Photometers Patents (Class 356/213)
  • Patent number: 8130371
    Abstract: A reflection characteristic measuring apparatus capable of scanning a specimen surface of a sheet specimen at a high speed is provided. The reflection characteristic measuring apparatus includes a group of illuminating and light-receiving systems for directing illuminating light onto the specimen surface of the sheet specimen held by a specimen holding roller pair and for receiving reflected light from the specimen surface. The illuminating and light-receiving systems measure a spectral characteristic of the received reflected light. The illuminating and light-receiving systems are disposed over one-dimensional arrays of color samples which extend in the longitudinal direction of the sheet specimen, and scan the one-dimensional arrays in a direction opposite to a direction in which the sheet specimen is transported.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: March 6, 2012
    Assignee: Konica Minolta Sensing, Inc.
    Inventor: Kenji Imura
  • Publication number: 20120050726
    Abstract: A metrology system that uses a plurality of photo-detecting targets positioned on the objects to be assembled, a plurality of rotating photo-emitting heads, a master signal generator that generates a reference RF signal, and a signal processor that determines the position of each of the targets from signals generated by each target in response to the photo-emitting heads. During operation, the reference RF signal is broadcast to the rotating photo-emitting heads and the photo-detecting targets. The RF signal is used to determine the azimuth of the heads relative to a zero reference position to a high degree of accuracy.
    Type: Application
    Filed: August 22, 2011
    Publication date: March 1, 2012
    Applicant: NIKON CORPORATION
    Inventors: W. Thomas Novak, Daniel G. Smith, Lloyd Holland
  • Patent number: 8125631
    Abstract: Provided is a tester for testing an optical detector. The tester includes a plurality of light emitting units which emit light beams to the optical detector, wherein the light beams have light intensities different from each other, and a power supply unit which supplies electric power to the plurality of light emitting units.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: February 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Induk Hwang, Jeonggun Lee
  • Publication number: 20120044484
    Abstract: An optical probe for measuring light signals includes a first optical fiber guiding incoming light, a lens focusing incoming light towards a sample and collecting altered light from the sample, a second optical fiber guiding altered light, a light logging device measuring intensity fluctuations in the incoming light, wherein the light logging device is positioned after the first optical fiber, whereby the light logging device receives a part of the incoming light from the first fiber. The optical probe is normally applied for measuring light signals in vivo, and finds its primary applications within the field of optical spectroscopic measurements, where the light signals measured by said probe are applied in combination with an apparatus wherein light signals are analyzed against its spectral components for instance in Raman, fluorescence, phosphorescence absorption, diffusion and transmission studies.
    Type: Application
    Filed: March 12, 2009
    Publication date: February 23, 2012
    Applicant: RSP Systems A/S
    Inventor: Morten Henneberg
  • Publication number: 20120038917
    Abstract: A sensor of the type for liquid and/or gas analysis, which is connected to a measuring and/or evaluating system or, respectively, to a higher-ranking control system and has a sensor housing. The circuit for the collecting, processing and transmitting measured values to the measuring and/or evaluating system or to the control system (19) are provided in the sensor housing (2). This circuit has analog sensor electronics (3), an analog-digital converter (14) for converting the detected analog measured values into digital measured values, a processing unit (15) and communication device (17) for processing and transmitting the digital measured values to the measuring and/or evaluating system or to the control system (19) according to a standard communication protocol of process technology.
    Type: Application
    Filed: July 14, 2011
    Publication date: February 16, 2012
    Applicants: Wolfgang Babel, KROHNE Analytics GmbH
    Inventor: Wolfgang BABEL
  • Patent number: 8111388
    Abstract: A LED light fixture and a luminous flux monitoring system for a light fixture. The light fixture includes a housing defining an interior space including an interior surface and a transmissive panel. A light source is coupled to the interior surface. The system includes a light sensor coupled to the interior surface and aligned to receive light from the transmissive panel, light source, and/or interior surface. The light sensor is configured to measure luminous flux in the interior space. A controller is coupled to the light source and the light sensor. The controller is configured to determine if a light sensor measurement of luminous flux in the interior space is more or less than a reference value of the luminous flux. If the measurement of luminous flux is less than the reference value, the controller is configured to activate an end-of-life indicator. The reference value equals (total flux?internal ambient flux)×depreciation factor.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: February 7, 2012
    Assignee: Oldenburg Group Incorporated
    Inventors: Christopher M. Glandt, Jay M. Eissner, Mark J. Hastings
  • Publication number: 20120019255
    Abstract: A system that monitors fuel cells in a fuel cell group. The system includes a plurality of voltage sensors coupled to the fuel cells in the fuel cell group, where each sensor monitors a different voltage of the fuel cells and where lower priority voltage sensors monitor higher voltages and higher priority sensors monitor lower voltages. The system also includes a plurality of oscillators where a separate oscillator is coupled to each of the sensors. Each oscillator operates at a different frequency where higher frequency oscillators are coupled to lower priority sensors and lower frequency oscillators are coupled to higher priority sensors. A light source that receives frequency signals from the oscillators and switches on and off in response to the frequency signals. A light pipe receives the switched light signals from the light source and provides light signals at a certain frequency at an end of the light pipe.
