JPH0429248U - - Google Patents
Info
- Publication number
- JPH0429248U JPH0429248U JP7050090U JP7050090U JPH0429248U JP H0429248 U JPH0429248 U JP H0429248U JP 7050090 U JP7050090 U JP 7050090U JP 7050090 U JP7050090 U JP 7050090U JP H0429248 U JPH0429248 U JP H0429248U
- Authority
- JP
- Japan
- Prior art keywords
- photodiode
- optical
- attenuation
- output level
- amount
- 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
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Optical Communication System (AREA)
Description
第１図は本考案の空間伝送式光通信受信装置の
実施例の構成を示す図、第２図は第１図中のサー
ボ回路の構成詳細図、第３図は従来の空間伝送式
光通信受信装置の構成概要図である。
１……受信素子たるフオトダイオード、２……
光学可変減衰器、３……モータ、４……サーボ回
路、５……増幅器、６……集光レンズ、７……信
号処理回路、８……バツフア、９……整流回路、
１０……ウインドコンパレータ、１４……バツフ
ア、１６……送信増幅器、１７……送信発光ダイ
オード、１８……フオトダイオード、１９……自
動利得制御（ＡＧＣ）付増幅器、２０……増幅器
、２１……リミツタ。
Figure 1 is a diagram showing the configuration of an embodiment of the space transmission type optical communication receiver of the present invention, Figure 2 is a detailed diagram of the configuration of the servo circuit in Figure 1, and Figure 3 is a diagram showing the configuration of a conventional space transmission type optical communication receiver. FIG. 2 is a schematic diagram of the configuration of a receiving device. 1...Photodiode as a receiving element, 2...
Optical variable attenuator, 3... Motor, 4... Servo circuit, 5... Amplifier, 6... Condenser lens, 7... Signal processing circuit, 8... Buffer, 9... Rectifier circuit,
10...Window comparator, 14...Buffer, 16...Transmission amplifier, 17...Transmission light emitting diode, 18...Photodiode, 19...Amplifier with automatic gain control (AGC), 20...Amplifier, 21... Limits.
Claims (1)
イオードと； 該フオトダイオードへの受光経路
上に設けられ、外部からの入射光を制御された減
衰量で減衰させる光学可変減衰器と； 前記フオ
トダイオードの出力レベルが予め定められたレベ
ル範囲から逸脱しないよう該出力レベルに応じて
前記光学可変減衰器の減衰量を制御する減衰制御
器と； を具備することを特徴とする空間伝送式
光通信受信装置。 a photodiode that receives an optical signal and converts it into an electrical signal; an optical variable attenuator that is provided on a light receiving path to the photodiode and that attenuates external incident light with a controlled attenuation amount; the photodiode an attenuation controller that controls the amount of attenuation of the variable optical attenuator according to the output level so that the output level of the optical variable attenuator does not deviate from a predetermined level range; Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7050090U JPH0429248U (en) | 1990-07-02 | 1990-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7050090U JPH0429248U (en) | 1990-07-02 | 1990-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0429248U true JPH0429248U (en) | 1992-03-09 |
Family
ID=31606713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7050090U Pending JPH0429248U (en) | 1990-07-02 | 1990-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0429248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011119919A (en) * | 2009-12-02 | 2011-06-16 | Mitsubishi Electric Corp | System and apparatus for optical wireless communication |
-
1990
- 1990-07-02 JP JP7050090U patent/JPH0429248U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011119919A (en) * | 2009-12-02 | 2011-06-16 | Mitsubishi Electric Corp | System and apparatus for optical wireless communication |
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