Title:
ELECTRONIC ENDOSCOPE EQUIPMENT WITH A PLURALITY OF LIGHT SOURCES
Document Type and Number:
Japanese Patent JP3317744
Kind Code:
B2
Abstract:
PURPOSE: To facilitate selecting a xenon lamp or a halogen lamp and to enable effective utilization of light sources while controlling a rise in temperature of a front-end portion of an electronic endoscope.
CONSTITUTION: Due to the rotation of a rotating board 24, the switching and selection of a halogen lamp 25 or a xenon lamp 31 can be made, and when the xenon lamp 31 is selected, a diaphragm 21 is switched to, e.g. between two values of diaphragm A1 and A2 and driven. For example, when the shutter speed at the diaphragm value A1 is slower than 1/60 sec., it is switched to the diaphragm value A2, and when the shutter speed at the diaphragm value A2 is faster than 1/200, it is switched to the diaphragm value A1. On the other hand, when the halogen lamp 25 is selected, the diaphragm 21 is driven to an open value to enable supplying the lamp light constantly by the maximum opening amount.
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Inventors:
Shigeo Suzuki
Fujio Okada
Fujio Okada
Application Number:
JP14280793A
Publication Date:
August 26, 2002
Filing Date:
May 21, 1993
Export Citation:
Assignee:
Fuji Photo Optical Co., Ltd.
International Classes:
A61B1/04; A61B1/06; G02B23/24; (IPC1-7): A61B1/06; A61B1/04; G02B23/24
Domestic Patent References:
| JP4911345A | ||||
| JP5862613A | ||||
| JP5894829A |
Attorney, Agent or Firm:
Yasuhito Ogata