With Sample Responsive To Plural Colors Applied Simultaneously Patents (Class 356/407)
  • Patent number: 10238296
    Abstract: Disclosed is a 3D scanner system for detecting and/or visualizing cariogenic regions in teeth based on fluorescence emitted from the teeth, said 3D scanner system including a data processor configured for mapping a representation of fluorescence emitted from the teeth onto the corresponding portion of a digital 3D representation of the teeth to provide a combined digital 3D representation.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: March 26, 2019
    Assignee: 3SHAPE A/S
    Inventors: Mike Van Der Poel, Karl-Josef Hollenbeck
  • Patent number: 10070791
    Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: September 11, 2018
    Assignee: Carestream Dental Technology Topco Limited
    Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
  • Patent number: 10045692
    Abstract: Systems and methods that use interference signal from a sample tissue (e.g. retina) obtained in a self-referenced manner to obtain one or more characteristics about the sample tissue, such as thickness and intensity information, are discussed in the present disclosure. One example method of analyzing the sample tissue using an interferometry system includes illuminating the sample tissue with a beam of light using a spectrally broadband source. Scattered light signal is collected from the sample tissue at a detector. The signal results from optical interference between light scattered from multiple scatterers located at different depths in the tissue. The light signal is dominated by light scattered from a scatterer located within the bulk of the tissue. One or more characteristics of the sample tissue are determined based on the collected signal.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: August 14, 2018
    Assignee: Carl Zeiss Meditec, Inc.
    Inventors: Alexandre R. Tumlinson, Paul F. Stetson
  • Patent number: 9648254
    Abstract: Provided are methods and systems for concurrent imaging at multiple wavelengths. In one aspect, a hyperspectral/multispectral imaging device includes a lens configured to receive light backscattered by an object, a plurality of photo-sensors, a plurality of bandpass filters covering respective photo-sensors, where each bandpass filter is configured to allow a different respective spectral band to pass through the filter, and a plurality of beam splitters in optical communication with the lens and the photo-sensors, where each beam splitter splits the light received by the lens into a plurality of optical paths, each path configured to direct light to a corresponding photo-sensor through the bandpass filter corresponding to the respective photo-sensor.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: May 9, 2017
    Assignee: Hypermed Imaging, Inc.
    Inventors: Mark Anthony Darty, Michael Tilleman, Peter Meenen, Dmitry Yudovsky
  • Patent number: 9625728
    Abstract: A method of spatially splitting a primary radiation beam (1) with a first radiation component (2) including an optical wavelength and a second radiation component (3) having a wavelength shorter than the first radiation component wavelength, said second radiation component (3) having a second or higher harmonic wavelength relative to the optical wavelength, comprises directing the primary radiation beam (1) onto a deflection mirror (10) having a reflective mirror surface (12) and carrying a refractive plate element (20), reflecting the first radiation component (2) at the reflective mirror surface (12) and reflecting the second radiation component (3) at an exposed plate surface (22) of the refractive plate element (20), wherein the reflected radiation components (4, 5) travel along different beam paths.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: April 18, 2017
    Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.
    Inventors: Ioachim Pupeza, Ferenc Krausz
  • Patent number: 9389171
    Abstract: The present invention relates to a device for determining the concentration of substances in fluid media.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: July 12, 2016
    Assignee: Bluepoint-Medical GmbH & Co. KG
    Inventors: Martin Degner, Nils Damaschke, Hartmut Ewald
  • Patent number: 9151674
    Abstract: Provided is a wavelength distribution measuring apparatus (24), which includes a diffuser plate (52) for dispersing light beams radiated from an object to be measured (11) and a light beam homogenizing optical element (53) for reflecting, by the side surface (53b), at least part of the light beams dispersed by the diffuser plate (52) so that the light beams approximate to the direction of the perpendicular of a light receiving surface and also for guiding the light beams to the light receiving surface, and an optical receiver (56) including a plurality of light receiving elements for detecting the light beams, the light receiving elements being different from one another in spectral sensitivity characteristic. With this configuration, substantially parallel light beams radiated from the object to be measured (11) are homogenized at the light receiving surface including the periphery of the light receiving surface.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: October 6, 2015
    Assignee: OLYMPUS CORPORATION
    Inventor: Kentaro Sekiyama
  • Patent number: 9146190
    Abstract: Apparatus for inspecting product pieces in a product stream comprising a system for creating a stream of product pieces for delivery in free flight at a viewing station, first light means for illuminating the viewing station from one side with light for reflection from product therein, second light means for illuminating the viewing station from the other side with light for reflection from product therein, a scanning system for receiving light from the first and second illuminating means reflected from product pieces in the viewing station and transmitted across the viewing station, and means for activating the first and second light means alternately in first and second scanning phases to successively illuminate a product stream at the viewing station.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: September 29, 2015
    Assignee: Buhler Sortex Ltd.
