Patents by Inventor Mitsuyoshi Ichihashi

Mitsuyoshi Ichihashi 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: 20190243045
    Abstract: An object of the present invention is to provide a transmission decorative film capable of applying different visual effects on observation surfaces and a method of manufacturing the same. Provided is a transmission decorative film of the present invention including: a circular polarization plate; and a circular polarization reflection layer disposed on the circular polarization plate, in which the circular polarization reflection layer includes at least one or more first cholesteric liquid crystalline layers that reflect any one of left circularly polarized light or right circularly polarized light, the first cholesteric liquid crystalline layer includes two or more reflection regions having different selective reflection wavelengths, and the circular polarization plate transmits circularly polarized light having a revolution direction opposite to a revolution direction of the circularly polarized light reflected by the first cholesteric liquid crystalline layer.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 8, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi INADA, Mitsuyoshi ICHIHASHI, Shigeaki NIMURA, Rie TAKASAGO
  • Publication number: 20190226659
    Abstract: The present invention provides a viewing system capable of providing varying visual effects with a simpler configuration. In addition, the present invention also provides a display device, a stage installation, and a polymerizable liquid crystal composition.
    Type: Application
    Filed: April 1, 2019
    Publication date: July 25, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Rie TAKASAGO, Hiroshi INADA, Masaru YOSHIKAWA, Mitsuyoshi ICHIHASHI
  • Publication number: 20190204614
    Abstract: An optical laminate includes a cholesteric liquid crystal layer and a lenticular lens which is laminated on the cholesteric liquid crystal layer, the cholesteric liquid crystal layer has a plurality of regions which are arranged in a pattern in an arrangement direction of lenses of the lenticular lens and are different from each other in terms of the reflection center wavelength for front incident light, and among the plurality of regions, a region having the shortest reflection center wavelength is disposed at a focus position of the lenticular lens for the front incident light, and among the plurality of regions, a region having a longer reflection center wavelength is disposed further away from the focus position.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Inventors: Yukito SAITOH, Kunihiro ATSUMI, Naoyoshi YAMADA, Daisuke KASHIWAGI, Shigeaki NIMURA, Mitsuyoshi ICHIHASHI, Rie TAKASAGO
  • Patent number: 10338288
    Abstract: Due to the present invention, a reflection member including two or more layers of fixed cholesteric liquid crystal phases, in which the two or more layers of fixed cholesteric liquid crystal phases exhibit central wavelengths of mutually different selective reflection, and the two or more layers of fixed cholesteric liquid crystal phases include a layer formed of a composition including a disc-like liquid crystal compound and a layer formed of a composition including a rod-like liquid crystal compound and a projected image display member and a heat shield member which include the reflection member are provided. The reflection member of the present invention has favorable selective reflection characteristics with respect to oblique incidence rays.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 2, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Mitsuyoshi Ichihashi
  • Publication number: 20190178470
    Abstract: Provided are a plant-growth laminated film and a plant-growth illumination apparatus that more efficiently provide circularly polarized light used for plant growth. Included are a reflective-type linearly polarizing plate that transmits one of linearly polarized light components of incident light and that reflects the other linearly polarized light component, and a ?/4 plate that converts, into circularly polarized light, linearly polarized light provided by transmission through the reflective-type linearly polarizing plate, wherein the ?/4 plate has an in-plane retardation of 165±40 nm at a wavelength of 660 nm.
    Type: Application
    Filed: February 11, 2019
    Publication date: June 13, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihisa USAMI, Mitsuyoshi ICHIHASHI, Kazuhiro OKI
  • Publication number: 20190174682
    Abstract: An object is to provide a plant illumination apparatus that can output light having a high degree of circular polarization in the target wavelength range. This object is achieved by having a reflective-type polarizing plate having an effective wavelength range, a light-emitting device, and a reflective plate configured to reflect light emitted from the light-emitting device and satisfying: ?1>?2,?2>?3, and w>30 nm wherein ?1 is the center wavelength of the effective wavelength range of the reflective-type polarizing plate, ?2 is the center wavelength of the light-emitting device, w is the full width at half maximum of the transmittance of the reflective-type polarizing plate, and ?3 is the shorter wavelength of the wavelengths at the full width at half maximum.
    Type: Application
    Filed: February 6, 2019
    Publication date: June 13, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihisa USAMI, Mitsuyoshi ICHIHASHI, Kazuhiro OKI
  • Publication number: 20190170922
    Abstract: The present invention provides an optical film exhibiting high alignment and good phase difference development in an oblique direction, and a polarizing plate and an image display device using the same. This optical film of the present invention has a substrate; and a phase difference layer which is provided on the substrate to be adjacent to the substrate, in which the phase difference layer is a layer formed by fixing vertical alignment of a liquid crystal compound having a polymerizable group included in a liquid crystal composition containing the liquid crystal compound and a polymer compound, a difference in ?a value between the polymer compound and the substrate, which is calculated using three-dimensional SP values, is 3 or less, and a content of the polymer compound is less than 10 parts by mass with respect to 100 parts by mass of the liquid crystal compound.
