Patent application number | Description | Published |
20100328617 | FLUORESCENT WHEEL, LIGHT SOURCE DEVICE AND PROJECTOR - A fluorescent wheel comprising a base with a reflective surface and a flat bottom surface, and a fluorescent layer disposed on the reflective surface of the base such that the reflective surface of the base directs, outward from the wheel, fluorescence emitted from the fluorescent layer due to its excitation by exciting light. The reflective surface of the base has an array of minute reflective structures formed thereon so as to reflect, outward from the reflective surface, fluorescence emitted substantially parallel to the flat bottom surface of the base from the fluorescent layer. | 12-30-2010 |
20100328628 | LIGHT SOURCE UNIT AND PROJECTOR - A light source unit comprising an optical wheel having a plurality of segment areas and including luminescent light emitting areas where at least two luminescent material layers having different characteristics are provided in a circumferential direction, a wheel motor for driving to rotate the optical wheel, an excitation light source for shining light on to the optical wheel, a light emitting light source and a collective optical system for collecting a light beam from the optical wheel and a light beam from the light emitting light source to the same optical path, wherein the excitation light source is selectively turned on to illuminate the at least two luminescent material layers having different characteristics which are disposed on the luminescent light emitting areas, and wherein the light emitting light source is turned on for a period of time during which the excitation light source does not shine the excitation light. | 12-30-2010 |
20110051102 | LIGHT SOURCE UNIT AND PROJECTOR - With a view to providing a light source unit which can emit light source light of high luminance and high intensity even in the small quantity of excitation light, there is provided a light source unit including an excitation light source for emitting light in a blue wavelength band, a fluorescent wheel, a light emitting device for emitting light in a red wavelength band and a light guiding optical system for guiding light emitted from the fluorescent wheel and the light emitting device to a light guiding device, wherein the fluorescent wheel is made up of a fluorescent area where a green fluorescent material layer for emitting fluorescent light in a green wavelength band is disposed and a diffuse area for converting light emitted from the excitation light source into diffuse light of which directivity is weak are disposed end to end in a circumferential direction, and wherein the green fluorescent material layer is such that a concentration of weight content of the green fluorescent material in the green fluorescent material layer relative to the fluorescent material layer and a thickness thereof are determined so that a luminescent intensity of fluorescent light emitted from the green fluorescent material layer is enhanced. | 03-03-2011 |
20110096297 | LIGHT SOURCE UNIT AND PROJECTOR - There is provided a light source unit comprising an excitation light shining device for emitting excitation light, a luminescent plate having a luminescent light emitting area on a base material and adapted to emit a luminescent light of a predetermined wavelength band by excitation light from the excitation shining device, two types of light source devices for emitting light of wavelength bands different from that of the light from the luminescent plate, a light guiding optical system for guiding the light from the luminescent plate and the rays from the light sources to a predetermined plane, and a light source control device for controlling the emission from the excitation light shining device and the light sources, wherein a synthetic light or a single-color light are emitted by controlling the emissions from the excitation light shining device and the light sources by the light source control device. | 04-28-2011 |
20120075591 | LIGHT SOURCE UNIT AND PROJECTOR - A light source unit includes an excitation light source and a luminescent wheel on which luminescent light emitting areas including, on a reflecting surface, red and green luminescent materials which respectively emit light of red and green wavelength band, when receiving excitation light, and a diffuse transmission area which diffuses and transmits excitation light, are aligned end to end in a circumferential direction. An excitation light incident surface of a luminescent material layer of the luminescent wheel has a surface with a plurality of projecting bodies. Regular quadrangular pyramids are arranged thereon in a matrix with outer boundaries of bottom portions of adjacent regular quadrangular pyramids contacting each other. The pyramids rise at a rising angle of at least 30°, and a length of one side of an outer boundary of the bottom portion of the pyramid is between 10 and 100 μm. | 03-29-2012 |
20120140185 | LIGHT SOURCE UNIT AND PROJECTOR - A projector is provided which includes a light source unit which can reduce the numbers of lenses and mirrors and which can control quantity of light of each color. | 06-07-2012 |
