Nec Corporation

Nec Lcd Technologies, Ltd.

Goroh Saitoh

Masao Imai

Fujio Okumura

Masanao Natsumeda

Shin Tominaga

Junichirou Ishii

Ken Sumiyoshi

Shin-ichi Uehara

Ken-Ichi Takatori

Koji Mimura

Yoshie Yagi

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.

Illumination device and projection display device using same

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 () 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 () 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 () adjusts at least one of a size and a position of the driving region of which the driving section () changes the state.

Liquid crystal shutter eyeglass

A first dichroic mirror () and a second dichroic mirror () are formed on the bonding surfaces between four right angle prisms (-) so as to intersect. The first dichroic mirror () 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 () 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 (and) are set within ranges of bands other than those of the three primary colors of light.

Color synthesis optical element, projection-type display device using same, and method for controlling display thereof

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 (and). 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 ().

Disclosed is three-dimensional video viewing system () including: display system () 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 () 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 () based on the control signal, and independently controls opening/closing of the shutters at the specified switching timing of the videos.

Three-dimensional video viewing system, display system, optical shutter, and three-dimensional video viewing method

A three-dimensional picture viewing system includes: display system () 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 () 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 () based on the control signal, and independently controls opening/closing of the two shutters at the specified switching timing of the pictures.

Three-dimensional picture viewing system, display system, optical shutter, and three-dimensional picture viewing method

Disclosed is an optical element that includes: carrier generation layer () in which carriers are generated by light from light guide body () into which light from a light-emitting element enters; plasmon excitation layer () that has a plasma frequency higher than the frequency of light generated when carrier generation layer () is excited by light from the light-emitting element; and wave vector conversion layer () that converts surface plasmon generated by plasmon excitation layer () light having a predetermined exit angle to output the light. Plasmon excitation layer () is sandwiched between two layers having dielectric properties. The effective dielectric constant of the incident side portion of plasmon excitation layer () including an entire structure stacked above light guide body () side is higher than that of the exit side portion of plasmon excitation layer () including the entire structure stacked above wave vector conversion layer () side and the medium in contact with wave vector conversion layer ().

Optical element, light source device, and projection display device

The present invention includes light valve section () having a plurality of shutter mechanisms () that switch between a transmitting state and a shading state of light emitted from light emitting element (); and substrate () through which light that exits plurality of shutter mechanisms () is transmitted. The display element also has plasmon coupling section () that causes plasmon coupling to occur with light that exits the light valve section (). Plasmon coupling section () includes carrier generation layer () that generates carriers with incident light that exits light valve section (), plasmon excitation layer () that has a higher plasma frequency than the frequency of light that is generated in carrier generation layer () excited with the light emitted from light emitting element (), and wave number vector conversion layer () that converts the light or surface plasmons generated in plasmon excitation layer () into light having a predetermined exit angle. Plasmon excitation layer () is sandwiched between first dielectric constant layer () and second dielectric constant layer ().

Display element, display device, and projection display device

Light source layer () includes substrate () and a pair of layers, namely, hole-transport layer () and electron-transport layer (), formed on substrate (). Directional control layer () includes plasmon excitation layer () stacked on a side of light source layer (), which is opposite to the side of substrate () of light source layer (), and which has a plasma frequency higher than a frequency of light output from light source layer (), and wave vector conversion layer () stacked on plasmon excitation layer (), which converts light incident from plasmon excitation layer () into light having a predetermined exit angle to output the light. Plasmon excitation layer () is sandwiched between low dielectric constant layer () and high dielectric constant layer ().

Light emitting element, light source device, and projection display device

A hologram layer () is irradiated by light from an optical element (). The hologram layer () is provided with a first hologram () that diffracts in a predetermined direction, from among incident light from the optical element (), X-polarized light in which the polarization component is in a specific direction and emits the light as X-polarized light of a first phase state (P), and a second hologram () that both diffracts in the same direction as the X-polarized light of the first phase state (P) and moreover at an equal radiation angle, from among incident light from the optical element (), Y-polarized light in which the polarization component is in a direction orthogonal to that of the X-polarized light and converts it to X-polarized light, and emits the light as X-polarized light of a second phase state (P) that differs from the first phase state (P).

Optical element, light source device, and projection-type display device

Optical elementaccording to the present invention comprises light guide body, surface plasmon excitation meansthat is provided on the interface with light guide bodyand that allows surface plasmon to be excited by a specific polarization component of light whose polarization direction is orthogonal to the first direction y in the surface of light guide body, from among light entering from light guide body, and a light generation means that includes metal layerand cover layer, and that generates light having the same polarization component as the specific polarization component of light, from surface plasmon produced in the interface between metal layerand cover layerin response to surface plasmon excited by the specific polarization component in surface plasmon excitation means. Surface plasmon excitation meansincludes a plurality of protrusions, each of which extends in the first direction y and is periodically arrayed along the second direction x orthogonal to the first direction y.

A light source device includes: a first light source () that emits first polarized light of a plurality of colors including different wavelengths; a second light source () that emits second polarized light whose polarization state differs from that of the first polarized light and that includes light of at least one color from among the plurality of colors; and a first color synthesis optical element () that synthesizes the first polarized light emitted from the first light source () and the second polarized light emitted from the second light source ().

Projection display device having light source device with color synthesis unit

A liquid crystal shutter glasses comprises a liquid crystal shutter placed within the view angle of the observer of a display apparatus wherein the liquid crystal shutter has an effective shutter region in which the transmission or shielding of incident light is controllable and a light attenuation region positioned outside the effective shutter region for attenuating incident light.

Liquid crystal shutter glasses

A liquid crystal shutter that realizes a high speed response and that solves a problem in which light leakage cannot be alleviated is provided. An alignment film coated on substrateadjacent to another liquid crystal device of substrates () and () of each of liquid crystal devices () is horizontal alignment film () and alignment film coated on the other substrate () is vertical alignment film (). A alignment treatment is performed on the horizontal alignment film coated on substrate () of liquid crystal device () having a polarizer () in a direction parallel to a light transmission axis of analyzer () and an alignment treatment is performed on the horizontal alignment film coated on substrate () of liquid crystal device () having analyzer () in a direction parallel to the light transmission axis of polarizer (). Liquid crystal materials () of liquid crystal devices () have a positive dielectric anisotropy and have twisting directions that is the reverse of each other.

Liquid crystal shutter and liquid crystal shutter eyeglass

A light control film including transparent layers and light absorbing layers arranged alternately is provided. The film is capable of controlling emission angle of light from the light source relatively strictly, and the light use efficiency thereof is improved. Further, a lighting device and a display device using thereof are provided. A transparent layer includes a high refractive index area and a low refractive index area, and further, a light reflective layer is provided at least on the light incident surface of the light absorbing layer out of the light absorbing layer and the low refractive index area. Thereby, a light control film having high light use efficiency is realized by utilizing reflection on the refractive index interface. At the same time, a lighting device capable of switching lighting angles and a display device capable of switching view angles, incorporating the control film, are realized.

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Tokyo, Japan

Goroh Saitoh