JPH02128925U - - Google Patents
Info
- Publication number
- JPH02128925U JPH02128925U JP3757089U JP3757089U JPH02128925U JP H02128925 U JPH02128925 U JP H02128925U JP 3757089 U JP3757089 U JP 3757089U JP 3757089 U JP3757089 U JP 3757089U JP H02128925 U JPH02128925 U JP H02128925U
- Authority
- JP
- Japan
- Prior art keywords
- constant current
- light
- light receiving
- compensation circuit
- circuit
- 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.)
- Granted
Links
- 230000035945 sensitivity Effects 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案の実施例に係わる光−電気変換
器を示す回路図、第２図は従来の光−電気変換器
を示すブロツク図、第３図は従来の分離型光−電
気変換器を示すブロツク図である。
１１……センサ部、１２……本体部、１３……
接続部、１４……フオトダイオード、１７……定
電流値設定回路、１８……バイアス電源回路、１
９……受光感度補償回路、２０……定電流発生回
路。
Figure 1 is a circuit diagram showing an optical-to-electrical converter according to an embodiment of the present invention, Figure 2 is a block diagram of a conventional optical-to-electrical converter, and Figure 3 is a conventional separated optical-to-electrical converter. FIG. 11...sensor part, 12...main body part, 13...
Connection part, 14...Photodiode, 17... Constant current value setting circuit, 18... Bias power supply circuit, 1
9... Light receiving sensitivity compensation circuit, 20... Constant current generation circuit.
Claims (1)
れ、 前記センサ部が、光入力を受光する受光素子と
、定電流を設定するための定電流値設定回路とを
含んでおり、 前記本体部が、前記受光素子の受光感度のバラ
ツキを補償して所定の光−電気変換効率を得るた
めの受光感度補償回路と、前記定電流値設定回路
で設定された定電流を前記受光感度補償回路に選
択的に供給する定電流発生回路とを含んでおり、 前記受光感度補償回路が、前記定電流発生回路
から前記受光感度補償回路に定電流を供給してい
ない状態で前記受光素子に基準光を入力させた時
に前記受光感度補償回路から所定の電気出力が得
られるように調整されており、 前記受光素子を遮光状態とするか又は前記受光
感度補償回路から切り離した状態で前記定電流発
生回路から前記受光感度補償回路に定電流を供給
した時に前記受光感度補償回路から得られる電気
出力が、前記受光素子に前記基準光を入力した時
に前記受光感度補償回路から得られた電気出力と
同一になるように前記定電流値設定回路が調整さ
れていることを特徴とする光−電気変換器。 ［２］ 前記センサ部が、更に、前記受光素子に
接続された負荷抵抗を含み、前記本体部が、更に
、前記受光素子にバイアス電圧を供給するバイア
ス電源回路を含むことを特徴とする請求項１記載
の光−電気変換器。 ［３］ センサ部と本体とが分離可能に構成され
、 前記センサ部が、光入力を受光する受光素子と
、定電流を設定するための定電流値設定回路と、
前記定電流値設定回路で設定された定電流を前記
受光感度補償回路に選択的に供給する定電流発生
回路とを含んでおり、 前記本体部が、前記受光素子の受光感度のバラ
ツキを補償して所定の光−電気変換効率を得るた
めの受光感度補償回路を含んでおり、 前記受光感度補償回路が、前記定電流発生回路
から前記受光感度補償回路に定電流を供給してい
ない状態で前記受光素子に基準光を入力させた時
に前記受光感度補償回路から所定の電気出力が得
られるように調整されており、 前記受光素子を遮光状態とするか又は前記受光
感度補償回路から切り離した状態で前記定電流発
生回路から前記受光感度補償回路の定電流を供給
した時に前記受光感度補償回路から得られる電気
出力が、前記受光素子に前記基準光を入力した時
に前記受光感度補償回路から得られた電気出力と
同一になるように前記定電流値設定回路が調整さ
れていることを特徴とする光−電気変換器。[Claims for Utility Model Registration] [1] The sensor section and the main body section are configured to be separable, and the sensor section includes a light receiving element that receives light input and a constant current value setting circuit for setting the constant current. The main body includes a light receiving sensitivity compensation circuit for compensating for variations in light receiving sensitivity of the light receiving element to obtain a predetermined light-to-electrical conversion efficiency, and a constant current value set by the constant current value setting circuit. a constant current generation circuit that selectively supplies a constant current to the light reception sensitivity compensation circuit, and the light reception sensitivity compensation circuit does not supply a constant current from the constant current generation circuit to the light reception sensitivity compensation circuit. The light-receiving element is adjusted so that a predetermined electrical output is obtained from the light-receiving sensitivity compensation circuit when reference light is input to the light-receiving element in the state of When a constant current is supplied from the constant current generating circuit to the light receiving sensitivity compensation circuit in a state where the constant current is supplied to the light receiving sensitivity compensation circuit, the electrical output obtained from the light receiving sensitivity compensation circuit is equal to An optical-to-electrical converter characterized in that the constant current value setting circuit is adjusted so as to be equal to the obtained electrical output. [2] The sensor section further includes a load resistor connected to the light receiving element, and the main body section further includes a bias power supply circuit that supplies a bias voltage to the light receiving element. 1. The optical-to-electrical converter according to 1. [3] The sensor section and the main body are configured to be separable, and the sensor section includes a light receiving element that receives optical input, and a constant current value setting circuit for setting a constant current;
a constant current generating circuit that selectively supplies the constant current set by the constant current value setting circuit to the light receiving sensitivity compensation circuit, and the main body section compensates for variations in light receiving sensitivity of the light receiving element. and a light-receiving sensitivity compensation circuit for obtaining a predetermined photo-to-electrical conversion efficiency, and the light-receiving sensitivity compensation circuit operates in a state where the constant current is not supplied from the constant current generation circuit to the light-receiving sensitivity compensation circuit. Adjustment is made so that a predetermined electrical output is obtained from the light receiving sensitivity compensation circuit when reference light is input to the light receiving element, and when the light receiving element is in a light shielding state or separated from the light receiving sensitivity compensation circuit. The electrical output obtained from the light receiving sensitivity compensation circuit when the constant current is supplied from the constant current generation circuit to the light receiving sensitivity compensation circuit is the same as the electric output obtained from the light receiving sensitivity compensation circuit when the reference light is input to the light receiving element. An optical-to-electrical converter, characterized in that the constant current value setting circuit is adjusted so as to be equal to the electrical output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3757089U JPH0518674Y2 (en) | 1989-03-30 | 1989-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3757089U JPH0518674Y2 (en) | 1989-03-30 | 1989-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02128925U true JPH02128925U (en) | 1990-10-24 |
| JPH0518674Y2 JPH0518674Y2 (en) | 1993-05-18 |
Family
ID=31544806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3757089U Expired - Lifetime JPH0518674Y2 (en) | 1989-03-30 | 1989-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0518674Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020038860A (en) * | 2018-09-03 | 2020-03-12 | 新日本無線株式会社 | Optical sensor circuit |
-
1989
- 1989-03-30 JP JP3757089U patent/JPH0518674Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020038860A (en) * | 2018-09-03 | 2020-03-12 | 新日本無線株式会社 | Optical sensor circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0518674Y2 (en) | 1993-05-18 |
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