    Type: Application
    Filed: February 4, 2019
    Publication date: June 6, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Shunya KATOH, Koji IIJIMA, Mitsuyoshi ICHIHASHI, Masaru YOSHIKAWA
  • Publication number: 20190172988
    Abstract: The present invention provides a blue light blocking film including a selective reflection layer, in which the selective reflection layer exhibits selective reflection having a center wavelength in a wavelength range of 450 nm to 500 nm, a half-width of the selective reflection is 20 nm to 45 nm, a light transmittance of the selective reflection layer at the center wavelength is 50% or less, and a light transmittance of the selective reflection layer at any wavelength in a wavelength range of more than 500 nm and 780 nm or less is 60% or more. The blue light blocking film of the present invention has high light transmittance in a visible light range, while effectively blocking blue light, and has a reduced yellowish tint. The blue light blocking film of the present invention is used for light sources and the like, and is capable of effectively blocking blue light.
    Type: Application
    Filed: January 24, 2019
    Publication date: June 6, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Shigeaki NIMURA, Shunya KATOH, Yuki NAKAZAWA, Kazuhiro OKI, Mitsuyoshi ICHIHASHI, Yoshihisa USAMI
  • Patent number: 10308185
    Abstract: A vehicle mirror with an image display function including, in this order: an image display device; a circular polarization reflection layer; and a front surface plate made of glass or plastic, in which the circular polarization reflection layer includes a linear polarization reflection plate and a ¼ wavelength plate from the image display device side. The vehicle mirror with an image display function of the invention is capable of displaying a bright image.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 4, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Akihiro Anzai, Kazuhiro Oki, Mitsuyoshi Ichihashi, Takao Taguchi
  • Publication number: 20190086786
    Abstract: Provided are a projection member in which a change in tint depending on a projection position is suppressed, a projection system, and a method of manufacturing the projection member. A projection member according to an embodiment of the present invention includes a reflecting layer that is obtained by immobilizing a cholesteric liquid crystalline phase, in which a helical pitch of the cholesteric liquid crystalline phase gradually changes in a plane direction of the reflecting layer.
    Type: Application
    Filed: November 15, 2018
    Publication date: March 21, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Shunya Katoh, Mitsuyoshi Ichihashi, Shigeaki Nimura
  • Patent number: 10175399
    Abstract: According to the invention, there is provided a mirror with an image display function including, in this order: an image display device; a ¼ wavelength plate; a circular polarization reflection layer; and a front surface plate made of glass or plastic, in which the circular polarization reflection layer includes a cholesteric liquid crystal layer, and the cholesteric liquid crystal layer has a central wavelength of selective reflection in a visible light region. The mirror with an image display function of the invention is capable of displaying a bright image.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 8, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Akihiro Anzai, Kazuhiro Oki, Mitsuyoshi Ichihashi, Takao Taguchi
  • Patent number: 10139533
    Abstract: According to the invention, there is provided a circular polarizing filter for selectively transmitting circularly polarized light of any one sense of either right-handed circularly polarized light or left-handed circularly polarized light at a specific wavelength in which scattering transmittance/vertical transmittance when circularly polarized light of the sense of the specific wavelength enters from any one surface is less than scattering reflectance/regular reflectance when circularly polarized light of the other sense enters from the surface.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: November 27, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Mitsuyoshi Ichihashi, Wataru Majima, Kazuhiro Oki
  • Publication number: 20180335551
    Abstract: The half mirror includes a retardation layer, a circularly polarized light reflecting layer, and a front panel that are disposed in this order. The retardation layer has a front phase difference as measured at a wavelength of 500 nm of 107 to 127 nm and a front phase difference as measured at a wavelength of 475 nm of 110 to 130 nm. The circularly polarized light reflecting layer includes three cholesteric liquid crystal layers. The three cholesteric liquid crystal layers have different selective reflection center wavelengths ?1, ?2, and X,3. The center wavelengths ?1, ?2, and ?3 satisfy 380 nm<?1<500 nm and 520 nm<?2<?3<780 nm. The cholesteric liquid crystal layer having the center wavelength ?1 is disposed nearest to the front panel side.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 22, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Takao TAGUCHI, Kazuhiro OKI, Mitsuyoshi ICHIHASHI
  • Patent number: 10126474
    Abstract: According to the invention, there is provided a mirror with an image display function including, in this order: an image display device; a circular polarization reflection layer; and a front surface plate made of glass or plastic, in which the circular polarization reflection layer includes a cholesteric liquid crystal layer, the cholesteric liquid crystal layer has a central wavelength of selective reflection in a visible light region, and the central wavelength is different from an emission peak wavelength of the image display device by 5 nm or greater. The mirror with an image display function of the invention is capable of displaying a bright image.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: November 13, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Akihiro Anzai, Kazuhiro Oki, Mitsuyoshi Ichihashi, Takao Taguchi
  • Publication number: 20180272950
    Abstract: A vehicle mirror having an image display function includes an image display device, a circularly polarized light reflection layer, and a front plate formed of glass or plastic in this order. The circularly polarized light reflection layer includes a linearly polarized light reflection plate and a 1/4 wavelength plate from a side of the image display device. The linearly polarized light reflection plate and the 1/4 wavelength plate are directly in contact with each other, or only an alignment layer is included between the linearly polarized light reflection plate and the 1/4 wavelength plate. A method for producing the vehicle mirror includes forming the 1/4 wavelength plate from a composition that is directly applied to the surface of the linearly polarized light reflection plate or that is directly applied to the surface of the alignment layer directly in contact with the linearly polarized light reflection plate.
    Type: Application
    Filed: May 23, 2018
    Publication date: September 27, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Akihiro ANZAI, Kazuhiro OKI, Mitsuyoshi ICHIHASHI, Takao TAGUCHI
  • Patent number: 10061187
    Abstract: The present invention provides a reflection member including a selective reflection layer; and two ¼ wavelength phase difference plates, in which the selective reflection layer is disposed between the two ¼ wavelength phase difference plates, the selective reflection layer includes a layer of a fixed cholesteric liquid crystal phase having a central wavelength of selective reflection at a visible light range wavelength ?i, and the selective reflection layer includes a layer in which a twisted direction of a helix of a cholesteric liquid crystal is only one of right or left as the layer of a fixed cholesteric liquid crystal phase having selective reflection at the wavelength ?i. The reflection member of the present invention can be used particularly as a heat shielding member, which can reduce damage to the optical systems due to external light including visible light while efficiently extracting projected light.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: August 28, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Mitsuyoshi Ichihashi, Yuki Saiki, Kazuhiro Oki, Takao Taguchi
  • Publication number: 20180215316
    Abstract: A vehicle mirror with an image display function includes a half mirror and an image display device, the half mirror includes an n?/4 retardation film and a reflection layer, n is 1, 3, 5, or 7, the n?/4 retardation film, the reflection layer, and the image display device are disposed in this order in the mirror with an image display function, and the reflection layer is a linear polarization reflection layer or a circular polarization reflection layer.
    Type: Application
    Filed: March 26, 2018
    Publication date: August 2, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Takao TAGUCHI, Kazuhiro OKI, Mitsuyoshi ICHIHASHI
  • Patent number: 10036701
    Abstract: The invention provides a method of sensing a target object due to a change in light intensity detected when the target object passes to cross a light path of circularly polarized light, in a state where circularly polarized light selectively including any one sense of right circularly polarized light and left circularly polarized light is sensed, and a system including: an emission unit which emits circularly polarized light; a target object movement unit; and a detection unit which senses circularly polarized light, in this order, in which the detection unit is at a position where light emitted from the emission unit is incident, a light path of light where the light emitted from the emission unit is incident to the detection unit intersects with the target object movement unit, and the sense of circularly polarized light selectively emitted by the emission unit and the sense of circularly polarized light selectively sensed by the detection unit are the same as each other.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: July 31, 2018
    Assignee: FUJIFILM Corporation
    Inventor: Mitsuyoshi Ichihashi
  • Publication number: 20180210124
    Abstract: The vehicle mirror includes a high-Re retardation film and a reflective layer. The high-Re retardation film has a front retardation of 5,000 nm or more, and the reflective layer is a reflective layer that is reflective in an unpolarized manner, such as a reflective metal layer. The vehicle mirror may be a vehicle mirror further including an image display device, wherein the high-Re retardation film, the reflective layer, and the image display device are disposed in this order, and the reflective layer is transflective.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 26, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Takao TAGUCHI, Kazuhiro OKI, Mitsuyoshi ICHIHASHI
  • Patent number: 10007042
    Abstract: There is provided a composition containing a discotic liquid crystal compound, a chiral agent, and a surfactant which can form a light reflecting layer formed by fixing a cholesteric liquid crystalline phase, which exhibits excellent durability under a hot and humid environment and excellent heat resistance, and has few alignment defects; a light reflecting film; a luminance-improving film; a backlight unit; and a liquid crystal display device.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: June 26, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Ishikawa, Shinichi Morishima, Mitsuyoshi Ichihashi, Katsufumi Ohmuro, Akio Tamura, Wataru Hoshino