Patent application number | Description | Published |
20090051886 | Illumination Device and Projector - An illumination device includes a light source device including an ellipsoidal reflector with a reflecting concave surface and a light emitting tube having an emission center in the vicinity of a first focal position of the ellipsoidal reflector, and defining a first focal position and a second focal position of the ellipsoidal reflector in a cross-sectional plane in a first virtual plane including a center axis of the ellipsoidal reflector as F | 02-26-2009 |
20090207488 | SCREEN AND PROJECTION SYSTEM - A screen includes a screen sheet including a lens array having a plurality of element lenses arranged in a two-dimensional plane on the front side of the screen, a plurality of reflection surfaces disposed on the backside of the lens array, the plurality of reflection surfaces inclined to the two-dimensional plane, and a plurality of scattering portions that scatter the light directed from the plurality of reflection surfaces toward the front side of the screen. At least one of the plurality of element lenses is a combined lens comprised of a set of two lens portions offset from each other obtained by relatively shifting optical axes of the lens portions, and the reflection surfaces correspond to the respective combined lenses. | 08-20-2009 |
20100039703 | METHOD OF MANUFACTURING SCREEN AND SCREEN - A method of manufacturing a screen having a screen substrate provided with a plurality of three-dimensional shape units disposed two-dimensionally on a front side of the screen substrate, includes: forming a first film by applying a first film forming material to be an antireflection film to at least part of surfaces of the three-dimensional shape units among the screen substrate; and forming a second film by applying a second film forming material to be a reflecting film with a predetermined incident angle to the screen substrate, the reflecting film on at least part of the antireflection film. | 02-18-2010 |
20100067107 | SCREEN AND METHOD OF MANUFACTURING SCREEN - A screen includes: a plurality of three-dimensional shape units disposed two-dimensionally on a front side of a screen substrate; a reflecting film formed at least on an area corresponding to projection light entering a surface of the plurality of the three-dimensional shape units of the screen substrate; and a light absorbing film formed on an area corresponding to outside light entering the surface of the plurality of the three-dimensional shape units, wherein at least a part of the light absorbing film is formed so as to overlap a part of the reflecting film on the front side of the reflecting film. | 03-18-2010 |
20110157566 | COLLIMATOR LENS UNIT, ILLUMINATING DEVICE, AND PROJECTOR - A collimator lens unit includes at least two lenses and substantially collimates a beam of light emitted from a solid-state light source unit of a Lambert emission type, wherein at least two faces of incidence faces and emission faces of the lenses constituting the two lenses are aspheric faces, one front aspheric face located close to the solid-state light source unit has a function of changing a luminous flux density distribution of the beam of light emitted from the solid-state light source unit to a predetermined luminous flux density distribution in which the luminous flux density in the vicinity of an optical axis of the collimator lens unit is higher than the luminous flux density in a peripheral portion separated from the optical, the rear aspheric face farthest from the solid-state light source unit has a function of substantially collimating the beam of light. | 06-30-2011 |
20120002173 | PROJECTOR - A projector includes: an illumination device including plural solid-state light sources, plural collimator lenses that are provided to correspond to the plural solid-state light sources and substantially parallelize lights generated in the plural solid-state light sources, respectively, a focusing system that focuses the lights from the collimator lenses on a predetermined focusing position, and a diverging light generation part that is located near the focusing position and generates diverging light in an incident region where the light from the focusing system enters; a light modulation device that modulates the light from the illumination device in response to image information in a light modulation region; and a projection system that projects the light from the light modulation device, wherein an area of the incident region in the diverging light generation part is equal to or less than 1/102th of an area of the light modulation region in the light modulation device. | 01-05-2012 |
20120008098 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device | 01-12-2012 |
20120026469 | PROJECTOR - A projector according to an embodiment of the invention includes: an illumination device adapted to generate an illumination light; and a light modulation device adapted to modulate the illumination light in accordance with image information, wherein the illumination device includes a first illumination device including a fluorescence generation section adapted to generate a fluorescence from an excitation light generated by a first solid-state light source, and a second illumination device including a rod integrator optical system adapted to equalize an in-plane light intensity distribution of a colored light generated by a second solid-state light source. | 02-02-2012 |
20120133904 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes a light source section adapted to emit excitation light, a lens array adapted to divide the excitation light into a plurality of partial light beams, a light collection optical system adapted to collect the excitation light divided into the plurality of partial light beams, and a light emitting element adapted to emit fluorescence by being excited by the excitation light. | 05-31-2012 |
