JPS643526A - Light probe - Google Patents
Light probeInfo
- Publication number
- JPS643526A JPS643526A JP13719388A JP13719388A JPS643526A JP S643526 A JPS643526 A JP S643526A JP 13719388 A JP13719388 A JP 13719388A JP 13719388 A JP13719388 A JP 13719388A JP S643526 A JPS643526 A JP S643526A
- Authority
- JP
- Japan
- Prior art keywords
- output
- diode
- measuring instrument
- optical
- signals
- 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
Abstract
PURPOSE: To make an optical probe connectable to an ordinary measuring instrument and to easily measure optical signals from an optical fiber using the measuring instrument by converting the optical signals into electric signals and performing impedance matching to output the electric signals. CONSTITUTION: A beam of light from an optical fiber 16 is converged on a photodiode 20 through a rod lens 18 and the output of the diode 20 is converted into a current output by a high bias voltage. The dynamic range of the diode 20 is improved by an offset current source 22 and a probe can be applied to a beam of light having a wide range of intensities. The diode 20 is connected to a transformer impedance amplifier 24 and converts an input current into an output voltage. The output impedance of the diode 20 is matched by means of a terminating resistor RT and can be inputted to an oscilloscope through a connector 26. Therefore, optical signals can be measured with an ordinary measuring instrument.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5829987A | 1987-06-05 | 1987-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS643526A true JPS643526A (en) | 1989-01-09 |
Family
ID=22015941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13719388A Pending JPS643526A (en) | 1987-06-05 | 1988-06-03 | Light probe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS643526A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0949097A3 (en) * | 1998-04-09 | 2000-09-20 | Sanden Corporation | Air conditioner for vehicles |
EP2505393A1 (en) | 2011-03-31 | 2012-10-03 | Kabushiki Kaisha Toyota Jidoshokki | Vehicle air conditioner |
-
1988
- 1988-06-03 JP JP13719388A patent/JPS643526A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0949097A3 (en) * | 1998-04-09 | 2000-09-20 | Sanden Corporation | Air conditioner for vehicles |
EP2505393A1 (en) | 2011-03-31 | 2012-10-03 | Kabushiki Kaisha Toyota Jidoshokki | Vehicle air conditioner |
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