Patents by Inventor Masao Imai

Masao Imai 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: 20190255739
    Abstract: A rubbery polymer extrusion dryer includes: a cylinder; a liner provided on an inner peripheral surface of the cylinder; a screw rotatably arranged in the liner; wherein the rubbery polymer extrusion dryer conveys a rubbery polymer by the screw rotating in the liner, wherein a plurality of grooves extending in a conveying direction of the rubbery polymer are formed on an inner surface of the liner, and wherein widths of the grooves are 0.1 mm or more and 2 mm or less.
    Type: Application
    Filed: October 23, 2017
    Publication date: August 22, 2019
    Applicant: ZEON CORPORATION
    Inventors: Masao NAKAMURA, Kenichiro SUMIURA, Junichi IMAI
  • Patent number: 9819919
    Abstract: An illumination device comprises a light source that includes a solid-state light source whose peak wavelength is set in the red wavelength band, a light source that includes a solid-state light source whose peak wavelength is set in the green wavelength band, a light source that includes a solid-state light source whose peak wavelength is set in the blue wavelength band, and a color synthesis optical element that combines P-polarized colored light incident from one light source and S-polarized colored light incident from the other two light sources. One light source includes at least one solid-state light source whose peak wavelength is set in the wavelength band of the color corresponding to one of the other light sources.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: November 14, 2017
    Assignee: NEC CORPORATION
    Inventors: Masao Imai, Goroh Saitoh, Fujio Okumura
  • Publication number: 20160301904
    Abstract: An illumination device comprises a light source that includes a solid-state light source whose peak wavelength is set in the red wavelength band, a light source that includes a solid-state light source whose peak wavelength is set in the green wavelength band, a light source that includes a solid-state light source whose peak wavelength is set in the blue wavelength band, and a color synthesis optical element that combines P-polarized colored light incident from one light source and S-polarized colored light incident from the other two light sources. One light source includes at least one solid-state light source whose peak wavelength is set in the wavelength band of the color corresponding to one of the other light sources.
    Type: Application
    Filed: June 22, 2016
    Publication date: October 13, 2016
    Applicant: NEC CORPORATION
    Inventors: Masao IMAI, Goroh SAITOH, Fujio OKUMURA
  • Patent number: 9436016
    Abstract: A liquid crystal shutter eyeglass that can solve the problem in which the provision of excellent images cannot be kept if the situation of the viewer varies is provided. A liquid crystal shutter (2) has a light transmitting and shading region in which a state can change between a light transmitting state in which light is caused to transmit and a light shading state in which light is caused to be shaded. A driving section (51) changes the state between the light transmitting state and the light shading state of a driving region that is at least part of the light transmitting and shading region. A controlling means (52) adjusts at least one of a size and a position of the driving region of which the driving section (51) changes the state.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: September 6, 2016
    Assignee: NEC CORPORATION
    Inventors: Goroh Saitoh, Masao Imai
  • Patent number: 9429761
    Abstract: A first dichroic mirror (2a) and a second dichroic mirror (2b) are formed on the bonding surfaces between four right angle prisms (1a-1d) so as to intersect. The first dichroic mirror (2a) transmits, of visible light of P-polarization, at least the light of a specific wavelength band and reflects, of visible light of S-polarization, at least the light of the specific wavelength band. The second dichroic mirror (2b) transmits, of visible light of P-polarization, at least light of the specific wavelength band and transmits, of visible light of S-polarization, at least light of the specific wavelength band. The cutoff wavelengths with respect to S-polarized light of both dichroic mirrors (2a and 2b) are set within ranges of bands other than those of the three primary colors of light.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: August 30, 2016
    Assignee: NEC CORPORATION
    Inventors: Masao Imai, Goroh Saitoh, Fujio Okumura
  • Patent number: 9400419
    Abstract: An illumination device comprises a light source (3a) that includes a solid-state light source whose peak wavelength is set in the red wavelength band, a light source (3b) that includes a solid-state light source whose peak wavelength is set in the green wavelength band, a light source (3c) that includes a solid-state light source whose peak wavelength is set in the blue wavelength band, and a color synthesis optical element (1) that combines P-polarized colored light incident from one light source (3b) and S-polarized colored light incident from the other two light sources (3a and 3c). One light source (3c) includes at least one solid-state light source whose peak wavelength is set in the wavelength band of the color corresponding to one of the other light sources (3b).
