公开(公告)号：US20140374600A1

公开(公告)日：2014-12-25

申请号：US14307582

申请日：2014-06-18

Applicant: Silicon Laboratories Inc.

Inventor： Jefferson L. Gokingco ,  Moshe M. Altmejd ,  Colin M. Tompkins

IPC: G01J3/02

CPC classification number: G01J1/0295 ,  G01J1/0488 ,  G01J1/16 ,  G01J1/4228 ,  G01J1/429 ,  G01J2001/1663

Abstract: An ultraviolet radiation sensor includes an ultraviolet pass filter. A first photodiode senses light passing through the ultraviolet pass filter and provides an indication of ultraviolet light. A second photodiode provides an indication of infrared radiation. A correction circuit corrects the indication of ultraviolet light sensed by the first photodiode using the indication of infrared to account for infrared radiation that passes through the ultraviolet pass filter. Additional photodiodes may be used to correct for leakage current in the first and second photodiodes and stray infrared radiation that may affect the output of the first and second photodiodes.

Abstract translation: 紫外线辐射传感器包括紫外线通过滤光器。 第一光电二极管感测通过紫外线通过滤光器的光并提供紫外光的指示。 第二光电二极管提供红外辐射的指示。 校正电路使用红外线的指示来校正由第一光电二极管感测的紫外光的指示，以考虑穿过紫外线通过滤光器的红外辐射。 可以使用附加的光电二极管来校正可能影响第一和第二光电二极管输出的第一和第二光电二极管和杂散红外辐射中的漏电流。