Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanning device for displaying image with high color reproducibility by using a beam of light, and to provide an image display device. SOLUTION: The optical scanning device includes at least four light source parts 101R, 101Y, 101G1, 101G2 and 101B supplying the beam of light having spectra with mutually different wavelengths and a scanning part 200 for scanning the beam of light from the light source parts 101R, 101Y, 101G1, 101G2 and 101B to a first direction and a second direction substantially orthogonal to the first direction. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanner in which a plurality of color light beams are efficiently scanned according to the output balance of the respective color light beams. SOLUTION: The optical scanner includes: a plurality of light source parts 101 which supply light beams; and a scanning part 200 which scans the light beams from the light source parts 101 in X-direction which is the first direction on a screen 110 which is a region to be irradiated and in Y-direction which is the second direction which is substantially perpendicular to the first direction. The light source part 101 is provided with at least a light source part 101R for first color light which supplies first color light beam and a light source part 101G for second color light which supplies second color light beam, and the light source part 101R for first color light and the light source part 101G for second color light are different in numbers from each other. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an illuminator or the like capable of reducing the spread of luminous flux and supplying light with high efficiency. SOLUTION: The illuminator has: light emitting parts 101 and 102 supplying light; a polarized light separation part 108 separating the light from the light emitting parts 101 and 102 to polarized light in a first vibrating direction and polarized light in a second vibrating direction; and reflection parts 103 and 104 reflecting the light advancing in a direction from the polarized light separation part 108 to the light emitting parts 101 and 102 to the direction of the polarized light separation part 108. The polarized light separation part 108 composes the polarized light in the first vibrating direction transmitted through the polarized light separation part 108 with the polarized light in the second vibrating direction reflected by the polarized light separation part 108 and makes the light advance to the direction of a surface to be irradiated I. Furthermore, the illuminator has a uniformization part 111 making the intensity distribution of the luminous flux nearly uniform and shaping the outside shape of the luminous flux to nearly similar shape to the surface to be irradiated I, and a polarized light changing part 112 changing the light composed by the polarized light separation part 108 to either the polarized light in the first vibrating direction or the polarized light in the second vibrating direction. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a light source device capable of supplying a plurality of light beams close to each other and an image display device using the light source device. SOLUTION: The light source device includes a plurality of light source parts 201, 202, and 203 for supplying light beams and an optical path conversion part 205 which converts optical paths of the light beams incident from the light source parts 201, 202, and 203 by emitting the light beams so as to reduce intervals of the light beams. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanner and the like capable of stably performing scanning of light. SOLUTION: The optical scanner 120 performing scanning of light by periodically displacing a reflection mirror 104 has: a detection part 406 for detecting a displacement amplitude of the reflection mirror 104; a driving frequency controlling part 411 for controlling the frequency for driving the reflection mirror 104; a driving voltage/current controlling part 412 for controlling voltage or current for driving the reflection mirror 104; and a switching part 418 for switching the driving frequency controlling part 411 and the driving voltage/current controlling part 412 which control driving of the reflection mirror 104. The switching part 418 performs switching so that driving of the reflection mirror 104 is controlled by the driving frequency controlling part 411 when difference between a target value and an amplitude detected by the detection part 406 is a prescribed value or more and driving of the reflection mirror 104 is controlled by the driving voltage/current controlling part 412 when the difference between the target value and the amplitude is less than the prescribed value. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a light source controller, a light source control method, and an image display apparatus using the light source controller which realize facilitation of display of an image having high resolution and an image having a large number of gradations, with an accurate gradation. SOLUTION: The light source controller 120 controlling driving of a light source part for supplying light modulated according to an image signal has amplitude conversion parts 502 and 401 assigning at least one bit of the image signal and converting the amplitude of a pulse signal according to the number of the assigned bits and a pulse signal forming part 504 forming the pulse signal with the amplitude converted by the amplitude conversion parts 502 and 401. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanner for obtaining high quality image by scanning light while sharing a scanning region by means of a plurality of light sources, and to provide an image display apparatus using the optical scanner. SOLUTION: The optical scanner comprises a plurality of light source parts 101, 102, 103 which supply beam-like light and a scanning part 104 which scans light from a plurality of the light source parts 101, 102, 103 respectively on the scanning regions of every light source parts 101, 102, 103, wherein the light source parts 101, 102, 103 supply light to irradiation regions smaller than the scanning regions with respect to the direction in which the scanning part 104 scans light. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent an inadvertent output of high intensity laser beam toward an observer. SOLUTION: A projector of rear-projection type comprises a light source 101 that outputs a laser beam and a scanner 106 that scans a screen 120 with the laser beam. In the projector, when a laser beam with energy exceeding an accessible emission limit due to failure of the light source 101 or the scanner 106 is outputted, at least one optical member (a lens optical system 103, a scanner 106, a reflection mirror 109, a screen 120 or the like)located in an optical path of the laser beam is arranged so as to be broken or altered in quality and to prevent the beam with energy exceeding the accessible emission limit from being output from the screen 120. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a light source device which is small in size and high in efficiency, makes uniform light obtainable, and is high in flexibility of design, and to provide a method for manufacturing the light source device, and a projector equipped with the light source device. SOLUTION: The light source device has a solid light emitting chip 101 for supplying G which is light of a prescribed wavelength region, a support 109 constituting a solid light emitting chip supporting section for supporting the solid light emitting chip 101, a package mold 107, a heat sink 105, a light guide 113 for reflecting the G light and emitting the light to an illumination direction IL, and a support 109 which is a light guide support section for supporting the light guide 113. An exit surface 101b of the solid light emitting chip 101 and an incident end surface 113b of the light guide 113 are disposed apart a prescribed spacing h. The solid light emitting chip 101 is an LED flip-chip of, for example, an InGaN system. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a display device capable of accurately controlling a display panel in accordance with a display area and displaying an image with an accurate amount of light in the display device where the display panel is controlled by optical addressing. SOLUTION: The display device is provided with: a display panel 110; an optical system 120 for control light; scanning position detection parts 132, 134 for detecting that control light L is scanning the display area AR2 of the display panel 110; and a control part 130 provided with a scanning speed operation part for calculating the scanning speed of the control light L in each pixel. The control part 130 controls the optical system 120 for the control light L in accordance with an image signal only when the control light L is scanning the display area AR2 on the basis of the detection result from the scanning position detection parts 132, 134, and corrects, on the basis of the calculated scanning speed, the amount of the control light L modulated in accordance with the image signal so that a prescribed pixel exhibits a required gradation level. COPYRIGHT: (C)2005,JPO&NCIPI