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11.发明公开Method, apparatus and computer program product for sensing of visible spectrum and near infrared spectrum 有权用于检测所述可见光谱和近红外光谱的方法，装置和计算机程序产品
公开(公告)号：EP2843938A2
公开(公告)日：2015-03-04
申请号：EP14182188.4
申请日：2014-08-26
Applicant: Nokia Corporation
Inventor： Shenoy, Ravi , Govindarao, Krishna Annasagar , Uliyar, Mithun , Muninder, Veldandi
IPC: H04N5/33
CPC classification number: G01J3/2823 , G01J3/0213 , G01J3/32 , G01J2003/283 , G01J2003/323 , G02B5/201 , G02B5/208 , H01L27/14625 , H04N9/045
Abstract: In accordance with an example embodiment a method, apparatus and computer program product are provided. The method comprises filtering incident light by an IR cut-off filter to generate filtered light. The IR cut-off filter comprises a plurality of pixels with pass-band characteristics for visible light wavelengths and is configured to perform stop-band attenuation of near infrared (NIR) wavelengths. The stop-band attenuation is configured to vary based on spatial location of pixels within the IR cut-off filter. The filtered light received from the IR cut-off filter is sensed by the image sensor to generate sensed light. A baseband signal and a modulated NIR signal are determined by performing transformation of the sensed light. A NIR spectrum associated with the incident light is determined by demodulating the modulated NIR signal. A visible spectrum associated with the incident light is determined based on the NIR spectrum and the baseband signal.
Abstract translation: 在与实施方式的一个例子雅舞蹈提供了一种方法，装置和计算机程序产品。 该方法通过在IR截止滤光器包括过滤入射光以生成经过滤的光。 红外截止滤光器包括具有用于可见光波长通带特性的像素的多个部分并加以被配置成执行近红外（NIR）波长的阻带衰减。 阻带衰减被配置成基于所述IR截止滤光器内的像素的空间位置而变化。 从IR截止滤光器接收的经滤波的光由图像传感器感测到产生感测的光。 的基带信号和调制信号NIR是确定性的通过进行感测的光的变换开采。 与入射光相关的NIR光谱确定性通过解调所述调制信号NIR开采。 与入射光相关联的可见光谱确定性开采基于所述NIR光谱和基带信号。
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公开(公告)号：EP0397469B1
公开(公告)日：1995-10-04
申请号：EP90304989.8
申请日：1990-05-09
Applicant: VARIAN ASSOCIATES, INC.
Inventor： Wells, Gregory James , Bolton, Barbara Ann
CPC classification number: G01N21/73 , G01J3/36 , G01J2003/323 , G01N30/74
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Patent Agency Ranking13.发明授权
公开(公告)号：EP2843938B1
公开(公告)日：2017-09-27
申请号：EP14182188.4
申请日：2014-08-26
Applicant: Nokia Technologies Oy
Inventor： Shenoy, Ravi , Govindarao, Krishna Annasagar , Uliyar, Mithun , Muninder, Veldandi
IPC: H04N5/33 , H04N5/335 , H04N9/04 , G01J3/28 , G06T3/40 , G02B5/20 , G01J3/02 , G01J3/32 , H01L27/146
CPC classification number: G01J3/2823 , G01J3/0213 , G01J3/32 , G01J2003/283 , G01J2003/323 , G02B5/201 , G02B5/208 , H01L27/14625 , H04N9/045
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14.发明公开Method, apparatus and computer program product for sensing of visible spectrum and near infrared spectrum 有权用于感测可见光谱和近红外光谱的方法，设备和计算机程序产品
公开(公告)号：EP2843938A3
公开(公告)日：2015-03-25
申请号：EP14182188.4
申请日：2014-08-26
Applicant: Nokia Corporation
Inventor： Shenoy, Ravi , Govindarao, Krishna Annasagar , Uliyar, Mithun , Muninder, Veldandi
CPC classification number: G01J3/2823 , G01J3/0213 , G01J3/32 , G01J2003/283 , G01J2003/323 , G02B5/201 , G02B5/208 , H01L27/14625 , H04N9/045
Abstract: In accordance with an example embodiment a method, apparatus and computer program product are provided. The method comprises filtering incident light by an IR cut-off filter to generate filtered light. The IR cut-off filter comprises a plurality of pixels with pass-band characteristics for visible light wavelengths and is configured to perform stop-band attenuation of near infrared (NIR) wavelengths. The stop-band attenuation is configured to vary based on spatial location of pixels within the IR cut-off filter. The filtered light received from the IR cut-off filter is sensed by the image sensor to generate sensed light. A baseband signal and a modulated NIR signal are determined by performing transformation of the sensed light. A NIR spectrum associated with the incident light is determined by demodulating the modulated NIR signal. A visible spectrum associated with the incident light is determined based on the NIR spectrum and the baseband signal.
Abstract translation: 根据示例实施例，提供了一种方法，装置和计算机程序产品。 该方法包括通过红外截止滤光片过滤入射光以产生滤光。 IR截止滤光片包括多个具有用于可见光波长的通带特性的像素，并被配置为执行近红外（NIR）波长的阻带衰减。 阻带衰减被配置为基于IR截止滤波器内的像素的空间位置而变化。 从IR截止滤波器接收的过滤光由图像传感器感测以产生感测光。 通过执行感测光的变换来确定基带信号和调制NIR信号。 通过解调调制的NIR信号来确定与入射光相关联的NIR光谱。 基于NIR频谱和基带信号确定与入射光相关的可见光谱。
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公开(公告)号：EP0397467B1
公开(公告)日：1993-07-07
申请号：EP90304987.2
申请日：1990-05-09
Applicant: VARIAN ASSOCIATES, INC.
Inventor： Wells, Gregory James , Bolton, Barbara Ann
CPC classification number: G01J3/32 , G01J2003/323
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公开(公告)号：EP0397469A3
公开(公告)日：1992-06-17
申请号：EP90304989.8
申请日：1990-05-09
Applicant: VARIAN ASSOCIATES, INC.
Inventor： Wells, Gregory James , Bolton, Barbara Ann
CPC classification number: G01N21/73 , G01J3/36 , G01J2003/323 , G01N30/74
Abstract: A method of correcting for background changes in a plasma emission detector comprising a photodetector array is disclosed. In the photodetector array a plurality of sensors are used to detect the emission lines from a discrete number of selected elements including carbon. It is shown that, to the first order, there is a correlation between the response at detectors other than the carbon detector with the response at a carbon detector. The exact extent of this correlation is highly dependent on the amount of nitrogen present in the carrier gas used in the system. A calibration curve can be generated which allows compensation at a frequency of interest as a function of the magnitude of the carbon signal. This curve will depend on the level of nitrogen in the carrier gas and can be empirically determined each time a new bottle of gas is connected to the system. In a preferred embodiment, the calibration curve is not referred to until the carbon response reaches a preselected threshold value corresponding to the point on the calibration curve where there is a measurable spurious reading.
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公开(公告)号：CS9002171A2
公开(公告)日：1991-09-15
申请号：CS217190
申请日：1990-05-02
Applicant: ZEISS JENA VEB CARL
Inventor： GARTNER WOLFGANG DR ING , SCHIEK OSWALD
CPC classification number: G01J3/04 , G01J2003/047 , G01J2003/323
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