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).

  • Patent number: 11061270
    Abstract: To provide a decorative film capable of applying a visual effect of making a pattern not visually recognizable, in a case where it is seen from the front, and making it visually recognizable, in a case where it is obliquely seen. a circular polarization plate including a linear polarization plate, and a laminate of a uniaxial retardation layer or a biaxial retardation layer; and a circularly polarized light reflection layer which reflects circularly polarized light having a revolution direction opposite to that of light transmitted through the circular polarization plate in a vertical direction from the linear polarization plate side are included.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: July 13, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Shigeaki Nimura, Hiroshi Inada, Mitsuyoshi Ichihashi
  • Publication number: 20210116615
    Abstract: Provided are a cholesteric liquid crystal layer having an excellent reflection anisotropy, a low haze, and a high circular polarization degree of reflected light, and a method for producing the same. In addition, provided are a laminate, an optically anisotropic body, and a reflective film, each of which including the cholesteric liquid crystal layer.
    Type: Application
    Filed: September 22, 2020
    Publication date: April 22, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Keisuke KODAMA, Mitsuyoshi ICHIHASHI, Shunya KATOH, Takeshi NAKAMORI
  • Patent number: 10908338
    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: Grant
    Filed: February 4, 2019
    Date of Patent: February 2, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Shunya Katoh, Koji Iijima, Mitsuyoshi Ichihashi, Masaru Yoshikawa
  • Publication number: 20200409202
    Abstract: A first object of the present invention is to provide a method for producing a cholesteric liquid crystal layer, which can produce a cholesteric liquid crystal layer whose reflection surface is not parallel to the substrate surface by a simple method. A second object of the present invention is to provide a cholesteric liquid crystal layer, and an optically anisotropic body and a reflective layer, each of which includes the cholesteric liquid crystal layer. A third object of the present invention is to provide a liquid crystal composition capable of forming the cholesteric liquid crystal layer. A fourth object of the present invention is to provide a cured product, an optically anisotropic body, and a reflective layer, each of which is formed of the liquid crystal composition.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Keisuke KODAMA, Shunya KATOH, Mitsuyoshi ICHIHASHI
  • Patent number: 10859745
    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: Grant
    Filed: March 23, 2018
    Date of Patent: December 8, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi
  • Patent number: 10800333
    Abstract: According to the invention, there are provided a vehicle minor with an image display function including: an image display device; and a half mirror, in which the half minor includes a reflection layer, and the reflection layer is inclined with respect to a surface of an image display portion of the image display device, and a method of manufacturing a vehicle mirror with an image display function including: positioning a half minor including a reflection layer on a surface of an image display portion of an image display device such that the half mirror is inclined with respect to the surface of the image display portion. In a vehicle minor with an image display function according to the invention, image visibility is hardly reduced by outside light.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: October 13, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Akihiro Anzai, Kazuhiro Oki, Mitsuyoshi Ichihashi, Takao Taguchi
  • Patent number: 10794568
    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: Grant
    Filed: February 11, 2019
    Date of Patent: October 6, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Yoshihisa Usami, Mitsuyoshi Ichihashi, Kazuhiro Oki
  • Patent number: 10746906
    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 ?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: Grant
    Filed: July 13, 2018
    Date of Patent: August 18, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi
  • Patent number: 10714665
    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: Grant
    Filed: January 24, 2019
    Date of Patent: July 14, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Shigeaki Nimura, Shunya Katoh, Yuki Nakazawa, Kazuhiro Oki, Mitsuyoshi Ichihashi, Yoshihisa Usami
  • Patent number: 10690827
    Abstract: A transmission decorative film includes a circular polarization plate and a circular polarization reflection layer disposed on the circular polarization plate. 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. 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: Grant
    Filed: April 22, 2019
    Date of Patent: June 23, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Inada, Mitsuyoshi Ichihashi, Shigeaki Nimura, Rie Takasago
  • Patent number: 10649325
    Abstract: The present invention provides a member for displaying a projected image and a projected image display system in which a clear image can be displayed with high reflectivity and high transmittance without a double image, the member for displaying a projected image including a reflection layer, and a ?/2 phase difference layer, in which the reflection layer includes a cholesteric liquid crystal layer having selective reflection in a visible light range, and the projected image display system including the member for displaying a projected image, in which the ?/2 phase difference layer is disposed on an incidence ray side with respect to the reflection layer, and the incidence ray is p-polarized light which vibrates in a direction parallel to an incidence surface.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: May 12, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Mitsuyoshi Ichihashi, Akihiro Anzai, Shunya Katoh
  • Patent number: 10598588
    Abstract: A sensing method includes sensing the target object by sensing light that is derived from emitted light and has passed the target object, in which the emitted light is circularly polarized light, sensed light is circularly polarized light, and light derived from the emitted light is incident to the target object at an angle greater than 20° and equal to or smaller than 70° that is formed with a normal line of the target object.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: March 24, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Majima, Kazuhiro Oki, Mitsuyoshi Ichihashi
  • Patent number: 10569713
    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: Grant
    Filed: March 26, 2018
    Date of Patent: February 25, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi
  • Publication number: 20200033522
    Abstract: An object of the present invention is to provide a laminate, from which a decorative sheet having metallic gloss and depth of color or the like is obtained, and a decorative sheet and a molded article which use the laminate. The object is achieved by a laminate including a colored transmission layer, a reflection layer has wavelength selectivity in reflection, and an absorption layer in this order, in which the absorption layer absorbs light transmitted through the colored transmission layer, and the reflection layer has a region reflecting the light transmitted through the colored transmission layer.