    Type: Application
    Filed: July 20, 2010
    Publication date: January 26, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: David D. Rea, Michael F. Zawisa, Kenneth L. Kaye, Robert S. Foley
  • Publication number: 20120019812
    Abstract: An interference filter has a fixed mirror and a movable mirror that are formed of Ag—Sm—Cu alloy films that contain silver (Ag), samarium (Sm), and copper (Cu), or Ag—Bi—Nd alloy films that contains silver (Ag), bismuth (Bi), and neodymium (Nd).
    Type: Application
    Filed: May 24, 2011
    Publication date: January 26, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Susumu SHINTO, Koji KITAHARA
  • Publication number: 20120019813
    Abstract: Measurement cannot be made when trying to measure a wavefront aberration of a wide-angle lens, being wide in a field of view, comparing to a focus distance, by a Shack-Hartmann sensor, since an inclination of the wavefront exceeds an allowable value of inclination of the Shack-Hartmann sensor. The Shack-Hartmann sensor is inclined at a position of a pupil of a lens, and is controlled so that it lies within the allowable value mentioned above. Photographing is made through step & repeat while overlapping at the same position, to compose in such a manner that overlapping spots are piled up, and thereby measuring the wavefront aberration of the lens having a large pupil diameter.
    Type: Application
    Filed: January 22, 2010
    Publication date: January 26, 2012
    Applicant: HITACHI, LTD.
    Inventors: Yasuhiro Yoshitake, Minoru Yoshida, Keiko Oka
  • Publication number: 20120013915
    Abstract: An optical image measurement device comprises: a light amount adjustment part that adjusts the light amount of a laser beam generated by a low coherence light source 201; and a photodiode 105 placed outside the light path of the laser beam irradiated on an eye E and capable of measuring the light amount, wherein the laser beam is input to the photodiode 105 by changing the direction of a galvanomirror 170B; the photodiode 105 measures the light amount of the input laser beam; and the light amount adjustment part previously stores a specified range of light amount and adjust the light amount of the laser beam generated by the low coherence light source 201 such that the light amount measured by the photodiode 105 falls within the specified range.
    Type: Application
    Filed: March 30, 2010
    Publication date: January 19, 2012
    Applicant: KABUSHIKI KAISHA TOPCON
    Inventors: Kazuyuki Okamura, Yasuhisa Ishikura
  • Publication number: 20120006693
    Abstract: In vitro electrochemical sensors that provide accurate and repeatable analysis of a sample of biological fluid are provided. Embodiments include sensors that include a sample chambers having overhangs extending therefrom.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 12, 2012
    Inventors: Benjamin J. Feldman, Yi Wang
  • Publication number: 20120002194
    Abstract: An apparatus, system, and method for increasing measurement accuracy in imaging cytometry. The system may include a light detector configured to measure light emitted by a first particle and light emitted by a second particle, where the measured light from the second particle at least partially overlaps the measured light from the first particle in an overlap region. Additionally, the system may include a processor coupled to the light detector, where the processor is configured to determine a contribution of light from the first particle in the overlap region and determine a contribution of light from the second particle in the overlap region. The processor may also be configured to subtract the contribution of light from the second particle from the contribution of light from the first particle and determine the intensity of light emitted by the first particle.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Inventors: Wayne Dennis Roth, Matthew S. Fisher
  • Publication number: 20120002195
    Abstract: An arc flash detection method includes transmitting light via an optical fiber to a sensor and transmitting light from the sensor that includes components representative of acoustic waves and light for filtering and processing to detect an occurrence of an arc flash.
