Patents by Inventor Nobutoshi Sekiguchi

Nobutoshi Sekiguchi 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: 9217826
    Abstract: At least one flexible light diffusing waveguide is arranged to define a plurality of light diffusing waveguide segments arranged substantially parallel to one another, and is coupled to at least one light source to provide a flexible light panel suitable for general lighting purposes or for use as a backlight in a display, such as a video display. Multiple waveguides can be coupled to different color light sources to provide a multi-colored flexible backlight that is usable in combination with a flexible matrix-addressable panel to provide a flexible video display.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: December 22, 2015
    Assignee: Corning Incorporated
    Inventors: Stephan Lvovich Logunov, Nobutoshi Sekiguchi, Luis Alberto Zenteno
  • Publication number: 20130272014
    Abstract: At least one flexible light diffusing waveguide is arranged to define a plurality of light diffusing waveguide segments arranged substantially parallel to one another, and is coupled to at least one light source to provide a flexible light panel suitable for general lighting purposes or for use as a backlight in a display, such as a video display. Multiple waveguides can be coupled to different color light sources to provide a multi-colored flexible backlight that is usable in combination with a flexible matrix-addressable panel to provide a flexible video display.
    Type: Application
    Filed: October 8, 2012
    Publication date: October 17, 2013
    Inventors: Stephan Lvovich Logunov, Nobutoshi Sekiguchi, Luis Alberto Zenteno
  • Patent number: 7920610
    Abstract: Methods of operating a frequency-converted laser source are disclosed. According to particular disclosed embodiments, a laser diode is driven in a pulsed mode to define pixel intensity values corresponding to desired gray scale values of image pixels in an image plane of the laser source. The pixel intensity values are a function of a laser control signal comprising a discontinuous pulse component, a relatively constant intensity component I, and a continuously variable intensity component I*. The pulse width w of the discontinuous pulse component is selected from a set of discrete available pulse widths according to a desired pixel gray scale value. A low-end pulse width w of the set of available pulse widths is established for a range of low-end pixel gray scale values and progressively larger pulse widths w are established for ranges of progressively higher pixel gray scale values.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: April 5, 2011
    Assignee: Corning Incorporated
    Inventors: David August Sniezek Loeber, Nobutoshi Sekiguchi, Daniel Ohen Ricketts
  • Publication number: 20110051762
    Abstract: Methods of operating a frequency-converted laser source are disclosed. According to particular disclosed embodiments, a laser diode is driven in a pulsed mode to define pixel intensity values corresponding to desired gray scale values of image pixels in an image plane of the laser source. The pixel intensity values are a function of a laser control signal comprising a discontinuous pulse component, a relatively constant intensity component I, and a continuously variable intensity component I*. The pulse width w of the discontinuous pulse component is selected from a set of discrete available pulse widths according to a desired pixel gray scale value. A low-end pulse width w of the set of available pulse widths is established for a range of low-end pixel gray scale values and progressively larger pulse widths w are established for ranges of progressively higher pixel gray scale values.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 3, 2011
    Inventors: David August Sniezek Loeber, Nobutoshi Sekiguchi, Daniel Ohen Ricketts
  • Patent number: 7852313
    Abstract: A display device comprises a light source consisting of three emission elements, each of which emits light of different wavelength regions corresponding to the respective colors of red, green and blue, and a display module consisting of a display part wherein each pixel has two types of color filters that transmit red and green light and green and blue light, respectively. One frame of video signals is split during display to become two subframes and it is possible to alternately emit for each subframe green light, which is transmitted through both color filters, and red and blue light, each of which is transmitted through only one filter.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: December 14, 2010
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventor: Nobutoshi Sekiguchi
  • Publication number: 20070086098
    Abstract: A color wheel device can set a desired display mode without using a complex mechanical apparatus. For example, a color wheel device 1 includes a first color wheel 10 having transmitting regions of W, R, G, B in a circumferential direction and rotated on an axis, a second color wheel 20 having transmitting regions of W, R, G, B in a circumferential direction and rotated at the same axis of the first color wheel, and selecting means for selecting a relative location between the first and second color wheels 10, 20. While the first and second color wheels are rotated, the light is entered into the first color wheel 10 and is outputted from the second color wheel 20.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 19, 2007
    Inventors: Nobutoshi Sekiguchi, Satoshi Omi, Akio Ishii
  • Publication number: 20060232545
    Abstract: A display device comprises a light source consisting of three emission elements, each of which emits light of different wavelength regions corresponding to the respective colors of red, green and blue, and a display module consisting of a display part wherein each pixel has two types of color filters that transmit red and green light and green and blue light, respectively. One frame of video signals is split during display to become two subframes and it is possible to alternately emit for each subframe green light, which is transmitted through both color filters, and red and blue light, each of which is transmitted through only one filter.
    Type: Application
    Filed: April 18, 2006
    Publication date: October 19, 2006
    Inventor: Nobutoshi Sekiguchi
  • Patent number: 5798864
    Abstract: A projecting type image display apparatus includes a calculation processing unit for calculating a Fraunhofer diffraction image of an original image, an image display unit for producing/displaying the calculated Fraunhofer diffraction image, and an image converting unit for projecting the produced/displayed Fraunhofer diffraction image to the original image and projecting the original image on the screen. The calculation processing unit has a function of calculating the Fraunhofer diffraction image of the projection image and outputting the same to the image display unit. The image display unit is provided with an image display element on which the Fraunhofer diffraction image is optically displayed. The image projecting unit is provided with first and second lenses for converting the Fraunhofer diffraction image to the original image and projecting the original image on the screen.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: August 25, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Nobutoshi Sekiguchi
  • Patent number: 5729011
    Abstract: A spectroscopic apparatus capable of simultaneously producing spectroscopic images corresponding to a plurality of wavelengths and a spectroscopic image recording apparatus capable of recording the produced spectroscopic images, wherein an image producing unit produces a plurality of same images from a single input image by dividing a pupil of an optical system, a first spectroscopic unit produces a plurality of first spectroscopic images corresponding to the plurality of same images by extracting a predetermined wavelength component corresponding to each of the plurality of same images, and a second spectroscopic unit produces a plurality of second spectroscopic images corresponding to respective ones of the first spectroscopic images by extracting a predetermined wavelength component corresponding to each of the first spectroscopic images corresponding to the plurality of same images.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: March 17, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Nobutoshi Sekiguchi
  • Patent number: 5579161
    Abstract: An image display apparatus comprises an image display unit capable of producing and displaying not an image itself but a Fourier-transform image of the image, and a light transmission unit for focusing the Fourier-transform image produced and displayed on the image display unit on a pupil face of an observer's eye and producing an original image on the retina of the eye. The light transmission unit includes a lens and an eye lens such that an image-side focal position of the lens coincides with an object-side focal position of the eye lens. A mask is situated at the object-side focal position of the eye lens to determine the range and shape of a visual field. The image display unit is situated at an image-side focal position of the lens, and the pupil face of the observer's eye is alinged at an image-side focal position of the eye lens.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: November 26, 1996
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Nobutoshi Sekiguchi
  • Patent number: 5574473
    Abstract: An image display apparatus comprises an image display unit capable of generating and displaying a plurality of coherent point light source pairs, a light transmission unit for focusing the point light source pairs on the pupil plane of an observer's eye so that an image is formed on the retina of the eye by the effect of optical interference, a visual axis detector for monitoring the movements of the eye and detecting the visual axis direction thereof, and an image display correcting unit for restricting a distortion of the image, caused by the eye movements, within its tolerance in accordance with data detected by the visual axis detector. The image display correcting unit includes an optical member set in an optical path between the image display unit and a lens, and an optical member drive unit for tilting the optical member for a given angle in a predetermined direction.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: November 12, 1996
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Nobutoshi Sekiguchi
  • Patent number: 5389849
    Abstract: A detecting portion outputs a contact state signal in accordance with a contact state with respect to an object to be manipulated. The contact state signal represents at least one of information of a sense of sliding of the detection portion with respect to the object and surface information such as surface roughness of the object. A signal processing section converts the contact state signal from the detecting portion into tactility information corresponding to at least one of the information of the sense of sliding and the surface information. A tactility providing portion is excited in accordance with the tactility information from the signal processing section to generate at least one of a traveling wave corresponding to the information of the sense of sliding and a standing wave corresponding to the surface information. A transmission portion transmits at least one of the traveling wave and the standing wave generated by the tactility providing portion to a finger of an operator.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: February 14, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Takeo Asano, Hisashi Nishimura, Nobutoshi Sekiguchi, Hideo Adachi