    Inventor: Anthony Hug
  • Patent number: 9041929
    Abstract: An apparatus for securing a diagnostic tool proximate to and in front of a display device between the corners thereof. A harness is adapted to releasably hold the diagnostic tool, a restraining bracket extends from the harness, and there is at least one elastic cord having a first end, an intermediate portion and a second end. The cord is threaded through the restraining bracket and is sized so as to impart elastic tension to the corners of the display device while concomitantly protecting the front surface from pressure due to the position of the harness and diagnostic tool.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: May 26, 2015
    Assignee: DATACOLOR HOLDING AG
    Inventors: Taeyoung Park, David Tobie, Shawn Clark
  • Patent number: 9001328
    Abstract: A sample information input unit obtains spectral reflectances of color patches formed on a medium from a measuring device or storage unit. A media characteristic input unit inputs bi-spectral radiance factors of the medium from the storage unit. A computing unit computes bi-spectral radiance factors of the color patches based on the spectral reflectances of the color patches obtained by the sample information input unit and the bi-spectral radiance factors of the medium input by the media characteristic input unit.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: April 7, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Atsushi Totsuka
  • Publication number: 20150041046
    Abstract: An apparatus for determining a substrate is provided, including a light emitting unit, a light receiving unit, a memory unit, and a control unit. The light emit light is configured to emit light onto one surface of the substrate. The light receiving unit is configured to receive light reflected from the one surface of the substrate, and to detect optical information. The memory unit is configured to store the optical information of the received light and a reference value. The control unit is configured to determine whether the one surface of the substrate is a first surface or a second surface of the substrate by comparing the optical information and the reference value.
    Type: Application
    Filed: December 5, 2013
    Publication date: February 12, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Taek Kim, Jung Hwa You
  • Publication number: 20140176950
    Abstract: The present technology provides a color-sensing device that includes an electrically-conductive substrate and a bulk heterojunction (BHJ) polymer layer formed on the substrate. The color-sensing device is configured to detect a first color of two colors and produce a first electrical signal that includes a first current response indicating detection of the first color. The color-sensing device is further configured to detect a second color of the two colors and produce a second electrical signal that includes a second current response indicating detection of the second color.
    Type: Application
    Filed: July 20, 2012
    Publication date: June 26, 2014
    Applicant: JAWAHARLAL NEHRU CENTRE FOR ADVANCED SCIENTIFIC RESEARCH
    Inventors: Kavassery Sureswaran Narayan, Vini Gautam, Monojit Bag
  • Patent number: 8603772
    Abstract: This invention provides a novel methods and devices for measurement of particle concentration or changes in particle concentration over a wide linear range. The invention comprises one or more radiation sources and one or more detectors contained in a housing which is interfaced to a medium containing particulate matter. The one or more radiation sources are directed into the medium, scattered or transmitted by the particulate matter, and then some portion of the radiation is detected by the one or more detectors. Methods for confining the measurement to a specific volume within the medium are described. Algorithms are provided for combining the signals generated by multiple source-detector pairs in a manner that results in a wide linear range of response to changes in particle concentration. In one embodiment the sensor provides non-invasive measurements of biomass in a bioreactor. In another embodiment an immersible probe design is described, which may be suited for one-time use.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: December 10, 2013
    Assignee: Bug Lab LLC
    Inventors: Martin P. Debreczeny, Jaime Romero, Ethan Petersen
  • Patent number: 8537360
    Abstract: A system for evaluating the susceptibility of a soybean plant to iron deficiency chlorosis is described. Soybean plants are planted in range and rows multiple micro-plots and a cart is used to pass a radiometric sensor over the micro-plots. The cart may have a sensor housing that is divided into multiple partitions with a radiometric sensor assembly positioned within each partition. Each sensor assembly generates a data signal and a computer receives and stores the data signals. The field cart is positioned above the range. The number of partitions corresponds to the number of rows in the range and each sensor assembly is positioned above a single row.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: September 17, 2013
    Assignee: Syngenta Participations AG
    Inventors: Walter Stachon, Ken Luebbert, John Gass
  • Publication number: 20130201482
    Abstract: An optical imaging system for use with an infusion tube including: at least one light source for emitting at least two of first, second, or third spectrums of light; an optics system including a single lens for receiving and transmitting at least two of the first spectrum light transmitted through a first portion of the chamber, the second spectrum light transmitted through a second portion of the chamber, or the third spectrum light transmitted through a third portion of the chamber. The system includes a sensor receiving the at least two of the spectrums from the lens and generating and transmitting data characterizing the at least two of the spectrums. The system includes a memory element storing computer readable instructions and a processor to execute the instructions to generate, using the data, at least two of first, second, or third images of the first, second, and third portions, respectively.
