JPH0457731U - - Google Patents
Info
- Publication number
- JPH0457731U JPH0457731U JP10073990U JP10073990U JPH0457731U JP H0457731 U JPH0457731 U JP H0457731U JP 10073990 U JP10073990 U JP 10073990U JP 10073990 U JP10073990 U JP 10073990U JP H0457731 U JPH0457731 U JP H0457731U
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving element
- optical power
- power meter
- sensor head
- 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
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案の一実施例の構成を示す図、第
２図ａ，ｂはそれぞれ、平行光および集束光がセ
ンサに入射する様子を示す図、第３図はＧｅ（ゲ
ルマニユウム）フオトダイオードの入射角依存性
（入射角と感度差の関係）を示す図、第４図はＳ
ｉ（シリコン）フオトダイオードの入射角依存性
を示す図、第５図および第６図は光が受光素子に
対して斜めに入射することにより生じる測定誤差
を説明するための図である。
１……センサヘツド、２……フオトダイオード
、３……ホルダ、４……コリメータ用レンズ、５
……入射光、６……光パワーメータ。
Figure 1 is a diagram showing the configuration of an embodiment of the present invention, Figures 2a and b are diagrams showing how parallel light and focused light enter the sensor, respectively, and Figure 3 is a Ge (germanium) photodiode. Figure 4 shows the incident angle dependence (relationship between incident angle and sensitivity difference) of S.
FIGS. 5 and 6 are diagrams showing the incident angle dependence of an i (silicon) photodiode, and are diagrams for explaining measurement errors caused by oblique incidence of light onto a light-receiving element. 1...Sensor head, 2...Photodiode, 3...Holder, 4...Collimator lens, 5
...Incoming light, 6...Optical power meter.
Claims (1)
光素子２から得られる電気信号に基づいて入射し
た光のパワーを測定する本体部６とを有する光パ
ワーメータにおいて、 前記受光素子２の直前に、集束光を平行光に変
換するためのコリメート用レンズ４が設けられて
いることを特徴とする光パワーメータ。[Claims for Utility Model Registration] An optical power meter comprising a sensor head 1 having a light-receiving element 2 and a main body 6 that measures the power of incident light based on an electrical signal obtained from the light-receiving element 2, comprising: An optical power meter characterized in that a collimating lens 4 for converting focused light into parallel light is provided immediately in front of a light receiving element 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10073990U JPH0457731U (en) | 1990-09-26 | 1990-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10073990U JPH0457731U (en) | 1990-09-26 | 1990-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457731U true JPH0457731U (en) | 1992-05-18 |
Family
ID=31843614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10073990U Pending JPH0457731U (en) | 1990-09-26 | 1990-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457731U (en) |
-
1990
- 1990-09-26 JP JP10073990U patent/JPH0457731U/ja active Pending
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