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公开(公告)号：US20230244070A1
公开(公告)日：2023-08-03
申请号：US18011176
申请日：2021-06-16
发明人： Frank MÜNCHOW , Stephanie GRABHER , Martin FINGER
CPC分类号： G02B21/18 , G02B27/106 , G02B27/288 , G01J3/0218
摘要： The present disclosure relates to a measuring system for measuring a light source in a polarization-independent manner, having a camera comprising a plurality of image sensors arranged in the form of a matrix, and a microscope optics, and to a method for measuring the light sources in a polarization-independent manner. The aim is to make it possible to measure the light output of the light source in an improved, simple and largely polarization-independent manner while maintaining the spatial resolution in the microscopic range. To that end, the present disclosure proposes that a linear polarizer is associated with each of the image sensors, wherein the linear polarizers are arranged in the form of a matrix in front of the image sensors and two or more, preferably four, polarizers form a matrix block, wherein the transmission directions of adjacent linear polarizers within a matrix block are rotated relative to one another, preferably by 45° or by 90°. In the method according to the present disclosure, the measurement signals of the image sensors that are associated with the polarizers of the same matrix block are converted into light output measured values in order to obtain the desired polarization independence.
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公开(公告)号：US11598668B2
公开(公告)日：2023-03-07
申请号：US17268932
申请日：2019-08-09
发明人： Matthias Hoeh , Reto Haring , Florian Schewe , Martin Mangstl , Thorsten Kopp
摘要： The invention relates to a method for monitoring a spectroradiometer (4), in particular for measuring light-emitting test objects (1), in which the spectral data of the test objects (1) are captured by means of an optical system, wherein the radiometric, photometric and/or colorimetric quantities of the test objects (1) are ascertained from the spectral data. The problem addressed by the invention is that of specifying a method for monitoring a spectroradiometer (4), where it is not the continuous recalibration of the spectroradiometer (4) but the monitoring of when a calibration is necessary that is paramount. The invention solves this problem by virtue of changes in the wavelength scale, in the light throughput and/or in the spectral sensitivity of the spectroradiometer (4) being detected by way of a reference light source (5), integrated into the optical system, with a defined spectrum. Optionally, at least one detector integrated into the optical system can additionally monitor the stability of the reference light source (5). Moreover, the invention relates to a device for carrying out the method.
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公开(公告)号：US20170336257A1
公开(公告)日：2017-11-23
申请号：US15532222
申请日：2015-12-01
发明人： Felix Frank , Richard Young , Juliane Kraft , Reto Haring
CPC分类号： G01J3/10 , G01J3/28 , G01J3/505 , G01J3/524 , G01J2003/2866
摘要： The invention relates to a method for calibrating a spectroradiometer (1), comprising the following method steps: capture of light measurement data by the measurement of the radiation of at least one standard light source (4) using the spectroradiometer (1) that is to be calibrated; derivation of calibrated data from the light measurement data by the comparison of the captured light measurement data with known data of the standard light source (4); and calibration of the spectroradiometer (1) according to the calibration data. The aim of the invention is to provide a reliable and practical method for calibrating the spectroradiometer (1). In particular, the synchronism of spectroradiometers (1) situated in different locations (9, 10, 11) is to be produced simply and reliably. To achieve this aim, the validity, i.e. the usability, of the standard light source for the calibration is checked by a comparison of the light measurement data of the standard light source (4) with light measurement data of one or more additional standard light sources (4) of the same type, the validity of the standard light source (4) being established if the deviations of the light measurement data of the standard light sources (4) from one another lie below predefined limit values, and/or the standard light source (4) is measured using two or more standard spectroradiometers (1′) of the same type or of different types, the validity of the standard light source (4) being established if the deviations of the light measurement data from one another, said data being captured using the different standard spectroradiometers (1′), lie below predefined limit values.
