Illumination optical system

Details Illumination optical system Illumination optical system

1998-07-29

2000-04-25

Leubecker, John P.

Surgery

Endoscope

Having imaging and illumination means

600182, 359619, A61B 107

Patent

active

060538627

ABSTRACT:
An illumination optical system has a diffusion member including a number of nearly spherical members which are diminutive in size and transparent and a transparent medium whose refractive index is higher than that of air and different from that of the nearly spherical members and which holds the nearly spherical members, on the exit end face of a light conducting device for introducing illumination light. In this way, a visual field can be efficiently illuminated.

REFERENCES:
patent: 4802460 (1989-02-01), Ohkuwa
patent: 5282088 (1994-01-01), Davidson
patent: 5307205 (1994-04-01), Ludwig, Jr. et al.
patent: 5354322 (1994-10-01), Miyano
patent: 5384467 (1995-01-01), Plimon
patent: 5837346 (1998-11-01), Langille et al.

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