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公开(公告)号：EP2817613A2
公开(公告)日：2014-12-31
申请号：EP13751239.8
申请日：2013-02-21
Applicant: Massachusetts Institute of Technology
Inventor： BAO, Jie , BAWENDI, Moungi, G.
IPC: G01N21/62
CPC classification number: G01J3/28 , B82Y15/00 , B82Y20/00 , G01J1/429 , G01J3/0213 , G01J3/2803 , G01J3/513 , G01J2003/1217 , G01N21/253 , G02B1/02 , G02B2207/101 , Y10T29/41 , Y10T29/49
Abstract: A spectrometer can include a plurality of semiconductor nanocrystals. Wavelength discrimination in the spectrometer can be achieved by differing light absorption and emission characteristics of different populations of semiconductor nanocrystals (e.g., populations of different materials, sizes or both). The spectrometer therefore can operate without the need for a grating, prism, or a similar optical component. A personal UV exposure tracking device can be portable, rugged, and inexpensive, and include a semiconductor nanocrystal spectrometer for recording a user's exposure to UV radiation. Other applications include a personal device (e.g. a smartphone) or a medical device where a semiconductor nanocrystal spectrometer is integrated.
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公开(公告)号：EP1169623B1
公开(公告)日：2013-12-18
申请号：EP01905489.9
申请日：2001-02-15
Applicant: Agilent Technologies Australia (M) Pty Ltd
Inventor： HAMMER, Michael, Ron , MASTERS, Martin, Keith , CAMPBELL, Stewart, Ralph , LAYTON, Peter, George
CPC classification number: G01J5/62 , G01J3/02 , G01J3/0213 , G01J3/0227 , G01J3/0229 , G01J3/0232 , G01J3/1809 , G01J3/2803 , G01J2003/1828 , G01N21/27 , G01N21/31
Abstract: Spectroscopy apparatus for spectrochemical analysis of a sample having an excitation source (60) for providing spectral light (62) of the sample for analysis. The spectral light (62) is analysed via an optical system (64-66-68) that includes a polychromator (70, 74-80) and solid state multielement array detector (82). The elements (i.e. pixels) of the detector (82) are serially reel by means (84) to provide light intensity measurements as a function of wavelength. A problem is that the elements (pixels) of the detector (82) continue to accumulate change during the serial read-out. This is avoided by providing an optical shutter (72) for blocking the spectral light (62) whilst elements (pixels) of the detector (82) are being serially read. Shutter (72) has a piezoelectric actuator which is preferably a bimorph mounted as a cantilever. It is preferably located adjacent to the entrance aperture (70) of the polychromator. Bimorph structures for the actuator and drive and protective circuit arrangements are also disclosed.
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公开(公告)号：EP1938063B1
公开(公告)日：2011-12-21
申请号：EP06801566.8
申请日：2006-08-15
Applicant: X-Rite Incorporated
Inventor： NISPER, Jon, K. , MATER, Michael, J. , BERG, Bernard, J.
IPC: G01J3/50
CPC classification number: G01J3/10 , G01J3/02 , G01J3/0213 , G01J3/0264 , G01J3/0272 , G01J3/0275 , G01J3/0289 , G01J3/0291 , G01J3/26 , G01J3/28 , G01J3/50 , G01J3/501 , G01J3/51 , G01J3/513 , G01J3/524 , G01J2003/1213 , G01J2003/1282 , G01J2003/2866 , G01J2003/467
Abstract: An optical assembly for use with a spectrophotometer. The optical assembly may comprise an illumination source, a detection sensor, a monitor sensor, and an optical piece having a first side adapted to face a sample. The optical piece may define an illumination channel extending from the illumination source toward the first side. The optical piece may also define a detection channel extending from the first side toward the detection sensor, hi addition, the optical piece may define a monitor channel extending from the illumination channel toward the monitor sensor. Also, a light emitting diode (LED) assembly for use with an optical measurement device. The LED assembly may comprise a substrate having a top surface and a bottom surface and a plurality of LED dies positioned on the substrate to emit light in a first direction normal to the bottom surface of the substrate. The LED assembly may also comprise a plurality of leads in electrical contact with the plurality of LED dies. The plurality of leads may be positioned on the bottom surface of the substrate, and may be configured to surface-mount to a board.
