Patents by Inventor Fusao Ishii

Fusao Ishii 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).

  • Optics of wearable display devices
    Patent number: 10539798
    Abstract: A see-through image display system with high resolution up to 4K, wide field of view (FOV) beyond 60 degrees and small form factor is proposed. The optics for the display incorporates optical elements including hologram, DOE, lens and mirror with free form surfaces. This display system is suitable for a wearable display.
    Type: Grant
    Filed: July 15, 2017
    Date of Patent: January 21, 2020
    Assignees: DOCOMO Incorporated
    Inventors: Fusao Ishii, Yuji Aburakawa, Kazuhiko Takahashi, Keiichi Murakami, Mikiko Nakanishi
  • AUGMENTED REALITY (AR) DISPLAY
    Publication number: 20200004019
    Abstract: A projection display having an optical waveguide for a see-though display system using Fresnel mirrors is disclosed. A display using this waveguide enables high resolution, free from chroma aberration, wide viewing angle, large eye-box and very compact size.
    Type: Application
    Filed: January 23, 2019
    Publication date: January 2, 2020
    Inventor: Fusao Ishii
  • Manufacturing method of diffractive optical elements
    Patent number: 10520808
    Abstract: Manufacturing methods are disclosed to produce DOE, HOE and Fresnel optical elements. These methods enable low cost manufacturing with high precision. The methods include lithography, roll-to-roll imprint and UV-casting.
    Type: Grant
    Filed: November 11, 2017
    Date of Patent: December 31, 2019
    Assignees: DOCOMO Incorporated
    Inventors: Fusao Ishii, Nakanishi Mikiko, Takahashi Kazuhiko, Abrakawa Yuji, Keiichi Murakami
  • SEAMLESS TILED DISPLAYS
    Publication number: 20190387206
    Abstract: A seamless large screen image display having multiple tiled projection screens is disclosed. The screens can have a decorative pattern as well as black surface. Images can be presented without noticing the decorative patterns.
    Type: Application
    Filed: December 22, 2018
    Publication date: December 19, 2019
    Inventors: Fusao Ishii, Victor Stone
  • See through display enabling the correction of visual deficits
    Patent number: 10416462
    Abstract: A See-Through Display System with the ability to correct visual deficits such as presbyopia, color blindness and poor night vision is disclosed. This invention enables the correction of visual deficits using camera(s), microdisplay (s), controlling circuit(s) with digital grayscale control and see through optics such as free form lens/mirror, half-mirror, diffractive and/or holographic optical element(s).
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: September 17, 2019
    Inventors: Victor Stone, Fusao Ishii
  • Illuminator for a wearable display
    Patent number: 10386563
    Abstract: A compact illuminator for a see-through image display system with highly uniform light distribution is disclosed. This invention enables wearable displays such as eye-glass type see-through display. This system provides a wide divergent beam from a display device so that a viewer can have a large eyebox.
    Type: Grant
    Filed: July 15, 2017
    Date of Patent: August 20, 2019
    Assignees: NTT DOCOMO, Inc.
    Inventors: Fusao Ishii, Yuji Aburakawa, Kazuhiko Takahashi, Keiichi Murakami, Mikiko Nakanishi
  • LIGHT SOURCE FOR PROJECTION DISPLAY
    Publication number: 20190227204
    Abstract: A compact integrator of light beams is disclosed using a diffractive optical element to integrate multiple beams into a single beam regardless of wavelength or polarization.
    Type: Application
    Filed: January 19, 2019
    Publication date: July 25, 2019
    Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuhiko Takahashi, Yuji Aburakawa
  • STRUCTURE AND MANUFACTURING METHOD OF HOLOGRAPHIC OPTICAL ELEMENTS
    Publication number: 20190155216
    Abstract: Manufacturing methods are disclosed to produce a seamless hologram using a free-form-lens enabling arbitrary adjustment of diffraction angle and also a thick hologram made of transparent inorganic materials and heat and UV resistant is disclosed.
    Type: Application
    Filed: January 19, 2019
    Publication date: May 23, 2019
    Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuhiko Takahashi, Yuji Aburakawa
  • MANUFACTURING METHOD OF DIFFRACTIVE OPTICAL ELEMENTS
    Publication number: 20190079395
    Abstract: Manufacturing methods are disclosed to produce DOE, HOE and Fresnel optical elements. These methods enable low cost manufacturing with high precision. The methods include lithography, roll-to-roll imprint and UV-casting.
    Type: Application
    Filed: November 11, 2017
    Publication date: March 14, 2019
    Inventors: Fusao Ishii, Nakanishi Mikiko, Takahashi Kazuhiko, Abrakawa Yuji, Keiichi Murakami
  • High contrast projection screen
    Patent number: 10175479
    Abstract: An image display system includes a reflecting screen that has a reflecting surface. The reflecting surface includes hologram which reflects narrow bands of spectrum of incident lights toward desired direction. A projection display system includes a reflecting mirror(s) with hologram so that the image can be projected nearly vertical or short distance. This invention can be used as a head-up-display with improved brightness and eliminating ghost noise.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: January 8, 2019
    Inventor: Fusao Ishii
  • ILLUMINATOR FOR A WEARABLE DISPLAY
    Publication number: 20180372940
    Abstract: A compact illuminator for a see-through image display system with highly uniform light distribution is disclosed. This invention enables wearable displays such as eye-glass type see-through display. This system provides a wide divergent beam from a display device so that a viewer can have a large eyebox.
