Photoelectric Patents (Class 356/218)
  • Patent number: 10318472
    Abstract: A multisite sensing system including two or more analyte sensors, an interface device, and a shared bus. The interface device may be configured to receive a power signal and generate power for powering the analyte sensors and to convey data signals generated by the analyte sensors. The shared bus connected to the interface device and each of the analyte sensors and configured to provide the power generated by the interface device to the analyte sensors and to provide the data signals generated by the analyte sensors to the interface device. The interface device may be an inductive element. The shared bus may be a two wire, multiplexed bus. The analyte sensors may be spatially separated for analyte sensing at least two different locations. The analyte sensors may generate data signals indicative of the presence and/or amount of the same analyte or of one or more different analytes.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 11, 2019
    Assignee: Senseonics, Incorporated
    Inventor: Andrew DeHennis
  • Patent number: 10267729
    Abstract: The invention is directed to improved systems, methods, and computer readable media for detecting gas leaks. More particularly, the invention detects gas leaks or discharges, such as methane or any other suitable gases, by analyzing reflected or direct light that passes through a region of enhanced target gas concentration. The invention collects light and processes spectral data of the light. All molecules are subject to rotational motions, vibrational motions, and/or combinations thereof (rovibrational motions), in which the atoms in the molecule are vibrating with respect to each other and/or rotating around each other. When the light passes through the region of the target gas, a portion of the light with certain wavelengths will be absorbed by the target gas due to the rovibrational motions of the target gas molecules. By analyzing the magnitude of absorption at certain wavelengths, one can determine the concentration of certain target gas or gases.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: April 23, 2019
    Assignee: KAIROS AEROSPACE INC.
    Inventors: Brian Butler Jones, Steven William Deiker
  • Patent number: 10102178
    Abstract: A multisite sensing system including two or more analyte sensors, an interface device, and a shared bus. The interface device may be configured to receive a power signal and generate power for powering the analyte sensors and to convey data signals generated by the analyte sensors. The shared bus connected to the interface device and each of the analyte sensors and configured to provide the power generated by the interface device to the analyte sensors and to provide the data signals generated by the analyte sensors to the interface device. The interface device may be an inductive element. The shared bus may be a two wire, multiplexed bus. The analyte sensors may be spatially separated for analyte sensing at least two different locations. The analyte sensors may generate data signals indicative of the presence and/or amount of the same analyte or of one or more different analytes.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 16, 2018
    Assignee: Senseonics, Incorporated
    Inventor: Andrew DeHennis
  • Patent number: 10088492
    Abstract: An irradiation device for photopheresis, comprising an exposure chamber configured to receive an illumination container holding a target cell suspension, an irradiation transmitter configured to irradiate the illumination container and target cell suspension, an irradiation receiver configured to detect absorption of radiation from the irradiation transmitter, and a processing circuit coupled to the irradiation receiver and configured to determine whether a hematocrit of the target cell suspension exceeds a predetermined threshold hematocrit and to treat the target cell suspension with a treatment dosage of radiation if the predetermined threshold is exceeded.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 2, 2018
    Inventors: Christopher J Wegener, Katherine N Radwanski
  • Patent number: 9985583
    Abstract: The performance of photosensitive devices over time may be tested by configuring a photosensitive device test system that includes a light source plate that exposes photosensitive devices within a container to a specified light intensity. The light intensity may be adjusted by a programmable power source according to one or more thresholds. A test may last for a set duration with performance measurements being taken at predetermined intervals throughout the duration. Feedback from the photosensitive device test system may be recorded to determine whether to increase light intensity, to stop testing, to continue testing, and whether one or more environmental conditions should be altered. Measurements may be sent to a client for analysis and display to a user.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: May 29, 2018
    Assignee: HEE Solar, L.L.C.
    Inventors: Michael D. Irwin, Jerome Lovelace, Kamil Mielczarek
  • Patent number: 9930320
    Abstract: Systems, methods, and computer readable media to resolve three dimensional spatial information of cameras used to construct 3D images. Various embodiments perform communication synchronization between a first image capture system and one or more other image capture systems and generate a first flash pulse that projects a light pattern into an environment. An image is captured that includes the light pattern and a modulated optical signal encoded with an identifier of one of the first image capture system and related-camera information. A second flash from another image capture systems may flash at a second time based on the communication synchronization. During the second flash, the first image capture system captures a second image of the environment. Based on the first and second images, the first image capture system determines the orientation of the second image capture system relative to the first image capture system.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: March 27, 2018
    Assignee: Apple Inc.