    Type: Application
    Filed: September 15, 2011
    Publication date: January 5, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Juntao Wu, Hua Xia, Robert Deveaux, Zhihong Mao, David John Allcock, Qin Chen
  • Publication number: 20110308318
    Abstract: An insolation sensor is disclosed and is used to determine a solar light intensity as a basis for evaluating electric power generated by solar modules exposed to the solar light intensity. The insolation sensor includes an outer surface including a light entrance window, and at least one photo sensor configured to measure the solar light intensity. The at least one photo sensor is arranged behind the light entrance window. The insolation sensor further includes a detector device configured to detect precipitation and/or a resulting deposit on the surface which both affects the insolation sensor and the solar modules.
    Type: Application
    Filed: June 16, 2011
    Publication date: December 22, 2011
    Applicant: SMA Solar Technology AG
    Inventor: Bjoern Magnussen
  • Patent number: 8077304
    Abstract: A light amount measuring apparatus including a light amount measuring circuit and a power supply for supplying power to the light amount measuring circuit; wherein the light amount measuring circuit includes a light receiving device for receiving light and outputting an electric signal corresponding to light amount of the received light; a first switch for switching between electrical connection and disconnection between the light receiving device and the power supply; and a drive controller for controlling the first switch so that the first switch electrically connects the light receiving device to the power supply when the light receiving device is set to an activated state and electrically disconnects the light receiving device from the power supply when the light receiving device is set to a deactivated state.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: December 13, 2011
    Assignee: Oki Semiconductor Co., Ltd.
    Inventor: Tadashi Chiba
  • Publication number: 20110299067
    Abstract: To make it possible to alter a cell length with reduction of a manufacturing cost so that a spacer can be securely positioned at a desired position, a cell includes: a pair of optical windows sandwiching a flow channel; a cell body provided with an accommodating recess and a solution introduction part and a solution deriving part; a pair of light transmitting members in the accommodating recess and forming the pair of optical windows; a spacer defining a distance between the opposing surfaces of the pair of light transmitting members; and a pressing mechanism for pressing the light transmitting members and the spacer toward the bottom surface of the accommodating recess so as to form the flow channel, wherein a positioning recess having a shape corresponding to the spacer is provided on at least one of the opposing surfaces and the spacer is fitted therein.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 8, 2011
    Applicant: HORIBA, LTD.
    Inventors: Issei Yokoyama, Kimihiko Arimoto
  • Publication number: 20110299065
    Abstract: One embodiment of the present invention is a unique system for measuring radiant energy in gas turbine engines, gas turbine engine components and gas turbine engine/component rigs. Another embodiment is a unique method for measuring radiant energy in gas turbine engines, gas turbine engine components and gas turbine engine/component rigs. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for measuring radiant energy. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.
    Type: Application
    Filed: December 29, 2010
    Publication date: December 8, 2011
    Inventors: James Carl Loebig, Jefre H. Cockerham, Emil R. Dejulio, James E. McDonald
  • Publication number: 20110291640
    Abstract: The remaining sheet quantity detection device of the present invention is provided with a storage unit for storing first information which associates a distance between a distance measuring sensor and a tray with a level value in a distance range less than a peak distance, and second information which associates the distance with the level value in a distance range exceeding the peak distance. Additionally provided is a distance acquisition unit for acquiring a distance that is associated with the level value obtained by the distance measuring sensor in the first information when a detection unit detects that the distance is less than the peak distance, and acquiring a distance that is associated with the level value obtained by the distance measuring sensor in the second information when the detection unit detects that the distance exceeds the peak distance.
    Type: Application
    Filed: May 25, 2011
    Publication date: December 1, 2011
    Applicant: KYOCERA MITA CORPORATION
    Inventor: Yukio Tanisaki
  • Publication number: 20110279815
    Abstract: This present invention discloses a manufacturing method and structure for a wafer level image sensor module with fixed focal length. The method includes the following steps. First, a silicon wafer comprising several image sensor chips having a photosensitive area and a lens module array wafer comprising several wafer level lens modules with fixed focal length are provided. Next, the image sensor chips and the wafer level lens modules are sorted in grades according to the different quality grades. According to the sorting results, each of the wafer level lens modules is assigned to be situated above the image sensor chip that has the same grade. At the same time, each of the wafer level lens modules is directed to face the photosensitive area of each image sensor chip. Finally, in the packaging process, the wafer level lens module is surrounded by an encapsulation material.
    Type: Application
    Filed: November 17, 2010
    Publication date: November 17, 2011
    Applicant: Kingpak Technology Inc.
