Tristimulus Examination Patents (Class 356/405)
  • Patent number: 10356284
    Abstract: An input chromaticity data calculation unit 113 calculates input chromaticity data rg from device-dependent color data RGB. A chromaticity data transformation unit 114 transforms the input chromaticity data rg into output chromaticity data xy by referring to an LUT stored by an LUT storage unit 13. A total amount calculation unit 115 refers to the LUT of the LUT storage unit 13 to calculate a total amount ??XYZ of the device-independent color data XYZ from the color data RGB. An output color data calculation unit 116 uses the total amount ??XYZ to calculate color data XYZ from the output chromaticity data xy.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: July 16, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kosei Takahashi
  • Patent number: 10326982
    Abstract: A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 18, 2019
    Assignee: 3SHAPE A/S
    Inventors: Rune Fisker, Henrik Ôjelund, Rasmus Kjær, Mike van der Poel, Arish A. Qazi, Karl-Josef Hollenbeck
  • Patent number: 10159548
    Abstract: An optical sensor for an instrument to form a closed-loop curing instrument that is configured to manage the quantity of delivered energy to a curable material, including a composite restoration for a tooth. The closed-loop curing instrument is configured to analyze a signal indicative of the light reflecting from the curable material, and to adjust light output based on the analysis.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: December 25, 2018
    Assignee: Garrison Dental Solutions, L.L.C.
    Inventor: Steven H. Peterson
  • Patent number: 10152494
    Abstract: The invention relates to a computer implemented process for matching a paint to the visual appearance properties of a painted substrate surface comprising the steps of a) selecting a potentially matching first candidate paint based on a first paint recipe comprising one or more color and/or effect imparting toners, b) applying the first candidate paint to a test panel to obtain a first painted test panel c) visually comparing the appearance properties of the painted substrate surface and the first painted test panel under more than one viewing angle, wherein the visual comparison comprises c1) selecting a visual appearance category wherein the appearance of the painted test panel most prominently deviates from the painted substrate, wherein the categories are selected from a number of pre-defined visual appearance categories displayed on an output device of a computer, c2) inputting the selected visual appearance category in an input device of the computer, c3) visually determining the visual appearance diffe
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: December 11, 2018
    Assignee: AKXO NOBEL COATINGS INTERNATIONAL B.V.
    Inventors: Tom Thomas, Raviraj Rajachandran, Jyotsna Ravi
  • Patent number: 10145983
    Abstract: A vibration monitoring system includes an acoustic device that outputs an analog signal to a fiber cable for calibration and location verification. The acoustic device utilizes GPS or communication from wayside bungalow equipment to verify GPS location or real-time clock information. The wayside bungalow contains communication equipment that interfaces with the acoustic device and relays health information to a sensing processor. The sensing processor is configured to detect the acoustic signal output by the acoustic device at a known location and verifies that the cable and device have not moved location by comparing the signal level received against a threshold stored in memory. When the threshold is exceeded, the sensing processor sends an alert that the fiber optic cable or acoustic device at the location have changed.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: December 4, 2018
    Assignee: Alstom Transport Technologies
    Inventors: Nicholas David Nagrodsky, James Michael Kiss, Jr., Jeffrey Michael Fries, Derick Diaz, David Farmer
  • Patent number: 9905027
    Abstract: A method that includes obtaining, using a processor, image data from a target coating. The method also includes performing, using the processor, an image analysis to determine at least one sparkle point from the image data, and performing, using the processor, a hue analysis to determine a sparkle color from the sparkle point. The method further includes calculating, using the processor, a sparkle color distribution, and generating, using the processor, a coating formulation that is the same or substantially similar in appearance to the target coating.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: February 27, 2018
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Paul M. Beymore, A'Lisa Marie Krawciw
  • Patent number: 9687330
    Abstract: A dental measuring device for three-dimensional measurement of a patient's teeth having projection means with a projection unit 8 to project a measuring structure onto a tooth to be examined. The device also has a camera to capture a measuring structure projected onto the tooth. According to the present invention, the projection unit has at least one UV light source, wherein the power output from the UV light source is selected or can be selected such that light-curing dental materials can be cured by the effect of the UV light, in such a way that the device can be used or is used for curing light-curing dental materials.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: June 27, 2017
    Assignee: Qioptiq Photonics GmbH & Co. KG
    Inventors: Helmut Rauscher, Ulrich Partheymüller
  • Patent number: 9677942
    Abstract: A system and method is provided for measuring and storing the paint color formula of a sample. Paint is sprayed on directional samples. The horizontal standard is measured and stored in a database. A vertical standard is measured at a plurality of locations and orientations and stored in the database.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: June 13, 2017
