Abstract:
PROBLEM TO BE SOLVED: To provide a surface light source device having a structure that damages are hard to be generated on a member supporting a diffusion plate, and that dust (rubbish, powder) or the like is hard to be generated. SOLUTION: The surface light source device 40 which illuminates a transmissive type liquid crystal display device having a display region constituted of pixels arranged in a two-dimensional matrix from the rear face is provided with a diffusion plate 61 opposed to the liquid crystal display device, and composed of a plurality of surface light source units 42, and the respective surface light source units 42 are provided with a light source 41, and a support wall 44 to support the diffusion plate 61 is arranged and installed between the surface light source unit 42 and the surface light source unit 42, and the apex face 45 of a support wall 44 is adjacent to the diffusion plate 61. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To integrally provide a support member for supporting a diffuser plate to a light emitting diode, and thereby to prevent unevenness in color and brightness. SOLUTION: The light emitting diode is structured to be integrally provided with a light emitting part comprising a light emitting device and a support having a spacer function. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve assembly workability and to enhance production efficiency by providing the drive assembly with coils for respective driving an objective lens in a focusing direction and a tracking direction and projectingly providing the outer peripheral surface of an objective lens holding body 4 for holding the objective lens with coil winding guides and directly winding the coils thereto. SOLUTION: The opposite two surfaces on the long side of the outer peripheral surface of the objective lens holding body 4 are projectingly provided with the coil winding guides 14 for winding the focusing coils 8 and the opposite two surfaces on the short side with the coil winding guides 15 for winding the tracking coils 9. The focusing coils 8 and the tracking coils 9 are respectively directly wound around the winding guides 14 and 15 to be projectingly disposed on the outer peripheral surface of the objective lens holding body 4. The coil winding guides 14 and 15 are molded of a resin integrally with the objective lens holding body 4. These guide are respectively projected perpendicularly from the outer peripheral surface of the objective lens holding body 4 and are formed in continuation with the front ends of the axial central parts to be wound with the coils.
Abstract:
PURPOSE:To provide the biaxial actuator of optical pickup having good assembly workability and is improved in control performance to enable a cost reduction. CONSTITUTION:A bobbin 1 having an objective lens 2 and a printed coil 3 is supplied with electricity from a junction substrate 6 via four pieces of metallic leaf spring 4, by which the driving of the biaxial directions, focusing direction and tracking direction of the information tracks of the optical disk, is executed. The leaf springs 4 are temporarily and temporally fixed simply by fitting the springs into grooves 9a, 9b, etc., of the biaxial holder 9 of the junction substrate 6 and, therefore, the efficiency of the joining from above the leaf springs 4 temporally fixed into the grooves 9a, 9b, etc., is possible. Since this UV curing type gel has a high flow property before irradiation with UV rays, the easy pouring of the gel into the grooves 9a, b is possible. The gel is cured by the subsequent irradiation with UV rays to act as a damper material capable of fixing the leaf springs 4 with good accuracy. The vibration clamping property is thus improved.
Abstract:
PURPOSE:To secure the stable floating characteristic of a magnetic head slider against a magnetic disk by withdrawing small protrusions for landing by a driving device back to their height not to project downward from a slider surface and holding the slider surface to be a flat and specular surface. CONSTITUTION:At the time of recording and/or reproducing a hard disk 11, a voltage to be impressed upon plural piezoelectric elements is cut off, and thickness of these elements 10 is withdrawn in the direction of an arrow (a), so that contact surfaces 9b of these small protrusions 9 are formed to be incorporated as the slider surface. Then, the whole slider surface 5 becomes the flat and specular surface, and hence floating force by an airflow in the direction of an arrow (c) to be generated attending upon the rotation of the hard disk 11 under high speed rotation in the direction of the arrow (c) is uniformly received by the whole slider surface 5. Then, at the time of stopping, the voltage is impressed upon the plural piezoelectric elements 10, so that the thickness of these elements 10 is expanded in the direction of an arrow (b), and hence the plural small protrusions 9 are projected downward from the slider surface in the direction of (b), thus preventing the slider 1 from sticking to the disk.