    Type: Application
    Filed: March 14, 2013
    Publication date: August 8, 2013
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE SA
    Inventors: BAXTER HEALTHCARE SA, BAXTER INTERNATIONAL INC.
  • Publication number: 20130169967
    Abstract: An optical reader for interrogating an optical analyte sensor includes a housing, comprising in its interior: at least one light source, a detector, and a programmable logic device. The housing has a registration feature configured to align the optical reader with an optical analyte sensor. Methods for confirming alignment of such optical readers are also disclosed.
    Type: Application
    Filed: March 29, 2011
    Publication date: July 4, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kiran S. Kanukurthy, Neal A. Rakow
  • Publication number: 20130152464
    Abstract: A sensor system for determining an optical property of a plant by means of a reflection measurement, having a first light source, which emits light along a first beam axis, and a second light source, which emits light along a second beam axis, and at least one receiver, which is aligned along a third beam axis, to detect light reflected from the plant. The first light source, the second light source, and the receiver are arranged relative to one another so that a target cylinder, which respectively extends along the first beam axis and the second beam axis, and a first measuring cylinder, which extends along the third beam axis, at least partially overlap one another in a measuring space, and the first beam axis and the second beam axis respectively enclose an angle (?, ?) with the third beam axis. Related methods are also disclosed.
    Type: Application
    Filed: February 12, 2013
    Publication date: June 20, 2013
    Applicant: FRANKE GMBH
    Inventor: FRANKE GMBH
  • Patent number: 8467452
    Abstract: A system and method for distributing candidate motion vectors divides a picture frame (110) into a plurality of segments (120), where each segment (120) includes a plurality of pixel blocks (130). The local motion complexity of each segment may then be measured by determining a Sum-of-Absolute Differences (SAD) between pixel blocks (130) of the frame (110a) and pixel blocks (130)of an adacent frame (110b) and summing the SAD values for the pixel blocks (130) within each segment (120). The maximum, minimum and average SAD value for the segments may be used to define a distribution function that distributes candidate vectors to conform with a desired maximum, minimum and average number of candidate vectors per block. This distribution function is then used to determine the number of candidate vectors to assign to pixel blocks (130) based on the measured SAD value of the associated segment (120).
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: June 18, 2013
    Assignee: Entropic Communications, Inc.
    Inventor: Erwin Bellers
  • Patent number: 8462346
    Abstract: A method for representing the structural information in a biological or physical sample is disclosed. In this method, a time-frequency representation of the spatial distribution within a sample is transformed into a color representation of the data. Furthermore, due to the directional sensitivity of the method for gathering the data, information about the structural anisotropy of the sample can also be encoded from the data. The application of this method to one or more regions within the sample enables a map to be generated which clearly illustrates quantitative measures of the structures present.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: June 11, 2013
    Assignee: Acuitas Medical Limited
    Inventors: Lance W. Farr, Timothy W. James, Jonathan N. Stearn
  • Patent number: 8446585
    Abstract: The optical assemblies disclosed herein advantageously utilize a beamsplitting apparatus in association with (i) the illumination path or (ii) the collection path of a color measurement instrument. Thus, the beamsplitting apparatus may be configured to spectrally divide one or more initial beams of light to emit a plurality of resultant beams of light, wherein the optical assembly is configured to illuminate a target using at least a first and second of the plurality of resultant beams. Alternatively, the beamsplitting apparatus may be configured to spectrally divide light received from a target to emit a plurality of resultant beams of light, wherein the optical assembly is configured to detect at least a first and second of the plurality of resultant beams of light. Advantageously, each of the first and second resultant beams is a product of a distinct set of one or more spectral constraints exacted by the beamsplitting apparatus.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: May 21, 2013
    Assignee: X-Rite, Inc.
