Patent application number | Description | Published |
20100181817 | TAPE-SHAPED LOCKING MEMBER FOR SEAT SKIN MATERIAL FIXATION, AND PROCESS FOR PRODUCING RESIN MOLDED PRODUCT WITH LOCKING MEMBER - A tape-shaped engaging member F for fixing an upholstery material to seats, which includes a hook surface fastener composed of a double Raschel-knitted base fabric | 07-22-2010 |
20100238411 | PROJECTION TYPE DISPLAY DEVICE - A projection-type display apparatus includes a light separating element that separates white light from an illumination optical system, first and second color separating elements that separate the separated white light beams into blue, green, and red light beams, three transmission-type liquid crystal light valves each for the right eye and for the left eye that modulate the color-separated light beams according to video signals, first and second color combining elements that each combine the blue, green, and red light beams that have been modulated, first and second wavelength-selective polarization rotating elements that respectively rotate the polarization direction of predetermined color lights from the first and second color combining elements so that the polarization directions of the color lights are aligned, a polarized light combining element that combines two polarized light beams that have polarization directions orthogonal to each other from the wavelength-selective polarization rotating elements, and a projection lens that magnifies and projects images respectively formed by the two combined polarized light beams. Using one projection-type display apparatus, it is possible to display stereoscopic video with little cross talk of images for the right eye and for the left eye, and no flicker, without needing high-speed response for the light valves. | 09-23-2010 |
20100328560 | PROJECTION-TYPE DISPLAY APPARATUS - Provided are an illumination optical system allowing light beams to be condensed and enter an illumination area at different angles from each other, color separating elements that separate colors of the light beams from the illumination optical systems, liquid crystal light valves that modulate the color lights to form image light for the right and the left eyes, a color combining element that combines the color light beams, a wavelength-selective polarization rotating element that rotates the polarization direction of a predetermined color light so as to align the polarization direction with that of a light beam of another color, and a projection lens that magnifies and projects images. The liquid crystal light valves are provided with an incident side microlens array that causes the light beams for the right and the left eyes to pass respectively through the right and the left eye image pixels, and an exit side microlens array that condenses the light that has passed through the pixels. The projection lens is provided with a polarized light separating element that causes the polarization directions of image light for the right and the left eyes to be orthogonal to each other. Using one projection-type display apparatus, a highly efficient stereoscopic image can be displayed with little flicker and cross talk of image light for the right eye and for the left eye. | 12-30-2010 |
20110019270 | TRANSMISSIVE SCREEN AND DIFFUSION PLATE - The transmissive screen includes, sequentially from a projection side, a Fresnel lens having a condensing function, a diffusion plate for diffusing incident light, and a front-surface protective panel disposed facing the diffusion plate across an air flow layer of a predetermined interval. The front-surface protective panel partially absorbs visible light. The visible light absorbance of the front-surface protective panel is made the highest comparing with the Fresnel lens and the diffusion plate. | 01-27-2011 |
20110032489 | IMAGE DISPLAY DEVICE - Comprising a casing containing a heat insulating part, a projector as an image display unit, a screen for displaying an image issued from the projector, and cooling part (heat exchanger, compressor) for cooling the inside of the casing, the heat insulating part includes a first heat insulating part disposed in the peripheral area of the projector for insulating from heat, and a second heat insulating part disposed in the peripheral part of the screen for insulating from heat. | 02-10-2011 |
20110234923 | LIGHTING DEVICE AND PROJECTION TYPE IMAGE DISPLAY APPARATUS USING THE SAME - A lighting device is provided which efficiently achieves a high brightness and a high image quality by using a solid light source which has long service life and does not need mercury. The lighting device includes a first light source section, a second light source section, a second rod integrator for combining lights emitted from the first and second light source sections, and a first rod integrator for guiding the light from the first light source section, to the second rod integrator. On an incident surface of the second rod integrator, a first region on which the light emitted from the first light source section is incident and a second region on which the light emitted from the second light source section is incident do not overlap each other, and the surface area of the first region and the surface area of the second region are different from each other. | 09-29-2011 |
20110292349 | LIGHT SOURCE DEVICE, LIGHTING DEVICE AND IMAGE DISPLAY DEVICE USING SUCH LIGHT DEVICE - For a lighting device for obtaining output light in the wavelengths of light of three colors of red, green, and blue, a lighting device using a semiconductor laser for the blue light has been proposed. When using this lighting device in an image display device, etc., there are problems in blue color rendering properties and reduced image quality due to speckle noise. A light source device designed to emit red light, green light, a first blue light, and a second blue light, the light source device including: a red solid-state light source; a green solid-state light source; a semiconductor laser for emitting the first blue light; and a blue light generation part for emitting the second blue light, wherein the main component of the second blue light is light in a wavelength range of wavelengths longer than that of the first blue light. | 12-01-2011 |