    Inventors: Hsiu-Wen Tu, Han-Hsing Chen, Chung-Hsien Hsin, Ming-Hui Chen
  • Patent number: 8054457
    Abstract: A light intensity detecting device is provided to detect a light intensity according to pulse duration of a pulse signal without being affected by noise, including: a time measuring unit for measuring an elapsed time period of the pulse signal that has been raised; a signal state discriminating unit for obtaining a state of the pulse signal; a sampling unit for directing the signal state discriminating unit to obtain the state at a sampling interval corresponding to the elapsed time period; and a falling detecting unit for detecting the pulse signal that has been fallen when a fallen state of the pulse signal is successively obtained for two times. When the fallen pulse signal is detected, the sampling unit directs the signal state discriminating unit to obtain the state of the pulse signal at a time point, which is output as the pulse duration of the pulse signal.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: November 8, 2011
    Assignee: Chimei Innolux Corporation
    Inventor: Yoshikazu Matsui
  • Patent number: 8048372
    Abstract: A real-time in-situ sensor system is provided for measurement of bioluminescence and determination of bioluminescence surface signature. The system measures bioluminescence in the wake of a submerged moving object as well as ambient light levels outside of the wake. Along with measurements of depth and water-quality parameters including turbidity, temperature and salinity, the surface signature of the induced underwater bioluminescence can be calculated by considering light transmission and attenuation through water. With this real-time information, the operator of the submerged moving object can employ tactical maneuvers to affect the resultant surface signature.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: November 1, 2011
    Assignee: Oceanit Laboratories, Inc.
    Inventors: Ken C. K. Cheung, Ronald L. Seiple, Christopher J. Sullivan, Paul Pernambuco-Wise, Randy Wolfshagen, S. Maile Giffin
  • Patent number: 8049874
    Abstract: A method for measuring illuminance of a lamp utilizes at least one illuminance meter and a rotary apparatus. The lamp is installed on the rotary apparatus. The lamp emits light and projects onto an irradiation area. A measurement area is defined from within the irradiation area. The measurement area is evenly divided into n sub-measurement areas, wherein n is a natural number. The n sub-measurement areas are centrosymmetric. At least one illuminance meter measuring illuminance of the lamp is disposed on one of the n sub-measurement areas. The rotary apparatus drives the lamp to rotate 360/n° in turn. The single illuminance meter measures illuminance of the lamp in other (n?1) sub-measurement areas.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 1, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Sei-Ping Louh
  • Publication number: 20110261353
    Abstract: One aspect of this invention provides an optical probe (600) that includes: a tubular sheath (622) having a distal end that is closed; a light guiding means (623) provided inside the sheath, and arranged along the longitudinal axis of the sheath; and a light condensing means (628) that is provided on an emitting end side of the light guiding means, and that deflects an optical path of a light emitted from the emitting end to cause the light to converge on a measurement target. The optical probe (600) scans a convergent light emitted from the light condensing means (628) on a plane that is substantially orthogonal to an optical axis direction of the convergent light, and guides a light from the measurement target (5) to the light guiding means (623) via the light condensing means. The optical probe (600) also includes a cylindrical tube member (610) that has an outer circumferential wall that is integrally joined to an outer wall of the sheath (622) along the longitudinal axis direction.
    Type: Application
    Filed: December 9, 2009
    Publication date: October 27, 2011
    Applicant: FUJIFILM CORPORATION
    Inventor: Yuichi Teramura
  • Patent number: 8040501
    Abstract: An image forming apparatus includes a carrier, a forming device forming a mark on the carrier, a sensor, a determiner, a changer, an evaluator and a controller. The sensor includes a light emitting device that emits light toward the carrier and the light receiving device that receives light reflected from the carrier or the mark and outputs a light reception signal corresponding to the received light quantity. The determiner determines a position of the mark based on the light reception signal. The changer changes sensor sensitivity by changing a quantity of light from the light emitting device or sensitivity of the light receiving device. The evaluator obtains the light reception signals multiple times and evaluates a degree of closeness between an average level of the light reception signals and a target level. The controller controls the changer to change the sensor sensitivity of the sensor according to an evaluation result.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: October 18, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kentaro Murayama
  • Publication number: 20110249258
    Abstract: In an exemplary embodiment, an apparatus includes a sensor integrated circuit (IC). The at least one integrated photodetector that is adapted to sense light, and an integrated analog-to-digital converter (ADC). The integrated analog-to-digital converter (ADC) is coupled to the at least one integrated photodetector, and is adapted to convert an output signal of one or more of the at least one integrated photodetector to one or more digital signals. The sensor integrated circuit (IC) further includes an integrated controller that is adapted to facilitate operation of the sensor integrated circuit (IC).