    Inventors: Steven Henry Peterson, Harold Van Aken
  • Patent number: 8396536
    Abstract: Light is collected from a sample that is to be imaged, such as tissue or the like, and made to undergo self-interference, e.g., on a detector. An imaging system may include a low coherence light source arranged for illuminating the sample, and an interferometer arranged to receive the light collected from the sample and to pass it to a detector. The interferometer includes a beam divider that directs the radiation collected from the sample along two paths, phase-delaying one beam relative to another and then recombining the beams on a detector. A processor may be coordinated with the phase delay and in some embodiments with spatial scanning or detector array addresses, and operates on the signal from the detector to form a tomographic image of the sample illuminated tissue.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: March 12, 2013
    Inventor: Mark D. Modell
  • Patent number: 8339607
    Abstract: An apparatus and method provide measurement of a constituent of a fluid, such as ozone in ozonated water. The apparatus includes a vessel to contain the fluid, a light source configured to direct a first band of light and a second band of light along a substantially shared path though the fluid, and a photosensor that senses the first band of light and the second band of light. The constituent has a greater absorption associated with the first band of light than with the second band of light. The method includes modification of a measured attribute of the component in response to the sensed second band of light to improve the accuracy of the measured attribute.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: December 25, 2012
    Assignee: MKS Instruments, Inc.
    Inventors: Stephan Levine, Johannes Seiwert, Joachim Lohr, Ulrich Brammer, Jens Fittkau
  • Patent number: 8279441
    Abstract: A spectrophotometer includes a plurality of LEDs arranged in a circular array, each having a calibrated power input determined by the use of pulse width modulation and each having a unique wavelength band determined by the utilization of a unique fluorescent phosphor coating or lens. At least one of the LEDs comprising a phosphor-free high energy UV LED. Light reflected to the spectrophotometer is divided into predetermined wavelength ranges through the utilization of a linear variable filter and photo detectors wherein the analog signal from a photo detector is converted to a digital value through the use of auto-ranging gain technique.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: October 2, 2012
    Assignee: Mutoh Industries Ltd.
    Inventors: Chris Brown, Brian T. Pridham, John Peter Coates
  • Patent number: 8203709
    Abstract: Emitting illumination light and auxiliary light having a wavelength range different from that of the illumination light onto an observation target simultaneously, obtaining an image formed of reflection light of the illumination light and reflection light of the auxiliary light reflected from the observation target, calculating, with respect to each pixel of the obtained image signal, estimated spectroscopic data in the wavelength range of the auxiliary light using a value of the image signal and estimated matrix data in the wavelength range of the auxiliary light stored in advance, obtaining quasi reflectivity information reflecting a reflectivity of the observation target in the wavelength range of the auxiliary light based on the estimated spectroscopic data in the wavelength range of the auxiliary light, and generating a special image based on the quasi reflectivity information.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: June 19, 2012
    Assignee: Fujifilm Corporation
    Inventor: Shuichi Ishii
  • Patent number: 8199319
    Abstract: A fiber instrument for measuring properties of a fiber sample, the fiber instrument having a surface for receiving the fiber sample, a hand for pressing the fiber sample against the surface, an illumination source for selectively illuminating the fiber sample with more than one peak wavelength, where each of the peak wavelengths is independently controllable as to an applied intensity of the peak wavelength, a sensor for capturing images of the fiber sample while it is illuminated, and a controller for controlling at least the sensor and the illumination source. By providing multiple peak wavelengths of illumination that are each independently controllable as to illumination intensity, the fiber instrument as described herein is better able to detect both foreign material within the fiber sample, and color gradations of the fiber sample.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: June 12, 2012
    Assignee: Uster Technologies AG
    Inventors: Preston S. Baxter, Youe-Tsyr Chu, Hossein M. Ghorashi, Michael E. Galyon
  • Patent number: 8199324
    Abstract: The optical assemblies disclosed herein advantageously utilize a beamsplitting apparatus in association with either (i) the illumination path or (ii) the collection path of a color measurement instrument. For implementations involving the illumination path, the beamsplitting apparatus may be configured to spectrally divide one or more initial beams of light so as to emit a plurality of resultant beams of light, wherein the optical assembly is configured to illuminate a target using at least a first and a second of the plurality of resultant beams of light. Similarly, for implementations involving the collection path, the beamsplitting apparatus may be configured to spectrally divide light received from a target so as to emit a plurality of resultant beams of light, wherein the optical assembly is configured to detect at least a first and a second of the plurality of resultant beams of light.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: June 12, 2012
    Assignee: X-Rite, Inc.
