JPH01137644U - - Google Patents
Info
- Publication number
- JPH01137644U JPH01137644U JP1988034028U JP3402888U JPH01137644U JP H01137644 U JPH01137644 U JP H01137644U JP 1988034028 U JP1988034028 U JP 1988034028U JP 3402888 U JP3402888 U JP 3402888U JP H01137644 U JPH01137644 U JP H01137644U
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- optical axis
- optical
- light
- receiving surface
- 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 20
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 1
Description
第１図は、この考案の一実施例を示す図、第２
図は、光ビームの周波数スペクトラムを示す図、
第３図は光空間伝送装置の概略図である。
９は主発光部、１２はビームスプリツタ、１８
は副発光部、２７は光軸ずれ検出回路、３１，３
２はサーボ信号形成回路、３３は光軸ずれ信号検
出回路、３５は光軸調整回路である。
Figure 1 is a diagram showing an embodiment of this invention;
The figure shows the frequency spectrum of a light beam,
FIG. 3 is a schematic diagram of the optical space transmission device. 9 is the main light emitting part, 12 is the beam splitter, 18
27 is an optical axis deviation detection circuit; 31, 3 is a sub-light emitting unit;
2 is a servo signal forming circuit, 33 is an optical axis deviation signal detection circuit, and 35 is an optical axis adjustment circuit.
Claims (1)
あつて、 第１の光ビームを受光面に向けて発生する第１
の光ビーム発生手段と、 上記受光面での照射パターンが上記第１の光ビ
ームより大きく、上記第１の光ビームの光路と共
通の光路を通過する第２の光ビームを発生する手
段と、 上記第１又は第２の光ビームに基づいて受信側
で形成された光軸からのずれの情報を検知して、
上記第１の光ビームの光軸が上記受光面の所定位
置となるように制御する光軸制御手段とを備え、 上記第１の光ビームが上記受光面に照射されて
いる時には、上記光軸制御手段は上記第１の光ビ
ームに基づいて受信側で形成された光軸のずれ情
報を検知して上記第１の光ビームの光軸を制御す
るようにし、上記第１の光ビームが変位して、上
記受光面に照射されなくなつた時には、上記第２
の光ビームに基づいて受信側で形成された光軸の
ずれ情報を検知して上記光軸制御手段が上記第１
の光ビームの光軸を制御するようにして、上記２
点間の光軸合わせを行うようになされた光空間伝
送装置。[Claims for Utility Model Registration] An optical space transmission device that performs two-way communication between two points, which includes a first light beam that emits a first light beam toward a light receiving surface;
means for generating a second light beam having a larger irradiation pattern on the light receiving surface than the first light beam and passing through a common optical path with the first light beam; Detecting information on the deviation from the optical axis formed on the receiving side based on the first or second light beam,
an optical axis control means for controlling the optical axis of the first light beam to be at a predetermined position on the light receiving surface, and when the first light beam is irradiated onto the light receiving surface, the optical axis The control means controls the optical axis of the first light beam by detecting optical axis deviation information formed on the receiving side based on the first light beam, and the control means controls the optical axis of the first light beam by detecting optical axis deviation information formed on the receiving side based on the first light beam. Then, when the light receiving surface is no longer irradiated, the second
The optical axis control means detects optical axis deviation information formed on the receiving side based on the optical beam of the first
2 above by controlling the optical axis of the light beam.
An optical space transmission device designed to align optical axes between points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988034028U JPH01137644U (en) | 1988-03-15 | 1988-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988034028U JPH01137644U (en) | 1988-03-15 | 1988-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01137644U true JPH01137644U (en) | 1989-09-20 |
Family
ID=31260747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988034028U Pending JPH01137644U (en) | 1988-03-15 | 1988-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01137644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006067333A (en) * | 2004-08-27 | 2006-03-09 | Kddi Corp | Method and system for data transmission, mobile terminal apparatus and data receiving apparatus |
-
1988
- 1988-03-15 JP JP1988034028U patent/JPH01137644U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006067333A (en) * | 2004-08-27 | 2006-03-09 | Kddi Corp | Method and system for data transmission, mobile terminal apparatus and data receiving apparatus |
| JP4548046B2 (en) * | 2004-08-27 | 2010-09-22 | Ｋｄｄｉ株式会社 | Data transmission method and system |
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