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| Number | Title | Issue Date |
| 8049892 | Apparatus and method for camera-based color measurements A method includes receiving light from a material at a digital imaging device. The method also includes filtering the light into at least three spectral bands using a filter, where different regions of the filter pass different spectral bands. The method further inc... | 11/01/2011 |
| 7768645 | Miniature optical readhead and colorimeter for analysis media A miniature readhead is provided for photometric color detection using ambient light. The readhead is hand-held, including a superposed plate and tray. The tray receives sample media configured to react and to change color according to an amount of analyte in a samp... | 08/03/2010 |
| 7675621 | Two-dimensional colorimeter, and spectral sensitivity correcting method A two-dimensional colorimeter includes: an image sensing section, having an image sensor constituted of a number of pixels arranged in a two-dimensional manner, for sensing an object image to be measured to acquire a two-dimensional image; a discriminator for discri... | 03/09/2010 |
| 7659982 | Quantitative evaluation of a color filter A quantitative evaluation of a color filter (10) in accordance with the capacity of said filter to restore hues comprises the use of a numerical color appearance model. Values of a perceptive attribute are calculated for hue samples (20), by simulating... | 02/09/2010 |
| 7548316 | System and method for lead edge and trail edge sheet constraint and curl sensing A lead edge and/or trail edge sheet curl sensing and constraint method and system. First and second light emitters and detector pairs are aligned such that the light beams from the first light emitter and second light emitter cross at the transport media sheet subst... | 06/16/2009 |
| 7502112 | Colorimetric device and colour determination process A hand-held colorimetric device (101) suitable for use by blind or color-blind individuals to determine the color of a surface-under-test (SUT), for example of a fabric, has an aperture (110) which, in use, is covered by the SUT (113) whose colo... | 03/10/2009 |
| 7443508 | Spectrophotometric scanner A spectrophotometric scanner suitable for producing spectral reflectance images of surfaces of samples for a plurality of wavelength bands is disclosed. The spectrophotometric scanner comprises a scanner head for collecting spectral reflectance data, a positioning m... | 10/28/2008 |
| 7420680 | Method for designing a colorimeter having integral CIE color-matching filters A method for determining the optimal colorant thicknesses for integral CIE color-matching filters is provided. According to a computational study, a four band filter of the present invention provides a best approximation to the CIE XYZ color-matching functions with ... | 09/02/2008 |
| 7417735 | Systems and methods for measuring color and contrast in specular reflective devices Disclosed herein are systems and methods for measuring color and contrast in specular reflective devices such as interferometric modulators. To make color and contrast determinations, light reflected from a specular reflective device may be measured in-line with ill... | 08/26/2008 |
| 7369239 | Light measuring apparatus and method for measuring monochromatic light A color luminance meter 1 is provided with a polychrometer 4 as a spectral optical system including a light receiving sensor array 43, a signal processing circuit 5 and an operation control unit 6. The operation control unit 6 | 05/06/2008 |
| 7365854 | Apparatus and methods for high speed RGB color discrimination Device and method for inspecting a polychromatic region, such as a polychromatic pattern, on a moving workpiece. The method includes device includes a solid-state light source, preferably a light emitting diode, adapted to emit light in a range of wavelengths for il... | 04/29/2008 |
| 7359634 | Light color recognition for optical connection verification Optical connection verification schemes that do not cause electromagnetic interference. An all-optical connection verification scheme exploits optical coding based on a standard color scale such as RGB (red, green, blue). An RGB LED source is used to launch a three-... | 04/15/2008 |
| 7355944 | Authenticatable media and method of authenticating One method for playing a disk, comprises illuminating a first portion of the optical article with a first laser to obtain a first optical signal, wherein the first laser has a first wavelength, illuminating a second portion with a second laser to obtain a second opt... | 04/08/2008 |
| 7354448 | Dental phototherapy methods and compositions Methods for dental treatment including applying a non-toxic chromophore to a portion of the oral cavity and delivering a low dose of radiation to the chromophore during a session, the radiation having a wavelength in the absorption band of the non-toxic chromophore ... | 04/08/2008 |
| 7351245 | Apparatus and method for dislodging object from throat An apparatus for sucking out an object stuck in a person's throat, comprising hollow first and second bellows elements each having an orifice with a one-way valve and an exit valve, a tube structure comprising first and second legs having free distal ends outside th... | 04/01/2008 |
| 7342610 | Color balance adjustment of image sensed upon emitting flash light In a method of controlling an image sensing apparatus, which has an image sensing device, a flash light used to illuminate an object with light, and a shutter switch, when an image sensing instruction is issued upon depression of the shutter button, an image is sens... | 03/11/2008 |
| 7341450 | Tooth shade scan system and method A tooth shade scan system is provided that identifies tooth shades for a patient's tooth. An electronic database of tooth shade information for a shade guide may be stored. The database may include shade information based on tooth regions (e.g., the incisal, central... | 03/11/2008 |
| 7339673 | Miniature optical readhead for optical diagnostic device A miniature readhead for a photometric diagnostic instrument includes a housing of hand-held form factor, configured for receiving reagent sample media therein. The sample media has a plurality of test areas configured to react with, and change color, according to a... | 03/04/2008 |
| 7339660 | Illumination device for product examination An illumination device for use with a product inspection machine inspecting products according to at least one characteristic. The invention also pertains to an illumination device for use in sorting machines that optically sort or separate nonstandard fungible obje... | 03/04/2008 |
| 7328808 | Apparatus for sorting wood chips in separate fractions The invention relates to an apparatus for sorting wood chips, said apparatus having a feeder for supplying the wood chips onto a sloping support surface so that the chips slide along the support surface and over a slit extending across the support surface. A flow of... | 02/12/2008 |