    Assignee: AXALTA COATING SYSTEMS IP CO. LLC
    Inventor: Larry E. Steenhoek
  • Patent number: 9638575
    Abstract: A measuring apparatus and a measuring method are provided. The measuring apparatus includes an optical system to condense light, a light receiving device to receive light condensed by the optical system at a plurality of light receiving positions and convert the light into an electric signal, a plurality of optical band-pass filters arranged near a lens stop of the optical system, each of the optical band-pass filters having a different spectral transmittance, a lens array arranged between the optical system and the light receiving device, the lens array having a plurality of lenses each of which is arranged substantially in parallel with a two-dimensional surface of the light receiving device, and a correction unit to correct the electric signal for each one of the plurality of light receiving positions of the light receiving device. The measuring method is performed by the measuring apparatus.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 2, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Yamanaka, Go Maruyama, Kensuke Masuda, Sho Nagai
  • Patent number: 9606304
    Abstract: Described is a light emitting diode (LED) high radiance illumination system that includes at least one LED die and a tapered collection optic. An aperture in a reflective surface at the output end of the tapered collection optic recovers light is configured to emit light to an adjacent optical fiber bundle. The reflective surface surrounding the aperture reflects light back through the tapered collection optic, resulting in increased radiance. The system provides uniform high intensity in near and far fields and is suitable for applications including surgical and microscopy illumination with high color rendering index, and stable and adjustable intensity and correlated color rendering. Illumination can include one or more colors, including white light. The system has improved thermal and optical performance and is generally more compact and lower in cost relative to conventional systems.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: March 28, 2017
    Assignee: Innovations In Optics, Inc.
    Inventor: Thomas John Brukilacchio
  • Patent number: 9607403
    Abstract: A method that includes obtaining, using a processor, image data from a target coating. The method also includes performing, using the processor, an image analysis to determine at least one sparkle point from the image data, and performing, using the processor, a hue analysis to determine a sparkle color from the sparkle point. The method further includes calculating, using the processor, a sparkle color distribution, and generating, using the processor, a coating formulation that is the same or substantially similar in appearance to the target coating.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: March 28, 2017
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Paul M. Beymore, A'Lisa Marie Krawciw
  • Patent number: 9599533
    Abstract: An example of an optical accessory configured to produce an optical image depicting spectral characteristics of light. The produced optical image is captured by an image capture sensor of a mobile device. The captured image is processed by the mobile device to produce a measured value corresponding to a lighting-related parameter.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: March 21, 2017
    Assignee: ABL IP HOLDING LLC
    Inventors: Januk Aggarwal, Jack C. Rains, Jr., David P. Ramer
  • Patent number: 9513170
    Abstract: A spectral color sensor including a spectroscopic unit that disperses reflected light from a measurement target, and a light detection element that detects the dispersed light from the reflected light, comprises: a storage unit that stores a correspondence relationship between a pre-measured wavelength of the dispersed light projected on the light detection element and a projection position, as well as a stray light component; a first correction unit that, based on a measurement result when a color is measured, corrects the correspondence relationship between the wavelength of the dispersed light projected on the light detection element and the projection position stored in the storage unit; and a second correction unit that carry out wavelength correction on the stray light component stored in the storage unit using the corrected correspondence relationship between the wavelength and the projection position.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: December 6, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Kita, Shun-ichi Ebihara
  • Patent number: 9250179
    Abstract: The present invention relates to a method for the characterization of pigments and fillers in which the luminance of a pigmented transparent medium is determined against a dark background. This measurement method is particularly suitable for determining the optical properties of cosmetic fillers.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: February 2, 2016
    Assignee: Merck Patent GmbH
    Inventors: Christoph Schmidt, Christoph Hoffmann, Sabine Schoen
  • Patent number: 9247611
    Abstract: There are provided systems, devices and methods for operating a light source with a light sensor to provide a desired light output. In particular, in one embodiment, there is provided a light control system. The light control system includes a light source and a light sensor that share a common light pathway. Additionally, the light control system includes a controller electrically coupled to the light source and the light sensor. The controller operates the light source and the light sensor alternatively during a periodic cycle having a frequency of approximately 60 Hz or greater to achieve a desired visual effect based on ambient lighting conditions.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: January 26, 2016
    Assignee: Apple Inc.
