JPS5757222A - Power measurment mechanism of optical fiber for laser power transmission - Google Patents
Power measurment mechanism of optical fiber for laser power transmissionInfo
- Publication number
- JPS5757222A JPS5757222A JP13166480A JP13166480A JPS5757222A JP S5757222 A JPS5757222 A JP S5757222A JP 13166480 A JP13166480 A JP 13166480A JP 13166480 A JP13166480 A JP 13166480A JP S5757222 A JPS5757222 A JP S5757222A
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- fiber
- reflected
- laser
- incidence
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
PURPOSE:To make it possible to accurately measure the laser power at the emitting end of a laser power transmitting optical fiber, by measuring the laser beam part reflected from the emitting end of the fiber by means of a sensing means disposed in the vicinity of an incidence end of the fiber. CONSTITUTION:A laser beam source 1 produces a laser beam 2 which is introduced through a focussing lens 3 into the incidence end 4a of a transmitting fiber 4 and is transmitted through the latter so as to be emitted from the emitting end 4b of the same. A part of the laser beam is inevitably reflected at the emitting end 4b and runs in the reverse direction through the fiber 4 so as to be emitted from the incidence end 4a as a beam 6. This beam 6 is made to pass through the lens 3 and is reflected by a perforated mirror 7 (or a half mirror) which is disposed so as not to intercept the incidence laser beam 2. The reflected beam is then transmitted to a display unit 11 for a display thereof, through a photosensor 8, amplifier circuit 9 and an arithmetic operation circuit 10. It is possible to use a perforated sensor 13. According to this arrangement, it is possible to countinuously and precisely measure the laser power while maintaining continuous application of the laser beam. The apparatus, therefore, can suitably be used in medical treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13166480A JPS5757222A (en) | 1980-09-24 | 1980-09-24 | Power measurment mechanism of optical fiber for laser power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13166480A JPS5757222A (en) | 1980-09-24 | 1980-09-24 | Power measurment mechanism of optical fiber for laser power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5757222A true JPS5757222A (en) | 1982-04-06 |
Family
ID=15063334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13166480A Pending JPS5757222A (en) | 1980-09-24 | 1980-09-24 | Power measurment mechanism of optical fiber for laser power transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5757222A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170727A (en) * | 1984-02-15 | 1985-09-04 | Matsushita Electric Ind Co Ltd | Photodetector |
| EP0212786A1 (en) * | 1985-08-02 | 1987-03-04 | C.R. Bard, Inc. | Laser/optical fiber safety apparatus and method |
| JPS63228035A (en) * | 1987-03-17 | 1988-09-22 | Agency Of Ind Science & Technol | Monitor device |
-
1980
- 1980-09-24 JP JP13166480A patent/JPS5757222A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170727A (en) * | 1984-02-15 | 1985-09-04 | Matsushita Electric Ind Co Ltd | Photodetector |
| EP0212786A1 (en) * | 1985-08-02 | 1987-03-04 | C.R. Bard, Inc. | Laser/optical fiber safety apparatus and method |
| JPS63228035A (en) * | 1987-03-17 | 1988-09-22 | Agency Of Ind Science & Technol | Monitor device |
| JPH0541931B2 (en) * | 1987-03-17 | 1993-06-25 | Kogyo Gijutsuin |
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