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    • 23. 发明申请
    • MISALIGNMENT TOLERANT FREE SPACE OPTICAL TRANSCEIVER
    • 缺陷免费空间光收发器
    • WO2008156765A1
    • 2008-12-24
    • PCT/US2008/007553
    • 2008-06-16
    • HEWLETT-PACKARD DEVELOPMENT COMPANY, L. P.TAN, MichaelFATTAL, DavidMORRIS, Terrel
    • TAN, MichaelFATTAL, DavidMORRIS, Terrel
    • G02B6/42
    • H04B10/803
    • In accordance with an aspect of the invention, a system has a transmitter and a receiver, where the transmitter includes a beam source (210) and an optical element (220). The beam source (210) produces a beam (212) that respresents information , and the optical element (220) alters the beam (212) so that the beam (222) has a uniform intensity over a cross-sectional area. The receiver is separated from the transmiiter by free space through which the beam (222) propagates and includes as active area positioned to receive a portion of the beam (222) that the receiver converts into a received signal. To accommodate possible misalignment, the cross-sectional area of the beam (222) is larger than the active area by an amount that accommodates a range of misalignment of the receiver with the transmitter.
    • 根据本发明的一个方面,系统具有发射器和接收器,其中发射器包括光束源(210)和光学元件(220)。 光束源(210)产生重现信息的光束(212),并且光学元件(220)改变光束(212),使得光束(222)在横截面积上具有均匀的强度。 接收机通过自由空间与发射机分开,波束(222)通过自由空间传播,并且包括作为接收波束(222)的一部分的有源区域,接收机转换成接收信号。 为了适应可能的未对准,光束(222)的横截面面积大于有效区域,其量适应接收器与发射器的未对准范围。