20120127435 | LIGHT SOURCE DEVICE AND IMAGE DISPLAY APPARATUS - A light source device includes a phosphor layer formed on a base, and an excitation light source exciting the phosphor. A dichroic mirror is arranged between the phosphor layer and the excitation light source and inclined with respect to a propagation direction of excitation light from the excitation light source. An incident region of the excitation light and an exiting region of fluorescence emitted from the phosphor belong to a space on the same side with respect to the surface with the phosphor layer disposed. In a dominant wavelength of the excitation light, the dichroic mirror has a spectral characteristic of transmitting 50% or more of light of a p-polarized component and reflecting 50% or more of light of a s-polarized component. Fluorescence emitted from the phosphor layer can be extracted highly efficiently and propagated by a compact and simple optical system. | 05-24-2012 |
20120133903 | LIGHT SOURCE DEVICE AND PROJECTION DISPLAY APPARATUS - A light source device includes: first and second solid-state light source units disposed opposite to each other, each unit including solid-state light sources; a reflection unit; a condensing part; and a fluorescence emission plate excited with a condensed light beam. The light sources in each of the units are arranged two-dimensionally with the optical axes oriented in an x-axis direction. Each column of the light sources of the first and the second light source units are arranged alternately in the y-axis direction. The reflection unit reflects the light beams from the light source units in the z-axis direction so as to be arranged into a two-dimensional array in a xy plane. A density of the reflected light beams in the x-axis direction is higher than that of the arrangement of the light sources in the z-axis direction. Light from solid-state light sources are condensed and combined efficiently, with a compact configuration. | 05-31-2012 |
20120140183 | LIGHT SOURCE DEVICE AND PROJECTION DISPLAY APPARATUS - A light source device has: a light source unit including solid-state light sources emitting blue-color light and a condensing lens; a dichroic mirror polarization separating color light into first and second polarization components; a fluorescence emission plate excited with the first polarization component, emitting fluorescence of green and red components to enter the dichroic mirror; a first retardation plate converting the second polarization component to a circularly polarized light; and a reflection plate reflecting a light passed through the first retardation plate to reenter the same. The color lights from the fluorescence emission plate and the first retardation plate are combined at the dichroic mirror. A second retardation plate converts the polarization direction of the light from the light source unit, so as to control the ratio of p-polarization and s-polarization components. Lights from solid-state light sources are condensed efficiently and a high spectrum-utilization factor is obtained. | 06-07-2012 |
20120188470 | PROJECTION DISPLAY APPARATUS - A light valve forms image lights for the right and left eyes by time division and the polarization directions thereof are switched by a retardation panel, so as to be different in the image lights for the right and left eyes from each other, enabling observation of a stereoscopic image. A black-insertion unit is configured with a black-insertion liquid crystal panel and black-insertion polarizing elements, so as to insert light-shielding periods between the image lights for the right and left eyes. The black-insertion polarizing elements is moved between positions in a image light optical path and outside the optical path. Irrespective of the response speed of the light valve, a bright stereoscopic image with a small cross talk can be observed with passive system polarization glasses, with brightness of a two-dimensional image display being ensured. | 07-26-2012 |
20120268917 | LIGHT SOURCE APPARATUS AND IMAGE DISPLAY APPARATUS - A light source apparatus includes: an excitation light source; a phosphor having, as a main fluorescence wavelength region, wavelengths of green excited by excitation light emitted from the excitation light source; a red laser light source that oscillates in a red wavelength region; an optical multiplexer that multiplexes fluorescence emitted from the phosphor and red laser light emitted from the red laser light source; and color demultiplexing optics that demultiplexes the multiplexed light into two light beams. A cutoff wavelength of the color demultiplexing optics is a wavelength in the wavelength region of fluorescence, and is shorter than the red wavelength region. | 10-25-2012 |
20130002972 | Lighting Device and Projector - A lighting device includes a first light source, a second light source of a light-emitting surface area larger than that of the first light source, first light-converging optics configured to converge light from the first light source into a first light beam, second light-converging optics configured to converge light from the second light source into a second light beam, and an illumination optical system configured to make the first light beam and the second light beam into illumination light, with a f-number of the illumination optical system for the second light beam being lower than a f-number of the illumination optical system for the first light beam. | 01-03-2013 |
20140211169 | LIGHTING DEVICE AND IMAGE DISPLAY DEVICE - This lighting device comprises a laser light source, a phosphor having a yellow phosphor that is excited by the laser light source, and a color filter on which fluorescent light emitted from the phosphor is incident. The color filter has first and second segments with different transmission spectrums, the first segment transmitting the entire wavelength band of yellow fluorescent light emitted from the yellow phosphor, and the second segment removing the short wavelength component of the yellow fluorescent light. | 07-31-2014 |
20140211170 | ILLUMINATOR AND IMAGE DISPLAY DEVICE - An illuminator | 07-31-2014 |
20140293232 | LIGHT SOURCE DEVICE AND PROJECTION DISPLAY DEVICE - A light source device includes a light source, a first dichroic mirror, and a light emitting member. The light source is configured to emit blue light substantially polarized in a first direction. The first dichroic mirror is configured to reflect not less than 80% and not more than 90% of the blue light polarized in the first direction, and to transmit more than 10% and less than 20% of the blue light polarized in the first direction, in a wavelength band of blue light. The light emitting member is configured to emit light upon being excited by the blue light reflected by the first dichroic mirror. | 10-02-2014 |