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公开(公告)号：EP1666856A3
公开(公告)日：2009-06-10
申请号：EP06075401.7
申请日：1999-06-25
Applicant: Aspectrics, Inc.
Inventor： Hagler, Thomas W.
CPC classification number: G01J3/02 , G01J3/021 , G01J3/0213 , G01J3/0229 , G01J3/0289 , G01J3/12 , G01J3/18 , G01J3/32 , G01J3/433 , G01J2001/4242 , G01J2003/2866
Abstract: A disc serving as a spatial radiation modulator has dispersed radiation filters thereon. Each filter has a transmittance or reflectance modulation function of the form sin 2 (mθ +π/4), where m is a positive integer and p has one of the four values 0, 1, 2, 3. A radiation beam including selected wavelength components is diffracted into an elongated image dispersed according to wavelength. Different wavelength components are focused onto different filters on the modulator and are encoded by corresponding filters. Since the modulation functions of the filters are orthogonal to one another, it is possible to extract the amplitude of each wavelength component after it has been encoded or modulated by corresponding filter from the total detected signal during one measurement.
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公开(公告)号：EP2061372A1
公开(公告)日：2009-05-27
申请号：EP07837470.9
申请日：2007-08-29
Applicant: Carestream Health, Inc.
Inventor： LIANG, Rongguang , WONG, Victor, C. , MARCUS, Michael, A. , BRIDGES, Mark, E. , MCLAUGHLIN, Paul, O. , BURNS, Peter, D. , PATTON, David, L.
IPC: A61B5/00 , G01J3/44 , G01N21/64 , A61B1/247 , A61B1/04 , A61B1/24 , G01B9/02 , G01J4/00 , A61B1/253 , A61B1/00
CPC classification number: A61B5/0088 , A61B1/043 , A61B1/0607 , A61B1/0638 , A61B1/0646 , A61B1/0684 , A61B1/24 , A61B5/0035 , A61B5/0066 , A61B5/0071 , A61B5/0075 , A61B5/4547 , A61B5/742 , A61B5/7425 , A61C1/088 , G01B9/02091 , G01B11/2441 , G01J3/02 , G01J3/0213 , G01J3/0224 , G01J3/0272 , G01J3/10 , G01J3/4406 , G01J3/508 , G01N21/4795 , G01N21/6445 , G01N21/6456 , G01N21/6486 , G01N2021/1787
Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image (122) from the tooth and a second spectral range for exciting a fluorescence image (120) from the tooth. A polarizing beamsplitter (18) in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the second polarization state is orthogonal to the first polarization state. A first lens (22) in the return path directs image-bearing light from the tooth toward the sensor (68), and obtains image data from the portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range.
Abstract translation: 一种用于获得具有至少一个光源的至少一个光源的设备的装置，所述至少一个光源提供具有第一光谱范围的入射光，以从所述牙齿获得反射图像（122）和用于从所述牙齿激发荧光图像（120）的第二光谱范围 。 来自两个源的入射光的路径中的偏振分束器（18）将具有第一偏振态的光朝向齿引导，并将来自具有第二偏振态的齿沿着返回路径引导到传感器（68），其中 第二偏振态与第一偏振态正交。 返回路径中的第一透镜（22）将来自齿的图像承载光朝向传感器（68）引导，并从具有第二偏振状态的光的部分获得图像数据。 返回路径中的长通滤波器（15）衰减第二光谱范围内的光。
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Patent Agency Ranking276.发明公开Method and apparatus for spectrum analysis and encoder 审中-公开Verfahren und Vorrichtung zur Spektralanalyse und Kodierer
公开(公告)号：EP1666856A2
公开(公告)日：2006-06-07
申请号：EP06075401.7
申请日：1999-06-25
Applicant: Aspectrics, Inc.
