-
1.发明授权公开(公告)号：US08379286B2
公开(公告)日：2013-02-19
申请号：US13116430
申请日：2011-05-26
IPC分类号： G02B26/00
CPC分类号： G02F1/017 , B82Y20/00 , G02F2203/02
摘要： A modulating retroreflector system includes a modulating retroreflector having a plurality of multiple quantum well modulator pixels and at least one transimpedance amplifier. The transimpedance amplifier receives a photocurrent generated by at least one of the plurality of modulator pixels. Each pixel is capacitively coupled to a current driver, which applies a high frequency digital electrical signal to the pixel when the voltage at the output of the transimpedance amplifier exceeds a threshold value. The modulated output of the retroreflector is reflected toward the source of the received optical beam. The system activates high frequency current drivers for only the illuminated pixels, eliminating the need for a separate angle of incidence sensor and reducing power requirements. A low frequency FSK signal can be superimposed on the DC optical interrogation beam and recovered as the unfiltered output of the transimpedance amplifier, to provide simultaneous bidirectional communication without a half-duplex communication protocol.
摘要翻译： 调制后向反射器系统包括具有多个多量子阱调制器像素和至少一个跨阻放大器的调制后向反射器。 跨阻放大器接收由多个调制器像素中的至少一个产生的光电流。 每个像素电容耦合到电流驱动器，当跨阻放大器的输出处的电压超过阈值时，该电流驱动器向像素施加高频数字电信号。 后向反射器的调制输出朝向所接收的光束的源反射。 该系统激活只有照明像素的高频电流驱动器，无需单独的入射角传感器和降低功率需求。 低频FSK信号可以叠加在DC光询问光束上，并作为跨滤波放大器的未滤波输出恢复，以提供同时双向通信而无需半双工通信协议。
-
2.发明申请Integrated Angle of Arrival Sensing and Duplex Communication with Cats-Eye Multiple Quantum Well Modulating Retroreflector 有权综合角度与猫眼多量子井调制逆反射器的到达感应和双工通信公开(公告)号：US20110292485A1
公开(公告)日：2011-12-01
申请号：US13116430
申请日：2011-05-26
IPC分类号： G02F1/01
CPC分类号： G02F1/017 , B82Y20/00 , G02F2203/02
摘要： A modulating retroreflector system includes a modulating retroreflector having a plurality of multiple quantum well modulator pixels and at least one transimpedance amplifier. The transimpedance amplifier receives a photocurrent generated by at least one of the plurality of modulator pixels. Each pixel is capacitively coupled to a current driver, which applies a high frequency digital electrical signal to the pixel when the voltage at the output of the transimpedance amplifier exceeds a threshold value. The modulated output of the retroreflector is reflected toward the source of the received optical beam. The system activates high frequency current drivers for only the illuminated pixels, eliminating the need for a separate angle of incidence sensor and reducing power requirements. A low frequency FSK signal can be superimposed on the DC optical interrogation beam and recovered as the unfiltered output of the transimpedance amplifier, to provide simultaneous bidirectional communication without a half-duplex communication protocol.
摘要翻译： 调制后向反射器系统包括具有多个多量子阱调制器像素和至少一个跨阻放大器的调制后向反射器。 跨阻放大器接收由多个调制器像素中的至少一个产生的光电流。 每个像素电容耦合到电流驱动器，当跨阻放大器的输出处的电压超过阈值时，该电流驱动器向像素施加高频数字电信号。 后向反射器的调制输出朝向所接收的光束的源反射。 该系统激活只有照明像素的高频电流驱动器，无需单独的入射角传感器和降低功率需求。 低频FSK信号可以叠加在DC光询问光束上，并作为跨滤波放大器的未滤波输出恢复，以提供同时双向通信而无需半双工通信协议。
-
搜索结果
2 条记录 (耗时 0.01 秒)
