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    • 6. 发明授权
    • High NA optical system and device
    • 高NA光学系统和设备
    • US08899792B2
    • 2014-12-02
    • US13243052
    • 2011-09-23
    • Dung T. DuongRobert McAlisterRandall E. Johnson
    • Dung T. DuongRobert McAlisterRandall E. Johnson
    • F21V5/00G02B19/00H01L33/58F21K99/00
    • F21V5/008F21K9/60F21K9/62F21V13/02G02B19/0028G02B19/0061H01L33/58
    • Embodiments described herein provide an optical system having a light source (e.g., LED) and a high numerical aperture multi-element optical stack. According to one embodiment, the optical stack can reimage an entrance aperture. The multi-element optical stack can include a number of optical elements forming a series of lenses. The series of lenses comprises, a first lens positioned to receive light emitted in a first beam angle and a second lens more distal from the LED than the first lens, the second lens defining a second lens exit aperture that has at least a minimum area necessary to conserve radiance for the emission beam angle in air. The lenses in said series of lenses are configured, in combination, to successively reduce a beam angle of light from the first beam angle to the emission beam angle.
    • 本文描述的实施例提供了具有光源(例如,LED)和高数值孔径多元素光学堆叠的光学系统。 根据一个实施例,光学堆叠可以重新形成入射孔。 多元件光学堆叠可以包括形成一系列透镜的多个光学元件。 该系列透镜包括:第一透镜,其定位成接收以第一光束角发射的光,并且第二透镜比第一透镜更远离LED,第二透镜限定具有至少最小面积必需的第二透镜出射孔 以保存空气中发射光束角的辐射。 所述一系列透镜中的透镜组合地被配置为连续地将来自第一光束角的光束角度减小到发射光束角度。
    • 7. 发明申请
    • High NA Optical System and Device
    • 高NA光学系统和设备
    • US20120120662A1
    • 2012-05-17
    • US13243052
    • 2011-09-23
    • Dung T. DuongRobert McAlisterRandall E. Johnson
    • Dung T. DuongRobert McAlisterRandall E. Johnson
    • F21V5/04
    • F21V5/008F21K9/60F21K9/62F21V13/02G02B19/0028G02B19/0061H01L33/58
    • Embodiments described herein provide an optical system having a light source (e.g., LED) and a high numerical aperture multi-element optical stack. According to one embodiment, the optical stack can reimage an entrance aperture. The multi-element optical stack can include a number of optical elements forming a series of lenses. The series of lenses comprises, a first lens positioned to receive light emitted in a first beam angle and a second lens more distal from the LED than the first lens, the second lens defining a second lens exit aperture that has at least a minimum area necessary to conserve radiance for the emission beam angle in air. The lenses in said series of lenses are configured, in combination, to successively reduce a beam angle of light from the first beam angle to the emission beam angle.
    • 本文描述的实施例提供了具有光源(例如,LED)和高数值孔径多元素光学堆叠的光学系统。 根据一个实施例,光学堆叠可以重新形成入射孔。 多元件光学堆叠可以包括形成一系列透镜的多个光学元件。 该系列透镜包括:第一透镜,其定位成接收以第一光束角发射的光,并且第二透镜比第一透镜更远离LED,第二透镜限定具有至少最小面积必需的第二透镜出射孔 以保存空气中发射光束角的辐射。 所述一系列透镜中的透镜组合地被配置为连续地将来自第一光束角的光束角度减小到发射光束角度。
    • 8. 发明授权
    • RFID parking tag and method of monitoring vehicle parking
    • RFID停车标签和车辆停车监控方法
    • US08302847B2
    • 2012-11-06
    • US11828743
    • 2007-07-26
    • Randall E. JohnsonDaniel J. Selke
    • Randall E. JohnsonDaniel J. Selke
    • G06F17/00
    • G08G1/14G08G1/017
    • A system for monitoring the parking status of vehicles incorporating a plurality of wireless identification tags, each tag having a unique tag identifier and having association with a selected vehicle. The system also includes a portable scanner to be used by a parking monitor, the portable scanner having a processor executing instructions thereon, a tag scanner capable of reading a wireless identification tag of a selected vehicle located in relatively close proximity over a wireless link, and a communication device capable of communicating over a wireless wide area network to transmit information about vehicle parking status. A server, having a database with fields for each of the selected vehicles, communicates with the portable scanner over the wireless wide area network to log data related to vehicle parking status. A software program may also be used to facilitate communication between the scanner and the vehicle owner and/or between the scanner and a tow service.
    • 一种用于监视结合有多个无线识别标签的车辆的停车状态的系统,每个标签具有唯一的标签标识符并且与所选择的车辆相关联。 该系统还包括便携式扫描器,由停车监视器使用,该便携式扫描仪具有执行指令的处理器,能够读取位于无线链路上相对靠近的所选车辆的无线识别标签的标签扫描器,以及 能够通过无线广域网进行通信以发送关于车辆停车状态的信息的通信装置。 具有每个所选车辆的字段的数据库的服务器通过无线广域网与便携式扫描器通信以记录与车辆停车状态相关的数据。 还可以使用软件程序来促进扫描仪与车主之间的通信和/或扫描器与拖曳服务之间的通信。