Patents by Inventor Hiroko Koiwa

Hiroko Koiwa 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).

  • Patent number: 10400970
    Abstract: A vehicle front lamp that emits light forward includes a first light emitter that emits first emission light having a correlated color temperature of at least 3000 K and at most 7000 K, and a second light emitter that emits second emission light having a correlated color temperature of at least 3000 K and at most 7000 K. The chroma value of the first emission light is lower than the chroma value of the second emission light. The chroma value of each of the first emission light and the second emission light is derived by using the calculation method stipulated in The CIE 1997 Interim Color Appearance Model (Simple Version). The second emission light is emitted far ahead and the first emission light is emitted onto a road surface ahead, when the vehicle front lamp is mounted on a vehicle.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: September 3, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroko Koiwa, Naoko Takei, Yoko Matsubayashi
  • Patent number: 10364964
    Abstract: A lighting apparatus is provided. The lighting apparatus includes a first light source module and a second light source module surrounding the first light source module. A half beam angle of the first light source module is smaller than a half beam angle of the second light source module. A correlated color temperature of light from the first light source module is higher than a correlated color temperature of light from the second light source module.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 30, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoko Matsubayashi, Hiroko Koiwa
  • Patent number: 10222007
    Abstract: A lighting apparatus is provided. The lighting apparatus includes a first light distributor which illuminates a predetermined region, and a second light distributor which illuminates a periphery of the predetermined region. The first light distributor includes a first light emitting element having a spectral emission characteristic defined by a correlated color temperature of light being at least 5400 K and at most 7000 K, Duv being in a range of ?6 to 5 inclusive, a chroma value calculated using a calculation method specified by the CIE 1997 Interim Color Appearance Model (Simple Version) being 2.7 or less, and a general color rendering index Ra being 80 or more. The second light distributor includes a second light emitting element having a spectral emission characteristic defined by a correlated color temperature of light being lower than the correlated color temperature of the light emitted by the first light emitting element.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: March 5, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoko Matsubayashi, Tohru Himeno, Hiroko Koiwa
  • Publication number: 20180087731
    Abstract: A vehicle front lamp that emits light forward includes a first light emitter that emits first emission light having a correlated color temperature of at least 3000 K and at most 7000 K, and a second light emitter that emits second emission light having a correlated color temperature of at least 3000 K and at most 7000 K. The chroma value of the first emission light is lower than the chroma value of the second emission light. The chroma value of each of the first emission light and the second emission light is derived by using the calculation method stipulated in The CIE 1997 Interim Color Appearance Model (Simple Version). The second emission light is emitted far ahead and the first emission light is emitted onto a road surface ahead, when the vehicle front lamp is mounted on a vehicle.
    Type: Application
    Filed: September 21, 2017
    Publication date: March 29, 2018
    Inventors: Hiroko KOIWA, Naoko TAKEI, Yoko MATSUBAYASHI
  • Publication number: 20170254487
    Abstract: A lighting apparatus is provided. The lighting apparatus includes a first light distributor which illuminates a predetermined region, and a second light distributor which illuminates a periphery of the predetermined region. The first light distributor includes a first light emitting element having a spectral emission characteristic defined by a correlated color temperature of light being at least 5400 K and at most 7000 K, Duv being in a range of ?6 to 5 inclusive, a chroma value calculated using a calculation method specified by the CIE 1997 Interim Color Appearance Model (Simple Version) being 2.7 or less, and a general color rendering index Ra being 80 or more. The second light distributor includes a second light emitting element having a spectral emission characteristic defined by a correlated color temperature of light being lower than the correlated color temperature of the light emitted by the first light emitting element.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 7, 2017
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoko MATSUBAYASHI, Tohru HIMENO, Hiroko KOIWA
  • Publication number: 20170254511
    Abstract: A lighting apparatus is provided. The lighting apparatus includes a first light source module and a second light source module surrounding the first light source module. A half beam angle of the first light source module is smaller than a half beam angle of the second light source module. A correlated color temperature of light from the first light source module is higher than a correlated color temperature of light from the second light source module.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 7, 2017
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoko MATSUBAYASHI, Hiroko KOIWA
  • Publication number: 20170257922
    Abstract: A lighting apparatus includes first light emitting elements and second light emitting elements having chromaticity values in a same chromaticity range. A ratio of a greatest value of a spectral distribution of combined light in a range of 500 nm to 560 nm inclusive to a smallest value of the spectral distribution of the combined light in a range of 500 nm to 650 nm inclusive is 0.85 or less. The combined light is a combination of light emitted by the first light emitting elements and light emitted by the second light emitting elements.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 7, 2017
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoko MATSUBAYASHI, Tohru HIMENO, Hiroko KOIWA, Naoko TAKEI, Makoto YAMADA
  • Publication number: 20120140181
    Abstract: An ophthalmic apparatus includes: a screen; a examination controller; a first image projection unit projecting a target image; a second image projection unit projecting a pointer image; a mirror reflecting the projections of the first and second image projection units to project the same onto the screen; and a pointer operation input unit through which the pointer position is inputted. The examination controller includes: a first image generation unit generating a target image; an image correction unit correcting the target image so that the target image does not look distorted on the screen; a calculation storage unit calculating the position of the pointer according to the input through the pointer operation input unit and storing the calculated position; a second image generation unit generating the image of the pointer; and an output unit presenting or outputting the target image and the position of the pointer.
    Type: Application
    Filed: June 7, 2010
    Publication date: June 7, 2012
    Applicant: PANASONIC ELECTRIC WORKS CO., LTD.
    Inventors: Hiroko Koiwa, Ryo Kawamura
  • Publication number: 20110205491
    Abstract: A configuration is adopted, which includes: a shallow-bottom hemispherical screen and a deep-bottom hemispherical screen, which are different in depth from each other. The deep-bottom hemispherical screen belongs to an entirety of a hemispherical screen composed of the shallow-bottom hemispherical screen and a peripheral edge portion of the hemispherical screen. In accordance with a type of an implemented ophthalmic test, a multifunctional ophthalmic test device drives the deep-bottom hemispherical screen or the shallow-bottom hemispherical screen so that either of the deep-bottom hemispherical screen and the shallow-bottom hemispherical screen can be located at a position onto which an ophthalmic test image is projected by a projector. In this state, the projector projects the ophthalmic test image onto either of the deep-bottom hemispherical screen and the shallow-bottom hemispherical screen.
    Type: Application
    Filed: October 14, 2009
    Publication date: August 25, 2011
    Applicant: PANASONIC ELECTRIC WORKS CO., LTD.
    Inventors: Hiroko Koiwa, Ryo Kawamura