Inventor： Hagler, Thomas W.
CPC classification number: G01J3/02 , G01J3/021 , G01J3/0213 , G01J3/0229 , G01J3/0289 , G01J3/12 , G01J3/18 , G01J3/32 , G01J3/433 , G01J2001/4242 , G01J2003/2866
Abstract: A disc serving as a spatial radiation modulator has dispersed radiation filters thereon. Each filter has a transmittance or reflectance modulation function of the form sin 2 (mθ +π/4), where m is a positive integer and p has one of the four values 0, 1, 2, 3. A radiation beam including selected wavelength components is diffracted into an elongated image dispersed according to wavelength. Different wavelength components are focused onto different filters on the modulator and are encoded by corresponding filters. Since the modulation functions of the filters are orthogonal to one another, it is possible to extract the amplitude of each wavelength component after it has been encoded or modulated by corresponding filter from the total detected signal during one measurement.
Abstract translation: 用作空间辐射调制器的盘在其上具有分散的辐射滤波器。 每个滤波器具有形式为sin 2（mω+À/ 4）的透射率或反射率调制函数，其中m是正整数，p具有四个值0,1,2,3中的一个。包括选择的辐射束 波长分量被衍射成根据波长分散的细长图像。 不同的波长分量聚焦在调制器上的不同滤波器上，并由相应的滤波器编码。 由于滤波器的调制功能彼此正交，因此可以在一次测量期间从总检测信号对相应的滤波器进行编码或调制之后提取每个波长分量的振幅。
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公开(公告)号：EP1224445A1
公开(公告)日：2002-07-24
申请号：EP00982628.0
申请日：2000-10-10
Applicant: Textron Systems Corporation
Inventor： GROSS, Erich, R. , LEE, Anthony, S.
CPC classification number: G01J3/02 , G01J3/0213 , G01J3/0218 , G01J3/0227 , G01J3/0256 , G01J3/0262 , G01J3/0272 , G01J3/28 , G01J3/42 , G01J3/46 , G01J3/502 , G01J3/524 , G01J2003/2866
Abstract: Percentage concentrations of constituents or color components of a sample are determined using a spectral analyzer with a wide illumination spot size and detector. The analyzer irradiates the sample, picks up diffuse reflectance of individual wavelengths from the sample and spatially separates the diffuse reflectance into a response at individual wavelengths. The result is to simultaneously detect the intensities of the individual wavelengths in parallel from the sample being analyzed. Percentage constituents of a composite substance can be determined or, alternatively, the components of color in a sample can be determined by analyzing wavelengths of reflected light.
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公开(公告)号：EP1160549A3
公开(公告)日：2002-01-23
申请号：EP01201225.8
申请日：2001-04-04
Inventor： Dubois, Jacques
CPC classification number: G01J1/04 , G01J1/0488 , G01J1/42 , G01J1/50 , G01J3/0213 , G01J3/0229 , G01J2001/0276 , G01S3/7803 , G01S3/781 , G01S3/784 , G01S7/4804
Abstract: A device for detecting laser beams where high levels of light from an extraneous source may be present in one area of the device's field-of-view. The device has a lens (3) to focus an image of the field-of-view onto a surface of a photodetector (1) and an optical limiter (2) is located between the lens (3) and the photodetector (1). The optical limiter (2) limits transmission of the light received from the extraneous source at areas of the optical limiter (2) onto which the light is focussed by the lens (3) but remains transmissive to the laser beams and light received from other areas. The device is particularly intended for use in laser warning receivers where sunlight (S) may be focussed on the optical limiter (2) and blocked at the particular area (5) of the optical limiter (2) onto which it is focussed. The optical limiter (2) does not block laser beams allowing them to be detected by the photodetector. An imaging system using the same optical arrangement can also be used in video cameras to specifically attenuate the effects of the sun on a charge coupled device (CCD) image sensor.
