Compact multiple field-of-view attachment

Details Compact multiple field-of-view attachment Compact multiple field-of-view attachment

1995-06-05

1996-06-18

Epps, Georgia Y.

Optical: systems and elements

Compound lens system

Microscope

359673, G02B 2100, G02B 1502

Patent

active

055284167

ABSTRACT:
An afocal field of view and focal length converter for an optical lens system includes a cube-shaped frame that is interposed on an optical axis of the lens system. Lenses are mounted in four faces of the frame to provide two reversible afocal pairs and two faces are left empty. The frame is rotatable about a first axis to position the afocal pairs in the optical axis for one of four conversion positions, and about a second axis, perpendicular to the first axis, to rotate the empty faces in the optical axis for a no conversion position.

REFERENCES:
patent: 2552940 (1951-05-01), Cornut
patent: 2791937 (1957-05-01), Leitz
patent: 2901942 (1959-09-01), Tackaberry
patent: 3813172 (1974-05-01), Walker
patent: 3881804 (1975-05-01), Ikeda
patent: 4017148 (1977-04-01), Taylor
patent: 4195903 (1980-04-01), Kawase et al.
patent: 4262989 (1981-04-01), Waters
patent: 4530578 (1985-07-01), Kato

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