    Inventors: Denis G. Chen, Chin Han Lin
  • Patent number: 9883148
    Abstract: A color mask for an image sensor of a vehicle camera, the color mask having a matrix configuration of filter pixels having different spectral transmission behaviors, some filter pixels being transparent filter pixels, which are at least essentially uniformly transparent for optical light, and additional filter pixels being color pixels having a wavelength-selective transmission behavior, the color mask having a color pattern as a repeating configuration of filter pixels having a specific transmission behavior. The color mask has a central area having a first color pattern and a lower area and/or an upper area having a second color pattern, the first color pattern and the second color pattern being different, and the first color pattern containing transparent filter pixels.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: January 30, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Ulrich Seger, Alexander Wuerz-Wessel, Paul Ruhnau
  • Patent number: 9841383
    Abstract: A method for characterizing the uniformity of a material includes selecting a set of size scales at which to measure uniformity within an area of interest in an image of the material; suppressing features in the image smaller than a selected size scale of interest within the set of size scales; dividing the image into patches equal to the size scale of interest; and calculating a uniformity value within each patch.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: December 12, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Evan J. Ribnick, John A. Ramthun, David D. Miller
  • Patent number: 9735891
    Abstract: A system and method involve propagating, from one or more optical sources connected to a platform, more than one optical signal through a surrounding medium towards a reflective surface. Reflected optical signals, representing the propagated optical signals reflected off of the reflective surface, are then detected using a detection system coupled to the platform. An ideal optical wavelength is then selected for optical communication from the platform within the surrounding medium based upon one or more characteristics of the detected reflected optical signals.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: August 15, 2017
    Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
    Inventors: Burton H. Neuner, III, Ryan P. Lu, Ayax D. Ramirez, Michael G. Lovern
  • Patent number: 9735070
    Abstract: Manufacturing a light source module may include mounting light emitting devices on substrates on an upper surface of a carrier, mounting optical devices to cover the light emitting devices, and inspecting the light emitting devices and the optical devices based on selectively capturing images thereof. Images may be captured based on controlling a light source module scanner assembly on the carrier. The substrates may extend in a first direction and may be spaced apart in a second direction. Controlling the light source module scanner assembly may include moving the light source module scanner assembly along a selected direction to position the light source module scanner assembly on at least one of the light emitting devices and the optical devices. The direction may be selected based on the quantity of substrates and the quantity of light emitting devices and optical devices on each of the substrates.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: August 15, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae Seo Park, Oh Seok Kwon, Ka Ram Lee, Jong Tae Kim
  • Patent number: 9726714
    Abstract: To provide a sensor device which is capable of high temperature detection using self-heat generation without providing a dedicated terminal and suppresses an increase in cost with an increase in chip occupation area due to the addition of a test pad. A sensor device is configured to include an active logic switching circuit for switching an active logic of an output driver and perform a heating inspection while switching the active logic of the output driver during an inspection process with the output driver as a heat generation source.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: August 8, 2017
    Assignee: SII SEMICONDUCTOR CORPORATION
    Inventor: Tomoki Hikichi
  • Patent number: 9647771
    Abstract: Systems and methods for wavelength optimization for underwater optical communication can include a plurality of n lasers having different wavelengths ?i for i=1 to n, a beam splitter and a corner retro-reflector. The plurality of n lasers can simultaneously illuminate the beam splitter along a coincident axis. The plurality of n lasers can be selectively blocked so that only one laser wavelength ?i at a time impinges on the beam splitter. A portion passes through the beam splitter to establish a reference signal, while the remainder is reflected off the corner retro-reflector. A portion of return illumination passes through the beam splitter to establish a return signal. The process can be repeated for each of n lasers for i=1 to n. The ?i wavelength where the normalized signal-to-noise differential between the reference signal and return signal is the minimum can be the optimum communication wavelength.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: May 9, 2017
    Assignee: The United States of America, as Represented by the Secretary of the Navy
    Inventors: Burton H. Neuner, III, Alexandru Hening, Bienvenido Melvin Pascoguin
  • Patent number: 9641825
    Abstract: A camera for determining distances to a scene, the camera comprising: a light source comprising a VCSEL controllable to illuminate the scene with a train of pulses of light having a characteristic spectrum; a photosurface; optics for imaging light reflected from the light pulses by the scene on the photosurface; and a shutter operable to gate the photosurface selectively on and off for light in the spectrum.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: May 2, 2017
    Assignee: MICROSOFT INTERNATIONAL HOLDINGS B.V.
