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    Integrating chamber cone light using LED sources
    172.
    发明授权
    Integrating chamber cone light using LED sources 有权

    公开(公告)号：US07157694B2

    公开(公告)日：2007-01-02

    申请号：US11294565

    申请日：2005-12-06

    Applicant: Donald F. May ,  Jack C. Rains, Jr.

    Inventor： Donald F. May ,  Jack C. Rains, Jr.

    IPC: F21V9/00

    CPC classification number: F21K9/50 ,  F21K9/60 ,  F21K9/62 ,  F21Y2113/20 ,  F21Y2115/10 ,  G01J3/0254 ,  G01J3/0264 ,  G01J3/10 ,  G01J3/501

    Abstract: A system to provide radiant energy of selectable spectral characteristic (e.g. a selectable color combination) uses an integrating cavity to combine energy of different wavelengths from different sources. The cavity has a diffusely reflective interior surface and an aperture for allowing emission of combined radiant energy. Sources of radiant energy of different wavelengths, typically different-color LEDs, supply radiant energy into the interior of the integrating cavity. In the examples, the points of entry of the energy into the cavity typically are located so that they are not directly visible through the aperture. The cavity effectively integrates the energy of different wavelengths, so that the combined radiant energy emitted through the aperture includes the radiant energy of the various wavelengths. The apparatus also includes a control circuit coupled to the sources for establishing output intensity of radiant energy of each of the sources. Control of the intensity of emission of the sources sets the amount of each wavelength of energy in the combined output and thus determines a spectral characteristic of the radiant energy output through the aperture.

    Color measurement instrument
    174.
    发明授权
    Color measurement instrument 有权

    公开(公告)号：US07145657B2

    公开(公告)日：2006-12-05

    申请号：US11370670

    申请日：2006-03-08

    Applicant: Steven H. Peterson ,  Robert A. Lamfers

    Inventor： Steven H. Peterson ,  Robert A. Lamfers

    IPC: G01J3/50

    CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/0286 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/50 ,  G01J3/501 ,  G01J3/524

    Abstract: An LED-based color measurement instrument including an illumination system and a sensing system. The illumination system includes modulated LEDs and a temperature control system for regulating the temperature of the LEDs, thereby improving the consistency of their performance. The sensing system includes a photodiode, a transimpedance amplifier, and an integrator in the first stage to cancel the effect of ambient light on the output of the first stage. The sensing system also includes a lens system for imaging a target area of the target sample onto the photo sensor in a manner so that the product of the target area times the solid angle captured by the lens system is generally uniform over a selected range of distances, thereby reducing the positional sensitivity of the instrument with respect to the target sample.

    Systems and methods for compensating for temperature induced spectral emission variations in LED based color parameter measuring devices
    175.
    发明申请
    Systems and methods for compensating for temperature induced spectral emission variations in LED based color parameter measuring devices 有权
    用于补偿基于LED的颜色参数测量装置中的温度感应光谱发射变化的系统和方法

    公开(公告)号：US20060221341A1

    公开(公告)日：2006-10-05

    申请号：US11092674

    申请日：2005-03-30

    Applicant: Peter Paul ,  Lalit Mestha ,  Claude Fillion ,  R. Viturro

    Inventor： Peter Paul ,  Lalit Mestha ,  Claude Fillion ,  R. Viturro

    IPC: G01N21/25 ,  G01J3/50

    CPC classification number: G01J3/50 ,  G01J3/501 ,  G01J3/524 ,  G01J2003/466 ,  G01N21/255

    Abstract: Systems and method provide compensation for temperature induced peak wavelength shift of LEDs is color parameter measuring systems that use a model to reconstruct target color parameter values from the reflectance values measured when the target is illuminated by LEDs. Several models may be constructed, with each model being trained at a unique temperature, resulting in a set of models that span the temperature range of interest. In real-time, the LED based color parameter measuring system measures the temperature and interpolates between the models to estimate the appropriate model to use at the temperature of interest. The estimated model is then used to perform the color parameter value estimation.

