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    • 25. 发明申请
    • Portable LED-illuminated radiance source
    • 便携式LED照明辐射源
    • US20050270776A1
    • 2005-12-08
    • US11144303
    • 2005-06-03
    • David AllenHoward Yoon
    • David AllenHoward Yoon
    • F21V9/40F21V1/00G01J1/08G01J3/10G01J5/52G01N21/27
    • G01N21/274G01J1/0252G01J1/08G01J3/0272G01J3/0286G01J3/10G01J5/522G01N2201/062G01N2201/0627
    • An LED-based radiance source that is compact, temporally stable and uniform, and particularly useful in applications such as calibration and characterization of radiation thermometers, night vision devices, environmental remote sensing systems, biological agent detection, and any radiometer which needs a stable radiance source. The LED-based radiance source is a suitable replacement of lamp-based integrating sphere sources where they are used as stable and uniform radiance sources. The LED-based radiance source includes an array of LEDs having substantially similar radiance output wavelengths and a radiation detector such as a photodiode that detects and monitors radiation directed from the LEDs. Temperature of the LEDs can be controlled by feedback from the photodiode, thereby allowing for control and stabilization of temperature-dependent radiation output.
    • 基于LED的辐射源,紧凑,时间稳定和均匀,特别适用于辐射温度计的校准和表征,夜视设备,环境遥感系统,生物试剂检测和需要稳定辐射的任何辐射计 资源。 基于LED的辐射源是适合替代基于灯的积分球源,它们被用作稳定和均匀的辐射源。 基于LED的辐射源包括具有基本相似的辐射输出波长的LED阵列和诸如光电二极管的辐射检测器,其检测并监视从LED指向的辐射。 可以通过来自光电二极管的反馈来控制LED的温度,从而允许温度依赖性辐射输出的控制和稳定。