    Inventors: Asaf Pelman, Avner Ishay Sander, Giora Yahav
  • Patent number: 9618387
    Abstract: A method and associated EUV lithography apparatus for determining the phase angle at a free interface (17) of an optical element (13) provided with a multilayer coating (16) that reflects EUV radiation and/or for determining the thickness (d) of a contamination layer (26) formed on the multilayer coating (16). The multilayer coating (16) is irradiated with EUV radiation, a photocurrent (IP) generated during the irradiation is measured, and the phase angle at the free interface (17) and/or the thickness (d) of the contamination layer (26) is determined on the basis of a predefined relationship between the phase angle and/or the thickness (d) and the measured photocurrent (IP). The measured photocurrent (IP) is generated from the entire wavelength and angle-of-incidence distribution of the EUV radiation impinging on the multilayer coating (16).
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: April 11, 2017
    Assignee: Carl Zeiss SMT GmbH
    Inventor: Michael Gerhard
  • Patent number: 9601060
    Abstract: The disclosure of the present invention provides an image processing method and apparatus. The method comprises acquiring a single picture image displayed on a display panel; determining an average value of each area relating to a display parameter, after the acquired single picture image is divided into a plurality of areas according to a preset regulation; determining differences between average values of respective two adjacent areas, and determining a uniformity of the single picture image displayed on the display panel in accordance with a relationship between each difference and a threshold of a resolvable picture uniformity by an human eye; adjusting the difference between the average values of the respective two adjacent areas to be not greater than the threshold of the resolvable picture uniformity by the human eye, when determining the single picture image displayed on the display panel to be not uniform.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: March 21, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Jung Chul Gyu
  • Patent number: 9564967
    Abstract: A computerized system and method for managing a passive optical network (PON) is disclosed. The system includes a detection and analysis module adapted for receiving uploaded measurement data from an optical line terminal (OLT) and at least one optical network terminal (ONT), and at least one of technical tools data, service failure data, and outside plant data. The detection and analysis module is adapted for determining a source of failure or potential failure in the PON by correlating the uploaded measurement data and the at least one of technical tools data and service failure data with information stored in a memory medium for the OLT and each ONT.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: February 7, 2017
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Kapil Shrikhande, Kent George McCammon, Kevin Xiangkai Meng, Raghvendra Savoor
  • Patent number: 9546989
    Abstract: A method for measuring the concentration of a gas component in a measurement gas using a gas analyzer comprises varying the wavelength of the light of a wavelength-tunable light source within periodically consecutive scan intervals for wavelength-dependent scanning of a gas component absorption line of interest. The method also comprises modulating the wavelength of the light of the wavelength-tunable light source with a frequency, guiding the modulated light through the measurement gas onto a detector and demodulating a measurement signal generated by the detector in the event of a harmonic of the frequency. The method further comprises producing a measurement result by fitting a desired curve to the profile of the demodulated measurement signal. A function orthogonal to the desired curve is provided, and an orthogonal component of the measurement result is produced by fitting the orthogonal function to the profile of the demodulated measurement signal.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: January 17, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ralf Bitter, Thomas Hankiewicz, Christoph Wolfgang Marquardt, Jan Nygren, Kai-Uwe Pleban, Franz Steinbacher
  • Patent number: 9534953
    Abstract: A laser output measuring apparatus in which an optical separator is disposed in a position that is rotated by a predetermined angle about an optical axis of a laser beam converged by a lens, and further rotated by a predetermined angle about the optical axis of the laser beam and a straight line perpendicular to an incident surface of the laser beam.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: January 3, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumio Shoda, Hidenori Fukahori, Takayuki Yanagisawa, Mitoru Yabe, Tetsuya Nishimura, Shuhei Yamamoto, Yoko Inoue, Tetsuo Funakura