    Inventors: Aleksandar Pance, Duncan Kerr, Brett Bilbrey, Brandon Dean Slack
  • Patent number: 9223053
    Abstract: Provided is an object detection apparatus using a general camera sensor for adjusting detection sensitivity to an object (pedestrian or animal) even in an urban area in which the scattered reflection of a light source is severe. The object detection apparatus overcomes the limitations of a related art object detection apparatus using a thermal imaging camera which is incapable of adjusting detection sensitivity to an obstacle (pedestrian or animal) in an urban area in which the scattered reflection of a light source is severe.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: December 29, 2015
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Sung Jin Seo
  • Patent number: 9217671
    Abstract: The invention describes a light sensor (1) comprising a filter arrangement (11), which filter arrangement (11) comprises a number of spectral filters (F1, F2, . . . , Fn) for filtering incident light (L), wherein a spectral filter (F1, F2, . . . , Fn) is realized to pass a distinct component of the incident light (L), an aperture arrangement (12) for admitting a fraction of the incident light (L), and a sensor arrangement (13) realized to collect the admitted filtered light (L?), which sensor arrangement (13) comprises an array of sensor elements (130) for generating image-related signals (S, S1, S2, . . . , Sn) and which sensor array is sub-divided into a number of regions (R1, R2, . . . , Rn), wherein a region (R1, R2, . . . , Rn) of the sensor array is allocated to a corresponding spectral filter (Fi, F2, . . . , Fn) such that an image-related signal (S) generated by a sensor element (130) of a particular region (R1, R2, . . .
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: December 22, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Hendrikus Hubertus Petrus Gommans, Marcellinus Petrus Carolus Michael Krijn, Hugo Johan Cornelissen
  • Patent number: 9200999
    Abstract: A system and method of characterizing a color variation of a surface includes a device having a light source and a plurality of sensors positioned at respective viewing angles. An algorithm is stored on and executable by a controller to cause the controller to direct a beam of light at the measurement location with the light source and measure the light leaving the measurement location with the sensors at a plurality of azimuth angles to obtain respective measured color values. The controller is configured to define a color vector function F(?, ?) to represent the color variation of the surface. The controller is configured to determine the color vector function F(?, ?) based at least partially on the respective measured color values. The system allows for a representation of color space of a surface at any azimuth and viewing angle.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: December 1, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Hua-Tzu Fan, Samuel Lute
  • Patent number: 9198109
    Abstract: A system for channel handover includes a mobile radio device and a server storing polygon operating area information for a plurality of overlapping polygon operating areas for wireless communication. The mobile radio device receives the polygon operating area information, and determines the device location. Based on the polygon operating area information, the mobile radio device selects a first channel of operation corresponding to a channel that is available for use within a first polygon operating area. The travel of the mobile radio device is tracked to determine when the mobile radio device has exited the first polygon operating area and entered a second polygon operating area. When this occurs, the device selects a second channel of operation corresponding to a channel that is available for use within the second polygon operating area. Alternatively, the channel selection may be determined by the server and transmitted to the mobile radio device.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: November 24, 2015
    Assignee: Spectrum Bridge, Inc.
