| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356405000 | Tristimulus examination | 10 |
| 20110032526 | COLOR ANALYSIS SYSTEM AND METHOD - A color analysis system includes a light source and a sensor configured to provide an output signal in response to reflected light received from the first light source. A controller receives the output signal and is configured to determine an adjustment factor based on the output signal, and determine a color based on the output signal and the adjustment factor. | 02-10-2011 |
| 20100208266 | TRISTIMULUS COLORIMETER HAVING INTEGRAL DYE FILTERS - One embodiment of a solid-state color-measuring device includes a plurality of photodetectors and a plurality of filters permanently deposited on the photodetectors, where at least one of the filters includes a single colorant layer having a transmission coefficient as a function of wavelength that descends from a maximum value between approximately 445 and 450 nm to fifteen percent of the maximum value between approximately 485 and 495 nm. | 08-19-2010 |
| 20110026028 | METHOD AND APPARATUS FOR MEASURING COLORS - A color measurement device includes an aperture for obtaining light from a color sample to be measured; a plurality of sets of color filters associated with human observer functions at different regions of color space; at least one detector for measuring the intensity of filtered light; an analog to digital converter for converting voltage signals from the at least one detector to digital values representative of tristimulus values associated with each of the sets of color filters; and a processor to combine the sets of tristimulus values in order to calculate a final set of tristimulus values, the combining being a function of at least one of the sets of tristimulus values. | 02-03-2011 |
| 20110188041 | OPTICAL CABLE WITH IDENTIFIABLE OPTICAL FIBERS - A optical fiber includes an optically transmissive element; at least one curable colored layer surrounding the optically transmissive element; and an additional removable colored layer surrounding and homogeneously covering the curable colored layer. The presence of the additional removable colored layer improves identifiability of the fiber, especially when the latter is included in an optical cable together with other fibers. | 08-04-2011 |
| 20110026027 | METHOD FOR CONVERTING DIGITAL COLOR IMAGES - A method for characterizing a color in terms of tristimulus values, the method includes providing a source of a color; measuring a set of spectral values for color stimulus associated with the color using a spectral measurement device controlled by a digital processing system; calculating a first set of tristimulus values from the set of spectral values; defining a set of human observer color matching functions, the set of human observer color matching functions being functions of the tristimulus values; and determining a second set of tristimulus values from the set of spectral values using set of human observer color matching functions. | 02-03-2011 |
| 20120062893 | MULTILAYER COLORIMETRIC SENSOR ARRAYS - Herein are disclosed methods and devices for detecting the presence of an analyte. Such methods and devices may comprise an array comprising at least two sensing elements that differ in their response to an analyte of interest. The sensing elements each comprise at least an optically responsive layer that comprises at least a highly analyte-responsive sublayer. At least one sensing element of the array further contains a minimally analyte-responsive sublayer that comprises part of the thickness of the optically responsive layer. Methods of making and using such arrays of sensing elements are also disclosed. | 03-15-2012 |
| 20120062892 | MULTILAYER COLORIMETRIC SENSORS - Herein are disclosed methods and devices for detecting the presence of an analyte. Such methods and devices may comprise at least one sensing element that comprises at least one optically responsive layer that comprises at least a highly analyte-responsive sublayer and a minimally analyte-responsive sublayer. Methods of making and using such sensing elements are also disclosed. | 03-15-2012 |
| 20120008145 | SYSTEM AND METHOD FOR CALIBRATING OPTICAL CHARACTERISTICS - A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems. | 01-12-2012 |
| 20090213379 | SKIN COLOR MATCHING METHOD AND SYSTEM - A first method for matching skin colors comprises measuring a spectral reflectance curve of an area of skin and determining a blend of pigments to match the skin's color by combining spectral reflectance curves measured for pigments to produce a calculated spectral reflectance curve corresponding to that of the skin. The pigment blend is then used, for example, to pigment a medical prosthesis, so that it matches precisely its wearer's skin. This method avoids the problem of metamerism in which colors that match under a first illumination no longer match under a second illumination. A second method uses a database of pigment blends generated by the first method. The color of an area of skin is measured and a pigment blend is selected from the database that provides a closest match. Apparatus for carrying out such color matching is also provided, together with palettes of suitable pigments for skin color matching. | 08-27-2009 |
| 20120206728 | COLOR MATCHING DEVICE AND METHOD - A color matching device including a flexible template having at least three windows extending from a front face through a back face of the template, the windows sized to allow visual comparison of colors located in the windows, wherein at least a first separation distance between first and second windows is different than a second separation distance between the second and third windows. A method for evaluating colors utilizing the device is also disclosed. | 08-16-2012 |