20120236264 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes plural solid-state light sources, plural collimator lenses, a collection system, and a fluorescent layer that generates fluorescence from at least a part of the lights from the collection system, wherein at least one anamorphic surface is provided in an optical path from the plural collimator lenses to the fluorescent layer. The plural solid-state light sources are located in positions different from focal positions of the plural collimator lenses in an optical axis direction. | 09-20-2012 |
20130027670 | PROJECTOR - A projector includes a light source, a first light separation optical system adapted to separate light emitted from the light source into first light and second light, a second light separation optical system adapted to separate the first light into third light and fourth light, separate the second light into fifth light and sixth light, and emit the third light, the fourth light, the fifth light, and the six light in directions intersecting with a plane including a light axis of the light emitted from the light source and a light axis of the first light, and a light modulation element which the third light, the fourth light, the fifth light, and the sixth light enter. | 01-31-2013 |
20130033681 | PROJECTOR - A projector includes a light source, a light collection optical system adapted to collect light emitted from the light source, and a light modulation panel adapted to modulate the light collected by the light collection optical system, the light collection optical system includes a color separation optical system adapted to separate the light emitted from the light source into a plurality of types of colored light, and a reflecting curved surface is disposed in at least a light path of the colored light with the longest light path length between the light source and the light modulation panel out of the plurality of types of colored light. | 02-07-2013 |
20130057832 | PROJECTOR - A projector includes an illumination device having a light source device emitting light, and a polarization conversion element adapted to emit light from the light source device as polarized light, a light modulation device adapted to modulate the light from the illumination device in accordance with image information, and a projection optical system adapted to project the light from the light modulation device, and the illumination device further includes a light diffusing unit disposed in at least one of upstream and downstream of the polarization conversion element. | 03-07-2013 |
20130229628 | PROJECTOR - A projector includes a solid-state light source that emits linearly polarized light, a birefringence element that converts the linearly polarized light emitted from the solid-state light source into circularly or elliptically polarized light, a diffusion element that diffuses the light having exited from the birefringence element, and a polarization conversion element that separates the diffused light having exited from the diffusion element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant first and second polarized light. | 09-05-2013 |
20130335709 | PROJECTOR - A projector including a light source apparatus that includes a fluorescent layer that produces fluorescence by irradiation of an excitation light emitted from a solid-state light source, a polarization conversion element that converts the light from the light source apparatus into polarized light, and a reflector that is disposed between the light source apparatus and the polarization conversion element, transmits light in the vicinity of the optical axis of the light source apparatus, and reflects peripheral light apart from the optical axis of the light source apparatus toward the fluorescent layer. | 12-19-2013 |
20140268063 | LIGHTING DEVICE AND PROJECTOR - A lighting device includes a light source that emits a first light flux of a first wavelength band, a fluorescence light emitting element including a phosphor layer which produces, when excited by light of the first wavelength band, light of a second wavelength band, a polarization separation element that has a polarization separation function for light of the first wavelength band and transmits or reflects light of the second wavelength band, a retardation film disposed in an optical path between the polarization separation element and the phosphor layer, a first reflector disposed in an optical path between the retardation film and the phosphor layer, and a second reflector that reflects the light produced by the phosphor layer. The first reflector reflects part of the first light flux toward the polarization separation element, and transmits the other part of the first light flux toward the phosphor layer. | 09-18-2014 |
20140268067 | ILLUMINATION DEVICE AND PROJECTOR - A illumination device includes a light source, a diffractive optical element on which light emitted from the light source is made incident, and a superimposing optical system on which diffracted light emitted from the diffractive optical element is made incident. A direction of a principal ray in the center of the diffracted light coincides with an optical axis of the superimposing optical system. Consequently, it is possible to reduce an aberration due to the superimposing optical system and to emit illumination light having a more uniform illuminance distribution. | 09-18-2014 |
20140340588 | ILLUMINATION DEVICE AND PROJECTOR - An illumination device ( | 11-20-2014 |