Abstract:
PROBLEM TO BE SOLVED: To provide a light source device which is capable of supplying bright light by reducing taking-in of light in a light emitting part with a configuration which is easy and is hardly broken, and to provide a projector using the same. SOLUTION: The light source device has; a light emitting part 201 which has a substrate 212 and supplies light through the substrate 212; and light propagation parts 203, 205, and 207 which are constituted of transparent members and are provided in positions which evanescent light from the substrate 212 of the light emitting part 201 reach, to propagate the evanescent light. Light propagation parts 203, 205, and 207 have a plurality of minute projection structures 204 on incidence surfaces thereof on the side of the light emitting part 201 and have optical elements 207 for emitting light transmitted through light propagation parts 203, 205, and 207, on exit surfaces thereof on the opposite side. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To install a screen without securing a large installation place. SOLUTION: The screen 1 on which a picture is displayed by receiving projected light L is equipped with a plate type transparent member 22 and transmittance changing parts 23 and 24 arranged on either surface side of the member 22 and changing the transmittance of external light. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an image display device which is small in size and secures safety of an observer. SOLUTION: An image display device 100 is provided with a laser light source 101, a scanning section 103, an optical path converting section 105 and a casing 110, and displays an image formed with modulated light beams. An emitting section 107 is formed on the casing 110 to emit the light beams whose light path is converted by the optical path converting section 105 to the outside of the casing 110. The emitting section 107 is arranged at the place where the light beams being deflected by the scanning section 103 are made incident on a prescribed region with an intensity that is at least equal to or smaller than a prescribed value. The optical path converting section 105 is arranged at the place where the area of the scanning region of the light beams which have been reflected on the optical path converting section 105 at a place that is separated by a prescribed distance from the scanning section 103 is made greater than the area of the other scanning regions that are separated by the prescribed distance from the scanning section 103 when the optical path converting section 105 is not arranged. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent the unevenness of a projection image resulting from an electrode formation area in a solid light emitting element, its manufacturing method, and a projector. SOLUTION: The solid light emitting element is provided with a solid light emitting element chip 12 that emits a light by applying a current and an electrode 16 for applying the current to the solid light emitting element chip 12, and the electrode 16 is provided on the outgoing surface of the solid light emitting element chip 12. An optical path changing means 14 is provided on the outgoing surface of the solid light emitting element chip 12 to mask visually an electrode formation area wherein the electrode 16 is formed. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an illuminating device which achieves illumination of high illuminance by efficiently using light sources from a plurality of LEDs. SOLUTION: The LEDs 21ca to 21cg are substantially most densely arranged. This increases the mount density of the LEDs 21c, which are solid light sources, and achieves uniform illumination by efficiently using light sources from the LEDs 21ca to 21cg. In a G-light illuminating device 21, first illuminating light IG from a first light source unit 21a is made incident on a liquid crystal light valve 31 via a condenser lens 21f in an overlapping manner. However, it is preferable that the first light source unit 21a be a point light source in view of illumination efficiency. Although the point light source is easily obtained by composing the light source out of a single LED, a sufficient amount of light cannot be easily obtained. To counteract this, the plurality of LEDs 21c are arranged substantially highly densely. Thus, a sufficient amount of illuminating light is obtained while uniform illumination is achieved. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To enable an LED to be more increased in the volume of light extracted per unit injected electric charge than a conventional one in which an insulating layer 15 is not provided so as to improve the LED in brightness. SOLUTION: A light source device 1 has a configuration where a solid-state light source 12 is mounted on a base 10 in a face-up manner, and a bonding pad 14 is provided on an electrode 13 that is located on the one surface of the light source 12 opposite to its other surface confronting the base 10. An insulating layer 15 is interposed between the light emitting layer of the solid-state light source 12 and the electrode 13 so as to prevent electric charge from being injected into the light emitting layer located below the pad 14. By this setup, electric charge is injected into only a part of the light emitting layer that is conducive to lighting. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an image display method and a projector which is capable of reducing adverse effect to an eye and is safe even on the situation that a beam-like light is directly made incident into the eye of user. SOLUTION: The image display method comprises a beam light generating process 101 of generating at least two beams of light LR, LG, LB which are modulated in accordance with image signals and an optical scanning process 104 of scanning the beam-like light LR, LG, LB generated in the beam light generating process 101 in the two-dimensional direction and emitting the same to an observer's side. Therein, all beam-like light LR, LG, LB scanned in the optical scanning process 104 have respective strengths of the prescribed value or less and have spatial spacings d1, d2, d3 of the prescribed value or more to each other in any face in the space of the observer's side. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a projector of a projection image that has high contrast and improved color balance, by reducing the projection of light that does not contribute to the formation of the projection image. SOLUTION: The projector comprises a first light source section 101RB; a second light source section 101G; a spatial light modulation device 104; and a projection lens 105. The first and second light source sections 101RB and 101G are provided at positions that are nearly symmetrical with respect to the projection lens 105. The spatial light modulation device 104 comprises a first member 110 that has a plurality of movable mirror elements for selectively moving the first and second reflection positions and shields light reflected from a movable mirror element in an intermediate reflection position state and the non-movable section of the spatial light modulation device to the first light source section 101RB; and a second member 112 for shielding the light reflected from the movable mirror element in the intermediate reflection position state and the non-movable section of the spatial light modulation device in the direction of the second light source section 101G. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a spatial light modulation device and a projector, in which predetermined gradation modulation is performed at a low cost and in a short time. SOLUTION: The device has a plurality of movable mirror elements 207 which selectively move to a first reflection position, a second reflection position and an intermediate reflection position respectively, and a first electrode 205 or a second electrode 208 which applies voltage corresponding to an image signal. The movable mirror element 207 reflects incident light to the direction in which substantially all of the light beams is made incident to the incident pupil ENP of a projection lens 105 when the mirror element 207 is at the first reflection position, reflects incident light at the second reflection position to a direction different from the incident pupil ENP of a projection lens 105 when the mirror element 207 is at the first reflection position, and reflects the incident light of an amount corresponding to the image signal to the direction in which the light is made incident to the incident pupil ENP of a projection lens 105 when the mirror element 207 is at the intermediate reflection position. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a video display device and so on capable of providing a fine projection image without projecting unnecessary light in a prescribed direction. SOLUTION: The video display device includes a light source part 101RB for 1st color light, a light source part 101G for 2nd color light and a tilt mirror device 104 consisting of a modulation area 104a and a non-modulation area 104b formed on the peripheral part of the modulation area 104a. When the light source part 101RB for the 1st color light is turned on, a movable mirror element 110 in the non-modulation area 104b is in an off-state for the 1st color light, and when the light source part 101G for the 2nd color light is turned on, the movable mirror element 110 in the non-modulation area 104b is in an off-state for the 2nd color light. COPYRIGHT: (C)2005,JPO&NCIPI