    Inventors: Jeffrey C. Schmidt, Larry Koos, William Koos, Peter Stanforth
  • Patent number: 9189703
    Abstract: Systems, devices, and methods for generating signatures for an image obtain an image, estimate a spectral image of the obtained image, calculate one or both of a detection component of the image and a residual component of the image, wherein the detection component of the image is based on the spectral image, a spectral-power distribution for a specific illuminant, and spectral sensitivities of a detector, and wherein calculating the residual component of the image is based on the spectral image, the spectral power distribution for the specific illuminant, and the spectral sensitivities of the detector or, alternatively, based on the spectral image and the calculated detection component, and generate an image signature based on one or both of the detection component and the residual component.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: November 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Francisco Imai
  • Patent number: 9169399
    Abstract: The invention provides a method of characterizing a scattering colored pigment for use in the determination of the absorption and scattering coefficients of the scattering colored pigment, the method comprising the step of obtaining a reflectance spectrum of a mixture of the scattering colored pigment with a substantially non-absorbing scattering pigment at a plurality of different volume fractions wherein the substantially non-absorbing scattering pigment has a particle size greater than 0.6 micron. Also provided is a pigment characterization system adapted to perform the method of the invention to characterize a scattering colored pigment.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: October 27, 2015
    Assignee: TIOXIDE EUROPE LIMITED
    Inventors: John Lalande Edwards, Karl Lowry, Emily Ruth Parnham, Sean Oliver Edward Reid, John Robb, Rebecca Louise Tonkin
  • Patent number: 9164368
    Abstract: A method for projecting a 3-D viewable image onto a display surface, comprising the steps of, providing two or more projection systems; arranging the two or more projection systems into a first group and second group, wherein the first group and second group each comprise one or more projection systems; arranging the first and second group of projection systems such that each group of project systems can project an image on a display surface and configuring the first and second group of projection systems such that the first and second group of projection systems alternately project onto the display surface.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 20, 2015
    Assignee: INTEL CORPORATION
    Inventors: Lucio Kilcher, Nicolas Abele
  • Patent number: 9157867
    Abstract: A lighting dome that can be used to inspect semiconductor wafers includes a small aperture, and can include backlighting, a reflectance gradient and/or a broad spectrum light source. A pin hole lens is aligned with the small aperture.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 13, 2015
    Assignee: GRAFTEK IMAGING INC.
    Inventors: Romik Chatterjee, Robert Martin Eastlund, Christopher Jan Koci, Archer Forrest Finley
  • Patent number: 9110028
    Abstract: A Sorbent media exhaustion indicator produces color change when the sorbent media is saturated. The indicator's fluid inlet attach to the fluid outlet of a sorbent media device such as filter. It includes is a hollow tube or a hollow polyhedron prism that fluids flow freely through it. The indicator also includes colorimetric sensor that changes color when exposed to trace amount of toxic fluids and a trap member that prevent toxic fluids exist in the surrounding environment from changing the color of the colorimetric sensor, hence preventing false indication of sorbent media exhaustion. Another function of the trap member is to trap toxic fluids from exiting to the surrounding environment when toxic fluids breakthrough the sorbent media device.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: August 18, 2015
    Inventors: Kirollos Salama Kirollos, Michael Kirollos Kirollos
  • Patent number: 8947667
    Abstract: The spectrophotometer of the present invention measures a spectral reflectance of an object to be measured to thereby determine a color value of the object to be measured based on a color-matching function of an XYZ color system and the spectral reflectance. The spectrophotometer includes an irradiation unit configured to irradiate the object to be measured with light having a spectral intensity distribution in which a relative intensity at a wavelength at which the value of z reaches its peak in the color-matching function is equal to or greater than 0.5.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: February 3, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Kawanago
  • Publication number: 20150009501
    Abstract: The present invention discloses a method for measuring absolute value of non-linear error and an apparatus thereof. The method comprises: placing N reflecting plates jointed together at the sample port of the optical measuring instrument at the same time, wherein each of reflecting plate has a same covering area at the sample port; placing an aperture along light paths of the optical measuring instrument; adjusting the number of reflecting plates as used according to a position in the measuring range of the optical measuring instrument where the non-linear error is required to be measured; following every adjustment, acquiring the output results when the adjusted reflecting plates are placed at the sample port; performing a computation processing for non-linear error to the output results; and acquiring the non-linear error of the output results of the optical measuring instrument.
