公开(公告)号：US09201018B2

公开(公告)日：2015-12-01

申请号：US14139303

申请日：2013-12-23

Applicant: Frank Martin Haran

Inventor： Frank Martin Haran

IPC: G01N21/86 ,  G01N21/3581 ,  G01J3/42 ,  G01N21/27

CPC classification number: G01N21/86 ,  G01J3/32 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/323 ,  G01N21/27 ,  G01N21/3559 ,  G01N21/3581 ,  G01N21/8901 ,  G01N2021/8663 ,  G01N2021/869 ,  G01N2201/061 ,  G01N2201/08

Abstract: Scanning sensor for measuring properties of continuous flat sheet, that is moving in the machine direction, employs an IR radiation source for directing a beam of incident IR radiation that impinges the sheet. The IR source has elongated lamp filament that generates IR radiation and the corresponding spot size formed on the sheet has elongated dimensions with its long axis being aligned with the machine direction. Aligned with the MD maximizes sensor spatial resolution in the cross direction. The sensor can employ a receiver having rectangular geometry with its long axis being aligned also in the MD. Scanning sensor can operate in the reflective, transmissive, or offset transmission mode to monitor characteristics of flat sheets, particularly of paper or plastic products.

Abstract translation: 用于测量沿机器方向移动的连续平板的性质的扫描传感器采用IR辐射源来引导撞击片材的入射IR辐射束。 IR源具有细长的灯丝，其产生IR辐射，并且形成在片材上的相应光斑尺寸具有细长尺寸，其长轴与机器方向对准。 与MD对齐，使传感器空间分辨率最大化。 传感器可以采用具有矩形几何形状的接收器，其长轴也在MD中对准。 扫描传感器可以在反射，透射或偏移传输模式下操作，以监测平板，特别是纸或塑料制品的特性。

公开(公告)号：US20150177155A1

公开(公告)日：2015-06-25

申请号：US14139303

申请日：2013-12-23

Applicant: Frank Martin Haran

Inventor： Frank Martin Haran

IPC: G01N21/86 ,  G01N21/27

CPC classification number: G01N21/86 ,  G01J3/32 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/323 ,  G01N21/27 ,  G01N21/3559 ,  G01N21/3581 ,  G01N21/8901 ,  G01N2021/8663 ,  G01N2021/869 ,  G01N2201/061 ,  G01N2201/08

Abstract: Scanning sensor for measuring properties of continuous flat sheet, that is moving in the machine direction, employs an IR radiation source for directing a beam of incident IR radiation that impinges the sheet. The IR source has elongated lamp filament that generates IR radiation and the corresponding spot size formed on the sheet has elongated dimensions with its long axis being aligned with the machine direction. Aligned with the MD maximizes sensor spatial resolution in the cross direction. The sensor can employ a receiver having rectangular geometry with its long axis being aligned also in the MD. Scanning sensor can operate in the reflective, transmissive, or offset transmission mode to monitor characteristics of flat sheets, particularly of paper or plastic products.

Abstract translation: 用于测量沿机器方向移动的连续平板的性质的扫描传感器采用IR辐射源来引导撞击片材的入射IR辐射束。 IR源具有细长的灯丝，其产生IR辐射，并且形成在片材上的相应光斑尺寸具有细长尺寸，其长轴与机器方向对准。 与MD对齐，使传感器空间分辨率最大化。 传感器可以采用具有矩形几何形状的接收器，其长轴也在MD中对准。 扫描传感器可以在反射，透射或偏移传输模式下操作，以监测平板，特别是纸或塑料制品的特性。

公开(公告)号：US5009099A

公开(公告)日：1991-04-23

申请号：US349201

申请日：1989-05-09

Applicant: Gregory J. Wells ,  Barbara A. Bolton

Inventor： Gregory J. Wells ,  Barbara A. Bolton

IPC: G01J3/32 ,  G01J3/36 ,  G01N21/73 ,  G01N30/62 ,  G01N30/74

CPC classification number: G01N21/73 ,  G01J2003/323 ,  G01J3/36 ,  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 unitl the carbon response reaches a preselected threshold value corresponding to the point on the calibration curve where there is a measurable spurious reading.

公开(公告)号：US09383259B2

公开(公告)日：2016-07-05

申请号：US14466119

申请日：2014-08-22

Applicant: Nokia Technologies Oy

Inventor： Ravi Shenoy ,  Krishna Annasagar Govindarao ,  Mithun Uliyar ,  Veldandi Muninder

IPC: G01J5/00 ,  G01J3/28 ,  H04N9/04 ,  H01L27/146 ,  G02B5/20 ,  G01J3/02 ,  G01J3/32

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IR截止滤波器对入射光进行滤波以产生滤光。 IR截止滤波器包括具有可见光波长的通带特性的多个像素，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截止滤波器接收到的滤波光被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的NIR信号。 通过解调调制的NIR信号来确定与入射光相关联的近红外光谱。 基于NIR光谱和基带信号确定与入射光相关的可见光谱。

公开(公告)号：US20150060645A1

公开(公告)日：2015-03-05

申请号：US14466119

申请日：2014-08-22

Applicant: Nokia Corporation

Inventor： Ravi Shenoy ,  Krishna Annasagar Govindarao ,  Mithun Uliyar ,  Veldandi Muninder

IPC: G01J3/28 ,  H01L27/146

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IR截止滤波器对入射光进行滤波以产生滤光。 IR截止滤波器包括具有可见光波长的通带特性的多个像素，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截止滤波器接收到的滤波光被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的NIR信号。 通过解调调制的NIR信号来确定与入射光相关联的近红外光谱。 基于NIR光谱和基带信号确定与入射光相关的可见光谱。

公开(公告)号：US5022755A

公开(公告)日：1991-06-11

申请号：US349200

申请日：1989-05-09

Applicant: Gregory J. Wells ,  Barbara A. Bolton

Inventor： Gregory J. Wells ,  Barbara A. Bolton

IPC: G01N21/73 ,  G01J3/32 ,  G01N21/27 ,  G01N30/74

CPC classification number: G01J3/32 ,  G01J2003/323

Abstract: In a spectrophotometer having photodetectors positioned at fixed wavelengths, the photodetector is divided into three subdetectors, a main subdetector on the wavelength of interest and two background subdetectors located on each side of the main subdetector, the background subdetectors together having area equal to that of the main subdetector, the background subdetectors being connected in polarity reverse that of the main subdetector to correct for changes in background radiation.