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公开(公告)号：EP1169623A1
公开(公告)日：2002-01-09
申请号：EP01905489.9
申请日：2001-02-15
Applicant: Varian Australia Pty. Ltd.
Inventor： HAMMER, Michael, Ron , MASTERS, Martin, Keith , CAMPBELL, Stewart, Ralph , LAYTON, Peter, George
CPC classification number: G01J5/62 , G01J3/02 , G01J3/0213 , G01J3/0227 , G01J3/0229 , G01J3/0232 , G01J3/1809 , G01J3/2803 , G01J2003/1828 , G01N21/27 , G01N21/31
Abstract: Spectroscopy apparatus for spectrochemical analysis of a sample having an excitation source (60) for providing spectral light (62) of the sample for analysis. The spectral light (62) is analysed via an optical system (64-66-68) that includes a polychromator (70, 74-80) and solid state multielement array detector (82). The elements (i.e. pixels) of the detector (82) are serially read by means (84) to provide light intensity measurements as a function of wavelength. A problem is that the elements (pixels) of the detector (82) continue to accumulate charge during the serial read-out. This is avoided by providing an optical shutter (72) for blocking the spectral light (62) whilst elements (pixels) of the detector (82) are being serially read. Shutter (72) has a piezoelectric actuator which is preferably a bimorph mounted as a cantilever. It is preferably located adjacent to the entrance aperture (70) of the polychromator. Bimorph structures for the actuator and drive and protective circuit arrangements are also disclosed.
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280.发明公开Sun optical limitation illumination detector 审中-公开Beleuchtungssensor mit optischer Begrenzung des Sonnenlichts
公开(公告)号：EP1160549A2
公开(公告)日：2001-12-05
申请号：EP01201225.8
申请日：2001-04-04
Inventor： Dubois, Jacques
CPC classification number: G01J1/04 , G01J1/0488 , G01J1/42 , G01J1/50 , G01J3/0213 , G01J3/0229 , G01J2001/0276 , G01S3/7803 , G01S3/781 , G01S3/784 , G01S7/4804
Abstract: A device for detecting laser beams where high levels of light from an extraneous source may be present in one area of the device's field-of-view. The device has a lens (3) to focus an image of the field-of-view onto a surface of a photodetector (1) and an optical limiter (2) is located between the lens (3) and the photodetector (1). The optical limiter (2) limits transmission of the light received from the extraneous source at areas of the optical limiter (2) onto which the light is focussed by the lens (3) but remains transmissive to the laser beams and light received from other areas. The device is particularly intended for use in laser warning receivers where sunlight (S) may be focussed on the optical limiter (2) and blocked at the particular area (5) of the optical limiter (2) onto which it is focussed. The optical limiter (2) does not block laser beams allowing them to be detected by the photodetector.
An imaging system using the same optical arrangement can also be used in video cameras to specifically attenuate the effects of the sun on a charge coupled device (CCD) image sensor.Abstract translation: 用于检测激光束的装置，其中来自外来源的高水平光可能存在于装置的视场的一个区域中。 该装置具有将视野图像聚焦到光电检测器（1）的表面上的透镜（3），并且光学限制器（2）位于透镜（3）和光电检测器（1）之间。 光限制器（2）限制在光限制器（2）处接收到的来自外来源的光的透射，光限制器（2）上的光被透镜（3）聚焦，但是保持对激光束的透射和从其它区域接收的光 。 该装置特别用于激光警告接收器，其中太阳光（S）可以被聚焦在光学限制器（2）上并被阻挡在其被聚焦在其上的光学限制器（2）的特定区域（5）上。 光限制器（2）不会阻挡激光束，使得它们被光检测器检测到。 使用相同光学布置的成像系统也可用于摄像机中以特别地衰减太阳对电荷耦合器件（CCD）图像传感器的影响。
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