JPS567027A - Monitor for laser beam - Google Patents
Monitor for laser beamInfo
- Publication number
- JPS567027A JPS567027A JP8245479A JP8245479A JPS567027A JP S567027 A JPS567027 A JP S567027A JP 8245479 A JP8245479 A JP 8245479A JP 8245479 A JP8245479 A JP 8245479A JP S567027 A JPS567027 A JP S567027A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- laser beam
- photoelectric element
- ccd
- divided
- 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
- 230000001360 synchronised effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
PURPOSE:To prevent the use of a laser beam in its worsened state by applying a portion of a laser beam divided by a translucent mirror or the like to a photoelectric element such as a CCD in order to measure the luminance distribution, and comparing it with a reference luminance distribution through a given circuit to output a signal. CONSTITUTION:The laser beam from a laser 11 is divided by a dividing means 13 such as a translucent mirror, passed through a beam expander 16, and applied to a photoelectric element 15 such as a CCD. The signal from the photoelectric element 15, which is scanned by a clock driver 17, is entered into a comparator 19 through an amplifier 18, and compared with a given DC level. When the signal is larger than the DC level, a H signal is sent to a shift register 20, which, synchronized with the clock driver 17, adds the H signal to judge the worsening of the beam section, and signals, so that the use of a laser beam in its worsened state can be prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8245479A JPS567027A (en) | 1979-06-29 | 1979-06-29 | Monitor for laser beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8245479A JPS567027A (en) | 1979-06-29 | 1979-06-29 | Monitor for laser beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS567027A true JPS567027A (en) | 1981-01-24 |
| JPS6151727B2 JPS6151727B2 (en) | 1986-11-10 |
Family
ID=13774958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8245479A Granted JPS567027A (en) | 1979-06-29 | 1979-06-29 | Monitor for laser beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS567027A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109822A (en) * | 1981-12-23 | 1983-06-30 | Fujitsu Ltd | Detector for quantity of laser light |
| JPS6029862U (en) * | 1983-08-08 | 1985-02-28 | 株式会社椿本チエイン | Chain for multi-story parking system |
| FR2659753A1 (en) * | 1990-03-13 | 1991-09-20 | Commissariat Energie Atomique | DEVICE FOR CHARACTERIZING A LIGHT BEAM. |
-
1979
- 1979-06-29 JP JP8245479A patent/JPS567027A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109822A (en) * | 1981-12-23 | 1983-06-30 | Fujitsu Ltd | Detector for quantity of laser light |
| JPS6029862U (en) * | 1983-08-08 | 1985-02-28 | 株式会社椿本チエイン | Chain for multi-story parking system |
| FR2659753A1 (en) * | 1990-03-13 | 1991-09-20 | Commissariat Energie Atomique | DEVICE FOR CHARACTERIZING A LIGHT BEAM. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6151727B2 (en) | 1986-11-10 |
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