Title:
【発明の名称】送信装置
Document Type and Number:
Japanese Patent JP2705104
Kind Code:
B2
Abstract:
In an optical atmospheric link system for transmitting a light beam carrying an information signal between a transmitter and a receiver which is located apart from the transmitter, the transmitter includes a light source for generating the first light beam modulated with the information signal, a first optical system for transmitting the light beam toward the receiver, a second optical system for turning at least a portion of the light beam, and a third optical system for observing the light beam turned by the second optical system and the receiver. Also, the receiver includes a first detector for receiving the first light beam transmitted from the transmitter through the first optical system, detecting a relative position of the first light beam received and the receiver and for generating a position error signal, a second light source for generating a second light beam modulated with the position error signal, and a second optical system for transmitting the second light beam generated by the second light source toward the transmitter, wherein the transmitter further includes a second detector for receiving the second light beam transmitted from the receiver through the second optical system and demodulating the second light beam to obtain the position error signal, and a position control circuit for controlling a position of the transmitter according to the position error signal obtained by the second detector so that the light beam is directed toward the receiver.
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Inventors:
Yujiro Ito
Koji Suzuki
Koji Suzuki
Application Number:
JP12354388A
Publication Date:
January 26, 1998
Filing Date:
May 20, 1988
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04B10/079; H04B10/11; H04B10/112; (IPC1-7): H04B10/105; H04B10/10; H04B10/22
Domestic Patent References:
| JP5770208U |
Attorney, Agent or Firm:
Kei Tanabe