초록 ▼

An optical atmospheric link device which is adapted to quickly correct the incident position of a light beam with high follow-up accuracy. Incident position detection signals are generated by an optical beam incident position detector in correspondence to the incident position of a first optical bea

An optical atmospheric link device which is adapted to quickly correct the incident position of a light beam with high follow-up accuracy. Incident position detection signals are generated by an optical beam incident position detector in correspondence to the incident position of a first optical beam. The incident position detection signal along with a reference incidence position signal, are utilized to generate incident position correcting signal. The incident position correcting is utilized to move a lens to quickly correct the incident position in a small amplitude mode. Furthermore, a displacement detection signal is generated which corresponds to the displacement of the lens. The displacement detection signal and the incident position correcting signal are utilized to move a pair of mirrors to slowly correct the incident position in a large amplitude mode.

대표청구항 ▼

An optical atmospheric link device, comprising: a) a lens to receive a first light beam and to transmit said light beam therethrough; b) mirror means for receiving said transmitted light beam and for reflecting said transmitted light beam; c) position determining means coupled to receive the transmi

An optical atmospheric link device, comprising: a) a lens to receive a first light beam and to transmit said light beam therethrough; b) mirror means for receiving said transmitted light beam and for reflecting said transmitted light beam; c) position determining means coupled to receive the transmitted, reflected, light-beam and for producing a position error signal responsive thereto; d) lens shifting means for shifting said lens in a direction perpendicular to the received light beam; e) mirror rotating means for shifting a position of said mirror means to change a direction of reflection of said transmitted light beam; f) first control means for receiving said position error signal and for producing a mirror positioning signal responsive thereto, wherein said motor rotating means rotates said mirror means responsive to said mirror positioning signal; g) mirror position detecting sensors for detecting a position of said mirror means and for producing a mirror position signal responsive thereto; and h) second control means for receiving said position error signal and said mirror position signal and for producing a lens positioning signal responsive thereto, wherein said lens shifting means shifts said lens responsive to said lens positioning signal.