  • Patent number: 9511708
    Abstract: A method and system are provided to image an external scene by employing a custom image sensor. The custom image sensor may use a GRRB array to filter the images of oncoming and preceding vehicle taillights captured by a vehicle camera. The method and system may also calculate a GRRB color metric for use in the custom image sensor by performing interpolation on a number of color channels, summing the brightness values for each of the color channels interpolated, normalizing each of the brightness values, and converting the normalized brightness values from an RGB scale to a linear scale of non-red to red.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: December 6, 2016
    Assignee: GENTEX CORPORATION
    Inventors: David J. Wright, David M. Falb
  • Patent number: 9316687
    Abstract: Disclosed is a method for testing a light-emitting device comprising the steps of: providing a light-emitting device comprising a plurality of light-emitting diodes; driving the plurality of the light-emitting diodes with a current; generating an image of the light-emitting device; and determining a luminous intensity of each of the light-emitting diodes; wherein the magnitude of the current is determined such that the current density driving each of the light-emitting diodes is smaller than or equal to 300 mA/mm2.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: April 19, 2016
    Assignee: EPISTAR CORPORATION
    Inventors: Chia-Liang Hsu, Chih-Chiang Lu
  • Patent number: 9304596
    Abstract: A device and method to detect a gesture performed by an object in touch-less communication with the device are described. The device includes two or more ambient light sensors arranged at respective first surface locations of the device, each of the two or more ambient light sensors sensing light intensity at the respective first surface location. The device also includes one or more processors to control one or more light sources at respective second surface locations of the device based on the light intensity sensed by the two or more ambient light sensors, calibrate the two or more ambient light sensors based on the one or more light sources, and detect the gesture based on the light intensity sensed by each of the two or more ambient light sensors.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 5, 2016
    Assignee: BlackBerry Limited
    Inventors: Peter Mankowski, Weimin Rang, Xiaowei Wu
  • Patent number: 9150146
    Abstract: A light control apparatus for a vehicle may include: an operation unit configured to receive a selection for an auto-light function; a control unit configured to determine whether or not a light operation condition is satisfied based on position information provided from a GPS module and plural pieces of information for operating a light unit, received through a wireless communication module, and output a light operating signal according to the determination result, when the auto-light function is selected through the operation unit; and a light control unit configured to operate a light unit according to the light operating signal provided from the control unit.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: October 6, 2015
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Han Yeoung Bae
  • Patent number: 9129549
    Abstract: An automatic brightness adjustment for devices with displays includes the capability to assess ambient light. The assessment may be made using circuitry, such as a light meter circuit, by exploiting exposure control circuitry, or using other approaches. The ambient light value is sent to a brightness adjustment driver, which may employ a look-up table to keep track of brightness adjustments for particular ambient conditions. The look-up table may include distinct adjustment values.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: September 8, 2015
    Assignee: Intel Corporation
    Inventor: Cynthia S. Bell
  • Patent number: 9125278
    Abstract: A system and method are disclosed for determining a pixel capacitance. The pixel capacitance is correlated to a pixel age to determine a current correction factor used for compensating the pixel drive current to account for luminance degradation of the pixel that results from the pixel aging.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: September 1, 2015
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji
  • Publication number: 20150138823
    Abstract: Generally, the present disclosure provides for a light duct sensor that can monitor an average light flux through light duct useful for architectural lighting. The present disclosure provides for a system that allows a minimally obtrusive sampling of the light in a duct. It samples a small fraction of a cross sectional area of a light duct that is distributed across potentially the entire cross sectional area, without creating a significant disturbance to the light.