    Abstract translation: 系统和方法为温度引起的LED的峰值波长偏移提供补偿是使用模型从由LED照射目标时测量的反射率值重建目标颜色参数值的颜色参数测量系统。 可以构建几个模型，每个模型在独特的温度下进行训练，得到一组跨越感兴趣的温度范围的模型。 基于LED的颜色参数测量系统实时测量模型之间的温度和内插，以估计在感兴趣的温度下使用的适当模型。 然后使用估计的模型来执行颜色参数值估计。

    Color image forming apparatus and color measurement controlling method therefor
    176.
    发明授权
    Color image forming apparatus and color measurement controlling method therefor 有权
    彩色图像形成装置及其测色控制方法

    公开(公告)号：US07111784B2

    公开(公告)日：2006-09-26

    申请号：US10772359

    申请日：2004-02-06

    Applicant: Toshiki Nakayama

    Inventor： Toshiki Nakayama

    IPC: G06K7/10

    CPC classification number: G03G15/5062 ,  G01J1/32 ,  G01J1/44 ,  G01J3/501 ,  G01J3/51 ,  G01J3/513 ,  G01N21/27 ,  G01N21/274

    Abstract: A color image forming apparatus, when a white LED is made to emit light onto a color image so that the reflected light can be detected, changes a color measuring condition in adaptation to a reflectance predicted for the image from the forming condition of the color image to be detected. The amount of reflected light is detected by photodiodes, and the image forming condition is adjusted, based on the detected amount of reflected light of each color image. Thereby, irrespective of the reflectance of each color image, the color measurement of each color image is effected with good accuracy, and the hue and density of the color image to be detected are accurately detected, thereby to form a color image with excellent color reproduction.

    Abstract translation: 一种彩色图像形成装置，当使白色LED发光到彩色图像上以使得可以检测反射光时，根据彩色图像的成形条件，适应于针对图像预测的反射率来改变颜色测量条件 被检测。 通过光电二极管检测反射光的量，并且基于检测到的每个彩色图像的反射光量来调整图像形成条件。 因此，不管每个彩色图像的反射率如何，每个彩色图像的颜色测量都以良好的精度进行，并且准确地检测要检测的彩色图像的色调和浓度，从而形成具有优异色彩再现的彩色图像 。

    Spectrophotometer with light emitting diode illuminator
    177.
    发明申请
    Spectrophotometer with light emitting diode illuminator 失效
    分光光度计带发光二极管照明器

    公开(公告)号：US20060203240A1

    公开(公告)日：2006-09-14

    申请号：US11371839

    申请日：2006-03-08

    Applicant: Alan Ingleson

    Inventor： Alan Ingleson

    IPC: G01J3/42

    CPC classification number: G01J3/42 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0251 ,  G01J3/0297 ,  G01J3/10 ,  G01J3/50 ,  G01J3/501

    Abstract: In one embodiment, the invention is spectrophotometer with a light emitting diode illuminator. In one embodiment, a spectrophotometer for characterizing a reflectance spectrum of a specimen includes an optical assembly for illuminating the specimen, where the optical assembly includes at least one light emitting diode. A measurement head is coupled to the optical assembly for collecting light reflected by the specimen, and a spectrum analyzer is coupled to the measurement head for performing spectral analysis of the collected light into a plurality of spectral bands. A reference channel provides illumination from the optical assembly to the spectrum analyzer, while a test channel provides the collected light from the measurement head to the spectrum analyzer.

    Abstract translation: 在一个实施例中，本发明是具有发光二极管照明器的分光光度计。 在一个实施例中，用于表征样本的反射光谱的分光光度计包括用于照射样本的光学组件，其中光学组件包括至少一个发光二极管。 测量头耦合到光学组件以收集由样本反射的光，并且频谱分析仪耦合到测量头，用于对所收集的光进行多个光谱带的光谱分析。 参考通道提供从光学组件到频谱分析仪的照明，而测试通道将从测量头收集的光提供给频谱分析仪。

    Color measurement instrument
    178.
    发明申请
    Color measurement instrument 有权

    公开(公告)号：US20060152725A1

    公开(公告)日：2006-07-13

    申请号：US11370670

    申请日：2006-03-08

    Applicant: Steven Peterson ,  Robert Lamfers

    Inventor： Steven Peterson ,  Robert Lamfers

    IPC: G01J3/50

    CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/0286 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/50 ,  G01J3/501 ,  G01J3/524

    Abstract: An LED-based color measurement instrument including an illumination system and a sensing system. The illumination system includes modulated LEDs and a temperature control system for regulating the temperature of the LEDs, thereby improving the consistency of their performance. The sensing system includes a photodiode, a transimpedance amplifier, and an integrator in the first stage to cancel the effect of ambient light on the output of the first stage. The sensing system also includes a lens system for imaging a target area of the target sample onto the photo sensor in a manner so that the product of the target area times the solid angle captured by the lens system is generally uniform over a selected range of distances, thereby reducing the positional sensitivity of the instrument with respect to the target sample.

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