Light source apparatus for endoscope

Details Light source apparatus for endoscope Light source apparatus for endoscope

1994-07-27

1996-01-30

Dzierzynski, Paul M.

Optical: systems and elements

Compound lens system

Microscope

600160, G02B 2106, A61B 106

Patent

active

054885094

ABSTRACT:
A light source apparatus for an endoscope having a light source for emitting a bundle of illuminating light rays which are to be supplied to a light guide of the endoscope. The apparatus includes at least a pair of light-blocking plates disposed in the bundle of illuminating light rays to face each other across the optical axis of the ray bundle, and a device for supporting the light-blocking plates such that the plates are rotatable about an axis extending therebetween at right angles to the optical axis. At least one of the light-blocking plates has such a cross-sectional configuration as viewed in the optical axis direction that the light-blocking plate is bent at an angle to the axis of rotation near the center of the illuminating optical path.

REFERENCES:
patent: 4322129 (1982-03-01), Takahashi et al.
patent: 5016975 (1991-05-01), Sasaki et al.
patent: 5042915 (1991-08-01), Akutsu et al.
patent: 5237403 (1993-08-01), Sugimoto et al.
patent: 5277172 (1994-01-01), Sugimoto
English language abstract of Japanese Publication No. 1-200217.

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