Patents Assigned to Hamamatsu Photonics, K. K.
  • Publication number: 20200249488
    Abstract: Provided is an optical element including: a main body which is formed of a medium capable of transmitting first light and second light having a wavelength longer than that of the first light, in which the main body includes an incident region into which the first light and the second light are incident, in which a gap which is inclined with respect to the incident region and in which a medium having a refractive index with respect to the first light and the second light lower than that of the main body is disposed is provided inside the main body, and in which a gap width from an interface bordering the main body and the gap is larger than a penetration length of an evanescent wave of the first light at the interface and is smaller than a penetration length of an evanescent wave of the second light at the interface.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 6, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi NAKANISHI, Hironori TAKAHASHI
  • Publication number: 20200249463
    Abstract: A mirror device includes a support portion, a movable portion, and a pair of torsion bars disposed on both sides of the movable portion on a first axis. The movable portion includes a frame-shaped frame connected to the pair of torsion bars and a mirror unit disposed inside the frame. The mirror unit is connected to the frame in each of a pair of connection regions located on both sides of the mirror unit in a direction parallel to a second axis. A region other than the pair of connection regions in a region between the mirror unit and the frame is a space. An outer edge of the mirror unit and an inner edge of the frame are connected to each other so that a curvature in each of the pair of connection regions is continuous when viewed from a direction perpendicular to the first and the second axes.
    Type: Application
    Filed: August 3, 2018
    Publication date: August 6, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki SUZUKI, Takuma OSAKI
  • Publication number: 20200249084
    Abstract: A light detector includes a light detecting element and a reference element. The reference element includes a second substrate and a second membrane disposed on a second surface so as to form a void space between the second membrane and the second surface of the second substrate. The second membrane includes a pair of second wiring layers facing each other with a second gap extending along a second line interposed therebetween and a second resistance layer electrically connected to each of the pair of second wiring layers and having an electrical resistance depending on a temperature. An outer shape of the second membrane when viewed from a direction perpendicular to the second surface is a polygonal shape. The second line extends between diagonals facing each other with a geometric center position of the second membrane interposed therebetween when viewed from a direction perpendicular to the second surface.
    Type: Application
    Filed: July 24, 2018
    Publication date: August 6, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Masahiro YAMAZAKI, Katsumi SHIBAYAMA, Ryusuke KITAURA
  • Publication number: 20200249470
    Abstract: In a mirror unit, a first wall portion is higher than a second wall portion. A window member is disposed on a top surface of the first wall portion and a top surface of the second wall portion and is inclined with respect to a mirror surface. When any one of first to fourth wall portions is set as a first reference wall portion, in a cross-section perpendicular to the first reference wall portion, a first line passing through a first end at a side of the first reference wall portion in the mirror surface and a first corner portion formed at the side of the first reference wall portion by an outer surface and a first side surface in the window member intersects the first wall portion. A wiring portion includes a portion extending inside a base and leads outside a frame member.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 6, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Daiki SUZUKI, Tomoyuki IDE, Yuki MORINAGA
  • Publication number: 20200249094
    Abstract: A light detector includes a substrate, a membrane disposed on a surface of the substrate, a first and a second electrode post supporting the membrane. The first electrode post includes a first main body portion having a tubular shape spreading from a first electrode pad toward a side opposite to the substrate, and a first flange portion provided in an end portion at the side opposite to the substrate in the first main body portion. The first flange portion is provided with a first sloped surface inclined so as to approach the substrate as it goes away from the first main body portion. A first wiring layer reaches an inner surface of the first main body portion through the first sloped surface. The second electrode post and the second wiring layer are formed similarly to the first electrode post and the first wiring layer.
    Type: Application
    Filed: July 24, 2018
    Publication date: August 6, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Masahiro YAMAZAKI, Katsumi SHIBAYAMA, Ryusuke KITAURA, Ryosuke KOIKE, Go TANAKA
  • Patent number: 10734786
    Abstract: The present embodiment relates to a semiconductor light emitting element having a structure that enables removal of zero-order light from output light of an S-iPM laser. The semiconductor light emitting element includes an active layer, a pair of cladding layers, and a phase modulation layer. The phase modulation layer has a base layer and a plurality of modified refractive index regions each of which is individually arranged at a specific position. One of the pair of cladding layers includes a distributed Bragg reflector layer which has a transmission characteristic with respect to a specific optical image outputted along an inclined direction with respect to a light emission surface and has a reflection characteristic with respect to the zero-order light outputted along a normal direction of the light emission surface.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: August 4, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Kazuyoshi Hirose, Yoshitaka Kurosaka, Takahiro Sugiyama, Yuu Takiguchi, Yoshiro Nomoto
  • Publication number: 20200241275
    Abstract: An optical device for microscopic observation 4 comprises: a cold stop 13 having openings 13d, 13e corresponding to a low-magnification microscope optical system 5 and being a stop member arranged in a vacuum vessel 12 to let the light from the sample S pass to the camera 3; a warm stop 10 having an opening 14 corresponding to a high-magnification microscope optical system 5 and being a stop member arranged outside the vacuum vessel 12 to let the light from the sample S pass toward the cold stop 13; and a support member 11 supporting the warm stop 10 so that the warm stop can be inserted to or removed from on the optical axis of the light from the sample S, wherein the warm stop 10 has a reflective surface 15 on the camera 3 side and wherein the opening 14 is smaller than the openings 13d, 13e.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tomonori Nakamura, Ikuo Arata, Yoshihiro Ito
  • Publication number: 20200241054
    Abstract: An image generating device is an apparatus for acquiring an image which shows a direction of an electric current flowing through a semiconductor device. The image generating device comprises a signal application unit configured to apply a stimulation signal to the semiconductor device, a magnetic detection unit configured to output a detection signal based on a magnetism generated by an application of the stimulation signal, and an image generation unit configured to generate phase image data comprising a phase component which indicates a phase difference based on the phase difference between the detection signal and a reference signal which is generated based on the stimulation signal and generate an electric current direction image which shows the direction of the electric current based on the phase image data.
    Type: Application
    Filed: April 7, 2020
    Publication date: July 30, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Akihiro OTAKA, Tomonori NAKAMURA
  • Publication number: 20200241289
    Abstract: An optical unit includes: a base which includes a main surface; a mirror device which includes a movable mirror portion and is disposed on the base; a frame member that is provided on the main surface so as to surround the mirror device; and a window member that is bonded to the frame member and has a flat plate shape. The frame member includes a first wall portion which is provided on the main surface and includes a first top surface on the side opposite to the main surface, a second wall portion which is provided on the main surface so as to face the first wall portion and includes a second top surface on the side opposite to the main surface.
    Type: Application
    Filed: January 27, 2020
    Publication date: July 30, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Yuki MORINAGA, Anna YOSHIDA, Yoshihisa WARASHINA
  • Patent number: 10722112
    Abstract: A tablet terminal 1A is a measurement apparatus for measuring a subject's eyelid position, and includes a display section 3 that generates a vertically long light emitting region to make a reflection image form on a corneal surface of the subject's eyeball, a camera 5 that images the reflection image formed by the display section 3, and an arithmetic circuit 7 that derives reflection image information concerning a size or position of the reflection image based on image data of the reflection image obtained by the camera 5, and measures the eyelid position based on the reflection image information.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: July 28, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Kazutaka Suzuki, Yoshinori Matsui, Haruyoshi Toyoda, Munenori Takumi, Naotoshi Hakamata
  • Patent number: 10724902
    Abstract: A Fabry-Perot interference filter includes a substrate that has a first surface, a first laminate that has a first mirror portion disposed on the first surface, a second laminate that has a second mirror portion facing the first mirror portion via a gap on a side opposite to the substrate with respect to the first mirror portion, and an intermediate layer that defines the gap between the first laminate and the second laminate. An outer surface of the intermediate layer is curved such that an edge portion of the intermediate layer on the substrate side is positioned on an outer side of an edge portion of the intermediate layer on the side opposite to the substrate in a direction parallel to the first surface. The second laminate covers the outer surface of the intermediate layer.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: July 28, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi Kasahara, Katsumi Shibayama, Masaki Hirose, Toshimitsu Kawai, Hiroki Oyama, Yumi Kuramoto
  • Patent number: 10727035
    Abstract: The present embodiment relates to an electron multiplier having a structure configured to suppress and stabilize a variation of a resistance value in a wider temperature range. In the electron multiplier, a resistance layer sandwiched between a substrate and a secondary electron emitting layer comprised of an insulating material is configured using a single metal layer in which a plurality of metal particles comprised of a metal material whose resistance value has a positive temperature characteristic are two-dimensionally arranged on a layer formation surface, which is coincident with or substantially parallel to a channel formation surface of the substrate, in the state of being adjacent to each other with a part of the first insulating material interposed therebetween.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: July 28, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Daichi Masuko, Yasumasa Hamana, Hajime Nishimura, Hiroyuki Watanabe
  • Patent number: 10724953
    Abstract: The present invention relates to a method for evaluating phagocytic capacity of phagocytes, including incorporating a fluorescent substance into phagocytes in a sample containing whole blood to obtain a measurement sample, standing the measurement sample for 2 minutes or more, measuring the fluorescence of the fluorescent substance, and evaluating the phagocytic capacity of phagocytes based on the intensity of the measured fluorescence, in which the measuring the fluorescence of the fluorescent substance includes irradiating an intermediate region of gravity direction of a placed measurement sample with an excitation light, and detecting the fluorescence generated from the fluorescent substance by the excitation light.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: July 28, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Ran Zhang, Hiroyuki Inagawa, Gen-Ichiro Soma, Kimiko Kazumura, Hiroshi Tsuchiya, Naokazu Morishita
  • Publication number: 20200233102
    Abstract: A scintillator panel includes a substrate, a resin protective layer formed on the substrate and made of an organic material, a barrier layer formed on the resin protective layer and including thallium iodide as a main component, and a scintillator layer formed on the barrier layer and including cesium iodide with thallium added thereto as a main component. According to this scintillator panel, moisture resistance can be improved due to the barrier layer provided therein.
    Type: Application
    Filed: July 3, 2018
    Publication date: July 23, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Keisuke GOTO, Kazuhiro SHIRAKAWA, Hidenori JONISHI, Masashi HATANAKA, Haruki YAMAJI, Jun SAKURAI, Yutaka KUSUYAMA
  • Publication number: 20200232852
    Abstract: A light detection device includes: a Fabry-Perot interference filter provided with a light transmission region; a light detector configured to detect light transmitted through the light transmission region; a package having an opening and accommodating the Fabry-Perot interference filter and the light detector, and a light transmitting unit arranged on an inner surface of the package so as to close an opening, the light transmitting unit including a band pass filter configured to transmit light incident on the light transmission region. When viewed from a direction parallel to the line, an outer edge of the Fabry-Pert interference filter is positioned outside an outer edge of the opening, and an outer edge of the light transmitting unit is positioned outside the outer edge of the Fabry-Perot interference filter.
    Type: Application
    Filed: April 8, 2020
    Publication date: July 23, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Masaki HIROSE, Katsumi SHIBAYAMA, Takashi KASAHARA, Toshimitsu KAWAI, Hiroki OYAMA, Yumi TERAMACHI
  • Publication number: 20200233082
    Abstract: An optical system for measuring a distance to an object furnished with a plane mirror is disclosed. The optical distance measuring system includes a coherent light source projecting a laser beam, optical elements, and a one-dimensional photosensor. The optical elements split the laser beam into two laser beams and spread out the laser beam into a sheet of light whose orientation is perpendicular to a plane created by the propagation directions of the laser beams. The laser beams are reflected by the mirror and back to the photosensor. The photosensor detects incident light intensity distribution of the reflected laser beams with two local maxima, whose position can be employed to calculate the distance of the mirror and its momentary tilt angle.
    Type: Application
    Filed: September 18, 2015
    Publication date: July 23, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Peter SEITZ, Alexandru RUSU
  • Publication number: 20200234935
    Abstract: A transmissive photocathode includes a light transmitting substrate that has a first surface on which light is incident and a second surface which emits light incident from a side of the first surface, a photoelectric conversion layer that is provided on the second surface side of the light transmitting substrate and converts the light emitted from the second surface into photoelectrons, a light transmitting conductive layer that is provided between the light transmitting substrate and the photoelectric conversion layer and is composed of a single-layered graphene, and a thermal stress alleviation layer that is provided between the photoelectric conversion layer and the light transmitting conductive layer and has light transmissivity. A thermal expansion coefficient of the thermal stress alleviation layer is smaller than a thermal expansion coefficient of the photoelectric conversion layer and larger than a thermal expansion coefficient of the graphene.
    Type: Application
    Filed: May 14, 2018
    Publication date: July 23, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takaaki NAGATA, Yoshihiro ISHIGAMI, Yasumasa HAMANA
  • Patent number: D891635
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: July 28, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Takayuki Ohmura, Masahiro Kotani
  • Patent number: D892189
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: August 4, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Daiki Suzuki
  • Patent number: D892190
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: August 4, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Daiki Suzuki