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: July 26, 2016
    Assignee: NEC CORPORATION
    Inventors: Masao Imai, Goroh Saitoh, Fujio Okumura
  • Patent number: 9304384
    Abstract: A first light source that emits first light of a first wavelength band; an optical path separator that separates the first light into fourth light and fifth light having different optical paths from each other; and a first optical path combiner that combines the fourth light and the fifth light are included, where the fourth light includes light of a fourth wavelength band being a predetermined band in the first wavelength band and light having a polarization component in a first direction being a predetermined polarization direction in a fifth wavelength band being a band other than the fourth wavelength band in the first wavelength band, and the fifth light is light having a polarization component in a second direction orthogonal to the first direction in the fifth wavelength band.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: April 5, 2016
    Assignee: NEC CORPORATION
    Inventors: Mizuho Tomiyama, Naofumi Suzuki, Masao Imai
  • Patent number: 9285599
    Abstract: Disclosed is three-dimensional video viewing system (1) including: display system (2) that displays three or more videos of different parallaxes in a time-division multiplexing manner, and outputs a control signal that indicates a switching timing of the videos; input means (7) for designating an arbitrary display mode among a plurality of display modes in which a plurality of three-dimensional videos different from one another in three-dimensionality are defined by a combination of two of the three or more videos; two shutters that switch a state between light transmission and light blocking; and a shutter drive circuit that specifies the switching timing of the two videos corresponding to the display mode designated by input means (7) based on the control signal, and independently controls opening/closing of the shutters at the specified switching timing of the videos.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: March 15, 2016
    Assignee: NEC CORPORATION
    Inventors: Masao Imai, Junichirou Ishii, Goroh Saitoh, Fujio Okumura
  • Publication number: 20150359093
    Abstract: It is an object of the present invention to provide an epoxy resin composition containing an epoxy compound, a low-molecular-weight phenol-modified polyphenylene ether and a cyanate compound as essential components, the epoxy resin composition having excellent dielectric characteristics and exhibiting high heat resistance while maintaining flame retardancy. To achieve this, the epoxy resin composition of the present invention is a thermosetting resin composition composed of a resin varnish containing (A) an epoxy compound having a number-average molecular weight of 1000 or less and containing at least two epoxy groups in the molecule without containing any halogen atoms, (B) a polyphenylene ether having a number-average molecular weight of 5000 or less, (C) a cyanate ester compound, (D) a curing catalyst and (E) a halogen flame retardant, all of the components (A) to (C) are dissolved in the resin varnish, while component (E) is dispersed without being dissolved in the resin varnish.
    Type: Application
    Filed: August 20, 2015
    Publication date: December 10, 2015
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroaki FUJIWARA, Masao IMAI, Yuki KITAI
  • Patent number: 9210415
    Abstract: A three-dimensional picture viewing system includes: display system (2) that multiplexes and displays, in a time-division manner, three or more pictures including two or more pictures with different parallaxes and at least one subtitle picture and outputs a control signal indicating a switching timing of the pictures; input means (7) for designating an arbitrary display mode among a plurality of different display modes in which display pictures to be viewed are determined from among the three or more pictures; two shutters that switch a state between light transmission and light blocking; and a shutter driving circuit that specifies switching timings of the display pictures corresponding to the display mode designated by input means (7) based on the control signal, and independently controls opening/closing of the two shutters at the specified switching timing of the pictures.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: December 8, 2015
    Assignee: NEC CORPORATION
    Inventors: Masao Imai, Junichirou Ishii, Goroh Saitoh, Fujio Okumura
  • Patent number: 9195125
    Abstract: A first light source that emits first light of a first wavelength band; an optical path separator that separates the first light into third light and second light whose polarization directions are orthogonal to each other; an optical path separator and combiner that separates the second light into fourth light and fifth light having different wavelength bands from each other; a reflector that reflects the fifth light to a direction of the optical path separator and combiner; and an optical path combiner that combines the third light and the second light are included.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: November 24, 2015
    Assignee: NEC CORPORATION
    Inventors: Mizuho Tomiyama, Naofumi Suzuki, Masao Imai
  • Patent number: 9179122
    Abstract: The image transmission system of the present invention is provided with: a time-division display apparatus sequentially displaying first to N-th (N: an integer of 2 or more) images with a frequency above M×N [Hz] (M: an integer of 1 or more) by time division; a multiplexing unit plane-sequentially multiplexing the first to N-th images in accordance with the order of displaying the first to N-th images on the time-division display apparatus; a transmitting unit sending out the multiplexed images which have been multiplexed by the multiplexing unit to a predetermined image transmission path with a frame frequency of M [Hz]; and a receiving unit receiving the multiplexed images from the transmitting unit via the predetermined image transmission path and sequentially transmitting image data of the multiplexed images to the time-division display apparatus.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: November 3, 2015
    Assignee: NEC CORPORATION
    Inventors: Junichirou Ishii, Masao Imai
  • Patent number: 9170351
    Abstract: An optical element that can reduce the etendue of emitted light emitted from the optical element without having depend on the etendue of light-emitting elements is provided with a plasmon-excitation layer that is interposed between two layers having dielectric properties wherein, taking the plasmon-excitation layer as a border, the effective dielectric constant of the emission-side portion that is the emission layer side is higher than the effective dielectric constant of the incident-side portion that is the side of a carrier-generating layer, and the dielectric constant between the plasmon-excitation layer and the carrier-generating layer is higher than the dielectric constant between the carrier-generating layer and the light-incident surface.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: October 27, 2015
    Assignee: NEC Corporation
    Inventors: Masanao Natsumeda, Masao Imai, Naofumi Suzuki, Mizuho Tomiyama, Shin Tominaga, Yuji Ohno
  • Publication number: 20150301282
    Abstract: Provided is an optical element that highly efficiently radiates light with high directivity at low etendue. The optical element includes a light emission layer (103) generating an exciton to emit light, a plasmon excitation layer (105) having a higher plasma frequency than a light emission frequency of the light emission layer (103), an output layer (107) converting light or a surface plasmon generated on an upper surface of the plasmon excitation layer (105) into light with a predetermined output angle to output the light, and a dielectric layer (102).
    Type: Application
    Filed: April 22, 2013
    Publication date: October 22, 2015
    Inventors: Masanao NATSUMEDA, Masao IMAI, Shin TOMINAGA, Naofumi SUZUKI, Mizuho TOMIYAMA, Yuji OHNO
  • Publication number: 20150261078
    Abstract: A first light source that emits first light of a first wavelength band; an optical path separator that separates the first light into fourth light and fifth light having different optical paths from each other; and a first optical path combiner that combines the fourth light and the fifth light are included, where the fourth light includes light of a fourth wavelength band being a predetermined band in the first wavelength band and light having a polarization component in a first direction being a predetermined polarization direction in a fifth wavelength band being a band other than the fourth wavelength band in the first wavelength band, and the fifth light is light having a polarization component in a second direction orthogonal to the first direction in the fifth wavelength band.
    Type: Application
    Filed: July 30, 2013
    Publication date: September 17, 2015
    Inventors: Mizuho Tomiyama, Naofumi Suzuki, Masao Imai
  • Patent number: 9116270
    Abstract: Disclosed is an optical element that includes: carrier generation layer (16) in which carriers are generated by light from light guide body (12) into which light from a light-emitting element enters; plasmon excitation layer (17) that has a plasma frequency higher than the frequency of light generated when carrier generation layer (16) is excited by light from the light-emitting element; and wave vector conversion layer (18) that converts surface plasmon generated by plasmon excitation layer (17) light having a predetermined exit angle to output the light. Plasmon excitation layer (17) is sandwiched between two layers having dielectric properties.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: August 25, 2015
    Assignee: NEC CORPORATION
    Inventors: Masanao Natsumeda, Masao Imai, Goroh Saitoh, Shin Tominaga
  • Patent number: 9110357
    Abstract: The present invention includes light valve section (10) having substrate (22) through which light that exits plurality of optical connection mechanisms (23) that switch between the transmitting state and the shading state of light emitted from light emitting element (25) transmits and plasmon coupling section (11) that is arranged in light valve section (10) and that causes plasmon coupling to occur with light that exits light emitting element (25). Plasmon coupling section (11) includes carrier generation layer (15) that generates carriers with light that exits light emitting element (25) and plasmon excitation layer (17) that has a higher plasma frequency than the frequency of light that is generated in carrier generation layer (15) excited with the light emitted from light emitting element (25). Wave number vector conversion layer (19) is arranged on substrate (22).
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: August 18, 2015
    Assignee: NEC CORPORATION
    Inventors: Masanao Natsumeda, Masao Imai, Shin Tominaga
  • Patent number: 9086619
    Abstract: An optical device featuring high efficiency and luminance is provided. The optical device includes carrier generation layer that causes fluorescence to occur with incident light, plasmon excitation layer that excites first surface plasmons with said fluorescence, carrier generation layer being laminated on carrier generation layer, and exit layer that extracts the first surface plasmons or light that occurs on an opposite surface of carrier generation layer contact surface of plasmon excitation layer to the outside. Carrier generation layer contains metal particles that excite second surface plasmons with said incident light.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: July 21, 2015
    Assignee: NEC CORPORATION
    Inventors: Masanao Natsumeda, Shin Tominaga, Masao Imai
  • Publication number: 20150160542
    Abstract: A first light source that emits first light of a first wavelength band; an optical path separator that separates the first light into third light and second light whose polarization directions are orthogonal to each other; an optical path separator and combiner that separates the second light into fourth light and fifth light having different wavelength bands from each other; a reflector that reflects the fifth light to a direction of the optical path separator and combiner; and an optical path combiner that combines the third light and the second light are included.
    Type: Application
    Filed: July 30, 2013
    Publication date: June 11, 2015
    Inventors: Mizuho Tomiyama, Naofumi Suzuki, Masao Imai
  • Patent number: 9039201
    Abstract: The present invention includes light valve section (10) having a plurality of shutter mechanisms (14) that switch between a transmitting state and a shading state of light emitted from light emitting element (25); and substrate (16) through which light that exits plurality of shutter mechanisms (14) is transmitted. The display element also has plasmon coupling section (11) that causes plasmon coupling to occur with light that exits the light valve section (10). Plasmon coupling section (11) includes carrier generation layer (17) that generates carriers with incident light that exits light valve section (10), plasmon excitation layer (19) that has a higher plasma frequency than the frequency of light that is generated in carrier generation layer (17) excited with the light emitted from light emitting element (25), and wave number vector conversion layer (22) that converts the light or surface plasmons generated in plasmon excitation layer (19) into light having a predetermined exit angle.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: May 26, 2015
    Assignee: NEC CORPORATION
    Inventors: Masanao Natsumeda, Masao Imai, Goroh Saitoh, Shin Tominaga