    Type: Application
    Filed: December 30, 2010
    Publication date: October 13, 2011
    Inventors: Timothy T. Rueger, William Hong, David Andreas
  • Publication number: 20110246086
    Abstract: A method and apparatus for detecting a particular chemical in a sample, includes placing the sample in contact with a semiconductive material provided on a flow cell. An electrical characteristic of the semiconductive material is detected by an interdigitated electrode, and a first signal indicative thereof of output. An optical characteristic of the semiconductive material is detected by a photodetector and a second signal indicative thereof is output. Based on the first and second signals, it is determined by a processor as to whether or not the particular chemical is present in the sample.
    Type: Application
    Filed: December 9, 2009
    Publication date: October 6, 2011
    Applicant: SMITHS DETECTION INC.
    Inventors: Weijie Huang, James Andrew Loussaert, Timothy E.r Burch
  • Publication number: 20110242527
    Abstract: In one embodiment, a heterodyne detection system for detecting light includes a first input aperture adapted for receiving a first light from a scene input, a second input aperture adapted for receiving a second light from a local oscillator input, a broadband local oscillator adapted for providing the second light to the second input aperture, a dispersive element adapted for dispersing the first light and the second light, and a final condensing lens coupled to an infrared detector. The final condensing lens is adapted for concentrating incident light from a primary condensing lens onto the detector, and the detector is a square-law detector capable of sensing the frequency difference between the first light and the second light. More systems and methods for detecting light are disclosed according to more embodiments.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Charles G. Stevens, Joseph W. Tringe
  • Publication number: 20110228273
    Abstract: Disclosed is a method for operating a test apparatus for an LED lamp. The method includes: forming a self-holding circuit by switching on a first switching means such that an up and down shifter provided in the test apparatus for the LED lamp moves down; moving down and stopping the up and down shifter from a determined initial position to a measurement position; measuring the quality of the LED lamp equipped with the test apparatus for the LED lamp; releasing the self-holding circuit by switching on the second switching means such that the up and down shifter moves up; and moving up and down shifter from the measurement position to the determined initial position.
    Type: Application
    Filed: January 6, 2011
    Publication date: September 22, 2011
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Sungho Hong, Jang Gu Oh, Tae Young Choi, Jong Tae Park
  • Publication number: 20110231130
    Abstract: Disclosed is an apparatus for testing an LED lamp which includes: a secured seat on which the LED lamp is seated; an up and down shifter which, when the LED lamp is seated on the secured seat, shifts from an initial position spaced upward from the LED lamp to a measurement position in which the up and down shifter contacts with a socket of the LED lamp, and which supplies electric power to the LED lamp when the up and down shifter is placed in the measurement position, and a sensor sensing that the up and down shifter is placed in the measurement position; and a quality determining means determining a quality of the LED lamp based on light emitted from the LED lamp, and comprising an illuminometer or a luminance meter.
    Type: Application
    Filed: January 6, 2011
    Publication date: September 22, 2011
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Sungho Hong, Jang Gu Oh, Tae Young Choi, Jong Tae Park
  • Publication number: 20110216311
    Abstract: A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.
    Type: Application
    Filed: May 11, 2011
    Publication date: September 8, 2011
    Applicant: LI-COR, Inc.
    Inventors: Alexander Kachanov, Serguei Koulikov
  • Publication number: 20110205541
    Abstract: An optical measurement apparatus includes a hemispherical portion having a diffuse reflection layer on an inner wall, and a plane portion disposed to involve a substantial center of curvature of the hemispherical portion and close an opening of the hemispherical portion, and having a reflection layer on an inner surface side of the hemispherical portion. The plane portion includes: at least one of a window for introducing light to be homogenized in an integrating space formed between the hemispherical portion and the plane portion, and a window for extracting light homogenized in the integrating space; an outer portion formed of a first material chiefly causing specular reflection, and occupying at least a region of a predetermined width from an outermost circumference; and an inner portion formed of a second material chiefly causing diffuse reflection and having a higher reflectance for at least an ultraviolet region than the first material.
    Type: Application
    Filed: February 16, 2011
    Publication date: August 25, 2011
    Applicant: Otsuka Electronics Co., Ltd.
