Light source device for endoscope which is capable of light sett

Details Light source device for endoscope which is capable of light sett Light source device for endoscope which is capable of light sett

1997-10-15

2000-05-09

Leubecker, John P.

Surgery

Endoscope

Having imaging and illumination means

348 68, A61B 106

Patent

active

060597224

ABSTRACT:
A light source device for an endoscope is capable of selecting a reading method between a method utilizing a light shading period and a method doing without a light shading period. It is possible to adopt both the new reading method and the conventional reading method. A rotary shutter is composed of, for example, a disk with a light passing portion for securing a light source path and a light shading portion formed on the outer peripheral portion, and a DC motor rotates and stops the rotary shutter. When the electronic endoscope apparatus to which the light source device is applied is of an all-pixels reading type, the rotation mode in which light is output during a predetermined light shading period at intervals of 1/30 sec is set. When the light source device is applied to a conventional electronic endoscope apparatus, for example, of a pixel mixture signal reading type system, the stop mode in which the illuminating light is not shaded is set. The reading system adopted by the electronic endoscope apparatus is judged by an ID discriminator, and the rotary shutter is stopped at a predetermined position by a stop controller in the stop mode.

REFERENCES:
patent: 3525332 (1970-08-01), Kosaka
patent: 4710807 (1987-12-01), Chikama
patent: 4924856 (1990-05-01), Noguchi
patent: 5007408 (1991-04-01), Ieoka

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