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公开(公告)号：US20210396575A1
公开(公告)日：2021-12-23
申请号：US17297810
申请日：2019-11-27
发明人： Reto HÄRING , Christian RIXNER , Florian SCHEWE , Siegbert SADOWSKI , Angel GAVRAILOV , Christian DOTZLER , Martin MANGSTL
摘要： The invention relates to a method for the sequential measurement of a plurality of semiconductor-based light sources such as LEDs, OLEDs or VCSELs, in particular comparatively low-luminosity light sources such as so-called micro-LEDs. The invention further relates to a device for carrying out the method. The object of the present invention is to provide a method that operates faster, more accurately and more sensitively than the known methods, which operate by scanning with a photodiode or with a spectrometer. The method according to the invention proposes for this that a current pulse is applied by means of a pulsed current source (1) to the low-luminosity light sources consecutively or simultaneously. The emitted light pulse of the LED (2) is converted into electric charge carriers by means of a photodiode (3), the electric charge carriers are added up by means of an integrator circuit (5), the added-together charge carriers are converted by means of an A/D converter (6) into a digital signal and the digital signal is forwarded to a measurement and control unit (7). The invention also relates to a method and a corresponding device for the sequential measurement of a plurality of optical pulses, wherein the pulsed light radiation enters an Ulbricht sphere (10) through an inlet opening (11), a first portion of the light radiation, which exits the Ulbricht sphere (10) following interaction with the same through a first outlet opening, is measured by means of a first detector (14, 18) and a second portion of the light radiation, which exits the Ulbricht sphere (10) without interaction with the same through a second outlet opening (19), is measured by means of a second detector (14′).
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公开(公告)号：US11193830B2
公开(公告)日：2021-12-07
申请号：US16160584
申请日：2018-10-15
发明人： Ye Yin , Yi-Fan Chou , Anuj Bhatnagar
摘要： A spectro-colorimeter system for imaging pipeline is provided, the system including a camera system; a spectrometer system; and a controller coupling the camera system and the spectrometer system. In some embodiments the camera system is configured to provide a color image with the first portion of the incident light. Also, in some embodiments the spectrometer system is configured to provide a tristimulus signal from the second portion of the incident light. Furthermore, in some embodiments the controller is configured to correct the color image from the camera system using the tristimulus signal from the spectrometer. An imaging pipeline method for using a system as above is also provided. Further, a method for color selection in an imaging pipeline calibration is provided.
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公开(公告)号：US20210270670A1
公开(公告)日：2021-09-02
申请号：US17268932
申请日：2019-08-09
发明人： Mathias HOH , Reto HARING , Florian SCHEWE , Martin MANGSTL , Thorsten KOPP
摘要： The invention relates to a method for monitoring a spectroradiometer (4), in particular for measuring light-emitting test objects (1), in which the spectral data of the test objects (1) are captured by means of an optical system, wherein the radiometric, photometric and/or colorimetric quantities of the test objects (1) are ascertained from the spectral data. The problem addressed by the invention is that of specifying a method for monitoring a spectroradiometer (4), where it is not the continuous recalibration of the spectroradiometer (4) but the monitoring of when a calibration is necessary that is paramount. The invention solves this problem by virtue of changes in the wavelength scale, in the light throughput and/or in the spectral sensitivity of the spectroradiometer (4) being detected by way of a reference light source (5), integrated into the optical system, with a defined spectrum. Optionally, at least one detector integrated into the optical system can additionally monitor the stability of the reference light source (5). Moreover, the invention relates to a device for carrying out the method.
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公开(公告)号：US20190120694A1
公开(公告)日：2019-04-25
申请号：US16160584
申请日：2018-10-15
发明人： Ye YIN , Yi-Fan CHOU , Anuj BHATNAGAR
摘要： A spectro-colorimeter system for imaging pipeline is provided, the system including a camera system; a spectrometer system; and a controller coupling the camera system and the spectrometer system. In some embodiments the camera system is configured to provide a color image with the first portion of the incident light. Also, in some embodiments the spectrometer system is configured to provide a tristimulus signal from the second portion of the incident light. Furthermore, in some embodiments the controller is configured to correct the color image from the camera system using the tristimulus signal from the spectrometer. An imaging pipeline method for using a system as above is also provided. Further, a method for color selection in an imaging pipeline calibration is provided.