    Inventors: Steven Henry Peterson, Harold VanAken
  • Patent number: 8169614
    Abstract: A recording apparatus includes a colorimeter that obtains color measurement data from a recording surface of a recording material, a colorimeter holder that holds the colorimeter, a colorimeter carriage that reciprocates the colorimeter holder on a retainer member that holds the recording material during color measurement, and a link mechanism that links the colorimeter holder and the colorimeter carriage. The colorimeter holder is linked by the link mechanism rotatably by a predetermined angle around a first axis along the reciprocating direction on the retainer member, and rotatably by a predetermined angle around a second axis along the surface of the recording material held by the retainer member and perpendicular to the reciprocating direction.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: May 1, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Wataru Onishi
  • Patent number: 8159666
    Abstract: Methods in a spectral measurement apparatus are disclosed. Light is received with a plurality of sensors. Each sensor generates an output signal having a frequency proportional to an intensity of light received by the sensor. First, second and third signals are generated each having a frequency proportional to an intensity of light received by a sensor of a wavelength or spectral band. A spectral characteristic of the received light is determined based on at least the first, second and third signals, which are are coupled to a processing element and input in parallel. The spectral characteristic is determined based on measuring a frequency or period of the at least first, second and third signals. Spectral data based on the determined spectral characteristic is generated by the processing element and displayed on a display device for perception by a viewer or transmitted to a data interface for transmission to an electronic device external to the spectral measurement apparatus.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: April 17, 2012
    Assignee: JJL Technologies LLC
    Inventors: Wayne D. Jung, Russell W. Jung, Alan R. Loudermilk
  • Publication number: 20120085932
    Abstract: A system (10) for multispectral imaging includes a first optical filter (24, 20) having at least two passbands disposed in different spatial positions on the first optical filter, a second optical filter (20, 24) having another at least two passbands, and processor (32) adapted to identify an intensity of light in the at least two passband of the second optical filter
    Type: Application
    Filed: November 15, 2011
    Publication date: April 12, 2012
    Inventor: George Themelis
  • Patent number: 8149406
    Abstract: The invention describes a method of controlling the color of the light output of a lamp (1), which method comprises electronically collecting color data pertaining to a first color (C1) to obtain a first color description (D1), electronically collecting color data pertaining to a second color (C2) to obtain a second color description (D2), and combining the first color description (D1) with the second color description (D2) to obtain a target color description (DT). The target color description (DT) is transferred to a control unit (4) of the lamp (1), and the lamp (1) is driven according to the target color description (DT) to give a target color light output. The invention also relates to a system (3) for controlling the color of the light output of a lamp.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: April 3, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Anthonie Hendrik Bergman, Steven Ferdinand Kleijer
  • Patent number: 8128873
    Abstract: A highly sensitive fluid composition analyzer where a fluid may be placed in contact with a very small area on a material sensitized to change color in the presence of a specific type of compound, to be impinged with light. The light reflected, transmitted and/or scattered by the material may serve as input for the analyzer electronics. The fluid may be pre-concentrated prior to being brought in contact with the material. The area on the material may be a spot having an outside dimension of less than one millimeter.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: March 6, 2012
    Assignee: Honeywell International Inc.
    Inventors: Ulrich Bonne, Gregg M. Swenson, Leonard A. Hilton, Tom M. Rezachek
  • Patent number: 8085401
    Abstract: An apparatus and method provide measurement of a constituent of a fluid, such as ozone in ozonated water. The apparatus includes a vessel to contain the fluid, a light source configured to direct a first band of light and a second band of light along a substantially shared path though the fluid, and a photosensor that senses the first band of light and the second band of light. The constituent has a greater absorption associated with the first band of light than with the second band of light. The method includes modification of a measured attribute of the component in response to the sensed second band of light to improve the accuracy of the measured attribute.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: December 27, 2011
    Assignee: MKS Instruments, Inc.
    Inventors: Stephan Levine, Johannes Seiwert, Joachim Lohr, Ulrich Brammer, Jens Fittkau
  • Publication number: 20110205524
    Abstract: Broadband light, for example, from a Fabry-Perot quantum cascade laser, is shone onto a sample, and spectral data concerning the broadband light reflected from the sample is collected. The spectral data is analyzed to determine information about one or more substances in the sample. For example, if the sample contains micro-organisms, such as bacteria or fungus, the biological classification(s) (e.g., species) of the micro-organisms can be determined from the spectral data. As another example, if the sample contains virus, the biological classification(s) (e.g., species) of the virus(es) can be determined from the spectral data. As yet another example, if the sample contains particles, size, location and velocity can be determined from the spectral data.