    Type: Application
    Filed: January 28, 2014
    Publication date: January 8, 2015
    Applicant: NATIONAL INSTITUTE OF METROLOGY, P.R.CHINA
    Inventor: Ruoduan Sun
  • Patent number: 8917394
    Abstract: In a color imaging system, multiple rendering devices are provided at different nodes along a network. Each rendering device has a color measurement instrument for calibrating the color presented by the rendering device. A rendering device may be a printer in which the measuring of color samples on a sheet rendered by the printer is provided by a sensor coupled to a transport mechanism which moves the sensor and sheet relative to each other, where the sensor provides light from the samples to a spectrograph. A rendering device may also be a display having a member supporting a color measuring instrument for receiving light from an area of the screen. The color measuring instruments provide for non-contact measurements of color samples rendered on a display or a sheet, and are self-calibrating by the use of calibration references.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 23, 2014
    Assignee: RAH Color Technologies LLC
    Inventor: Richard A. Holub
  • Publication number: 20140354697
    Abstract: This disclosure provides systems, methods and apparatus for calibration of analog display elements such as analog interferometric modulators (IMODs). In one aspect, display devices include both a light-turning layer and integrated color sensor in order to provide feedback on the operation of the display. In particular, the integrated color sensors can be used to determine a relative shift in a color signal output by an analog display element.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventor: Denis H Endisch
  • Patent number: 8871148
    Abstract: 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.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: October 28, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Michael S. Wendland, Neal A. Rakow
  • Patent number: 8803537
    Abstract: A method for conditioning a photovoltaic module for testing includes setting an effective irradiance of a continuous light source at a target plane, configuring a test photovoltaic module to operate at a substantially maximum power point configuration, positioning the test photovoltaic module adjacent to the target plane, and configuring the test photovoltaic module for testing by removing the light source, cooling the test module to a testing temperature, and reversing the substantially maximum power point configuration.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: August 12, 2014
    Assignee: First Solar, Inc.
    Inventors: Pat Buehler, Sumanth Varma Lokanath, Madhu Sayala, Christinia Snider, Jim Sorensen, Paul Wolffersdorff
  • Patent number: 8760655
    Abstract: A method is disclosed for inspecting a mold which has a porous alumina layer over its surface. The method includes providing, based on a relationship between a first parameter indicative of a thickness of the porous alumina layer and a color parameter indicative of a color of reflected light from the porous alumina layer, first color information which represents a tolerance of the first parameter of a porous alumina layer which has an uneven structure that is within a tolerance; providing a mold which is an inspection subject, the mold having a porous alumina layer over its surface; obtaining a color parameter which is indicative of a color of reflected light from the porous alumina layer of the inspection subject mold; and determining a suitability of the first parameter of the inspection subject mold based on the obtained color parameter and the first color information.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: June 24, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hidekazu Hayashi, Takao Imaoku
  • Publication number: 20140152990
    Abstract: A hand-held measurement device for appearance analyses includes a measurement array which comprises a number of illumination means for applying illumination light to a measurement field in at least three illumination directions and a number of pick-up means for capturing the measurement light in at least one observation direction. The illumination directions and the observation directions lie in a common system plane. At least one pick-up means is embodied to spectrally gauge the measurement light in a locally integral way, and at least one imaging pick-up means is embodied to gauge the measurement light in terms of colour in a locally resolved way. The spectral pick-up means and the locally resolving pick-up means are arranged such that they receive the measurement light reflected by the measurement field under the same observation conditions and in particular from the same observation direction.
    Type: Application
    Filed: October 30, 2013
    Publication date: June 5, 2014
    Applicant: X-RITE EUROPE GMBH
    Inventors: Peter Ehbets, Beat Frick, Mark Wegmuller, Jorg Hunkemeier, Guido Niederer
  • Publication number: 20140146318
    Abstract: An illumination apparatus for optimal vision provided in the present invention includes an illumination module, a sensing module, and a computing module. The illumination module is utilized to generate an illuminating light with a plurality of different color temperatures for sequentially illuminating the illuminated object. The sensing module is utilized to sense a reflected light form the illuminated object. The computing module is utilized to calculate a saturation, chorma, and brightness of the illuminated object under the illuminating light by each color temperature, so as to obtain a plurality of preferred values corresponding to the color temperatures of the illuminating light, and for controlling the illumination module to illuminate by the illuminating light with the color temperature corresponding to a maximum among the preferred values. An illumination apparatus for optimal vision is further disclosed.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 29, 2014
    Applicant: National Taiwan University of Science and Technology
    Inventors: Neng-Chung HU, Chin-Chuan WU
  • Patent number: 8692996
    Abstract: A system and method for determining a state of a traffic signal. In one embodiment, a traffic signal state detector includes a lens, a color sensor, and a processor. The color sensor is configured to identify a plurality of colors of light directed to the color sensor by the lens, and a field of view of the color sensor is restricted based on dimensions of a traffic signal. The processor is coupled to the color sensor. The processor is configured to determine a color of light emitted by the traffic signal based on the colors of light identified by the color sensor.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: April 8, 2014
    Assignee: Mesa Engineering, Inc.
