Variable field optical system for endoscopes

Details Variable field optical system for endoscopes Variable field optical system for endoscopes

1977-12-05

1979-02-20

Henry, Jon W.

G02B 2302

Patent

active

041403649

ABSTRACT:
A variable field optical system for endoscopes comprising an image guide, objective, fixed prism and rotatable prism and enabling to observe over a wide range by varying the field by rotating said rotatable prism.

REFERENCES:
patent: 1530081 (1925-03-01), Humbrecht et al.
patent: 2817994 (1957-12-01), Ehrenhaft et al.
patent: 3856000 (1974-12-01), Chikama
patent: 3918072 (1975-11-01), Imai et al.

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