    Type: Application
    Filed: April 5, 2013
    Publication date: May 21, 2015
    Inventors: Thomas R. Corrigan, Patrick R. Fleming
  • Publication number: 20150131086
    Abstract: A driving environment detection device acquires a captured image of the direction the host vehicle is travelling in, and from the captured image, extracts parameters relating to brightness of a road surface for a road driven by the host vehicle. Then, on the basis of the parameters, the driving environment of the vehicle is estimated. By way of such a light control system, it is possible to more accurately detect ambient brightness by estimating the driving environment in accordance with the parameters related to the brightness of the road surface. Therefore, it is possible to accurately detect the driving environment.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 14, 2015
    Inventors: Taiji Morishita, Hironori Sato
  • Patent number: 9019504
    Abstract: A transportable goniospectrometer with a constant observation center for a radiometric measurement of the reflection of a natural surface includes a spectrometer having an optical unit and a sensor. A main pillar has a lower and an upper pillar end. An arc has a fixed and a free arc end. A slide is disposed displaceably and fixably along the arc. The slide carries the optical unit orientated towards the observation center. A cantilever has a fixed cantilever end connected to the upper pillar end via a screw connection, and a free cantilever end which has a suspension that is rotatable and fixable about a vertical axis. The suspension is connected to the sensor and to the fixed arc end of the arc. The suspension is configured to position the arc at a distance of the arc radius of the arc above the natural surface.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: April 28, 2015
    Assignee: Alfred-Wegener-Institut Helmholtz- Zentrum Fuer Polar- und Meeresforschung
    Inventors: Marcel Buchhorn, Reinhold Petereit
  • Publication number: 20150105873
    Abstract: The invention relates to an optoelectronic safety sensor comprising an electronic measuring device for generating measured signals which depend on a state of a safety zone observed by the safety sensor and an electronic evaluation unit for evaluating the measured signals. The electronic evaluation unit comprises a programmable logic controller integrated into the optoelectronic safety sensor for the logic evaluation of logic state variables which are derived from the measured signals.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 16, 2015
    Inventors: Manfred HABERER, Andreas SCHIEBER, Frank HABERSTROH
  • Publication number: 20150092186
    Abstract: A method, apparatus, and a computer program is provided. The method comprises: determining an ambient light value from ambient light data provided by at least one ambient light sensor, in dependence upon the spectral distribution of the ambient light data provided by the at least one ambient light sensor and a manufacturer of the at least one ambient light sensor.
    Type: Application
    Filed: May 8, 2012
    Publication date: April 2, 2015
    Applicant: Nokia Corporation
    Inventors: Ralf Wieser, Somakanthan Somalingam, Max Lindfors, Samu Matias Kallio
  • Patent number: 8982341
    Abstract: A light distribution characteristic measurement apparatus includes: a detecting unit for detecting light from a light source; a mirror for reflecting the light from the light source to direct the light to the detecting unit; a movement mechanism for moving the detecting unit and the mirror relatively to the light source; a rotation mechanism for rotating the mirror while maintaining an optical path length from the light source to the detecting unit; and a processor adapted to calculate the light distribution characteristic of the light source, based on a plurality of measurement results that are detected by the detecting unit under a condition that the detecting unit and the mirror are arranged at a plurality of measurement positions relative to the light source and the mirror is oriented at different rotational angles for each measurement position.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: March 17, 2015
    Assignee: Otsuka Electronics Co., Ltd.
    Inventor: Yoshi Enami
  • Publication number: 20150069920
    Abstract: The present invention relates to a method of detecting a failed luminaire and/or light sensor in a lighting system comprising M luminaires and N light sensors. The elements Dsl of an N×M transfer matrix D expresses how each luminaire l affect a light sensor s with respect to sensed light intensity, wherein s=1, 2, . . . N, and l=1, 2, . . . , M.
    Type: Application
    Filed: April 12, 2013
    Publication date: March 12, 2015
    Inventors: Theodorus Jacobus Johannes Denteneer, Oscar Garcia Morchon, Ashish Vijay Pandharipande, David Ricardo Caicedo Fernández
  • Patent number: 8976346
    Abstract: An optical coupling lens includes a refraction surface, a first total reflection surface, a second total reflection surface, a first aligning member and a second aligning member. The refraction surface, the first total reflection surface and the second total reflection surface are orderly connected end to end. The first aligning member and the second aligning member are formed on the refraction surface.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 10, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Yi Hung
  • Patent number: 8970851
    Abstract: A method and device for detecting a precision of a dish parabolic reflecting mirror are provided. Accurate coordinate values of positions on an X-axis and a Y-axis may be obtained by adjusting and controlling a double helix lifting mechanism, a 360-degree plane rotary mechanism, a telescoping mechanism, and an extension rod, and using a photoelectric position sensor with a high precision and the extension rod being measured. Then, the curved surface of the dish paraboloid reflecting mirror being detected is obtained by fitting sampling values of the coordinate values of spatial positions of the detecting points at various, and the precision error value by comparing the curved surface of the dish paraboloid reflecting mirror being detected to the theoretical curved surface, thereby realizing detection of the precision of the curved surface of the dish paraboloid reflecting mirror.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: March 3, 2015
    Assignees: Xiangtan Liyuan Electric Tooling Co. Ltd., Xiangtan Electric Manufacturing Co., Ltd.