    Type: Application
    Filed: July 15, 2017
    Publication date: December 27, 2018
    Inventors: Fusao Ishii, Yuji Aburakawa, Kazuhiko Takahashi, Keiichi Murakami, Mikiko Nakanishi
  • OPTICS OF WEARABLE DISPLAY DEVICES
    Publication number: 20180373038
    Abstract: A see-through image display system with high resolution up to 4K, wide field of view (FOV) beyond 60 degrees and small form factor is proposed. The optics for the display incorporates optical elements including hologram, DOE, lens and mirror with free form surfaces.
    Type: Application
    Filed: July 15, 2017
    Publication date: December 27, 2018
    Inventors: Fusao Ishii, Yuji Aburakawa, Kazuhiko Takahashi, Keiichi Murakami, Mikiko Nakanishi
  • GHOST IMAGE ELIMINATION OF DOE USING FOURIER OPTICS METHOD
    Publication number: 20180275333
    Abstract: A see-through image display system having a DOE often has undesirable light or so called ghost images due to the quantization of saw tooth shape of DOE surface. This invention provides ways to eliminate ghost images.
    Type: Application
    Filed: December 15, 2017
    Publication date: September 27, 2018
    Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuhiko Takahashi, Yuji Abrakawa, Keiichi Murakami
  • WEARABLE DISPLAY
    Publication number: 20180172981
    Abstract: An image display system including tangential outgoing projected light combined with holographic optical element is disclosed. This invention enables very small compact wearable display suitable eyewear display with complete stealth characteristic, electronic vision control and very high solution having large FOV and Eye Box.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 21, 2018
    Inventor: Fusao Ishii
  • SEQUENCE AND TIMING CONTROL OF WRITING AND REWRITING PIXEL MEMORIES WITH SUBSTANTIALLY LOWER DATA RATE
    Publication number: 20180114477
    Abstract: A Display system driven with binary pulse-width-modulation requires very high data transfer rate to achieve high grayscale. This invention discloses the embodiments of hardware structures and configurations which enable to reduce substantially the data transfer rate using non-sequential order of binary bits, wherein the combination of the sequences of binary bits is selected from the combinations which avoid simultaneous writing of multiple rows.
    Type: Application
    Filed: September 25, 2016
    Publication date: April 26, 2018
    Inventor: Fusao Ishii
  • Package implemented with PCB and transparent substrate to contain and protect a MEMS device
    Patent number: 9885865
    Abstract: The present invention provides a flip-chip package for MEMS device without time consuming wire-bonding. Bonding a silicon chip to a printed circuit board can be achieved by restricting the heat deformation of printed circuit board with adhered glass substrate which has similar heat expansion coefficient as silicon.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 6, 2018
    Inventor: Fusao Ishii
  • Optical waveguide using fresnel lenses
    Publication number: 20170322414
    Abstract: An optical waveguide for a see-through display system using Fresnel lenses is disclosed. This invention enables high efficiency of light utilization, wavelength independence, high resolution and very small form factor. This display system is suitable for head-up-display and wearable display.
    Type: Application
    Filed: May 9, 2016
    Publication date: November 9, 2017
    Inventor: Fusao Ishii
  • HIGH CONTRAST PROJECTION SCREEN
    Publication number: 20170153450
    Abstract: An image display system includes a reflecting screen that has a reflecting surface. The reflecting surface includes hologram which reflects narrow bands of spectrum of incident lights toward desired direction. A projection display system includes a reflecting mirror(s) with hologram so that the image can be projected nearly vertical or short distance. This invention can be used as a head-up-display with improved brightness and eliminating ghost noise.
    Type: Application
    Filed: November 27, 2015
    Publication date: June 1, 2017
    Inventor: Fusao Ishii
  • Optics of projecor
    Publication number: 20160357094
    Abstract: A projection display system is disclosed including a laser light source, projection lens or mirror, and screen. This invention enables a decorative screen which hides a display and matches near-by furniture. This invention also discloses a tiny cost-effective laser light source for projection displays.
    Type: Application
    Filed: September 21, 2015
    Publication date: December 8, 2016
    Inventor: Fusao Ishii
  • See Through Display enabling the correction of visual deficits
    Publication number: 20150302773
    Abstract: A See-Through Display System with the ability to correct visual deficits such as presbyopia, color blindness and poor night vision is disclosed. This invention enables the correction of visual deficits using camera(s), microdisplay(s), controlling circuit(s) and see through optics such as free form lens/mirror, half-mirror, diffractive and/or holographic optical element(s).
    Type: Application
    Filed: September 20, 2014
    Publication date: October 22, 2015
    Inventor: Fusao Ishii