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公开(公告)号：US10088364B2
公开(公告)日：2018-10-02
申请号：US15016587
申请日：2016-02-05
发明人： Taro Sasada , Jurgen Neumeier , Reto Haring
IPC分类号： G06K9/00 , G01J3/50 , G01J3/46 , G01J3/52 , G01J3/02 , H04N9/30 , H04N17/04 , G06T7/90 , G06K9/46
摘要： The invention relates to a method for two-dimensional, spatially resolved measurement of tristimulus values of light emitted from a plurality of positions on a sample. It is an object of the invention to provide an improved method and system for spatially resolved chromaticity and luminance measurement in a standardized color space for display testing. The method of the invention comprises the steps of: directing a first portion of the light to an RGB camera which produces a two-dimensional map of RGB color values; transforming the RGB color values into first tristimulus values to produce a map of tristimulus values; directing a second portion of the light to a colorimeter which produces second tristimulus values; deriving a tristimulus correction by comparing the second tristimulus values with at least a subset of the first tristimulus values; and applying the tristimulus correction to the first tristimulus values to produce a corrected map of tristimulus values. Moreover, the invention relates to an imaging colorimeter system capable of two-dimensional, spatially resolved measurement of tristimulus values of light emitted from a plurality of positions on a sample.
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公开(公告)号：US20160131524A1
公开(公告)日：2016-05-12
申请号：US14937263
申请日：2015-11-10
发明人： Kurt Arenhold , Peter Khrustalev , Reto Häring
CPC分类号： G01J3/0297 , G01J3/501 , G01J3/513 , G01J3/524
摘要： A colorimeter with multiple sensings of light to provide higher accuracy measurements of the primaries of a human-standard observer based color space is provided. This color space (target color space) must have the characteristic of two chromaticity coordinates and an achromatic primary like CIELAB, CIELUV or xyY in CIE 1931. The calibration of the device includes training with a set of calibration illuminants. Two sets of calibration-factors are determined. The first set of calibration factors yields intensity of primaries optimized with respect to chromaticity, the second set yields the optimized intensity of the achromatic primary. The combination of these sets of calibration factors enable the colorimeter to deliver values of that light with respect to three primaries of a human-standard-observer-based color space optimized with respect to chromaticity and the achromatic primary.
摘要翻译： 提供了具有多种感光的比色计，以提供基于人标准观察者的颜色空间的基准的更高精度的测量。 该色彩空间（目标色彩空间）必须具有CIE 1931中的两个色度坐标和无色原色（如CIELAB，CIELUV或xyY）的特征。该设备的校准包括一组校准光源的训练。 确定两组校准因子。 第一组校准因子产生相对于色度优化的原色的强度，第二组产生无色初级的优化强度。 这些校准因子组的组合使得色度计相对于基于色度和无色原色优化的基于人 - 基准 - 观察者的颜色空间的三个基色传递该光的值。
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公开(公告)号：US20160234490A1
公开(公告)日：2016-08-11
申请号：US15018193
申请日：2016-02-08
发明人： Taro Sasada , Jürgen Neumeier , Reto Häring
CPC分类号： G01J3/506 , G01J3/0243 , G01J3/462 , G01J3/465 , G01J3/524 , G06K9/46 , G06K9/4652 , G06K9/4661 , G06T7/90 , H04N9/30 , H04N17/04
摘要： A method for two-dimensional, spatially resolved measurement of tristimulus values of light emitted from a plurality of positions on a sample. In various embodiments, an improved method and system is provided for spatially resolved chromaticity and luminance measurement in a standardized color space for display testing. The method may include directing a first portion of the light to an RGB camera which produces a two-dimensional map of RGB color values; transforming the RGB color values into first tristimulus values to produce a map of tristimulus values; directing a second portion of the light to a colorimeter which produces second tristimulus values; deriving a tristimulus correction by comparing the second tristimulus values with at least a subset of the first tristimulus values; and applying the tristimulus correction to the first tristimulus values to produce a corrected map of tristimulus values. In many embodiments, the imaging colorimeter system is capable of two-dimensional, spatially resolved measurement of tristimulus values of light emitted from a plurality of positions on a sample.
摘要翻译： 用于二维空间分辨测量从样品上的多个位置发射的光的三刺激值的方法。 在各种实施例中，提供了用于在用于显示测试的标准化颜色空间中的空间分辨色度和亮度测量的改进的方法和系统。 该方法可以包括将光的第一部分引导到产生RGB颜色值的二维图的RGB相机; 将RGB颜色值转换为第一三刺激值以产生三刺激值的图; 将第二部分光引导到产生第二三刺激值的色度计; 通过将所述第二三刺激值与所述第一三刺激值的至少一个子集进行比较来导出三刺激校正; 以及将所述三刺激校正应用于所述第一三刺激值以产生三刺激值的校正图。 在许多实施例中，成像色度计系统能够对从样品上的多个位置发射的光的三刺激值进行二维空间分辨测量。
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