    Inventors: Xinhua Tan, Kai Zhu
  • Patent number: 8947652
    Abstract: The disclosure provides a photoelectric sensor that provides useful information to set measurement conditions. The photoelectric sensor includes a light emitting unit having a light emitting element configured to emit detection light toward a detection area, a light receiving unit having a light receiving element configured to receive the detection light from the detection area and to obtain a detection value corresponding to the amount of light received, and a display unit configured to display information about the detection value in the light receiving unit. When the detection value varies across a predetermined threshold, the display unit displays a transit time that is the time from when the detection value crosses the predetermined threshold until when it crosses the predetermined threshold again, and a variation amount of the detection value in the variation.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: February 3, 2015
    Assignee: Omron Corporation
    Inventors: Soji Ohmae, Kiyohiko Gondo, Yusuke Iida
  • Publication number: 20150022804
    Abstract: An optical measuring apparatus for measuring optical characteristics of a stereoscopic display device includes a test image supplier for generating a 3D test signal, a 3D display for displaying left-eye image and/or right-eye image based on the 3D test signal supplied from the test image supplier, a image selection member for selectively transmitting the left-eye image and right-eye image to be displayed on the 3D display, and a light measuring device for measuring intensity or color information of the image transmitted via the image selection member.
    Type: Application
    Filed: October 9, 2014
    Publication date: January 22, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Jae Hong KIM, Dong Gyou LEE, Kyong Ho LIM
  • Publication number: 20150009494
    Abstract: An optical touch device with a detecting area includes light guide components, a light source module, a light detecting component and an auxiliary light guide component. Each light guide component includes a first light emitting surface. The light guide components includes a first light guide component and a second light guide component. The auxiliary light guide component and the light detecting component are disposed between two neighboring ends of the first light guide component and the second light guide component, and the light detecting component includes a light detecting end. The auxiliary light guide component is positioned between the light detecting component and the detecting area and includes a first light incidence surface, a second light incidence surface and a second light emitting surface connected between the first light incidence surface and the second light incidence surface. The optical touch device can effectively avoid the blind zone problem.
    Type: Application
    Filed: September 20, 2014
    Publication date: January 8, 2015
    Inventors: HUNG-CHING LAI, CHUN-SHENG LIN
  • Publication number: 20140374221
    Abstract: The invention relates to a detection device (2) intended to be positioned in a conveyor (1) which comprises conveying rollers (100) arranged between two lateral uprights (10, 11) to convey goods in a conveying direction (D), the device comprising: an elongate support extending over its length along a longitudinal axis (X), said support supporting a number of detectors (40) distributed along its longitudinal axis (X) to detect the goods borne by the conveyor (1), said support being intended to be positioned between two conveying rollers (100), fixed between the two lateral uprights (10, 11) of the conveyor (1), transversally relative to the conveying direction (D).
    Type: Application
    Filed: September 23, 2011
    Publication date: December 25, 2014
    Applicant: SCHNEIDER ELECTRIC INDUSTRIES SAS
    Inventor: Lino DE MARTIN
  • Patent number: 8902415
    Abstract: A luminous intensity test device includes an optical frequency converter, a display, and a processor. The optical frequency converter selectively converts at least a portion of light emitted by a light source into a digital signal. The display displays a color selection interface. The processor processes the digital signal and obtains the luminous intensity. When a tester inputs a color parameter into the color selection interface via an input device, the optical frequency converter converts a kind of light to the digital signal and then the processor processes the digital signal to obtain a luminous intensity and display the luminous intensity on the display.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: December 2, 2014
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chun-Yan Yang, Yu-Cui Zhou, Na-Na Zhai, Qiao-Na Sheng, Xiao-Jun Chen, Jiang-Feng Shan
  • Patent number: 8896823
    Abstract: A light distribution characteristic measurement apparatus for measuring the light distribution characteristic of a light source is provided. The apparatus includes a plurality of detectors arranged so that they have a predetermined relative relationship with each other. One detector has a detection range at least partially overlapping a detection range of another detector adjacent to the former detector. The apparatus further includes a drive unit that drives a plurality of detectors as one unit to update a positional relationship of the plurality of detectors relative to the light source, and a calculation unit that calculates the light distribution characteristic of the light source by performing a process depending on at least one of a relative relationship between a plurality of detectors and overlapping of respective detection ranges thereof, based on respective results of detection that have been acquired by the plurality of detectors at the same timing.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: November 25, 2014
    Assignee: Otsuka Electronics Co., Ltd.