    Inventor: Clint A. Davis
  • 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: 8548236
    Abstract: A method for matching colors including comparing the appearance of a first white color associated with a first color imaging system and a second white color associated with a second color imaging system, wherein the tristimulus values of the first and second white color are similar; determining a fixed correction to the tristimulus values of the second white color to achieve a visual match to the first white color; measuring a first set of spectral values for a first color associated with the first color imaging system; determining a first set of tristimulus values from the first set of spectral values; measuring a second set of spectral values for a second color associated with the second color imaging system; determining a second set of tristimulus values from the second set of spectral values; applying a correction to the tristimulus values of the second color; determining a difference between the tristimulus value of the first color and the corrected tristimulus value of the second color; and adjusting th
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: October 1, 2013
    Assignee: Eastman Kodak Company
    Inventor: Christopher J. Edge
  • Patent number: 8537358
    Abstract: 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.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: September 17, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Neal A. Rakow, Michael S. Wendland
  • 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: 8422017
    Abstract: 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.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: April 16, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Melanie M. Gottwals, Jeffrey M. DiCarlo, Nathan Moroney, Glen E. Montgomery, Steven W. Trovinger
  • Patent number: 8407014
    Abstract: The present invention is directed to a method for automatic selection of colorants and flakes to produce one or more matching formulas to match color and appearance of a target coating containing flakes. The present invention is further directed to a system for automatic selection of colorants and flakes for producing one or more matching formulas to match color and appearance of a target coating.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: March 26, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Arun Prakash, Judith Elaine Obetz
  • Patent number: 8373857
    Abstract: 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.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: February 12, 2013
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Wayne D. Jung, Russell W. Jung, Walter W. Sloan, Alan R. Loudermilk
  • Patent number: 8374831
    Abstract: A computer-implemented process for generating a bidirectional reflectance distribution function (BRDF) of a gonioapparent material containing effect flake pigments in a solid medium using limited measurement data, comprising the following steps: (A) acquiring and inputting into a computing device (1) photometric data and (2) the refractive index of the solid medium of the gonioapparent material; (B) converting any non-linear photometric data from step A) above to linear photometric data; (C) using the illumination angle and the reflective scattering angle associated with the linear photometric data and the refractive index of the medium to calculate corresponding effect flake angles; (D) fitting the linear photometric data and the effect angle data with an equation; (E) calculating the corresponding effect flake angle needed to calculate the BRDF being generated in step (F); and (F) generating the BRDF from the corresponding effect flake angle from step (E) and the equation developed in step (D).