    Inventors: Yoshihiro OSAWA, Kazuaki Ohkubo
  • Publication number: 20110205533
    Abstract: A device connects to a male network connector of a network conduit, and connects to a female network connector of the network conduit. The female network connector is capable of communicating with the male network connector. The device also measures outputs of the male network connector and the female network connector.
    Type: Application
    Filed: May 4, 2011
    Publication date: August 25, 2011
    Applicant: VERIZON PATENT AND LICENSING INC.
    Inventors: Tiejun J. XIA, Glenn A. WELLBROCK, Timothy E. LAWTER, Robert H. MILLS, Gary E. MYRLAND
  • Publication number: 20110177619
    Abstract: This invention relates to luminescent markers for in vitro diagnostic applications, and kits using those markers. In some embodiments, those markers comprise luminescent carbon nanoparticles. Some embodiments provide a method for investigating an analyte comprising correlating a marker to the analyte and observing the luminescence from the marker, wherein the marker comprises a nanoparticle having a carbon core. In vitro kits, including those employing a marker comprising a nanoparticle having a carbon core, are also provided.
    Type: Application
    Filed: July 14, 2009
    Publication date: July 21, 2011
    Inventors: Andrew Metters, Qian Wang, Siqi Li, Hui Hu
  • Publication number: 20110169414
    Abstract: The invention relates to calibrating light emitters (4). In order to avoid blanking of a backlight and also to reduce the number of light sensors (14), it is possible to drive a plurality of light emitters to the pulsed initial driving condition (PWM1-PWM4), shift a start time (T0, T3) of the initial driving condition of a selected one of the light emitters temporally in front of start times (T1, T2) of remaining light emitters, detecting an illumination condition produced by the selected one of the light emitters at the beginning (T3) of a subsequent shifted driving condition of the selected one of the light emitters, determining an adjustment factor for the selected light emitter by comparing a detected illumination condition with a calibration illumination condition, and respectively supplying the selected light emitter with a modified driving condition comprising the initial driving condition modified by the adjustment factor.
    Type: Application
    Filed: September 15, 2009
    Publication date: July 14, 2011
    Applicant: NXP B.V.
    Inventor: Hans Schmitz
  • Publication number: 20110113799
    Abstract: An ice level sensing system for an appliance having a cavity with a cavity wall. An ice storage bin and an ice maker are disposed within the cavity. The ice storage bin is configured to hold ice discharged from the ice maker. The ice level sensing system includes a transmitter for transmitting a light beam and a detector for detecting the light beam. The transmitter and the detector are disposed on the cavity wall. A reflector is disposed relatively remote from the transmitter. The transmitter is operative to project the light beam toward the reflector. The transmitter and the detector are angled relative to each other so that the light beam reflected by the reflector is directed toward the detector.
    Type: Application
    Filed: November 13, 2009
    Publication date: May 19, 2011
    Inventors: Bryan W. Snider, Martin Nicholas Austin
  • Publication number: 20110115404
    Abstract: In various embodiments, a method for determining calibration data for a light source is provided. The method may include determining at least one of a photometric quantity and a colorimetric quantity of the light source; determining a color stimulus specification using at least one of the photometric quantity and the colorimetric quantity; and determining the calibration data as a function of the color stimulus specification and a temperature of the light source.
    Type: Application
    Filed: June 30, 2009
    Publication date: May 19, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventor: Nico Morgenbrod
  • Publication number: 20110109899
    Abstract: A method of determining the number of light sources is adapted to determine the number of each kind of light sources of an illumination device. The method includes following steps. A photon number of a single light source of each kind of the light sources is calculated. Next, a number ratio of each kind of the light sources is determined according to a power ratio of each kind of the light sources and the photon number of a single light source of each kind of the light sources. Finally, the number of each kind of the light sources is determined according to the number ratio and a total number of the light sources of the illumination device.
    Type: Application
    Filed: February 11, 2010
    Publication date: May 12, 2011
    Applicant: EVERLIGHT ELECTRONICS CO., LTD.
    Inventors: Shih-Chen Shi, Yi-Ting Chao, Yu-Ju Liu
  • Publication number: 20110107853
    Abstract: Included are systems and methods for determining a fill level of an inflow-less flexible medicine reservoir as a source for medicine, where the inflow-less flexible medicine reservoir has a monotonically decreasing fill level. Some embodiments of a device include a stop surface designed and arranged such that the stop surface contacts the inflow-less flexible medicine reservoir while the inflow-less flexible medicine reservoir is filled above a predetermined level. Similarly, some embodiments of the device additionally include a release detector that generates an output signal indicative of contact between the stop surface and the inflow-less flexible medicine reservoir being released and a processing unit for determining the fill level of the inflow-less flexible medicine reservoir from an output signal of the release detector.
