JPS6446719A - Xenon lamp lighting device - Google Patents
Xenon lamp lighting deviceInfo
- Publication number
- JPS6446719A JPS6446719A JP63189455A JP18945588A JPS6446719A JP S6446719 A JPS6446719 A JP S6446719A JP 63189455 A JP63189455 A JP 63189455A JP 18945588 A JP18945588 A JP 18945588A JP S6446719 A JPS6446719 A JP S6446719A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- switching
- synchronizing
- circuit
- power consumption
- 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.)
- Granted
Links
- 229910052724 xenon Inorganic materials 0.000 title abstract 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 title abstract 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Landscapes
- Endoscopes (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
PURPOSE:To curtail useless power consumption by lowering an output constant- current value of a switching regulator, and decreasing the light emission quantity of a xenon short arc lamp, in a period in which an optical path of the xenon short arc lamp is shielded. CONSTITUTION:Synchronizing pulses of R, G and B are inputted to a color signal synchronizing circuit 22 from a synchronizing pulse input terminal 20 and synchronized. Subsequently, the output signal of the color signal synchronizing circuit 22 is supplied to a pulse generating circuit 24, and a pulse corresponding to the light quantity required for an image pickup of each color component is generated. This pulse is supplied to a switching circuit 16 in a switching regulator 14. The light emission quantity of a xenon short arc lamp 10 depends on pulse width of a switching pulse and a switching frequency of the inside of the switching circuit 16, therefore, by controlling them in accordance with the synchronizing pulse the light emission quantity can be controlled in accordance with the light quantity required. In such a way, the power consumption of the lamp can be varied in accordance with the light quantity required, and a useless power consumption can be curtailed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63189455A JPH0679109B2 (en) | 1988-07-28 | 1988-07-28 | Light source for electronic scope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63189455A JPH0679109B2 (en) | 1988-07-28 | 1988-07-28 | Light source for electronic scope |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6446719A true JPS6446719A (en) | 1989-02-21 |
JPH0679109B2 JPH0679109B2 (en) | 1994-10-05 |
Family
ID=16241545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63189455A Expired - Lifetime JPH0679109B2 (en) | 1988-07-28 | 1988-07-28 | Light source for electronic scope |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0679109B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013153919A (en) * | 2012-01-30 | 2013-08-15 | Hoya Corp | Endoscope system and light source device for endoscope |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56145696A (en) * | 1980-04-14 | 1981-11-12 | Hitakon Shiyashin Youhin Hanba | Power source for flashing light emitting device |
JPS5826637A (en) * | 1981-08-06 | 1983-02-17 | Iseki & Co Ltd | Hydraulic stepless speed change gear |
JPS6120324A (en) * | 1984-07-07 | 1986-01-29 | Ushio Inc | Method for exposing material of semiconductor wafer by mercury lamp |
-
1988
- 1988-07-28 JP JP63189455A patent/JPH0679109B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56145696A (en) * | 1980-04-14 | 1981-11-12 | Hitakon Shiyashin Youhin Hanba | Power source for flashing light emitting device |
JPS5826637A (en) * | 1981-08-06 | 1983-02-17 | Iseki & Co Ltd | Hydraulic stepless speed change gear |
JPS6120324A (en) * | 1984-07-07 | 1986-01-29 | Ushio Inc | Method for exposing material of semiconductor wafer by mercury lamp |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013153919A (en) * | 2012-01-30 | 2013-08-15 | Hoya Corp | Endoscope system and light source device for endoscope |
Also Published As
Publication number | Publication date |
---|---|
JPH0679109B2 (en) | 1994-10-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |