Prism Engaging Specimen Patents (Class 356/135)
  • Patent number: 10281408
    Abstract: An inspection object imaging apparatus includes: a light source configured to produce a light beam belonging to an infrared wavelength band and having a predetermined spread half-angle on a surface of an inspection object; a projection optical system to project the light beam on the surface of the inspection object at a predetermined projection angle; and an imaging unit. The imaging unit includes an imaging optical system configured to condense reflected light and branch the reflected light to two different directions, and a first image sensor and a second image sensor, the first image sensor positioned on the inspection object side with respect to a position of the imaging optical system that is conjugate with the surface of the inspection object, along an optical axis of the reflected light, and the second image sensor positioned on the reflected-light travel direction side with respect to the conjugate position.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: May 7, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yusuke Konno, Takamichi Kobayashi, Toshio Akagi, Atsuhiro Hibi, Nobuhiro Furuya, Akihito Nakazaki
  • Patent number: 10113960
    Abstract: An exemplary arrangement includes a prism-shaped measuring window, which has a measuring surface adapted to contact a substance being measured. A first surface is adapted to direct light originating from a light source to the measuring surface through the measuring window. A second surface is adapted to direct totally reflected light from an interface between the measuring surface in contact with the substance being measured and a substance being measured outside of the measuring window. A first lens arrangement is adapted to focus the light from the light source on the first surface. A second lens arrangement is adapted to focus the totally reflected light passing through the second surface to a device used for analysis. A lens in each of the first and second lens arrangements closest to the measuring window is integrated into the measuring window and establishes optical refractive power in the first and second surfaces.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: October 30, 2018
    Assignee: JANESKO OY
    Inventor: Esko Kamrat
  • Patent number: 9983064
    Abstract: Apparatus and methods for measuring mode spectra for ion-exchanged glass substrates having a steep index region are disclosed. An interfacing fluid is provided between the coupling prism and the glass substrate. The interfacing fluid thickness is selected so that the variation in modal birefringence with fluid thickness is reduced to an acceptable level. The coupling prism can include a prism coating on the coupling surface so that the substrate-prism interface includes the prism coating. The coupling prism can also include stand-off members that serve to define the thickness of the interfacing fluid.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: May 29, 2018
    Assignee: CORNING INCORPORATED
    Inventors: Rostislav Vatchev Roussev, Vitor Marino Schneider
  • Patent number: 9785396
    Abstract: A mobile device includes a main body, a display secured to the main body, and at least one refractor integrated with the display. The main body includes a storage device, a controller, and a switch unit coupled to the controller. A video content is stored in the storage device, and a switch unit is used to open or close the controller. The at least one refractor is used to define at least one projection region. When the controller is opened by the switch unit, the video content is divided into a plurality of video segments to be played on the display and the at least one projection region, and when the controller is closed by the switch unit, the video content is displayed on the display.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: October 10, 2017
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., HON HAI PRECISION CO., LTD.
    Inventor: Yu Liang
  • Patent number: 9733182
    Abstract: In one aspect, an apparatus for determining a property of a fluid is disclosed that in one embodiment may include a transparent member having an axis and a first end substantially perpendicular to the axis and a second end having an outer surface at a first angle to the axis, a light source directing light at the first end, a detector placed spaced from the second end, the space between the second end and the detector containing a fluid, wherein the detector detects light exiting from the outer surface at a second angle to the axis and passing through the fluid, and a controller for determining the second angle from the light detected by the detector. A processor determines the bulk fluid refractive index from the light detected by the detector and a property of the fluid therefrom.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: August 15, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Rocco DiFoggio, Thomas Kruspe, Sebastian Jung
  • Patent number: 9726541
    Abstract: A sensor for monitoring a medium has an electromagnetic radiation source, mirrors, and a detector for electromagnetic radiation arranged inside a cup-shaped housing part. The cup-shaped part has flat, angularly arranged wall areas defining a cavity in which, outside of the housing, the medium is contained. The flat wall areas are transparent for electromagnetic radiation and arranged in the beam path from the electromagnetic radiation source to the detector so that the electromagnetic radiation passes through first wall, medium in the cavity, and second wall. The first and second wall areas and the medium form a refracting prism. A cover closes off the cup-shaped part so that electromagnetic radiation source, detector, and mirrors are enclosed in the housing. A data processing system is connected to electromagnetic radiation source and detector so that electromagnetic radiation of different wavelengths is refracted in the prism and the resulting spectra are detected and evaluated.
    Type: Grant
    Filed: December 20, 2015
    Date of Patent: August 8, 2017
    Assignee: AB Elektronik Sachsen GmbH
    Inventors: Aldo Bojarski, Klaus Erler, Katrin Künzelmann, Andre Legner, Paul Smith, Tobby Straβberger
  • Patent number: 9632025
    Abstract: Method and device for measuring the Abbe number in a process liquid. Light generates successively at wavelengths of 486.1 nm, 589.3 nm and 656.3 nm and different light wavelengths are directed successively through a measuring window in the process liquid so total reflection occurs at each wavelength on the measuring window surface and process liquid. Partial light reflected at each wavelength is directed to a sensor, whereby an image forms on the sensor surface; between light and dark boundary region corresponding to each wavelength critical angle, in which total reflection occurs. At each wavelength between light and dark boundary region detection by image analysis. At each wavelength, dependency between light and dark boundary region and refractive-index of process liquid measurement is detected, the Abbe number by refractive-index values obtained from: V D = n D - 1 n F - n C ; nD=refractive-index of process liquid to measure at 589.3 nm; nF=refractive-index at 486.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: April 25, 2017
    Assignee: JANESKO OY
    Inventor: Esko Kamrat
  • Patent number: 9632023
    Abstract: A V-block refractometer capable of enhancing measurement accuracy is provided. An incident angle of measurement light incident on a V-block prism 1 from a collimator lens 48 is changed through the rotation of a motor 7, and the measurement light from the V-block prism 1 at each incident angle is detected by a detector 2. This configuration eliminates the need to provide the detector 2 near the motor 7 as in the conventional art, whereby deterioration in measurement accuracy caused by an increase in load to the motor 7 can be prevented, and the measurement accuracy can be enhanced.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: April 25, 2017
    Assignee: SHIMADZU CORPORATION
    Inventors: Katsuto Yamada, Naoya Kondo
  • Patent number: 9588051
    Abstract: The present invention relates to optical confinements, methods of preparing and methods of using them for analyzing molecules and/or monitoring chemical reactions. The apparatus and methods embodied in the present invention are particularly useful for high-throughput and low-cost single-molecular analysis.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: March 7, 2017
    Assignee: Pacific Biosciences of California, Inc.
    Inventors: Stephen Turner, Jonas Korlach
  • Patent number: 9194798
    Abstract: Refractometers for simultaneously measuring refractive index of a sample over a range of wavelengths of light include dispersive and focusing optical systems. An optical beam including the range of wavelengths is spectrally spread along a first axis and focused along a second axis so as to be incident to an interface between the sample and a prism at a range of angles of incidence including a critical angle for at least one wavelength. An imaging detector is situated to receive the spectrally spread and focused light from the interface and form an image corresponding to angle of incidence as a function of wavelength. One or more critical angles are identified and corresponding refractive indices are determined.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: November 24, 2015
    Assignee: UT-Battelle, LLC
    Inventors: Justin S. Baba, Philip R. Boudreaux
  • Patent number: 9103778
    Abstract: An image-based refractive index measuring system comprises an optical device and an electronic device. The optical device is used to guiding an external light which is passed through an analyte. The electronic device comprises an image capture module, an image analyze module and a display module. The image capture module generates a first image by capturing the external light source. The image analyze module connects to the image capture module to receive the first image, and analyzes the first image in order to generate an analytical result comprising the refractive index of the analyte. The display module connects to the image analyze module to receive and display the analytical result.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 11, 2015
    Assignee: National Applied Research Laboratories
    Inventors: Tai-Shan Liao, Chi-Hung Huang, Chih-Chieh Wu, Din Ping Tsai, Shih-Jie Chou, Cheng-Fang Ho
  • Patent number: 8947650
    Abstract: In a refractive index measuring device (1) for measuring a refractive index of a solid sample (S), the solid sample (S) is closely attached to a prism (3) having a predetermined refractive index with a refractive index liquid (4) having a predetermined refractive index interposed therebetween. A scaled angle (light receiving member) (6) having a light receiving surface (6a) that receives first reflected light (R1), which is a part of light from a light source (2) and which is reflected by the prism (3), is provided. When the prism (3) is rotationally driven by a rotary table (rotational drive unit) (5) and an intensity of second reflected light (R2) detected by a detector (7) becomes lower than a predetermined value, the refractive index of the solid sample (S) is measured by using a position of the first reflected light (R1) on the light receiving surface (6a) of the scaled angle (6).
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: February 3, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hirotoshi Yasunaga, Koji Yamabuchi, Takeshi Ishida
  • Patent number: 8937721
    Abstract: A detection device is disclosed which includes: a detection plate in which a silicon layer and a silicon oxide layer are arranged in this order on a silica glass substrate; and optical prism which is optically adhered to a surface of the silica glass substrate of the detection plate, where the surface is not provided with the silicon layer and the silicon oxide layer; a light-irradiation unit configured to irradiate light to the detection plate through the optical prism and arranged so that light is incident on the optical prism with a fixed incident angle; and a light-detection unit configured to detect intensity of reflected light reflected from the detection plate, wherein the detection device detects a change in dielectric constant by detecting a change in property of the reflected light.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: January 20, 2015
    Assignees: National Institute of Advanced Industrial Science and Technology, Shin-Etsu Chemical Co., Ltd.
    Inventors: Makoto Fujimaki, Shoji Akiyama, Kazutoshi Nagata
  • Patent number: 8934102
    Abstract: A system and method for measuring the quality of a fluid includes an optical body forming a measurement surface configured for contacting the fluid to be measured; a light source for projecting radiant energy into the optical body and toward the measurement surface at a predetermined angle; an optical sensor module arranged for detecting an image of at least reflected radiant energy from the measurement surface, the optical sensor module includes a two-dimensional array of light sensors or pixels, each pixel having a plurality of brightness levels; and a processor for setting a brightness threshold value, comparing the threshold value to the brightness level of each pixel, and counting the number of pixels above and/or below the brightness threshold value.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: January 13, 2015
    Assignee: Intellectual Reserves, LLC
    Inventors: Alvin R Wirthlin, Leon Brown
  • Patent number: 8760640
    Abstract: An optical instrument includes a controller and a field head arranged for measuring the refractive index of a medium, or a derivable quantity therefrom. The field head includes a measurement prism having a medium-boundary surface, a first wave guide for providing broad-band light from a broad band light source, a dispersive element for dispersing the broad-band light into at least one component light beam of plural component light beams, so that each incident component light beam has a differently directed propagation path and at least one different wave length, and a condenser for collecting at least one component light beam reflected at the medium-boundary surface into a second wave guide. The dispersive element is arranged to direct at least one component light beam into a critical angle of total reflection from the boundary surface, and at least other light beam component into an angle leading into the condenser arranged to collect at least one other component light beam to be passed to a spectrometer.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: June 24, 2014
    Inventor: Jan Kåhre
  • Publication number: 20140104601
    Abstract: Refractometers for simultaneously measuring refractive index of a sample over a range of wavelengths of light include dispersive and focusing optical systems. An optical beam including the range of wavelengths is spectrally spread along a first axis and focused along a second axis so as to be incident to an interface between the sample and a prism at a range of angles of incidence including a critical angle for at least one wavelength. In some cases, the prism can have a triangle, parallelogram, trapezoid, or other shape. In some cases, the optical beam can be reflected off of multiple interfaces between the prism and the sample. An imaging detector is situated to receive the spectrally spread and focused light from the interface and form an image corresponding to angle of incidence as a function of wavelength. One or more critical angles are identified and corresponding refractive indices are determined.
    Type: Application
    Filed: December 11, 2013
    Publication date: April 17, 2014
    Applicant: UT-Battelle, LLC
    Inventor: Justin S. Baba
  • Patent number: 8692985
    Abstract: Methodology of determining refractive index and extinction coefficient of a prism shaped material, including simultaneously for a multiplicity of wavelengths using an easy to practice technique.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: April 8, 2014
    Assignee: J.A. Woollam Co., Inc.
    Inventors: Ronald A. Synowicki, Greg K. Pribil, Andrew C. Martin
  • Publication number: 20130242115
    Abstract: Refractometers for simultaneously measuring refractive index of a sample over a range of wavelengths of light include dispersive and focusing optical systems. An optical beam including the range of wavelengths is spectrally spread along a first axis and focused along a second axis so as to be incident to an interface between the sample and a prism at a range of angles of incidence including a critical angle for at least one wavelength. An imaging detector is situated to receive the spectrally spread and focused light from the interface and form an image corresponding to angle of incidence as a function of wavelength. One or more critical angles are identified and corresponding refractive indices are determined.
    Type: Application
    Filed: February 15, 2013
    Publication date: September 19, 2013
    Applicant: UT-BATTELLE, LLC
    Inventors: Justin S. Baba, Philip R. Boudreaux
  • Patent number: 8528399
    Abstract: A flow-through sensing apparatus includes a flow-head and a sensor that are configured to be selectively coupled through use of a quick-disconnect mechanical coupling. When the sensor is coupled with the flow-head, the sensor cooperates with the flow-head to at least partially define a sensing chamber. The sensor is configured to determine a process parameter, such as refractive index, regarding a substance in the sensing chamber.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: September 10, 2013
    Assignee: The Mercury Iron and Steel Co.
    Inventors: Michael D. Rainer, Peter J. Gillespie, Douglas J. Paige, Kenneth J. Maynard
  • Publication number: 20130182245
    Abstract: In a refractive index measuring device (1) for measuring a refractive index of a solid sample (S), the solid sample (S) is closely attached to a prism (3) having a predetermined refractive index with a refractive index liquid (4) having a predetermined refractive index interposed therebetween. A scaled angle (light receiving member) (6) having a light receiving surface (6a) that receives first reflected light (R1), which is a part of light from a light source (2) and which is reflected by the prism (3), is provided. When the prism (3) is rotationally driven by a rotary table (rotational drive unit) (5) and an intensity of second reflected light (R2) detected by a detector (7) becomes lower than a predetermined value, the refractive index of the solid sample (S) is measured by using a position of the first reflected light (R1) on the light receiving surface (6a) of the scaled angle (6).
    Type: Application
    Filed: September 9, 2011
    Publication date: July 18, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hirotoshi Yasunaga, Koji Yamabuchi, Takeshi Ishida
  • Patent number: 8462326
    Abstract: The invention discloses the Schlieren type ultrasonic wave observer system. The invention states optics interference by the ultrasonic wave sound field after perturbation the medium, and combines to make the interference penetration optical projection the image, the goal lies in the observation ordinary naked eye blind ultrasonic wave sound field distribution. Characteristic of the invention using the spectroscope and the reflector combination, as well as microcontroller precise time delay control, might formerly be limited under the 4F optical field length limit to enhance largely the field of vision the several fold.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: June 11, 2013
    Assignee: Chang Gung University
    Inventors: Hao-Li Liu, Chung-Cheng Kung, Ting-Chia Chang
  • Patent number: 8422006
    Abstract: A system for testing a lens module is provided. The lens module includes a barrel and a lens received in the barrel. The barrel includes a side surface which is parallel to the central axis thereof. The lens includes a smooth flat non-optical surface. The system includes an alignment device, a position detection device, and a processing device. The alignment device includes a leveling unit and an alignment block including an alignment surface for being in contact with and parallel to the side surface. The leveling unit adjusts the alignment surface to be perpendicular to a horizontal plane such that the side surface is perpendicular to the horizontal plane. The position detection device determines the three dimensional coordinates of three non-collinear points on the non-optical surface. The processing device determines whether the non-optical surface is parallel to the horizontal plane according to the coordinates of the three non-collinear points.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: April 16, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Cheng-Shiun Wu
  • Patent number: 8239144
    Abstract: A portable liquid design system includes a portable information handling system (IHS) that employs a liquid design application capable of operating in different modes to design different liquids such as corn syrup, espresso, coffee, soda pop and others. The portable liquid design system may include a refractometer to measure the refractive index and temperature of a liquid under test. The liquid design application may apply the measured refractive index and temperature to a 3 dimensional representation of the correlation of refractive index, temperature and concentration (% total dissolved solids) to determine a particular concentration corresponding to the measured refractive index and temperature. A single 3 dimensional scale may apply to virtually all values of interest of refractive index, temperature and concentration for a particular liquid under test.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: August 7, 2012
    Assignee: Voice Systems Technology, Inc.
    Inventor: Vincent Fedele
  • Patent number: 8212868
    Abstract: A jewelry fixture having a mounting pedestal cooperatively engaged with the top side of a base is disclosed. First and second angled surface are cooperatively positioned on the top side of the base. The angled surfaces have a reflective or mirrored surface. The angled surfaces are positioned adjacent and perpendicular to each other. A jewelry holder allowing cooperative engagement with an item of jewelry is positioned between the angled surfaces and cooperatively engaged with the mounting pedestal on the top side of the base. The base has reference and prime positioning guides. The full-image jewelry positioner (fixture) improves the development of images for duplication or replication of jewelry or other items having detailed structures. When combined with a camera or a camera and a computer system, the images developed may be captured and manipulated for auto-tracing and duplication or replication of the item of jewelry.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: July 3, 2012
    Assignee: Gemvision Corporation, L.L.C.
    Inventor: Jeffrey L. High
  • Patent number: 8174699
    Abstract: A system for detecting the presence of one or more fluids in a rotating component of a gas turbine engine. A first reflector structure includes a first face that receives light from the light source. The first reflector structure reflects at least a substantial portion of the received light from the light source if a second face thereof is in the presence of a first fluid and does not reflect a substantial portion of the received light from the light source if the second face is in the presence of a second fluid. A reflection receiver structure receives light reflected by the first reflector structure. If the reflection receiver structure receives a first predetermined amount of light reflected by the first reflector structure it can be determined that the second face of the first reflector structure is not in the presence of the second fluid.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: May 8, 2012
    Assignee: Siemens Energy, Inc.
    Inventor: Erwan Baleine
  • Patent number: 8040499
    Abstract: A transmitted light refractometer allows high measurement accuracy across a broad measurement range, even under difficult measuring conditions. The transmitted light refractometer can be connected to a process simply via a single access. In accordance with advantageous features, the transmitted light refractometer covers a measurement range for all practically relevant media and includes integrated temperature compensation. A reversing optics unit is arranged relative to an illumination optics unit such that the reversing optics unit deflects a parallel beam through the process liquid and a measurement prism into the transmitted light refractometer back to the side from which it was radiated. The illumination optics unit, an imaging optics unit, and a detector plane are arranged on the light radiation side such that only one process access is needed.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: October 18, 2011
    Assignee: Flexim Flexible Industriemesstechnik GmbH
    Inventor: Andreas Gloeckner
  • Publication number: 20110194109
    Abstract: An optical instrument includes a controller and a field head arranged for measuring the refractive index of a medium, or a derivable quantity therefrom. The field head includes a measurement prism having a medium-boundary surface, a first wave guide for providing broad-band light from a broad band light source, a dispersive element for dispersing the broad-band light into at least one component light beam of plural component light beams, so that each incident component light beam has a differently directed propagation path and at least one different wave length, and a condenser for collecting at least one component light beam reflected at the medium-boundary surface into a second wave guide. The dispersive element is arranged to direct at least one component light beam into a critical angle of total reflection from the boundary surface, and at least other light beam component into an angle leading into the condenser arranged to collect at least one other component light beam to be passed to a spectrometer.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 11, 2011
    Inventor: Jan kåhre
  • Patent number: 7916285
    Abstract: Certain embodiments of the present invention provide a refractometer including: a housing having an immersion portion, the immersion portion having an opening; a light source for emitting a light; a light sensor for converting a received light into an electrical signal; a prism including faces, including: a first face proximal to the light source and the light sensor; a second face, at least a portion of the second face configured for contacting a sample liquid through the opening, and for forming an interface between the second face and the sample liquid; and a third face, wherein the light travels by: being directed towards the second face; being reflected at least in part by the interface towards the third face; and being reflected at least in part by the third face towards the light sensor. In an embodiment, the refractometer further includes a control portion for receiving the electrical signal, and for determining a refractive index of the sample liquid based at least in part on the electrical signal.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: March 29, 2011
    Assignee: Atago Co., Ltd.
    Inventors: Hideyuki Amamiya, Yoshinori Nakashima, Kiminori Sekiguchi, Junichi Matsumoto, Yoshiaki Torigoe
  • Patent number: 7769192
    Abstract: A speaker system comprising a magnetic circuit, a cylindrical shaped voice coil unit generating oscillation in the magnetic circuit, an oscillating plate extending in a circular conical shape from a outer peripheral surface of the voice coil unit, a dust cap connecting to the oscillating plate covering an open face of the voice coil unit on a side surrounded by the oscillating plate, a plurality of linking members connecting to the voice coil unit, and a detection unit. The link members extend toward a center axis of the voice coil unit. The detecting unit further comprises a first component part fastened to the linking members and positioned at the center axis of the voice coil unit closer to the voice coil unit side than the dust cap, and a second component part positioned facing the first component part and is independent of the voice coil unit such that the second component part is held between the first component part and the dust cap.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: August 3, 2010
    Assignee: Roland Corporation
    Inventors: Masayuki Takagi, Kosuke Takata, Yoshihiro Ikegami
  • Patent number: 7684024
    Abstract: A swept-angle SPR measurement system deflects an optical beam over a range of deflection angles according to a control signal and maps the deflected beam to a target within a range of incidence angles that corresponds to the range of deflection angles.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: March 23, 2010
    Assignee: Agilent Technologies, Inc.
    Inventors: Gregory D. VanWiggeren, Douglas M. Baney
  • Patent number: 7655475
    Abstract: The invention provides a luminescent based sensor having a luminescent material optically coupled to a substrate, and adapted to be used in a medium or environment such as water or air. A detector is provided to detect light that is emitted into the substrate by the material. The substrate is adapted to redirect light that is emitted into the substrate at angles with the range ?esc ? ? ? ?lsc where ?esc is the critical angle of the environment/substrate interface and ?lsc is the critical angle of the luminescent layer/substrate interface. Examples of possible configurations are described.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: February 2, 2010
    Assignee: Fluorocap Limited
    Inventors: Brian MacCraith, Lubos Polerecky
  • Patent number: 7619724
    Abstract: The device for detecting changes in the refractive index of a dielectric medium comprises: at least one metallic layer (300) ready to be placed in contact with the dielectric medium (200); at least one light source (20) configured to direct transversal magnetic (TM) polarized light towards such metallic layer, so that the light is reflected on such metallic layer; coupling means (10); and at least one detector (31) configured to receive light reflected by the metallic layer and to detect at least one feature of such light. According to the invention, the metallic layer contains a ferromagnetic material. The invention also relates to a method.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: November 17, 2009
    Assignee: Consejo Superior de Investigaciones Cientificas
    Inventors: Borja Sepulveda Martinez, Gaspar Armelles Reig, Laura M. Lechuga Gomez, Ana Calle Martin
  • Patent number: 7619723
    Abstract: A refractometer is disclosed having a light source and an optical window to be positioned in a process liquid. A beam of rays is directed from the light source to an interface (RP) between the process liquid and the optical window and leading back part of the beam of rays refracted from the interface to the inside of the optical window. An image formed in the above manner is observed. The beam of rays from the light source is directed to the interface (RP) between the process liquid and the optical window from the side of the process liquid and in the direction of the interface.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: November 17, 2009
    Assignee: Janesko Oy
    Inventor: Harri J. Salo
  • Patent number: 7605361
    Abstract: A fuel property detection device for detecting a property of fuel based on a detection signal output from a photoreceptor includes a light guiding member having a reflecting surface located in direct contact with the fuel. The light guiding member includes a light emitting surface through which measurement light from a light source is emitted from the light guiding member into the fuel, a light incident surface through which the measurement light emitted from the light emitting surface and passing through the fuel enters again the light guiding member, and the reflecting surface from which the measurement light incident from the light incident surface is reflected toward the photoreceptor. The light incident surface and the light emitting surface are opposite to each other to have a space therebetween in the light guiding member, and the space is provided to be filled with the fuel.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: October 20, 2009
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Akikazu Uchida, Masao Kano, Noriyasu Amano
  • Publication number: 20090046277
    Abstract: Certain embodiments of the present invention provide a refractometer including: a housing having an immersion portion, the immersion portion having an opening; a light source for emitting a light; a light sensor for converting a received light into an electrical signal; a prism including faces, including: a first face proximal to the light source and the light sensor; a second face, at least a portion of the second face configured for contacting a sample liquid through the opening, and for forming an interface between the second face and the sample liquid; and a third face, wherein the light travels by: being directed towards the second face; being reflected at least in part by the interface towards the third face; and being reflected at least in part by the third face towards the light sensor. In an embodiment, the refractometer further includes a control portion for receiving the electrical signal, and for determining a refractive index of the sample liquid based at least in part on the electrical signal.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 19, 2009
    Inventors: Hideyuki Amamiya, Yoshinori Nakashima, Kiminori Sekiguchi, Junichi Matsumoto, Yoshiaki Torigoe
  • Publication number: 20090015822
    Abstract: A fuel property detection device for detecting a property of fuel based on a detection signal output from a photoreceptor includes a light guiding member having a reflecting surface located in direct contact with the fuel. The light guiding member includes a light emitting surface through which measurement light from a light source is emitted from the light guiding member into the fuel, a light incident surface through which the measurement light emitted from the light emitting surface and passing through the fuel enters again the light guiding member, and the reflecting surface from which the measurement light incident from the light incident surface is reflected toward the photoreceptor. The light incident surface and the light emitting surface are opposite to each other to have a space therebetween in the light guiding member, and the space is provided to be filled with the fuel.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 15, 2009
    Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Akikazu Uchida, Masao Kano, Noriyasu Amano
  • Publication number: 20080309937
    Abstract: Method and system for identification of a changed state of a fluid with respect to a reference state of the same fluid, the fluid having an optical parameter changing with the change of the state of the fluid. The method comprises: a) providing an optical arrangement including a transparent enclosure with a portion of the fluid, and an object observable through the optical arrangement, the arrangement being designed such that an image of the object in the changed state of the fluid is optically distinctive from an image of the object in the reference state of the fluid due to change of the optical parameter, at least one of the images being predetermined; b) illuminating the object with diffuse light; c) observing a current image of the object though the optical arrangement along an optical axis; and d) comparing the current image to the predetermined image to identify the changed state of the fluid. The comparison and the identification may be performed by eye or by a sensor with a logical circuit.
    Type: Application
    Filed: November 24, 2003
    Publication date: December 18, 2008
    Applicant: Qualisense Technologies Ltd.
    Inventor: Livne Gan
  • Patent number: 7369221
    Abstract: A portable refractometer is provided that includes a lens barrel having a lens barrel axis. A prism is secured to one end of the lens barrel, the prism having an entry face that provides a boundary surface between the prism and a substance to be measured. A tube shaped optical chassis is inside the lens barrel, and is rotatably supported about a predetermined rotational axis perpendicular to the lens barrel axis. An objective lens is arranged in the optical chassis, and is positioned in relation to the optical chassis. An optical scale is arranged inside the optical chassis, at the focal point of the objective lens. A mover moves the objective lens relatively in relation to the optical scale in response to changes in temperature by turning the optical chassis about the rotational axis.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: May 6, 2008
    Assignee: Atago Co., Ltd.
    Inventors: Hideyuki Amamiya, Yasuhiko Amagasa, Takeshi Kubodera, Mitsuru Murata
  • Patent number: 7349092
    Abstract: A system for determination of optical constants of liquids, including provision for reducing stress induced effects while obtaining data.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: March 25, 2008
    Assignee: J.A. Woollam Co., Inc
    Inventors: Thomas E. Tiwald, John A. Woollam, Galen L. Pfeiffer, Blaine D. Johs, Craig M. Herzinger
  • Patent number: 7327445
    Abstract: An improved surface plasmon resonance (SPR) sensor is provided based on direct measurement of the Goos-Hänchen effect. Sensor sensitivity is enhanced by selecting the thickness of the metallic layer of the SPR sensor to be close to a critical thickness dcr where the effect of the surface plasmon resonance on the Goos-Hänchen shift is most pronounced. Overall sensor sensitivity is surprisingly found to improve with this approach, even though the measurement is based on a second order effect (i.e., the Goos-Hänchen shift) instead of the first order reflectance change measured in conventional SPR sensor approaches. The invention is also applicable to sensors based on measurements of other non-specular reflection parameters, such as temporal shifts, frequency shifts, and/or angular shifts.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: February 5, 2008
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Xiaobo Yin, Lambertus Hesselink
  • Patent number: 7317519
    Abstract: A swept-angle SPR measurement system deflects an optical beam over a range of deflection angles according to a control signal and maps the deflected beam to a target within a range of incidence angles that corresponds to the range of deflection angles.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: January 8, 2008
    Assignee: Agilent Technologies, Inc.
    Inventors: Gregory D. VanWiggeren, Douglas M. Baney
  • Patent number: 7297961
    Abstract: The present invention relates, in general, to a fluorescence microscope and method of observing samples using the microscope and, more particularly, to a fluorescence microscope and method of observing samples using the microscope, which can reduce optical noise and obtain images with higher sensitivity, thus obtaining precise information about the density, quantity, location, etc. of a fluorophore, and which can simultaneously process separate images even when a plurality of fluorophores having different excitation and fluorescent wavelength ranges is distributed, thus easily obtaining information about the fluorophores. The fluorescence microscope of the present invention includes an objective lens, and first and third medium units. The first medium unit has a refractive index of n1 to accommodate one or more micro-objects including fluorophores and provide a path of excitation light to excite the fluorophores.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: November 20, 2007
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Uk Kang, Garry V. Papayan
  • Patent number: 7280194
    Abstract: Systems and methodology for determining not only precise and repeatable results, but accurate values of the refractive index of solids, fluids and liquids.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: October 9, 2007
    Assignee: J.A. Woollam Co., Inc.
    Inventors: Craig M. Herzinger, Steven E. Green, Gregory K. Pribil
  • Patent number: 7064816
    Abstract: The invention relates to a portable refractometer comprising a depression (7) for samples, located on an insertion tip (11) in such a way that once the insertion tip (11) has penetrated a liquid or a fruit, a sufficient quantity of the sample liquid remains in the depression (7) for samples, thus wetting a measuring surface (4) that is delimited in said depression by a transparent body. The refractive index of the wetting liquid can be determined by measuring the intensity of an optical beam that is reflected by the measuring surface (4).
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: June 20, 2006
    Assignee: Testo AG
    Inventors: Markus Langenbacher, Andreas Derr, Frank Eder
  • Patent number: 7061597
    Abstract: A system for reprocessing and sterilizing a previously used endoscope having at least one lumen is disclosed. The reprocessing system includes a reaction chamber into which individual chemical components of a sterilant are transferred by pneumatic force. The system includes a central processor which controls the asynchronous reprocessing and sterilization of at least two endoscopes. A novel sterilant is also disclosed. Also disclosed is a combination of the sterilization device and the sterilant and methods of using the same.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: June 13, 2006
    Assignee: Minntech Corporation
    Inventors: Raymond Paul Oberleitner, John E. Marxer, Ward J. Sly, Patricia M. Stanley, Gregory Worsnick, Kurt J. Weimer, Bruce D. Martin, Mary Beth B. Henderson, Bradley K. Onstad
  • Patent number: 7030976
    Abstract: A high-pressure resistant compact precision measurement head for highly exact optical refractive index measurements in liquids and/or gases comprising a refractive index reference body, mounted on a high-pressure bulkhead fitting. The body is composed of a single, optically homogenous material produced by pre-calculation of its geometry economically, mechanically and automatically with extremely low tolerances. The measurement head can be formed in such a manner that it has on its front portion an especially small measurement volume to as little as less than 0.5 mm3, through which a very thin optical measurement ray passes. The latter is produced behind a high-pressure bulkhead fitting in a pressure-protected interior cavity of the instrument and also evaluated there as an incoming ray after passing through the measurement medium. The precision measurement head possesses thereby no assembly and adjustment elements of optical components in the high-pressure area of the measurement medium.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: April 18, 2006
    Assignee: Goal International
    Inventors: Abolfath Hosseinioun, legal representative, Karl-Heinz Mahrt, deceased
  • Patent number: 6931340
    Abstract: An apparatus and method for calibrating machine vision measuring systems that have more than one camera are disclosed. A first calibration target is mounted in a fixed relationship to a first camera of the machine vision measuring system. A third camera mounted in a fixed relationship to a second camera of the machine vision measuring system. Second and third calibration targets are mounted in a fixed relationship to one another and viewable by the first camera and by the third camera. A data processor is programmed to compute calibration of the first camera and the second camera, based on a position of the second calibration target relative to the third calibration target and based on a position of the first camera with respect to the third camera. The apparatus and method provide a way to continuously measure the positions of two or more cameras used in the measuring system, and to use such measurements to calibrate the system.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: August 16, 2005
    Assignee: Snap-On Incorporated
    Inventors: David A. Jackson, Michael J. Robb, Donald L. Walchuk
  • Patent number: 6876444
    Abstract: A refractometer with a measuring prism on whose measuring surface a sample to be tested can be mounted, which sample can be illuminated by a light beam emitted by a source of light under a range of angles that includes a critical angle for total reflection, and with a reciever for recieving the reflected light. An optical device that decomposes the reflected light into a color spectrum that is mounted in the path of the reflected light between the measuring surface and the reciever.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: April 5, 2005
    Assignee: Franz Schmidt & Haensch GmbH & Co.
    Inventors: Sükrü Yilmaz, Mathis Kuchejda
  • Patent number: 6858274
    Abstract: Ground joint surfaces of two synthetic corundum pieces 4, 5 are superposed on each other, and ends thereof are held in intimate contact with each other. The synthetic corundum pieces are then heated at a temperature equal to or lower than the melting point of synthetic corundum to joint the synthetic corundum pieces 4, 5.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: February 22, 2005
    Assignee: Rion Co., Ltd.
    Inventor: Hajime Fukazawa
  • Patent number: 6813014
    Abstract: A method for designing and tuning a refractive index of a magnetic fluid is performed by adjusting some characteristic parameters. The characteristic parameters include the type of carrier, the type of magnetic particles, the concentration of the magnetic ingredient; the wavelength of an intended light onto the magnetic fluid layer; the strength of applied magnetic field; the sweep rate of the magnetic field; the direction of the applied magnetic field; the strength of applied magnetic field associated with the thickness of the magnetic fluid layer; and the strength of applied magnetic field associated with the temperature. A magnetic fluid with a designed value of refractive index under zero magnetic field is synthesized by carefully selecting the carrier and the volume concentration of the magnetic particles, and this value can further be tuning around the designed value by changing the forgoing characteristic parameters.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: November 2, 2004
    Inventors: Chin-Yih Rex Hong, Herng-Er Horng, Hong-Chang Yang, Shieh-Yueh Yang, Wan-Sun Tse