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1. 发明申请

US20080158548A1 Integrated Sensor for Correlated Color Temperature and Illuminance Sensing 有权
标题翻译：用于相关色温和照度感测的集成传感器
公开(公告)号：US20080158548A1
公开(公告)日：2008-07-03
申请号：US11618420
申请日：2006-12-29
申请人： Dengpeng Chen , Chi Boon Ong , Chee Heng Wong
发明人： Dengpeng Chen , Chi Boon Ong , Chee Heng Wong
IPC分类号： G01N21/00
CPC分类号： G01J5/602 , G01J1/0488 , G01J1/1626 , G01J1/4228 , G01J2001/4247 , H04N9/735
摘要： A sensor for measuring the properties of light from a light source is disclosed. The sensor includes first and second photodetectors that are illuminated by the light. The first and second photodetectors generate first and second photodetector signals indicative of the first and second weighted averages of the intensity of light in a wavelength band between 400 nm and 700 nm. The first photodiode is more sensitive to light having wavelengths between 400 nm and 500 nm than the second photodetector. The sensor also includes a color temperature processing circuit that generates a first processed signal that is related to a ratio of the first and second signals. The color temperature processing circuit could include first and second logarithmic amplifiers that generate first and second logarithmic signals, respectively, from the first and second photodetector signals and a subtraction circuit that forms a signal indicative of the difference between the first and second logarithmic signals.
摘要翻译：公开了一种用于测量来自光源的光的性质的传感器。传感器包括由光照射的第一和第二光电检测器。第一和第二光电检测器产生指示在400nm和700nm之间的波长带中的光强度的第一和第二加权平均值的第一和第二光电检测器信号。第一光电二极管对波长在400nm和500nm之间的光比第二光电检测器更敏感。传感器还包括色温处理电路，其生成与第一和第二信号的比率有关的第一处理信号。色温处理电路可以包括分别从第一和第二光电检测器信号产生第一和第二对数信号的第一和第二对数放大器，以及形成表示第一和第二对数信号之间的差的信号的减法电路。

2. 发明授权

US07604360B2 Integrated sensor for correlated color temperature and illuminance sensing 有权
标题翻译：用于相关色温和照度感测的集成传感器
公开(公告)号：US07604360B2
公开(公告)日：2009-10-20
申请号：US11618420
申请日：2006-12-29
申请人： Dengpeng chen , Chi Boon Ong , Chee Heng Wong
发明人： Dengpeng chen , Chi Boon Ong , Chee Heng Wong
IPC分类号： G03B15/02 , H04N5/222
CPC分类号： G01J5/602 , G01J1/0488 , G01J1/1626 , G01J1/4228 , G01J2001/4247 , H04N9/735
摘要： A sensor for measuring the properties of light from a light source is disclosed. The sensor includes first and second photodetectors that are illuminated by the light. The first and second photodetectors generate first and second photodetector signals indicative of the first and second weighted averages of the intensity of light in a wavelength band between 400 nm and 700 nm. The first photodiode is more sensitive to light having wavelengths between 400 nm and 500 nm than the second photodetector. The sensor also includes a color temperature processing circuit that generates a first processed signal that is related to a ratio of the first and second signals. The color temperature processing circuit could include first and second logarithmic amplifiers that generate first and second logarithmic signals, respectively, from the first and second photodetector signals and a subtraction circuit that forms a signal indicative of the difference between the first and second logarithmic signals.
摘要翻译：公开了一种用于测量来自光源的光的性质的传感器。传感器包括由光照射的第一和第二光电检测器。第一和第二光电检测器产生指示在400nm和700nm之间的波长带中的光强度的第一和第二加权平均值的第一和第二光电检测器信号。第一光电二极管对波长在400nm和500nm之间的光比第二光电检测器更敏感。传感器还包括色温处理电路，其生成与第一和第二信号的比率有关的第一处理信号。色温处理电路可以包括分别从第一和第二光电检测器信号产生第一和第二对数信号的第一和第二对数放大器，以及形成表示第一和第二对数信号之间的差的信号的减法电路。

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