    Type: Application
    Filed: October 3, 2019
    Publication date: January 30, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Rie TAKASAGO, Hiroshi INADA, Mitsuyoshi ICHIHASHI
  • Patent number: 10534238
    Abstract: An object of the present invention is to provide a transmission decorative film having transparency and capable of applying different visual effects on observation surfaces. The transmission decorative film includes: a linear polarization plate; a first ?/4 plate laminated on one main surface of the linear polarization plate; a first cholesteric liquid crystalline layer laminated on the first ?/4 plate; a second ?/4 plate laminated on the other main surface of the linear polarization plate; and a second cholesteric liquid crystalline layer laminated on the second ?/4 plate, in which the first cholesteric liquid crystalline layer and the second cholesteric liquid crystalline layer respectively have wavelength selective reflectivity and reflect light which is right circularly polarized light or left circularly polarized light at a selective reflection wavelength.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: January 14, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Inada, Shigeaki Nimura, Mitsuyoshi Ichihashi, Rie Takasago
  • Patent number: 10501017
    Abstract: A vehicle mirror with an image display function includes a half mirror which includes a high-Re retardation film and a reflection layer and an image display device on the half mirror, in which the high-Re retardation film, the reflection layer, and the image display device are disposed in this order, the high-Re retardation film has a front phase difference of 5000 nm or greater, and the reflection layer is a linear polarization reflection layer or a circular polarization reflection layer.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: December 10, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi, Akihiro Anzai
  • Publication number: 20190361160
    Abstract: To provide a decorative film capable of applying a visual effect of making a pattern not visually recognizable, in a case where it is seen from the front, and making it visually recognizable, in a case where it is obliquely seen. a circular polarization plate including a linear polarization plate, and a laminate of a uniaxial retardation layer or a biaxial retardation layer; and a circularly polarized light reflection layer which reflects circularly polarized light having a revolution direction opposite to that of light transmitted through the circular polarization plate in a vertical direction from the linear polarization plate side are included.
    Type: Application
    Filed: August 6, 2019
    Publication date: November 28, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Shigeaki NIMURA, Hiroshi INADA, Mitsuyoshi ICHIHASHI
  • Patent number: 10442358
    Abstract: A vehicle mirror with an image display function includes a half mirror which includes a high-Re retardation film and a reflection layer and an image display device on the half mirror, in which the high-Re retardation film, the reflection layer, and the image display device are disposed in this order, the high-Re retardation film has a front phase difference of 5000 nm or greater, and the reflection layer is a linear polarization reflection layer or a circular polarization reflection layer.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 15, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Takao Taguchi, Kazuhiro Oki, Mitsuyoshi Ichihashi, Akihiro Anzai
  • Publication number: 20190243043
    Abstract: An object of the present invention is to provide a transmission decorative film having transparency and capable of applying different visual effects on observation surfaces. The transmission decorative film includes: a linear polarization plate; a first ?/4 plate laminated on one main surface of the linear polarization plate; a first cholesteric liquid crystalline layer laminated on the first ?/4 plate; a second ?/4 plate laminated on the other main surface of the linear polarization plate; and a second cholesteric liquid crystalline layer laminated on the second ?/4 plate, in which the first cholesteric liquid crystalline layer and the second cholesteric liquid crystalline layer respectively have wavelength selective reflectivity and reflect light which is right circularly polarized light or left circularly polarized light at a selective reflection wavelength.
    Type: Application
    Filed: April 19, 2019
    Publication date: August 8, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi INADA, Shigeaki NIMURA, Mitsuyoshi ICHIHASHI, Rie TAKASAGO
  • Publication number: 20190243044
    Abstract: An object of the present invention is to provide a transmission decorative laminate including a cholesteric liquid crystalline layer and capable of applying different visual effects on observation surfaces, and a method of manufacturing the same. Another object of the present invention is to provide a glass base material with a transmission decorative laminate. Provided is a transmission decorative laminate including: a colored transparent base material; and a cholesteric liquid crystalline layer disposed on the base material, in which the cholesteric liquid crystalline layer includes two or more reflection regions having different selective reflection wavelengths, and the base material absorbs light at wavelengths which are the same as selective reflection wavelengths of two or more reflection regions.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 8, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Rie TAKASAGO, Hiroshi INADA, Masaru YOSHIKAWA, Mitsuyoshi ICHIHASHI