20120262677 | LIGHT SOURCE UNIT AND PROJECTOR - There is provided a light source unit comprising an excitation light shining device for emitting excitation light, a luminescent plate having a luminescent light emitting area on a base material and adapted to emit a luminescent light of a predetermined wavelength band by excitation light from the excitation shining device, two types of light source devices for emitting light of wavelength bands different from that of the light from the luminescent plate, a light guiding optical system for guiding the light from the luminescent plate and the rays from the light sources to a predetermined plane, and a light source control device for controlling the emission from the excitation light shining device and the light sources, wherein a synthetic light or a single-color light are emitted by controlling the emissions from the excitation light shining device and the light sources by the light source control device. | 10-18-2012 |
20130293850 | PROJECTOR HAVING LIGHT SOURCE UNIT INCLUDING EXCITATION LIGHT SOURCE, OPTICAL WHEEL, LIGHT EMITTING LIGHT SOURCE, AND CONTROLLER - A light source unit includes an optical wheel having a plurality of segment areas, the segment areas including at least two luminescent material layers having different characteristics and a transmission portion provided in a circumferential direction. The light source unit further includes a rotation driving unit for driving to rotate the optical wheel, an excitation light source for shining light onto the optical wheel, a light emitting element, and a light guiding optical system for collecting a light beam from the optical wheel and a light beam from the light emitting element to a same optical path. The excitation light source is selectively turned on to illuminate the transmission portion or the at least two luminescent material layers, and the light emitting light source is turned on for a period of time during which the excitation light source does not shine the excitation light. | 11-07-2013 |
20140078168 | LIGHT SOURCE UNIT CAPABLE OF PREVENTING DETERIORATION OF LUMINESCENT MATERIAL LAYER, ILLUMINATING METHOD OF LIGHT SOURCE UNIT, AND PROJECTOR - There is provided a light source unit including an excitation light source emitting excitation light, and a luminescent member having a transmission portion transmitting excitation light from the excitation light source, a first luminescent material layer placed beside the transmission portion on one side of the luminescent member and a second luminescent material layer placed beside the transmission portion on the other side of the luminescent member, wherein the first luminescent material layer and/or the second luminescent material layer emits luminous light by being excited by the excitation light, and wherein a guiding optical system is provided which shines excitation light which has passed through the transmission portion from the excitation light source on to the first luminescent material layer and causes luminous light emitted from the first luminescent material layer to be incident on the transmission portion. | 03-20-2014 |
20140078472 | LIGHT SOURCE UNIT AND PROJECTOR - The invention includes an excitation light source, a light distribution adjusting member on which excitation light from the excitation light source is incident, and a luminescent material which emits luminous light of a different wavelength from that of the excitation light by the excitation light which passes through the light distribution adjusting member being shone on thereto, wherein the excitation light source is disposed so that the excitation light is incident on a light incident surface of the light distribution adjusting member at a predetermined angle. | 03-20-2014 |
20140078475 | FLUORESCENT WHEEL, LIGHT SOURCE DEVICE AND PROJECTOR - A fluorescent substrate includes a base having a reflective surface and a flat bottom surface, and a fluorescent layer disposed on the reflective surface of the base such that the reflective surface of the base directs, outward from the wheel, fluorescence emitted from the fluorescent layer due to its excitation by exciting light. The reflective surface of the base has an array of minute reflective structures formed thereon so as to reflect, outward from the reflective surface, fluorescence emitted substantially parallel to the flat bottom surface of the base from the fluorescent layer. | 03-20-2014 |
20140078476 | LIGHT SOURCE UNIT CAPABLE OF SHINING LIGHT OF HIGH IN-PLANE UNIFORMITY, ILLUMINATING METHOD OF LIGHT SOURCE UNIT, AND PROJECTOR - There is provided a light source unit including an excitation light source which emits excitation light, a luminescent material which receives excitation light from the excitation light source to emit luminous light, a diffuse plate on which the luminous light is incident, and a driving device which moves the diffuse plate so as to change an entering position of the luminous light on the diffuse plate. | 03-20-2014 |
20140176916 | LIGHT SOURCE UNIT ABLE TO DIFFUSE LASER BEAM SUFFICIENTLY, PROJECTOR, AND IMAGE PROJECTION METHOD - There is provided a light source unit having a light source which emits a laser beam, a plurality of diffusing plates on which the laser beam is incident and which emit the laser beam incident thereon as diffuse light, and a driving mechanism which moves the plurality of diffusing plates, wherein the laser beam from the light source is incident on one diffusing plate of the plurality of diffusing plates, and diffuse light emitted from the one diffusing plate is incident on the other diffusing plate of the plurality of diffusing plates. | 06-26-2014 |