Illuminating optical system for high magnification endoscopes

Details Illuminating optical system for high magnification endoscopes Illuminating optical system for high magnification endoscopes

1985-03-28

1987-01-27

Yeung, James C.

Illumination

Revolving

350 9626, 128 6, F21V 704

Patent

active

046398376

ABSTRACT:
An illuminating optical system for high magnification endoscopes wherein, in order that a sufficient light amount may be secured and no flare light may enter an observing system, a light guide is annularly arranged as tapered around the observing optical system so that the optical axis of a light emitted from the light guide may intersect the optical axis of the observing optical system at an object point and a cover glass is provided with a stop.

REFERENCES:
patent: 4354734 (1982-10-01), Nakahashi
patent: 4403273 (1983-09-01), Nishioka
patent: 4500181 (1985-02-01), Takahashi

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