    Inventor: Yoshi Enami
  • Publication number: 20140333203
    Abstract: The invention provides a lighting unit (100) comprising (1) a vacuum ultraviolet (VUV) radiation based source of radiation (10) configured to generate VUV radiation (11), and (2) a luminescent material (20) configured to convert at least part of the VUV radiation into visible luminescent material light (21), wherein the luminescent material comprises a trivalent praseodymium containing material selected from the group consisting of (Zr1-x-yHfxPry)(Si1-yPy)04, (Zr1-x-yHfxPry)3((P1-3/4yS3/4y)04)4, and (Zr1-x-yHxPry)3((B1-3/4yX3/4y))O3)4, with x in the range of 0.0-1.0 and y being larger than 0 and being equal to or smaller than 0.15.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 13, 2014
    Inventors: Georg Greuel, Thomas Juestel, Helga Bettentrup, Benjamin Herden, David Enseling
  • Patent number: 8836932
    Abstract: Disclosed is an inspecting equipment for inspecting a light emission characteristic of a display screen includes: a carrying device provided for carrying the display screen, a cover device and a data analyzing device. The cover device has a detecting surface provided with a plurality of luminance detectors, and covers an emitting surface of the display screen to form a darkroom between the cover device and the detecting surface. A plurality of corresponding luminance information is generated by the luminance detectors provided for detecting a plurality of measuring zones of the emitting surface. The data analyzing device receives the luminance information and analyzes the light emission characteristic of the display screen according to the luminance information. And, it is thus able to rapidly inspect the light emission characteristic of the display screen during manufacture process, and is easy to be applied to a present producing line.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: September 16, 2014
    Assignee: Taiwan Power Testing Technology Co., Ltd.
    Inventor: Yu-Chiang Lin
  • Patent number: 8830453
    Abstract: A method for measuring intensity distribution of light includes a step of providing a carbon nanotube array located on a surface of a substrate. The carbon nanotube array has a top surface away from the substrate. The carbon nanotube array with the substrate is located in an inertia environment or a vacuum environment. A light source irradiates the top surface of the carbon nanotube array, to make the carbon nanotube array radiate a visible light. A reflector is provided, and the visible light is reflected by the reflector. An imaging element images the visible light reflected by the reflector, to obtain an intensity distribution of the light source.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: September 9, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Jun Zhu, Jing-Lei Zhu, Kai-Li Jiang, Chen Feng, Ji-Qing Wei, Guo-Fan Jin, Shou-Shan Fan
  • Patent number: 8823928
    Abstract: An optoacoustic system includes first and second light sources capable of generating pulse of light at first and second wavelengths, first and second electrically controlled optical attenuators, first and second light sync detectors, and a combiner. A power meter that is calibrated to determine power at the first and second predominant wavelength measures power at the first wavelength after the first light sync is detected and measures power at the second wavelength after the second light sync is detected. The system includes a calibration mode wherein it electrically attenuates the first optical attenuator when the power measured by the power meter at the first wavelength after the first light sync is detected is above a first level, and electrically attenuated the second optical attenuator when the power measured by the power meter at the second wavelength after the second light sync is detected is above a second level.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 2, 2014
    Assignee: Seno Medical Intruments, Inc.
    Inventors: Donald Herzog, Elisa Gravis, Bryan Clingman, Remie J. Smith, Thomas G. Miller
  • Publication number: 20140240698
    Abstract: An optical power meter including a photodiode having a surface for receiving a beam of light, a thermo-electric cooler for maintaining the photodiode at a predetermined temperature, and a current monitor for measuring a drive current passing through the thermo-electric cooler allows dark current drift arising from a varying thermal gradient across the active region of the photodiode to be corrected, thus improving stability of the optical power meter. More specifically, by monitoring the TEC drive current, and applying a correction factor to the optical power readings, the stability of optical power readings is improved by an order of magnitude.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Inventors: Chris Wagner, James Kirby Goulet
  • Publication number: 20140192351
    Abstract: Disclosed is an inspecting equipment for inspecting a light emission characteristic of a display screen includes: a carrying device provided for carrying the display screen, a cover device and a data analyzing device. The cover device has a detecting surface provided with a plurality of luminance detectors, and covers an emitting surface of the display screen to form a darkroom between the cover device and the detecting surface. A plurality of corresponding luminance information is generated by the luminance detectors provided for detecting a plurality of measuring zones of the emitting surface. The data analyzing device receives the luminance information and analyzes the light emission characteristic of the display screen according to the luminance information. And, it is thus able to rapidly inspect the light emission characteristic of the display screen during manufacture process, and is easy to be applied to a present producing line.
