Patent application number | Description | Published |
20080259436 | Laser light source device, illumination device, image display device, and monitor - A laser light source device includes: a light source; an external resonator constituting a resonator structure with the light source; a wavelength conversion element disposed between the light source and the external resonator, and converting the wavelength of the light emitted from the light source; and a first spacing member maintaining a state in which at least the wavelength conversion element is separated from the external resonator by a predetermined distance. | 10-23-2008 |
20080259975 | LIGHT SOURCE, LIGHTING DEVICE, MONITORING DEVICE, AND PROJECTOR - A light source includes a light source unit which supplies first wavelength light, a wavelength converting unit which converts the first wavelength light into second wavelength light different from the first wavelength light, and a leakage preventing unit which prevents leakage of the first wavelength light out of the light source. The area where the light source unit and the wavelength converting unit are disposed is optically separated from the area where the leakage preventing unit is disposed. | 10-23-2008 |
20090010001 | Laser light source device, illumination device, image display device, and monitor device - A laser light source device includes: a light source; an external resonator, a wavelength conversion element converting the wavelength of part of incident light having the first wavelength into the second wavelength which is different from the first wavelength; and an optical-path conversion element causing the light that has been converted into light of the second wavelength in the process of traveling to the light source due to reflection from the external resonator to be separated into a second optical-path different from the first optical-path, and emitting a second laser light of the second wavelength. In the laser light source device, and the height of the wavelength conversion element is greater than a distance between an optical-axis of the first laser light on an end face of the wavelength conversion element which is close to the external resonator and an optical-axis of the second laser light. | 01-08-2009 |
20090027765 | WAVELENGTH CONVERTING ELEMENT, LIGHT SOURCE DEVICE, LIGHTING DEVICE, MONITORING DEVICE, AND PROJECTOR - The disclosure refers to a wavelength converting element, light source device, lighting device, monitoring device, and projector. In one example, a wavelength converting element comprises a polarization-inverted crystal including polarization-inverted layers having an inverted polarization direction and being disposed in parallel in a particular direction. The polarization-inverted layers are disposed substantially parallel with a first plane which is substantially orthogonal to the particular direction. Temperature controlling elements are configured to control a temperature of the polarization-inverted crystal, the temperature controlling elements being disposed on a second plane substantially orthogonal to the first plane. | 01-29-2009 |
20090033884 | Projector - A projector that includes a laser beam source that outputs a laser beam that is modulated based on an image signal and a screen on which the light beam is projected. The projector also includes a scanning unit that scans the laser beam within a predetermined surface and a scan monitoring unit that monitors scanning of the scanning unit and outputs a result of the monitoring. The projector further includes a beam light supply stopping unit that controls the laser beam source so as to stop output of the laser beam based on the result of monitoring output by the scan monitoring unit. | 02-05-2009 |
20090040474 | Image Display Device - An image display device includes a lighting section including a light source, a light modulation section that modulates light emitted from the lighting section in accordance with an image signal to form an image, and a scintillation reduction section that reduces the scintillation caused by the light emitted from the lighting section, and the scintillation reduction section reduces the scintillation so that a plurality of areas having different extents of reduction of the scintillation from each other is formed in the image. | 02-12-2009 |
20090059601 | LIGHT SOURCE DEVICE, LIGHTING DEVICE, PROJECTOR, AND MONITORING DEVICE - A light source device includes: a light source which emits light; an optical member through which light emitted from the light source enters; a base on which the light source is mounted; a first holding member which fixes the optical member; and a second holding member which holds the first holding member and stands on the base in the emission direction of the light emitted from the light source. | 03-05-2009 |
20090122531 | MULTI-WAVELENGTH LIGHT SOURCE DEVICE - A multi-wavelength light source device includes three light source devices. The light source device includes a plurality of light emitting elements, and a dispersing section making wavelengths of light beams emitted from the respective light emitting elements different from each other, a spectral line width of the emitted light beam in each of the light source devices is equal to or greater than 0.2 nm, a wavelength of the red light beam in the light source device for emitting the red light beam is greater than 612 nm, a wavelength of the green light beam in the light source device for emitting the green light beam is greater than 525 nm and smaller than 538 nm, and a wavelength of the blue light beam in the light source device for emitting the blue light beam is greater than 465 nm and smaller than 468 nm. | 05-14-2009 |
