JPS5376780A - Laser protecting circuit - Google Patents
Laser protecting circuitInfo
- Publication number
- JPS5376780A JPS5376780A JP15303376A JP15303376A JPS5376780A JP S5376780 A JPS5376780 A JP S5376780A JP 15303376 A JP15303376 A JP 15303376A JP 15303376 A JP15303376 A JP 15303376A JP S5376780 A JPS5376780 A JP S5376780A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- protecting circuit
- laser protecting
- overcurrent
- degradation
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/06825—Protecting the laser, e.g. during switch-on/off, detection of malfunctioning or degradation
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE:To block flowing of overcurrent in a laser and prevent the degradation of the laser by controlling the reference voltage of an automatic output level control circuit APC of a light repeater only when a laser input signal is off.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15303376A JPS5937877B2 (en) | 1976-12-20 | 1976-12-20 | Laser protection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15303376A JPS5937877B2 (en) | 1976-12-20 | 1976-12-20 | Laser protection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5376780A true JPS5376780A (en) | 1978-07-07 |
JPS5937877B2 JPS5937877B2 (en) | 1984-09-12 |
Family
ID=15553490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15303376A Expired JPS5937877B2 (en) | 1976-12-20 | 1976-12-20 | Laser protection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5937877B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10341539B2 (en) | 2015-08-04 | 2019-07-02 | Samsung Electronics Co., Ltd. | Photographing apparatus module, user terminal including the same, and method of operating the user terminal |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0529102Y2 (en) * | 1989-04-17 | 1993-07-26 |
-
1976
- 1976-12-20 JP JP15303376A patent/JPS5937877B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10341539B2 (en) | 2015-08-04 | 2019-07-02 | Samsung Electronics Co., Ltd. | Photographing apparatus module, user terminal including the same, and method of operating the user terminal |
Also Published As
Publication number | Publication date |
---|---|
JPS5937877B2 (en) | 1984-09-12 |
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