    Type: Application
    Filed: January 17, 2011
    Publication date: August 25, 2011
    Applicant: QUANTASPEC, INC.
    Inventor: Kenneth A. Puzey
  • Patent number: 7986411
    Abstract: An imaging system for imaging of a turbid medium comprises a radiation source to illuminate an object to be imaged. A detection system detects radiation from the object and includes a separation module which separates and distinguishes radiation components having respective wavelength ranges. An analysis module forms a comparison of respective radiation components. An image dataset is reconstructed on the basis of the comparison of respective radiation components. The comparison may involve the ratio of the levels of the high-wavelength radiation component to the low-wavelength radiation component, the relative difference of the levels of high-wavelength radiation component to the detected radiation, and the relative difference of the levels of the high-wavelength radiation component to the low-wavelength radiation component.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: July 26, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Ronny Ziegler, Tim Nielsen
  • Patent number: 7929151
    Abstract: An apparatus for obtaining images of a tooth comprises at least one image sensor disposed along an optical axis to take polarized reflectance image and fluorescence image, at least one broadband illumination apparatus for reflectance imaging, and a narrow-band ultraviolet illumination apparatus for fluorescence imaging. In order to remove the specular reflection, one or more polarization elements are disposed along the optical axis. A filter is disposed along the optical axis to block narrow-band ultraviolet light, and a switch for selecting one of the operation modes.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: April 19, 2011
    Assignee: Carestream Health, Inc.
    Inventors: Rongguang Liang, Jean-Marc Inglese
  • Patent number: 7903251
    Abstract: A method for representing the structural information in a biological or physical sample is disclosed. In this method, a time-frequency representation of the spatial distribution within a sample is transformed into a color representation of the data. Furthermore, due to the directional sensitivity of the method for gathering the data, information about the structural anisotropy of the sample can also be encoded from the data. The application of this method to one or more regions within the sample enables a map to be generated which clearly illustrates quantitative measures of the structures present.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: March 8, 2011
    Assignee: Acuitas Medical Limited
    Inventors: Lance W. Farr, Timothy W. James, Jonathan N. Stearn
  • Patent number: 7898664
    Abstract: A method measures chromaticity values using a colorimeter to solve the drawbacks of conventional technologies, such as an inaccurate illuminant, the filter of color-matching function being difficult to be deposited and manufactured within a filter mod colorimeter, and using an expensive spectrometer within a spectrum mode colorimeter. The spectrometer and the filter of color-matching function is not needed, and an accurate chromaticity value of an object by using a multi-band illuminant illuminating the object and a power meter. Further, the multi-band illuminant can adjust the illumination condition of a standard illuminator under different color temperatures, and the chromaticity values of the object can be measured under different color temperatures. The accuracy of the measured chromaticity values is up to the level of the spectrum mode colorimeter, and the price is less than the spectrum mode colorimeter.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: March 1, 2011
    Assignee: National Central University
    Inventors: Tsung-Hsun Yang, Wei-Ping Lin
  • Patent number: 7876441
    Abstract: A control station for a printing press, includes at least one true color monitor for displaying at least one soft proof serving as a color reference for printed copies printed during the printing process, and at least one standard light source for at least partial illuminating the control station to allow visual comparison, independent of room lighting, of a printed copy with the soft proof serving as the color reference. The luminosity produced by the at least one standard light source is variable, so that the luminosity produced by the at least one standard light source can be adjusted to match a brightness achievable on the true color monitor to match a contrast achievable on the true color monitor during the display of the soft proof.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: January 25, 2011
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Florian Fejfar
  • Patent number: 7859668
    Abstract: A method includes generating at least one first light beam and generating at least one second light beam and at least one third light beam using the at least one first light beam. The at least one first light beam has a plurality of first regions, the at least one second light beam has a plurality of second regions, and the at least one third light beam has a plurality of third regions. Each of the first, second, and third light beams has at least two regions that are spectrally different. The method also includes measuring a spectrum in each of a plurality of first wavelength bands for each of the second regions. The method further includes illuminating at least part of an object with the at least one third light beam to produce at least one fourth light beam. The at least one fourth light beam has a plurality of fourth regions, where at least two of the fourth regions are spectrally different.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: December 28, 2010
    Assignee: Honeywell International Inc.