| 7327458 | Spectral sensitivity composing system An output current from each pixel sensor can be extracted at an arbitrary ratio by a current divider. An arithmetic control unit sets the dividing ratio in correspondence to a color matching function. The current components are added together by a summing amplifier ... | 02/05/2008 |
| 7322527 | Color measurement instrument capable of both strip reading and spot reading A color measurement instrument that is capable of both spot reading and strip reading. The instrument includes a handheld unit and a docking unit. When removed from the docking unit, the handheld unit is used for spot reading. When docked in the docking unit, the ha... | 01/29/2008 |
| 7312430 | System, display apparatus and method for providing controlled illumination using internal reflection A system, display apparatus and method for providing illumination uses internal reflection to monitor and control the illumination, which is produced by light from a number of light source devices, such as light emitting diodes. Some of the light generated by the li... | 12/25/2007 |
| 7312892 | Image processing apparatus, method, and program performing chromatic and achromatic data conversion for a preferred whiteness in an image output The image processing method and apparatus perform data conversion so as to adapt a color image input from image input means to a predetermined output medium when the color image is to be output as a hardcopy by image output means to the predetermined output medium. ... | 12/25/2007 |
| 7304743 | Diffuse reflectance readhead A glucose monitoring system comprising a readhead positioned a predetermined distance from a sample aperture. The readhead comprises first and second LEDs adapted to emit intersecting paths of light. A beam splitter is positioned at the intersection of the light pat... | 12/04/2007 |
| 7304740 | Methods for detecting compression wood in lumber Methods are provided for detecting compression wood, blue stain, or pitch in lumber. A light beam is projected towards the wood sample. Line or area cameras acquire images of light that is reflected from the wood sample. Based on the intensity of the reflected light... | 12/04/2007 |
| 7304618 | Remote display for portable meter A remote display is provided for use with a portable meter, such as a portable meter used for obtaining electrical measurements. The remote display can optionally be mounted to an extremity of a user for displaying information obtained by the portable meter within a... | 12/04/2007 |
| 7294816 | LED illumination system having an intensity monitoring system A light source and method for controlling the same. The light source includes a first component light source that includes N LEDs, a photo-detector, and a collector, where N>1. Each LED has a light emitting chip in a package. The light emitting chip emits light in a... | 11/13/2007 |
| 7292949 | Method and apparatus for estimating surface moisture content of wood chips Method and apparatus for estimating surface moisture content of wood chips employing a surface moisture measurement obtained from a non-contact surface moisture sensor, which measurement is calibrated with values of a set of optical parameters, such as HSL color cam... | 11/06/2007 |
| 7277200 | Color Processing method and image processing apparatus In color matching among media having different white points or different black points, how to address gray balances among media poses a problem. To solve this problem, upon converting a colorimetric value onto a color space that connects profiles, gray-balance corre... | 10/02/2007 |
| 7270970 | Point of care diagnostic systems Systems and methods for medical diagnosis or risk assessment for a patient are provided. These systems and methods are designed to be employed at the point of care, such as in emergency rooms and operating rooms, or in any situation in which a rapid and accurate res... | 09/18/2007 |
| 7271910 | Systems and methods for compensating for temperature induced spectral emission variations in LED based color parameter measuring devices 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 LE... | 09/18/2007 |
| 7272257 | Method for determining whether photographic image is different-color-structure photographic image and photographic image processing apparatus This invention includes a different-type-light-source image determination unit for determining whether the target film image is a different-type-light-source photographic image based on RGB component data on each of pixels that constitute data on the target film ima... | 09/18/2007 |
| 7268918 | System and method for controlling metamerism The present invention provides a plurality of representations of color that are stored in an electronic color library and that can be selected by a user. After a color selection is made, a plurality of color ink formulas and/or colorant formulas capable of producing... | 09/11/2007 |
| 7267546 | Light meter for detecting and measuring intensity of two or more wavelengths of light A light meter for detecting two or more different wavelengths of light and methods for determining whether a light source configured to emit light at two or more dominant wavelengths is working properly. The inventive light meter includes a housing, two or more rece... | 09/11/2007 |
| 7265778 | Visual display characterization A method of characterizing a display having a plurality of color channels includes the steps of visually characterizing the nonlinearities of the display; determining luminance ratios of the color channels using heterochromatic photometry; determining the chromatici... | 09/04/2007 |
| 7262855 | Color measurement engine with UV filtered illumination A color measurement instrument includes a housing and illuminators, a two-dimensional photodetector array, and an optics system within the housing. A UV filter wheel closes the housing to prevent contaminants from entering the housing. The filter wheel supports UV f... | 08/28/2007 |
| 7259853 | Systems and methods for augmenting spectral range of an LED spectrophotometer An LED spectrophtometer device for determining an aspect of the color of an object may include: a visible spectrophotometer comprising a plurality of light emitting diodes that emit light in the visible spectrum onto the object; at least one detector for detecting s... | 08/21/2007 |
| 7253904 | Method and device for in-line measurement of characteristics of the surface coating of a metallurgy product To measure the characteristics of the surface coating of a moving metal strip, such as the alliation level of a coating including zinc and iron, the product is exposed to the radiation of a radiative source with a predetermined wavelength directed orthogonally to th... | 08/07/2007 |
| 7251032 | Optical monitoring system with molecular filters An optical monitoring system for determining the constituents of a sample or specimen. An absorption spectrum is obtained from a sample and is passed through one or more filters having a specified absorption spectrum defined by a single atom or a compound. If the fi... | 07/31/2007 |
