JPS6239691B2 - - Google Patents
Info
- Publication number
- JPS6239691B2 JPS6239691B2 JP3872980A JP3872980A JPS6239691B2 JP S6239691 B2 JPS6239691 B2 JP S6239691B2 JP 3872980 A JP3872980 A JP 3872980A JP 3872980 A JP3872980 A JP 3872980A JP S6239691 B2 JPS6239691 B2 JP S6239691B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- photodetector
- peak value
- laser
- divider
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 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)
- Measurement Of Radiation (AREA)
- Lasers (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3872980A JPS56133627A (en) | 1980-03-25 | 1980-03-25 | Measuring device for beam diameter of laser beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3872980A JPS56133627A (en) | 1980-03-25 | 1980-03-25 | Measuring device for beam diameter of laser beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56133627A JPS56133627A (en) | 1981-10-19 |
| JPS6239691B2 true JPS6239691B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-08-25 |
Family
ID=12533411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3872980A Granted JPS56133627A (en) | 1980-03-25 | 1980-03-25 | Measuring device for beam diameter of laser beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56133627A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63142222A (ja) * | 1986-12-05 | 1988-06-14 | Nec Corp | レ−ザビ−ム径測定装置 |
-
1980
- 1980-03-25 JP JP3872980A patent/JPS56133627A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56133627A (en) | 1981-10-19 |