    Inventors: John F. Shakespeare, Tarja T. Shakespeare
  • Patent number: 7851722
    Abstract: An optical cracked-grain selector that does not mistakenly identify normal grains of rice having no cracks as cracked grains due to the presence of the embryonic portion and/or surface scratches when optically identifying cracked grains of rice mixed in with material rice grains. An identification part in a cracked grain identification unit obtains a first rice grain image (having an embryonic portion and scratches) based on light passed through the rice grain that is received by a first CCD sensor built into a CCD camera of a photoreaction detection unit and a second rice grain image (having cracks, an embryo portion and scratches) based on light passed through the rice grain received by a second CCD sensor built into the CCD camera, acquires an image of the cracks by calculating a difference in the amount of light between the two rice grain images, and identifies a cracked grain.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: December 14, 2010
    Assignee: Satake Corporation
    Inventors: Takafumi Ito, Masazumi Hara, Masahiro Egi, Takahiro Doi
  • Patent number: 7821639
    Abstract: A scanner device includes a color measuring, a support surface for a measured object and a drive unit for moving the measuring head across the support surface and for adjusting the height of the measuring head in a direction perpendicular to the support surface. The measuring head is equipped with an illuminating channel and a collection channel. The illuminating channel has a light source and optical means for illuminating the measured object at a measurement site at a mean angle of incidence of 45°. The collection channel has optical means for capturing light emanating from the measured object at the measurement site at a mean collection angle of 0° and coupling it into a light guide, which directs the captured light to a wavelength-selective photoelectric transformer, which resolves it into a number of wavelength ranges and generates an electric measurement signal corresponding to each wavelength range.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 26, 2010
    Assignee: X-Rite Europe GmbH
    Inventors: Peter Ehbets, Adrian Kohlbrenner
  • Patent number: 7804597
    Abstract: A method for matching colour properties and texture properties of a repair paint to colour properties and texture properties of a paint film on a substrate to be repaired is provided. In the method, the texture of the paint film is imaged with a digital imaging device, the imaged texture is analyzed using image analysis software, texture data is calculated, and the repair paint is formulated on the basis of the concentrations of paint modules, wherein each paint module is associated to specified texture data and colour data.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: September 28, 2010
    Assignee: AKZO Nobel Coatings International B.V.
    Inventors: Klaas Hendrik De Haas, Swie Lan Njo, Eric Jacob Jan Kirchner, Roelof Johannes Baptist Gottenbos
  • Patent number: 7787121
    Abstract: An imaging apparatus includes a light source unit that selectively outputs white light and light in a different wavelength band to an observation target, an imaging unit including an imaging device, and a spectral image formation circuit that generates a spectral image signal for a specified wavelength by an operation using an image signal based on an output from the imaging unit and predetermined matrix data. The imaging unit selectively obtains an image of the observation target for each of first, second and third light components in a visible light region and an image for each of at least fourth and fifth light components in a near-infrared region. Further, the imaging unit includes first spectral devices that make only the first and fourth light components enter first pixels of the imaging device and second spectral devices that make only the second and fifth light components enter second pixels thereof.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: August 31, 2010
    Assignees: FUJIFILM Corporation, Fujinon Corporation
    Inventors: Kazuhiro Tsujita, Hiroshi Sunagawa, Katsuya Kikuchi, Tetsuya Kawanishi
  • Publication number: 20100201986
    Abstract: The invention relates to a device for measuring dental shade comprising: —illumination means (24, 40, 42, 44, 48, 50), for successively illuminating at least one part of a tooth (D) with light of various spectral ranges, —at least one sensor (26) sensitive to light coming from said tooth part, in response to the illumination, to generate for each different color of illumination, at least one measurement signal, —means (30, 32) for converting the measurement signals corresponding to said tooth part, into the coordinates of a measurement point (202), in a shade space in which “reference” points (320, 410, 540) are also defined, corresponding to the preset shades of a dental shade guide, and—search means (114), for the tooth part, for a shade corresponding to the reference point closest to the measurement point, in the shade space.