    Type: Application
    Filed: March 21, 2013
    Publication date: July 10, 2014
    Inventor: Yu-Chiang LIN
  • Patent number: 8767198
    Abstract: A detection apparatus comprising a chuck, a probe device, a light-sensing device and a light-concentrating unit is disclosed. The chuck bears light-emitting diode chips. The probe device includes two probes and a power supply. The end point of the probes respectively electrically connects with one of the light-emitting diode chips and the power supply to make the light-emitting diode chip emits a plurality of light beams. The light-sensing device is disposed on one side of a light-emitting surface of the light-emitting diode chip so as to receive the light beams emitted by the light-emitting diode chip. The light-concentrating unit is disposed between the light-emitting diode chip and the light-sensing device to concentrate the light beams emitted by the light-emitting diode chip.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 1, 2014
    Assignee: Genesis Photonics Inc
    Inventors: Tai-Cheng Tsai, Tai-Wei Wu, Gwo-Jiun Sheu, Shou-Wen Hsu, Yun-Li Li
  • Patent number: 8755044
    Abstract: The illumination power density of a multi-spot inspection system is adjusted in response to detecting a large particle in the inspection path of an array of primary illumination spots. At least one low power, secondary illumination spot is located in the inspection path of an array of relatively high power primary illumination spots. Light scattered from the secondary illumination spot is collected and imaged onto one or more detectors without overheating the particle and damaging the wafer. Various embodiments and methods are presented to distinguish light scattered from secondary illumination spots. In response to determining the presence of a large particle in the inspection path of a primary illumination spot, a command is transmitted to an illumination power density attenuator to reduce the illumination power density of the primary illumination spot to a safe level before the primary illumination spot reaches the large particle.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: June 17, 2014
    Assignee: KLA-Tencor Corporation
    Inventors: Juergen Reich, Charles Amsden, Jiayao Zhang, Christian Wolters
  • Patent number: 8749773
    Abstract: Disclosed is a method for testing a light-emitting device comprising the steps of: providing an integrating sphere comprising an inlet port and a first exit port; disposing the light-emitting device close to the inlet port of the integrating sphere; providing a current source to drive the light-emitting device to form an image of the light-emitting device in driven state; providing an image receiving device and to receive the image of the light-emitting device, wherein the image receiving device is connected to the first exit port of the integrating sphere; and determining a luminous intensity of the light-emitting device according to the image. An apparatus for testing a light-emitting device is also disclosed.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: June 10, 2014
    Assignee: Epistar Corporation
    Inventors: Tang-Chung Chao, Pei-Hsiang Tseng, Jia-Kuan Kuo, Guan-Hung Wu, Yuan-Hao Su, Chi-Hsin Ho, Chia-Liang Hsu, Chih-Chiang Lu
  • Patent number: 8749772
    Abstract: An optical wavelength monitor photodiode integrated on a wafer and/or an optical device and coupled to optical components thereof provides wavelength measurement. The optical wavelength monitor includes a photodiode configured to output a signal that is representative of a wavelength of the light. An additional photodiode may be included in the optical wavelength monitor, each photodiode differing from the other in operating characteristics. The monitor may be used in testing the optical device while in wafer form and when the optical device has been cleaved from the wafer at the bar level. Testing/monitoring of the optical device may also be performed during use, for example, to control the wavelength of a laser such as a tunable laser.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: June 10, 2014
    Assignee: Oclaro Technology Limited
    Inventors: Giacinto Busico, Neil David Whitbread, Andrew John Ward, Andrew Moseley
  • Patent number: 8736842
    Abstract: The invention relates to an actuation and evaluation circuit for a laser diode (1) and a photodiode (3) for determining the concentration of a gas. The laser diode can generate light in the range of an absorption line of the gas. The circuit comprises a driver (10, 11, 12, 13) for generating a driving signal (17) for the laser diode (1), an assembly (8, 9) for generating a reference signal (20), and a subtractor (5) for subtracting the reference signal (20) from the signal (21) supplied by the photodiode. The invention further relates to a measuring device for determining the concentration of a gas by means of such an actuation and evaluation circuit. Finally, the invention relates to a corresponding method.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: May 27, 2014
    Assignee: Carefusion Germany 234 GmbH
    Inventors: Helmut Scherer, Dieter Schrader, Stefan Menninger