Patents by Inventor Minoru Murayama

Minoru Murayama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240006854
    Abstract: A surface-emitting laser device includes a first-conductivity type substrate including a first main surface on one side and a second main surface on an opposite side, a first-conductivity type reflection layer laminated on the first main surface so as to be lower in concentration than the substrate, a first-conductivity type clad layer laminated on the reflection layer so as to be higher in concentration than the reflection layer, an active layer laminated on the clad layer, a second-conductivity type semiconductor layer laminated on the active layer, a first removal portion that is formed by digging down the semiconductor layer and the active layer so as to expose the clad layer and that demarcates a mesa structure having a plateau shape, a second removal portion that is formed by digging down the clad layer and the reflection layer from a bottom portion of the first removal portion so as to expose the substrate from a position distant from the mesa structure, and a bypass wiring that is electrically connect
    Type: Application
    Filed: August 11, 2023
    Publication date: January 4, 2024
    Applicant: ROHM CO., LTD.
    Inventors: Minoru MURAYAMA, Masashi YAMAMOTO, Ryo TODO
  • Publication number: 20220291481
    Abstract: An imaging lens system includes a first group having positive power and a second group having positive power disposed in that order from an object side to an image. The first group includes a first sub-group and a second sub-group. The second group includes a third sub-group, a stop, and a fourth sub-group. Conditional expressions (1), (2), and (3) below are satisfied: 0.07<f2/f1<0.4 ??(1); 0.45<f2/f2a<0.7 ??(2); and 1.05<f/R1aN<1.55 ??(3) where f denotes a focal length of an entirety of the imaging lens system focused at infinity, f1 denotes a focal length of the first group, f2 denotes a focal length of the second group focused at infinity, f2a denotes a focal length of the third sub-group focused at infinity, and R1aN denotes a radius of curvature of a surface closest to the image side within the first sub-group.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 15, 2022
    Applicant: Ricoh Company, Ltd.
    Inventor: Minoru MURAYAMA
  • Patent number: 11437783
    Abstract: A surface-emitting semiconductor laser includes a first-conductivity-type layer, an active layer, and a second-conductivity-type layer. The active layer and the second-conductivity-type layer are electrically connected in a current constriction layer through an opening. The surface-emitting semiconductor laser further includes an insulating layer that has translucency with respect to an emission wavelength of the active layer, a first electrode electrically connected to the first-conductivity-type layer, and a second electrode electrically connected to the second-conductivity-type layer.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: September 6, 2022
    Assignee: ROHM CO., LTD.
    Inventors: Masashi Yamamoto, Yuji Tsuji, Daiju Takamizu, Minoru Murayama
  • Patent number: 11397309
    Abstract: An imaging lens system includes a first group having positive power and a second group having positive power disposed in that order from an object side to an image. The first group includes a first sub-group and a second sub-group. The second group includes a third sub-group, a stop, and a fourth sub-group. Conditional expressions (1), (2), and (3) below are satisfied: 0.07<f2/f1<0.4??(1); 0.45<f2/f2a<0.7??(2); and 1.05<f/R1aN<1.55??(3) where f denotes a focal length of an entirety of the imaging lens system focused at infinity, f1 denotes a focal length of the first group, f2 denotes a focal length of the second group focused at infinity, f2a denotes a focal length of the third sub-group focused at infinity, and R1aN denotes a radius of curvature of a surface closest to the image side within the first sub-group.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: July 26, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventor: Minoru Murayama
  • Publication number: 20220190556
    Abstract: A semiconductor light emitting device includes a substrate, a common conductive portion formed on the substrate, a semiconductor light emitting element mounted on the common conductive portion, and an electronic component mounted on the common conductive portion and electrically connected to the semiconductor light emitting element by the common conductive portion. This structure shortens the conductive path between the semiconductor light emitting element and the electronic component, thereby reducing capacitance caused by the conductive path between the semiconductor light emitting element and the electronic component. Thus, while reducing parasitic capacitance, the semiconductor light emitting element and the electronic component are electrically connected.
