KR950012826A - Abnormality detection device of laser diode and method - Google Patents
Abnormality detection device of laser diode and method Download PDFInfo
- Publication number
- KR950012826A KR950012826A KR1019930022441A KR930022441A KR950012826A KR 950012826 A KR950012826 A KR 950012826A KR 1019930022441 A KR1019930022441 A KR 1019930022441A KR 930022441 A KR930022441 A KR 930022441A KR 950012826 A KR950012826 A KR 950012826A
- Authority
- KR
- South Korea
- Prior art keywords
- laser diode
- abnormality
- control signal
- signal output
- detect
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Semiconductor Lasers (AREA)
Abstract
본 발명은 레이저 다이오드의 이상 유무를 검지하여 중앙 처리 장치에서 알려주는 레이저 다이오드의 이상 유무를 확인함에 있어서, 레이저 다이오드 제어 신호와 레이저 다이오드 양단의 전압 변화를 검출하여 레이저 다이오드의 이상 검지장치 및 그 방법에 관한 것으로, 종래에는 레이저 다이오드 이상유무를 자동으로 검지할 수 있도록 한 레이저 다이오드의 이상 유무를 검지하기 위하여 레이저 다이오드 주변에 별도의 광 검지 장치를 설치하여, 레이저 다이오드에서 발광되는 광량을 직접 검지하는 방법을 사용함으로써, 장치의 구성이 복잡해지고, 이로인해 제품 구성시 생산원가가 상승되는 문제점이 있었다.The present invention detects the abnormality of the laser diode and detects the abnormality of the laser diode to inform the central processing unit, the laser diode control signal and the voltage detection across the laser diode to detect the abnormality of the laser diode and its method In the related art, in order to detect the abnormality of the laser diode which can automatically detect the abnormality of the laser diode, a separate optical detection device is installed around the laser diode to detect the amount of light emitted from the laser diode. By using the method, the configuration of the device is complicated, which leads to a problem in that the production cost is increased during the product configuration.
본 발명은 이와같은 종래의 문제점을 감안하여, 레이저 다이오드의 이상 유무를 확인함에 있어서 별도의 광검지 장치를 사용하지 않고, 레이저 다이오드가 온 될때 레이저 다이오드 양단에 유기되는 전압을 검출하여, 검출된 신호와 레이저 다이오드를 구동 시키는 레이저 다이오드 제어신호와 비교함으로써, 레이저 다이오드의 이상 유무를 검지할 수 있도록 한 것이다.In view of such a conventional problem, the present invention does not use a separate photodetector in checking whether a laser diode is abnormal, and detects a voltage induced across the laser diode when the laser diode is turned on, thereby detecting the detected signal. By comparing with the laser diode control signal for driving the laser diode, it is possible to detect the abnormality of the laser diode.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명 레이저 다이오드의 이상 검지 장치 구성도.1 is a block diagram of the abnormality detection device of the laser diode of the present invention.
제2도는 (가) 내지 (라)는 제1도의 레이저 다이오드에 대한 정상 동작시 타이밍도.2 is a timing chart in normal operation of the laser diode of FIG.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930022441A KR970003523B1 (en) | 1993-10-27 | 1993-10-27 | Method and apparatus for detecting the defect of laser diode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930022441A KR970003523B1 (en) | 1993-10-27 | 1993-10-27 | Method and apparatus for detecting the defect of laser diode |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950012826A true KR950012826A (en) | 1995-05-17 |
KR970003523B1 KR970003523B1 (en) | 1997-03-18 |
Family
ID=19366677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930022441A KR970003523B1 (en) | 1993-10-27 | 1993-10-27 | Method and apparatus for detecting the defect of laser diode |
Country Status (1)
Country | Link |
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KR (1) | KR970003523B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100562422B1 (en) * | 2004-08-13 | 2006-03-23 | 주식회사 이오테크닉스 | Laser trouble preventing method and its preventing apparatus |
KR20200058831A (en) * | 2018-11-20 | 2020-05-28 | 현대오트론 주식회사 | LIDAR apparatus |
-
1993
- 1993-10-27 KR KR1019930022441A patent/KR970003523B1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100562422B1 (en) * | 2004-08-13 | 2006-03-23 | 주식회사 이오테크닉스 | Laser trouble preventing method and its preventing apparatus |
KR20200058831A (en) * | 2018-11-20 | 2020-05-28 | 현대오트론 주식회사 | LIDAR apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR970003523B1 (en) | 1997-03-18 |
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