    Type: Application
    Filed: February 7, 2005
    Publication date: August 12, 2010
    Inventors: Jean-Marc Inglese, Anne Groguenec, Julien Barneoud
  • Patent number: 7773222
    Abstract: A system and method for full width scanning color analysis of a printed media sheet are disclosed. The full width array spectrophotometer system includes one or more substantially linear elongated illumination arrays of closely spaced multiple illumination sources. The sources include sets of illumination sources, including a first set of different color illumination sources and a second set including one or more UV-emitting illumination sources. The sets are arranged to span a printer paper path or other object path to illuminate a band extending transversely across a printed print media sheet or other object moving in the path. A full width array light imaging sensor includes an elongated array of multiple closely spaced photodetectors for detecting plural colors and is positioned adjacent to and extending substantially parallel to the linear array(s) to receive radiation reflected from the transverse illuminated band.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventor: Lalit Keshav Mestha
  • Patent number: 7768645
    Abstract: 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 sample. The plate is optically transmissive, so that ambient light is transmissible therethrough to the sample media indexed within the tray. An array of light detectors is disposed along the plate, including sets of detectors configured to detect light of at least three mutually distinct wavelengths reflected from the test areas. Light shields superposed with each of the light detectors selectively permit ambient light to pass to the tray, while substantially preventing ambient light from reaching the light detectors prior to reflecting from the test areas. The readhead may be incorporated into a photometric diagnostic instrument configured to analyze the reflections and derive a diagnosis value.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: August 3, 2010
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventor: Juan F. Roman
  • Patent number: 7755762
    Abstract: A method of improving an initial color filter comprises a numerical generation of sinusoidal spectra. Two steps of selecting said spectra are then executed. The first selection is carried out according to a criterion of colorimetric similitude with respect to the initial filter. The second selection is carried out according to the capacity of dummy filters corresponding to each spectrum to restore hues in a natural manner. To do this, observations of samples of hues through each dummy filter are simulated numerically, using a color appearance model to take account of a visual perception of a human observer. In this way, an improved filter is determined, which has a color close to that of the initial filter and which affords a natural rendition of hues.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: July 13, 2010
    Assignees: Essilor International (Compagnie Generale d'Optique), Centre National de la Recherche Scientifique-CNRS
    Inventors: Gilles Baillet, Bernard Bourdoncle, Margalith Harrar, Françoise Vienot
  • Patent number: 7746474
    Abstract: A color identifying device includes a mount block, a color detector, a lens and a color identifier. A reactive board having a plurality of surfaces to be measured in respective predetermined positions is mounted in the mount block. The color detector has a plurality of color measuring areas corresponding respectively to the reaction surfaces of the reactive board mounted in the mount block. The lens forms images of the surfaces of the reactive board mounted in the mount block on the respective color measuring areas. The color identifier identifies the colors of the surfaces based on output signals from the corresponding color measuring areas.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: June 29, 2010
    Assignee: NEC Corporation
    Inventor: Naoki Oda
  • Patent number: 7733489
    Abstract: The color difference and/or chromaticness difference between target objects and background objects can be enhanced. Different colors with different color attributes mean different objects. In some cases, different chromaticness, such as saturation and hue, mean different two- or three-band ratio. The light from the surface of objects is filtered by optical system integrated with two- and three-band mixing method so that only the light in the wavelength range of the pass bands can reach optical sensors for opto-electronic sensing devices. With this kind of opto-electronic sensing devices, two- and/or three-band ratio criteria widely used in remote sensing and machine vision applications can be calculated in terms of color attributes. Multi-spectral imaging system can be replaced by this kind of sensing devices. This kind of two- or three-band mixing illumination can be used to identify, classify, and detect objects for human visual application, remote sensing, and machine vision application.
    Type: Grant
    Filed: September 10, 2006
    Date of Patent: June 8, 2010
    Inventor: Fujian Ding
  • Patent number: 7720526
    Abstract: Light from a tissue sample undergoes self-interference on a detector. A low coherence light source may illuminate the sample, and an interferometer receives light from the sample, divides and directs the received light along two paths, phase-delaying one and recombining the beams on a detector to form a signal. A processor coordinated with the phase delay and optionally with spatial scanning or detector array addresses, converts the signal to a tomographic image. Using self-interfering radiation from the sample, rather than interference of a reference source and a return signal, permits imaging with light naturally emitted by the sample, or with wavelength-shifted, delayed or induced light signals, allowing new diagnostic imaging modalities. The processor may create images in registry from different (for example, close but separable) wavelengths. Systems may also operate without an illumination source or may apply other stimuli to evoke emission from the sample.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: May 18, 2010
    Inventor: Mark D. Modell