Optical communications – Optical communication over freee space – Transmitter and receiver
Reexamination Certificate
2007-02-20
2007-02-20
Li, Shi K. (Department: 2613)
Optical communications
Optical communication over freee space
Transmitter and receiver
C398S129000
Reexamination Certificate
active
10454551
ABSTRACT:
A free space optics communication apparatus which achieves high use efficiency of light and enables free control of the divergent angle of a light beam and the like is disclosed. The free space optics communication apparatus of the present invention has a light source which emits a light beam for performing wireless communication of information, and a minute mirror array unit which consists of a plurality of minute mirrors arranged in a matrix-like form and reflects the light beam emitted from the light source toward another apparatus. The apparatus also has a control unit which controls the directions of the individual minute mirrors constituting the minute mirror array unit independently. The control unit may be used to variably control the number of a plurality of mirror groups formed of a plurality of the minute mirrors in the minute mirror array unit.
REFERENCES:
patent: 5523193 (1996-06-01), Nelson
patent: 5593549 (1997-01-01), Stirbl et al.
patent: 6501877 (2002-12-01), Weverka et al.
Ohtsubo Masatoshi
Takahashi Yasuhiro
Canon Kabushiki Kaisha
Li Shi K.
Morgan & Finnegan L.L.P.
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