Light source device for endoscope which is capable of light setting shading period
US6059722A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1997 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Oct 15, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/0655
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.