    Type: Application
    Filed: April 17, 2020
    Publication date: June 16, 2022
    Inventors: Satohiro KIGOSHI, Yuki TANUMA, Gen MUTO, Minoru MURAYAMA, Okimoto KONDO, Chikoto IKEDA, Yusuke NAKAKOHARA
  • Patent number: 11315130
    Abstract: A vending machine includes a storage to store product management data in which an on-sale product management numbers is associated with product management content; an input and output unit to input and output the product management data; and an update control unit configured to update the product management data. Further, the update control unit collectively receives all the product management data including a part to be updated, stores all the product management data as update target product management data, displays the update target product management data including confirmation target information and stores the update target product management data as updated product management data.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: April 26, 2022
    Assignee: THE COCA-COLA COMPANY
    Inventors: Takashi Tanazawa, Minoru Murayama, Kazuo Tsunoda, Yusuke Nakajima, Yasuo Nakazato, Yasuhiro Yamazaki, Takashi Nishiyama
  • Publication number: 20210075192
    Abstract: A surface-emitting semiconductor laser includes a semiconductor laminated structure that includes a first-conductivity-type layer, an active layer, and a second-conductivity-type layer and in which light generated in the active layer is extracted as laser light from a side of the second-conductivity-type layer while resonating along a lamination direction of these layers, a current constriction layer in which the active layer and the second-conductivity-type layer are electrically connected together through an opening, an insulating layer that has translucency with respect to an emission wavelength of the active layer, a first electrode electrically connected to the first-conductivity-type layer, and a second electrode electrically connected to the second-conductivity-type layer, and, in the surface-emitting semiconductor laser, a part of the insulating layer is exposed from the second electrode, and the insulating layer exposed from the second electrode includes a first portion that has a first thickness and
    Type: Application
    Filed: October 29, 2018
    Publication date: March 11, 2021
    Applicant: ROHM CO., LTD.
    Inventors: Masashi YAMAMOTO, Yuji TSUJI, Daiju TAKAMIZU, Minoru MURAYAMA
  • Publication number: 20200327562
    Abstract: A vending machine includes a storage to store product management data in which an on-sale product management numbers is associated with product management content; an input and output unit to input and output the product management data; and an update control unit configured to update the product management data. Further, the update control unit collectively receives all the product management data including a part to be updated, stores all the product management data as update target product management data, displays the update target product management data including confirmation target information and stores the update target product management data as updated product management data.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Applicant: THE COCA-COLA COMPANY
    Inventors: Takashi TANAZAWA, Minoru MURAYAMA, Kazuo TSUNODA, Yusuke NAKAJIMA, Yasuo NAKAZATO, Yasuhiro YAMAZAKI, Takashi NISHIYAMA
  • Patent number: 10634975
    Abstract: A finder optical system is achieved in which object images can be more easily observed. A finder optical system includes an image-erecting member, which erects an object image formed by an objective optical system, provided on an optical path from the object side toward an eyepiece side, wherein the image-erecting member is formed as a penta roof prism provided with a first reflection surface and a second reflection surface, which define a roof reflection surface that reflects an incident light bundle emanated from the object, and the first reflection surface and the second reflection surface are configured as total-reflection surfaces that totally reflect the light bundle including the object image.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: April 28, 2020
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Minoru Murayama
  • Publication number: 20190250367
    Abstract: An imaging lens system includes a first group having positive power and a second group having positive power disposed in that order from an object side to an image. The first group includes a first sub-group and a second sub-group. The second group includes a third sub-group, a stop, and a fourth sub-group. Conditional expressions (1), (2), and (3) below are satisfied: 0.07<f2/f1<0.4??(1); 0.45<f2/f2a<0.7??(2); and 1.05<f/R1aN<1.55??(3) where f denotes a focal length of an entirety of the imaging lens system focused at infinity, f1 denotes a focal length of the first group, f2 denotes a focal length of the second group focused at infinity, f2a denotes a focal length of the third sub-group focused at infinity, and R1aN denotes a radius of curvature of a surface closest to the image side within the first sub-group.
    Type: Application
    Filed: January 7, 2019
    Publication date: August 15, 2019
    Inventor: Minoru MURAYAMA
  • Publication number: 20190041725
    Abstract: A finder optical system is achieved in which object images can be more easily observed. A finder optical system includes an image-erecting member, which erects an object image formed by an objective optical system, provided on an optical path from the object side toward an eyepiece side, wherein the image-erecting member is formed as a penta roof prism provided with a first reflection surface and a second reflection surface, which define a roof reflection surface that reflects an incident light bundle emanated from the object, and the first reflection surface and the second reflection surface are configured as total-reflection surfaces that totally reflect the light bundle including the object image.
    Type: Application
    Filed: August 12, 2016
    Publication date: February 7, 2019
    Applicant: Richo Imaging Company, Ltd.
    Inventor: Minoru MURAYAMA
  • Patent number: 9715085
    Abstract: An eyepiece optical system is achieved that is suitable for an object image displayed on a miniaturized image display device and can magnify the object image to a high magnification ratio, the distance to the eyepoint is long while achieving a wide apparent visual angle at a short focal length, various aberrations can be favorably corrected while achieving a superior optical quality, and the pupil diameter can be enlarged. The eyepiece optical system includes a first lens element having a meniscus shape with a concave surface on the object side, a positive second lens element, a negative third lens element, and a positive fourth lens element, in that order from the object side toward the eye side.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: July 25, 2017
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Minoru Murayama
  • Patent number: 9645367
    Abstract: A zoom lens system includes a positive first lens group, a negative second lens group, a third lens group including at least one positive lens element or one negative lens element, a positive fourth lens group, and a negative fifth lens group, in that order from the object side. At least the first, second, fourth and fifth lens groups are moved during zooming from the short to long focal length extremities, and the following conditions (1) and (2) are satisfied: ?6.5<f1/f5<?4.6??(1), and ?1.2<fw/f3<0.7??(2), wherein f1, f3 and f5 designate the focal lengths of the first and fifth lens groups, respectively, and fw designates the focal length of the entire zoom lens system at the short focal length extremity.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: May 9, 2017
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Minoru Murayama
  • Publication number: 20170062703
    Abstract: A magneto-electric transducer includes: a substrate; a magnetic sensitive layer formed on the substrate; and a pair of input terminals and a pair of output terminals, which are electrically connected to the magnetic sensitive layer, wherein the magnetic sensitive layer includes a longitudinally extending input side region an output side region extending in a direction crossing the input side region, when viewed from top, wherein the output side region includes a first output side region protruding from one side of the input side region and a second output side region protruding from the other side of the input side region, and wherein the first output side region and the second output side region are configured to be asymmetrical with respect to arrangement of the input side region.
    Type: Application
    Filed: August 17, 2016
    Publication date: March 2, 2017
    Applicant: ROHM CO., LTD.
    Inventors: Satoshi NAKAGAWA, Minoru MURAYAMA
  • Publication number: 20160327774
    Abstract: A zoom lens system includes a positive first lens group, a negative second lens group, a third lens group including at least one positive lens element or one negative lens element, a positive fourth lens group, and a negative fifth lens group, in that order from the object side. At least the first, second, fourth and fifth lens groups are moved during zooming from the short to long focal length extremities, and the following conditions (1) and (2) are satisfied: ?6.5<f1/f5<?4.6??(1), and ?1.2<fw/f3<0.7??(2), wherein f1, f3 and f5 designate the focal lengths of the first and fifth lens groups, respectively, and fw designates the focal length of the entire zoom lens system at the short focal length extremity.
    Type: Application
    Filed: December 5, 2014
    Publication date: November 10, 2016
    Applicant: RICOH IMAGING COMPANY, LTD.
    Inventor: Minoru MURAYAMA
  • Publication number: 20160139361
    Abstract: An eyepiece optical system is achieved that is suitable for an object image displayed on a miniaturized image display device and can magnify the object image to a high magnification ratio, the distance to the eyepoint is long while achieving a wide apparent visual angle at a short focal length, various aberrations can be favorably corrected while achieving a superior optical quality, and the pupil diameter can be enlarged. The eyepiece optical system includes a first lens element having a meniscus shape with a concave surface on the object side, a positive second lens element, a negative third lens element, and a positive fourth lens element, in that order from the object side toward the eye side.
    Type: Application
    Filed: March 28, 2014
    Publication date: May 19, 2016
    Applicant: RICOH IMAGING COMPANY, LTD.
    Inventor: Minoru MURAYAMA
  • Publication number: 20150340840
    Abstract: Provided is a semiconductor laser which has a low operating current and stably oscillates even for high-temperature output. The semiconductor laser is provided with a substrate (10); an n-type clad layer (12) arranged on the substrate (10); an active layer (13) arranged on the n-type clad layer (12); a p-type clad layer (14), which is arranged on the active layer (13) and composed of a compound containing Al and has a stripe-shaped ridge structure to be a current channel; a current block layer (16), which is arranged on the surface of the p-clad layer (14) excluding an upper surface of the ridge structure and composed of a compound containing Al and has an Al composition ratio not more than that of the p-type clad layer (14); and a light absorption layer (17), which is arranged on the current block layer (16) and absorbs light at the laser oscillation wavelength.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Applicant: ROHM CO., LTD.
    Inventors: Tsuguki NOMA, Minoru MURAYAMA, Satoshi UCHIDA, Tsutomu ISHIKAWA
  • Patent number: 8118734
    Abstract: An endoscope illumination optical system includes a surface light source, a positive first lens element, a positive second lens element, in this order from the surface light source. The endoscope illumination optical system satisfies the following conditions: 0.40<f/D<0.53??(1) 0.40<0.5·D·?<0.56??(2) wherein f: the combined focal length of the positive first lens element and the positive second lens element; D: the maximum diameter of the surface light source; R1: the radius of curvature of a first surface, of the positive first lens element, facing toward the surface light source; R2: the radius of curvature of a second surface, of the positive first lens element, facing toward a surface to be illuminated; n1: the refractive index of the positive first lens element; d1: the thickness of the positive first lens element; and ? designates an angle defined as (1+0.85d1/R2)(1?1/n1)/R1?1.05/R2.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: February 21, 2012
    Assignee: Hoya Corporation
    Inventor: Minoru Murayama
  • Patent number: 8094354
    Abstract: A scanning objective lens for scanning on an observation target with light emitted from an exit end face of an optical fiber moving on a curved plane formed to be convex on an objective lens side, including first and second lens groups each having a positive power, wherein the first lens group and the second lens group are arranged in this order from the optical fiber's exit end face side, and the scanning objective lens satisfies conditions: 0.60<f1/f2<1.25??(1); and 0.95<|R1a/R1b|<2.50??(2) when f1 denotes a focal length of the first lens group, f2 denotes a focal length of the second lens group, R1a denotes a curvature radius in the first lens group nearest to the exit end face of the optical fiber, and R1b denotes a curvature radius of a lens surface in the first lens group nearest to the observation target.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: January 10, 2012
    Assignee: Hoya Corporation
    Inventor: Minoru Murayama
  • Publication number: 20110019255
    Abstract: A scanning objective lens for scanning on an observation target with light emitted from an exit end face of an optical fiber moving on a curved plane formed to be convex on an objective lens side, including first and second lens groups each having a positive power, wherein the first lens group and the second lens group are arranged in this order from the optical fiber's exit end face side, and the scanning objective lens satisfies conditions: 0.60<f1/f2<1.25??(1); and 0.95<|R1a/R1b|<2.50??(2) when f1 denotes a focal length of the first lens group, f2 denotes a focal length of the second lens group, R1a denotes a curvature radius in the first lens group nearest to the exit end face of the optical fiber, and R1b denotes a curvature radius of a lens surface in the first lens group nearest to the observation target.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 27, 2011
    Applicant: HOYA CORPORATION
    Inventor: Minoru MURAYAMA