JPS6417014A - Light source device of endoscope - Google Patents
Light source device of endoscopeInfo
- Publication number
- JPS6417014A JPS6417014A JP62172829A JP17282987A JPS6417014A JP S6417014 A JPS6417014 A JP S6417014A JP 62172829 A JP62172829 A JP 62172829A JP 17282987 A JP17282987 A JP 17282987A JP S6417014 A JPS6417014 A JP S6417014A
- Authority
- JP
- Japan
- Prior art keywords
- rotating angle
- output light
- constant
- driving motor
- ktheta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
PURPOSE:To exactly and easily adjust the quantity of output light by changing the quantity I of the output light to Iproportional exp[Ktheta] with K as a constant with respect to the rotating angle theta of a driving motor by a means for adjusting the degree of aperture. CONSTITUTION:The means of adjusting the degree of aperture changes the quantity I of the output light nearly to Iproportional exp[Ktheta] with K as a constant with respect to the rotating angle theta of the driving motor. Since the quantity I of the output light changes like Iproportional exp[Ktheta] with respect to the rotating angle thetaof the driving motor, the change rate DELTAI/I of the quantity of the output light is KDELTAtheta when the change in the rotating angle is designated as DELTAtheta. The change rate is constant at any rotating angle if the rotating speed of the driving motor is assumed to be constant. The control of the quantity of light is thus satisfactorily executed without having an overshoot, hunting and response delay over the entire range of the rotating angle. The exact and easy control of the illumination intensity (brightness) to a subject is thereby executed.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62172829A JPS6417014A (en) | 1987-07-13 | 1987-07-13 | Light source device of endoscope |
US07/218,149 US4834071A (en) | 1987-07-13 | 1988-07-13 | Illuminance controller for light source and endoscope including the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62172829A JPS6417014A (en) | 1987-07-13 | 1987-07-13 | Light source device of endoscope |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6417014A true JPS6417014A (en) | 1989-01-20 |
Family
ID=15949128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62172829A Pending JPS6417014A (en) | 1987-07-13 | 1987-07-13 | Light source device of endoscope |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6417014A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02285317A (en) * | 1989-04-27 | 1990-11-22 | Fuji Photo Optical Co Ltd | Light source quantity adjusting device for endoscope |
JPH0369277A (en) * | 1989-08-08 | 1991-03-25 | Fujikura Ltd | Light source device |
US5319839A (en) * | 1991-12-16 | 1994-06-14 | Nifco Inc. | Board clamp |
-
1987
- 1987-07-13 JP JP62172829A patent/JPS6417014A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02285317A (en) * | 1989-04-27 | 1990-11-22 | Fuji Photo Optical Co Ltd | Light source quantity adjusting device for endoscope |
JPH0369277A (en) * | 1989-08-08 | 1991-03-25 | Fujikura Ltd | Light source device |
US5319839A (en) * | 1991-12-16 | 1994-06-14 | Nifco Inc. | Board clamp |
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