JPS6450329U - - Google Patents
Info
- Publication number
- JPS6450329U JPS6450329U JP14497787U JP14497787U JPS6450329U JP S6450329 U JPS6450329 U JP S6450329U JP 14497787 U JP14497787 U JP 14497787U JP 14497787 U JP14497787 U JP 14497787U JP S6450329 U JPS6450329 U JP S6450329U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- optical power
- power meter
- current
- receiving element
- 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 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案に係る光パワーメータの一実施
例を示す構成ブロツク図、第２図は差動増幅器の
オフセツト電圧とその温度係数の関係を示す特性
曲線図、第３図は本考案に係る光パワーメータの
第２の実施例を示す構成ブロツク図、第４図およ
び第５図は従来の光パワーメータの例を示す構成
ブロツク図である。
１…電流電圧変換回路、１２…第１の調整手段
、１３…第２の調整手段、Ｐｉｎ…被測定光、Ｄ
１…受光素子、ｉｐ…出力電流。
Fig. 1 is a configuration block diagram showing an embodiment of the optical power meter according to the present invention, Fig. 2 is a characteristic curve diagram showing the relationship between the offset voltage of a differential amplifier and its temperature coefficient, and Fig. 3 is a diagram showing the relationship between the offset voltage of a differential amplifier and its temperature coefficient. FIGS. 4 and 5 are block diagrams showing a second embodiment of such an optical power meter, and FIGS. 4 and 5 are block diagrams showing examples of conventional optical power meters. DESCRIPTION OF SYMBOLS 1... Current-voltage conversion circuit, 12... First adjusting means, 13... Second adjusting means, P in ... Light to be measured, D
1... Light receiving element, i p ... Output current.
Claims (1)
測定する光パワーメータにおいて、受光素子の出
力電流を電圧に変換する電流電圧変換回路と、こ
の電流電圧変換回路のオフセツト電圧の温度係数
を０にする第１の調整手段と、受光素子のバイア
ス電圧を０にする第２の調整手段とを備えたこと
を特徴とする光パワーメータ。 (2) 電流電圧変換回路が差動増幅器を備え、差
動増幅器のオフセツト電圧調整用抵抗を第１の調
整手段とする実用新案登録請求の範囲第１項記載
の光パワーメータ。 (3) 第２の調整手段を演算増幅器の入力と直列
に直流電圧源を印加することにより構成した実用
新案登録請求の範囲第１項記載の光パワーメータ
。[Scope of Claim for Utility Model Registration] (1) In an optical power meter that measures the amount of light by entering the light to be measured into a light receiving element, a current-voltage conversion circuit that converts the output current of the light receiving element into voltage, and this current-voltage An optical power meter comprising: a first adjusting means for setting the temperature coefficient of the offset voltage of the conversion circuit to zero; and a second adjusting means for setting the bias voltage of the light receiving element to zero. (2) The optical power meter according to claim 1, wherein the current-voltage conversion circuit includes a differential amplifier, and the offset voltage adjusting resistor of the differential amplifier is the first adjusting means. (3) The optical power meter according to claim 1, wherein the second adjustment means is configured by applying a DC voltage source in series with the input of the operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14497787U JPS6450329U (en) | 1987-09-22 | 1987-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14497787U JPS6450329U (en) | 1987-09-22 | 1987-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6450329U true JPS6450329U (en) | 1989-03-28 |
Family
ID=31413161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14497787U Pending JPS6450329U (en) | 1987-09-22 | 1987-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6450329U (en) |
-
1987
- 1987-09-22 JP JP14497787U patent/JPS6450329U/ja active Pending
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