    Type: Application
    Filed: November 10, 2010
    Publication date: May 12, 2011
    Applicant: ROCHE DIAGNOSTICS INTERNATIONAL LTD
    Inventor: Gerald Studer
  • Patent number: 7940381
    Abstract: A semiconductor nanowire is coated with a chemical coating layer that selectively attaches to the semiconductor material and which forms a dye in a chemical reaction. The dye layer comprises a material that absorbs electromagnetic radiation. A portion of the absorbed energy induces electronic excitation in the chemical coating layer from which additional free charge carriers are temporarily donated into the semiconductor nanowire. Thus, the conductivity of the semiconductor nanowire increases upon illumination on the dye layer. The semiconductor nanowire, and the resulting dye layer collective operate as a detector for electromagnetic radiation.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: May 10, 2011
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Lidija Sekaric
  • Publication number: 20110101887
    Abstract: A method and apparatus are provided for viewing a subject. The method includes the steps of providing a predetermined visual contrast among image details of the subject and maintaining the visual contrast for a predetermined time period of less than 100 milliseconds.
    Type: Application
    Filed: April 14, 2009
    Publication date: May 5, 2011
    Applicant: Catholic Healthcare West
    Inventor: Stephen L. Macknik
  • Patent number: 7933010
    Abstract: An optical tomography system for viewing an object of interest includes a microcapillary tube viewing area for positioning the object of interest in an optical path including a detector. A motor is located to attach to and rotate a microcapillary tube. A device is arranged for transmitting broadband light having wavelengths between 550 nm and 620 nm into the microcapillary tube viewing area. A hyperchromatic lens is located to receive light transmitted through the microcapillary tube viewing area. A tube lens is located to focus light rays transmitted through the hyperchromatic lens, such that light rays from multiple object planes in the microcapillary tube viewing area simultaneously focus on the at least one detector.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: April 26, 2011
    Inventors: J. Richard Rahn, John W. Hayenga
  • Patent number: 7933009
    Abstract: Embodiments of methods and apparatus for detecting the proper position of a substrate in a chamber are provided herein. In some embodiments, a substrate position detection apparatus includes a substrate support having a plurality of lift pins for supporting a substrate in an elevated position thereover; a light source for directing a beam of light upon a reflective upper surface of the substrate; and a light sensor for detecting a reflected beam of light from the upper surface of the substrate upon the substrate being aligned in a predetermined elevated position.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: April 26, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Oleg Serebryanov, Alexander Lerner, Aaron Hunter, Joseph M. Ranish
  • Publication number: 20110090488
    Abstract: An actuator rod position indication device is described, where a unit having a separate enclosing housing on one surface of said housing has mounted a magnetic field sensor, such that a magnet provided on an actuator rod's free end will be moved substantially linearly closer to and further from said sensor during operation of the actuator, where the sensor detects the magnetic field strength between the magnet on the actuator rod and the sensor and uses this information as input in a processor, comprising a storage, in which storage pre-defined activation values are stored, such that when the input corresponds to one of the stored values, an output specific to that value is generated.
    Type: Application
    Filed: June 4, 2009
    Publication date: April 21, 2011
    Inventors: Jens Christian Folkmar Andersen, Karsten Schack Madsen, Kenneth Rehhoff
  • Patent number: 7920256
    Abstract: A printing medium detecting device capable of accurately detecting an amount of printing media in a paper cassette, an image forming apparatus including the printing medium detecting device, and a method to detect a printing medium. The printing medium detecting device of the image forming apparatus includes a light source to emit a light beam to one side of a stack of printing media housed in a paper cassette, a scanning unit to scan the light beam reflected from the stack and generate a signal based on the light beam, and a computing unit to compute information related to the stack based on the signal, wherein the information includes a number of printing media sheets in the stack.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: April 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-il Lee, Jong-kyu Kim
  • Publication number: 20110077883
    Abstract: Provided is a measurement method of Fourier coefficients using an integrating photometric detector, wherein, when measuring an exposure (Sj) with a predetermined time interval during a predetermined time period using an integrating photometric detector with respect to light of which amplitude varies with the time period, normalized Fourier coefficients (??2n, ??2n) for a waveform of an intensity of the light is determined by carrying out a discrete Fourier transform with respect to an equation for the measured exposure (Sj).
