent: 2548488 (1951-04-01), Mella
patent: 2657487 (1953-11-01), Sprung
patent: 3543424 (1970-12-01), Klein
patent: 3805429 (1974-04-01), Thompson

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