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: February 12, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventor: Larry Eugene Steenhoek
  • Patent number: 8355573
    Abstract: A method for matching colors includes providing a first source of a first color and a second source of a second color; measuring a set of spectral values for first color stimuli associated with the first color; calculating a first set of tristimulus values; defining a first set of human observer color matching functions; calculating a first set of corrected tristimulus values from the first set of spectral values using the first set of human observer color matching functions; measuring a second set of spectral values for second color stimuli associated with the second color; calculating a second set of tristimulus values; defining a second set of human observer color matching functions; calculating a second set of corrected tristimulus values from the second set of spectral values; determining a difference between the first and second set of corrected tristimulus values; and adjusting one of the sources to reduce the difference.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: January 15, 2013
    Assignee: Eastman Kodak Company
    Inventor: Christopher J. Edge
  • Patent number: 8339617
    Abstract: A film thickness measuring device is provided with a light source, a spectroscopic sensor, a processor, and a storage unit, and configured in such a manner that light from the light source vertically enters a plane to be measured provided with a film and the light reflected by the plane to be measured enters the spectroscopic sensor. The storage unit stores theoretical values of reflectivity distributions of respective film thicknesses and theoretical values of color characteristic variables of the respective film thicknesses. The processor finds the thickness of the film of the plane to be measured from the reflectivity distribution measured by the spectroscopic sensor by using the theoretical values of the reflectivity distributions of the respective film thicknesses or the theoretical values of the color characteristic variables of the respective film thicknesses stored in the storage unit.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: December 25, 2012
    Assignee: Nireco Corporation
    Inventors: Takeo Yamada, Takeshi Yamamoto, Takahiro Yamakura, Shinji Hayashi, Shingo Kawai
  • Patent number: 8314936
    Abstract: The present invention provides a quantitative evaluation method of fouling of antifouling properties, a fouling evaluation apparatus, and a production method of optical members, which can be applied to various members, and haves high reproducibility and enable to detect a subtle difference between fouling, and an optical layered body having a property of preventing fingerprints from adhering, an anti-contamination property and a degree of recovery from fouling, and a display product including the optical layered body. The present invention pertains to an evaluation method of fouling, wherein light is radiated to a test sample and scattered light reflected off or passing through the test sample is detected to evaluate a degree of fouling of the surface of the test sample.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: November 20, 2012
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Kiyoshi Itoh
  • Patent number: 8255181
    Abstract: A correction algorithm may be applied for correcting misalignment of a radially-aligned array of sensors. Due to the tilt, signals from sensors that are further away from the media, may become slightly attenuated, while signals from sensors that are closer to the media are slightly increased. The error appears periodic and largely sinusoidal in nature around the array given the circular nature of the array of sensor elements. The algorithm determines the magnitude and phase of a sinusoidal function that best fits the wavelength data. In one embodiment, a discrete Fourier transform may be performed at the ‘frequency’ equivalent to one period around the array to determine the magnitude and phase estimate thereof. Then, a sinusoidal correction function may be generated using the magnitude and the phase in order to correct the reflectance data.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: August 28, 2012
    Assignee: Xerox Corporation
    Inventor: Thomas Edward Higgins
  • Publication number: 20120206728
    Abstract: 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.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 16, 2012
    Applicant: THE SHERWIN-WILLIAMS COMPANY
    Inventor: Louisa Meijer
  • Patent number: 8243261
    Abstract: An optical property measurement apparatus includes: a main body which includes a plane-shape surface that is so disposed as to face the display portion; an optical sensor which receives light directed from an opening that is formed through the plane-shape surface; and a support portion which is disposed on a side of the plane-shape surface and keeps a constant distance between the display portion and the plane-shape surface; wherein a light shield portion that is so disposed as to enclose a circumferential area of the opening of the plane-shape surface and shields entrance of light from a region other than a measurement target region of the display portion when the optical property is measured.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: August 14, 2012
    Assignee: Konica Minolta Sensing, Inc.
    Inventors: Takeshi Matsumoto, Shinji Yamamoto, Kenji Imura, Kazuya Kiyoi, Yoshiyuki Nagashima, Yasushi Goto
  • Patent number: 8223336
    Abstract: 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.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: July 17, 2012
    Assignee: Eastman Kodak Company
    Inventor: Christopher J. Edge
  • Patent number: RE46557
    Abstract: The present invention relates to an An image processing apparatus which can restore, from a color and sensitivity mosaic image acquired using a CCD image sensor of the single plate type or the like, a color image signal of a wide dynamic range wherein the sensitivity characteristics of pixels are uniformized and each of the pixels has all of a plurality of color components is provided. A sensitivity uniformization section uniformizes the sensitivities of pixels of a color and sensitivity mosaic image to produce a color mosaic image, and a color interpolation section interpolates color components of the pixels of the color mosaic image M to produce output images R, G and B. The present invention image processing apparatus can be applied to a digital camera which converts a picked up optical image into a color image signal of a wide dynamic range.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: September 19, 2017
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Tomoo Mitsunaga, Seiji Kobayashi, Hiroaki Ono