    Type: Application
    Filed: July 21, 2010
    Publication date: March 31, 2011
    Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE
    Inventors: Yong Jai CHO, Won CHEGAL, Hyun Mo CHO
  • Publication number: 20110075969
    Abstract: An exemplary apparatus includes ferrule offset assemblies each having opposing ferrules with respective ends and respective fiber channels maintained in general relative and adjustable alignment. Offset adjusting devices adjust the relative alignment of the fiber channels to create at least one select fiber channel alignment offset. Respective multimode fibers are disposed in the fiber channels and have a fiber alignment corresponding to the fiber channel alignment. One of the multimode fibers has an end configured to optically couple to a launch multimode fiber, which is connected to a device having a light source. The multimode fiber receives light from the launch multimode fiber so that at least some of the light passes through to the other multimode fiber and then to a power meter. Power measurements for different fiber offsets are then compared to established attenuation values.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Inventors: Timothy S. Cline, Wesley A. Yates
  • Publication number: 20110061445
    Abstract: A sensor arrangement includes an optical sensor, a non-optical sensor, a sensor holder, and main and flexible interconnect devices. The sensor arrangement can be fixed to a vehicle window by the sensor holder. The sensor holder is in the form of a sensor housing having a sensor housing cover and a second housing body attached to one another. The sensor housing cover and the sensor housing body each have corresponding bracket sections which form a bracket connected to the sensor housing. The main interconnect device is positioned within the sensor housing. The optical sensor is connected to the main interconnect device. The flexible interconnect device is connected to the main interconnect device and extends from the main interconnect device to the bracket connected to the sensor housing. The non-optical sensor is connected to the flexible interconnect device within the bracket and is held by the bracket.
    Type: Application
    Filed: November 8, 2010
    Publication date: March 17, 2011
    Applicant: LEOPOLD KOSTAL GMBH & CO. KG
    Inventors: Michael Roehr, Thomas Weber, Frank Hagen
  • Patent number: 7907266
    Abstract: A radiometer the calibration of collimated pulsed laser sources. In one embodiment the laser sources have wavelengths of 1064 nm and 1540-1570 nm wavelengths at irradiance levels of 7×10?5 to 5×1010 Watts/cm2, with pulse widths of 5-400 ns. A lens system used to focus beams from the laser sources includes two piano convex lenses and one aspheric lens, all with 1.5 micron and 1.06 micron anti-reflection coatings. An InGaAs avalanche photodiode (APD) detector and a linear amplifier generate an output voltage which represents the pulse and power of the input laser. The output voltage is captured on a fast oscilloscope and converted to irradiance through NIST calibration factors. The detector is kept at a constant predetermined temperature with a heater ring and feedback circuit. The detector is mounted on a translation stage for placing the detector at the proper position for the 1064 nm and 1540-1570 nm wavelengths.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: March 15, 2011
    Assignees: The United States of America as represented by the Secretary of the Department of Commerce, The United States of America as represented by the Secretary of the Navy
    Inventors: Daniel Wayne King, Rodney William Leonhardt
  • Patent number: 7907261
    Abstract: An optical axis inspection apparatus is provided with: a camera for capturing a light distribution pattern of a light source device projected on a screen; an image processing device for finding a cutoff line in the light distribution pattern; an acceptance reference cutoff line setting unit; and a shade having an oblong slit and arranged to be opposed to a projection lens of the projection type light source device. Whether or not an optical axis is proper is inspected based oh a shift of the cutoff line with respect to the acceptance reference cutoff line. Only a transmissive light passing through a substantially central portion in a vertical direction of a projection lens including an optical axis of the projection lens is guided onto the screen by the shade.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: March 15, 2011
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Tetsuaki Inaba
  • Patent number: 7902534
    Abstract: A system having a multiple-mirror ring-down cavity with one mirror where light may be input into the cavity and light from the cavity may be detected. A valve may permit light to enter or not to enter the cavity. An amplifier may be connected to a detector for detecting light from the cavity. The amplifier may be off or set at a low gain when light is entering the cavity and be on at a medium or high gain at a time when light is not entering the cavity.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: March 8, 2011
    Assignee: Honeywell International Inc.
    Inventors: Barrett E. Cole, James Allen Cox, Terry Marta, Carl Anderson, Rodney Thorland