20090141252 | PROJECTOR - A projector that projects video light corresponding to an image signal onto a display surface includes: a light source device that emits light; a housing that houses at least the light source device; a projection lens, that is, an optical element that transmits the video light projected onto the display surface and emits the video light toword the outside of the housing; a detecting unit that detects detection light supplied to the optical element; and a control unit that adjusts a light amount of the video light on the basis of a result of the detection by the detecting unit. The projector is set such that, when the optical element is in a normal setting state, the light amount density of the video light is equal to or lower than a predetermined value on an emission surface for emitting the video light of the optical element. | 06-04-2009 |
20090243494 | LIGHT SOURCE DEVICE AND IMAGE DISPLAY APPARATUS - A light source device includes: a plurality of light emission units which emit light; a scattering unit which scatters at least a part of light received from the plural light emission units; a light detecting unit which detects a part of light emitted from the plural light emission units and scattered by the scattering unit; and a control unit which controls the plural light emission units based on detection result from the light detecting unit. | 10-01-2009 |
20090252185 | Laser light source device, illumination device, image display device, and monitor device - A laser light source device includes: a light source; an external resonator; a wavelength conversion element converting the wavelength of part of incident light having the first wavelength into the second wavelength which is different from the first wavelength; and an optical-path conversion element causing the light that has been converted into light of the second wavelength in the process of traveling to the light source due to reflection from the external resonator to be separated into a second optical-path different from the first optical-path, and emitting a second laser light of the second wavelength. In the laser light source device, and the height of the wavelength conversion element is greater than a distance between an optical-axis of the first laser light on an end face of the wavelength conversion element which is close to the external resonator and an optical-axis of the second laser light. | 10-08-2009 |
20100020289 | PROJECTOR - A projector includes: light emitting devices provided in correspondence with pixels that form an image displayed on an illuminated surface, each of the light emitting devices emitting light modulated in accordance with an image signal; and shaping optical elements provided in correspondence with the light emitting devices, each of the shaping optical elements shaping the region illuminated with the light emitted from the corresponding light emitting device, wherein the shaping optical elements form a shaped light region in a position on the light path between the shaping optical elements and the illuminated surface. | 01-28-2010 |
20100208758 | Light source device, projector device, monitor device, and lighting device - The controller | 08-19-2010 |
20110122372 | LASER BEAM SOURCE DEVICE, PROJECTOR, AND MONITORING DEVICE - A laser beam source device includes: a first light emission element and a second light emission element each of which has a light emission portion for emitting a laser beam having a fundamental wavelength, wherein the first light emission element and the second light emission element are disposed such that light emitted from the light emission portion of each of the first light emission element and the second light emission element can enter the light emission portion of the other light emission element, at least either the first light emission element or the second light emission element has the plural light emission portions, and the areas of the plural light emission portions are not uniform. | 05-26-2011 |
20110216105 | LIGHT SOURCE DEVICE HAVING WAVELENGTH CONVERSION AND SEPARATION MEANS, AND PROJECTOR - A light source device includes a light source unit emitting light of a first wavelength and a wavelength converting element converting light of the first wavelength into light of a second wavelength. An external mirror transmits light of the second wavelength toward an emission destination and reflects light of the first wavelength to resonate between the light source unit and the external mirror. A wavelength separating section transmits light converted from the first wavelength to the second wavelength while traveling from the external mirror to the light source unit and reflects light of the first wavelength in order to separate the different wavelength light. A turnback section reflects light of the second wavelength separated by the wavelength separating section toward the emission destination. In addition, the wavelength separating section reflects light of the first wavelength from the light source unit to travel toward the wavelength converting element. | 09-08-2011 |
20110228232 | ILLUMINATION DEVICE AND PROJECTOR - An illumination device includes: a light source device adapted to emit an excitation light beam; and a rotating fluorescent plate having a single fluorescent layer adapted to convert a part or whole of the excitation light beam into a fluorescent light beam. The fluorescent light beam includes two or more colored light beams, and the single fluorescent layer is formed on a circular disk, which can be rotated by a motor, continuously along a circumferential direction of the circular disk. | 09-22-2011 |
20140152964 | ILLUMINATION DEVICE AND PROJECTOR - An illumination device includes: a light source device adapted to emit an excitation light beam; and a rotating fluorescent plate having a single fluorescent layer adapted to convert a part or whole of the excitation light beam into a fluorescent light beam. The fluorescent light beam includes two or more colored light beams, and the single fluorescent layer is formed on a circular disk, which can be rotated by a motor, continuously along a circumferential direction of the circular disk. | 06-05-2014 |