Abstract:
Le filtre multispectral pour dispositif de détection d'images comporte une lame prismatique (85) comportant une première face interne (86) et une deuxième face externe (87), la première et la deuxième face (86, 87) étant inclinées l'une par rapport à l'autre d'un angle β et comporte au moins deux bandes spectrales différentes (91, 92, 93, 94) déposées indifféremment sur la première ou la deuxième face (86, 87) de la lame prismatique (85), les différentes bandes spectrales (91, 92, 93, 94) étant espacées l'une de l'autre d'une distance (D) prédéterminée. Application aux imageurs multispectraux, en particulier aux imageurs Off Axis. Ce filtre permet la suppression des images fantômes (ou échos parasites) générés au plan focal d'un imageur multispectral.
Abstract:
In the spectroscopy module 1, a light detecting element 4 is provided with a light passing opening 4b through which light made incident into a body portion 2 passes. Therefore, it is possible to prevent deviation of the relative positional relationship between the light passing opening 4b and a light detection portion 4a of the light detecting element 4. Further, an optical element 7, which guides light made incident into the body portion 2, is arranged at the light passing opening 4b. Therefore, light, which is to be made incident into the body portion 2, is not partially blocked at a light incident edge portion of the light passing opening 4b, but light, which is to be made incident into the body portion 2, can be guided securely. Therefore, according to the spectroscopy module 1, it is possible to improve the reliability.
Abstract:
A color measurement device designed for use at various stages of an industrial process is provided. The device offers enhanced insensitivity to ambient light, measurement depth variations, and/or ambient or environmental temperature variations. The device may be embodied as an LED-based, non-contact color measurement spectrophotometer. Over- illumination in full-spectrum of the target object facilitates effective color measurements over varying depths of view. Collected light is measured at discrete wavelengths across the entire visual spectrum. The hardened, rugged design and packaging of the measurement device allows color measurement to be performed at various stages of industrial processes wherein the device can add value by enabling enhanced detection of color errors.
Abstract:
The present solution relates to a measurement system and a method for determining spectrometric measurement results with a high level of accuracy. The inventive spectrometric measurement system with compensation for false light comprises at least one radiation source, at least one entrance slit, a dispersion element and a detector having detector elements which are arranged in a linear manner or in the form of a matrix on one or more planes. In this case, the detector has a regular distribution of at least two different wavelength-selective filters on its detector elements. Although detectors from photo and video applications are used in this case, use of the invention is not restricted to the visible spectral range. If necessary, some of the colour filters for the pixels may be omitted or modified in the last step of producing the colour camera. However, it is also possible to use other types of detectors in which the wavelength-selective filters and the associated detectors are arranged behind one another on a plurality of planes, in the case of which the full colour information is available to each individual pixel.
Abstract:
Ein Detektor, insbesondere zur spektralen Detektion von Licht in einem Mikroskop, mit einer photosensitiven Anordnung (1) mit mindestens einer photosensitiven Fläche, wobei in einem Strahlengang vor der photosensitiven Anordnung (1) ein Mittel zur Fokussierung eines spektral aufgespaltenen Lichts auf die photosensitive Anordnung (1) angeordnet ist, ist im Hinblick auf eine besonders hohe Detektionsgeschwindigkeit derart ausgestaltet und weitergebildet, dass das Mittel eine Mikrolinsen-Anordnung (2) mit mindestens einer Mikrolinse aufweist. Des Weiteren sind ein Spektrometer und ein Mikroskop mit einem derartigen Detektor angegeben,
Abstract:
A method for reducing fringe interference of light created in a passive cavity defined by partially reflecting optical surfaces (6, 7), wherein the optical path length (L) of the cavity is varied with a Gaussian distribution, where the standard deviation is at least one-quarter of the light's wavelength.
Abstract:
Die Erfindung betrifft ein kreisscheibenförmiges Trägersystem mit einer Mehrzahl integrierter Beugungsstrukturen zur Spektralzerlegung von Licht der Wellenlängen 340 - 800 nm, wobei jede Beugungsstruktur eine Schicht aus einem transparenten Kunststoff umfasst, die eine zur Beugung einer innerhalb des Wellenlängenspektrums des Lichts liegende Wellenlänge geeignete Mikrostruktur aufweist, und das Trägersystem mindestens zwei Beugungsstrukturen zur Beugung von Licht unterschiedlicher Wellenlänge umfasst.
Abstract:
A method and system for effecting an appearance model correction for a display unit, e.g., a CRT, using a polynomial-based algorithm is described. The correction may be effected in real time and is based on gamma values associated with the display. Strong correlations with the CIECAM02 specification are achieved according to the present disclosure. The correction functionality may be implemented using a colorimeter that includes a plurality of sensors/filter systems with non overlappng spectral responses, adequate for providing data capable of translation into standard coordinates system such as, CIE XYZ, CIE L* a* b*, or CIE Luv, as well as non-standard operable coordinate systems. The field of view of the colorimeter is chosen to closely track the response of the human eye using an optical path configured to select and limit the field of view in a manner that is insensitive to placement of the colorimeter on the source image. The optical path from the source image to the sensor is configured to select preferred light rays while rejecting undesirable light rays to maximize the signal/noise ratio. A rearward facing sensor channel is included to simultaneously measure ambient light impinging on the source image and feedback means to provide status and/or change of information.
Abstract translation:描述了使用基于多项式的算法对诸如CRT的显示单元进行外观模型校正的方法和系统。 校正可以实时地实现,并且基于与显示相关联的伽马值。 根据本公开实现了与CIECAM02规范的强相关性。 校正功能可以使用包括具有非叠加光谱响应的多个传感器/滤波器系统的色度计来实现,该传感器/滤波器系统足以提供能够转换成标准坐标系统的数据,诸如CIE XYZ,CIE L * a * b *或 CIE Luv,以及非标准可操作的坐标系。 选择色度计的视野以使用配置成以对色度计放置在源图像上不敏感的方式选择和限制视场的光路来密切跟踪人眼的响应。 从源图像到传感器的光路被配置为选择优选的光线,同时抑制不期望的光线以使信号/噪声比最大化。 包括向后的传感器通道以同时测量照射在源图像上的环境光和反馈装置以提供信息的状态和/或变化。
Abstract:
Systems, methodologies, media, and other embodiments associated with color measuring are described. One exemplary system embodiment includes a spectrophotometer (100), one or more light sources (110) for illuminating an interior of the spectrophotometer (100), and a digital camera (105) configured at a port (125) of the spectrophotometer and being configured to measure light components from a sample (115). In the present invention, segmentation logic is provided for the spectrophotometer that is configured to employ computational image segmentation to characterize specular reflection from a sample and to characterize a selected patch or portion from the test sample, such as a selected color in a multicolor pattern. In accordance with the present invention, the spectrophotometer (100) and the included digital camera (105) may be color-characterized in situ.