Abstract:
PURPOSE:To realize an apparatus for measuring thickness and three dimensions enabling execution of continuous automatic measurement and being small in size, noiseless and improved in precision in measurement, by displacing the fore end parts of projecting pieces by combining vibrations of first and second vibrators of an ultrasonic linear motor having a specific structure. CONSTITUTION:An actuator 2 is provided with an elastic body 20 and a pair of first vibrators 21 and 22 formed of piezoelectric ceramic are stuck on the lower side of the elastic body 20. A second vibrator 25 formed of laminate-type ceramic is fitted between the lateral sides of projecting pieces 23 and 24 connected to the elastic body 20. By combining vibrations by the first vibrators 21 and 22 and the second vibrator 25, the fore end parts of the projecting pieces 23 and 24 are so displaced as to draw circular or elliptical tracks. A slider 3 or the actuator 2 being in contact with the fore end parts of these projecting pieces 23 and 24 are made to be contactors coming into contact with a substance to be measured, and the thickness of the substance to be measured can be measured automatically by the slider 3 or the actuator 2 being fed.
Abstract:
PROBLEM TO BE SOLVED: To provide an image display device which achieves the reduction of cost and miniaturization by reducing the number of image projection elements while securing high image quality. SOLUTION: The image display device is equipped with one image projection element 2 emitting an image as luminous flux in a time-division manner, and a polygonal mirror 14 made variable so that the direction of the optical axis of the luminous flux emitted from the image projection element 2 may be different between a certain time and the following time which are divided by time-division. The luminous flux emitted from the image projection element 2 is varied, therefore, to a plurality of optical axis directions by time-division, and respectively projected to the different areas of a screen 5. Since the luminous flux as the image is emitted from the image projection element 2 by every time-division in such a case, the number of image projection elements can be reduced. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a surface light source device having a structure which hardly generates luminance unevenness between adjacent surface light source units. SOLUTION: The surface light source device for lighting a transmissive liquid crystal display device from a rear surface is provided with a diffusing plate 61, and is formed of P×Q surface light source units 42. Light sources 41 provided in the surface light surface units 42 are respectively controlled. A barrier rib 44 partitions between the surface light source unit 42 and the surface light source unit 42. A clearance exists between a top face 45 of the barrier rib 44 and the diffusing plate 61. The barrier rib 44 is formed of a transparent material. In letting a thickness direction of the barrier rib as an X direction, an extending direction as a Y direction, and a height direction as a Z direction, a length along the X direction of a part 45' corresponding to the top face 45 of the barrier rib 44 in a barrier wall cross sectional shape when the barrier rib 44 is cut in an XZ plane passing a center of the light source 41 is longer than a length along the X direction of other part of the barrier rib 44 in the barrier rib cross sectional shape. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a stereoscopic image display apparatus capable of forming stereoscopic images of high image quality by properly arranging a plurality of projecting elements and optical paths projected from them. SOLUTION: The stereoscopic image display apparatus 10 uses mirrors M1 and M2, thereby reflecting projection light 15 and so on of a second projecting element group 5 and so on toward a screen 1. There is a limit to the degree to which the size of each individual projecting element is reduced. Accordingly, using the mirrors M1 and M2, thereby reflecting light and displaying images makes it possible to minimize a pitch between the optical axes or the image pitch of each of the projecting element groups 3, 5, and 7, which is displayed on the screen 1 or the eyes of an observer 101. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce color unevenness and luminance unevenness of a backlight by providing a transparent light guide plate with a planar optical element. SOLUTION: In a backlight device to illuminate a liquid-crystal display panel from the back side which comprises a point light source as a light source and a transparent plate above this point light source, the transparent plate is provided with the planar optical element which has the function of controling a direction of travel of light emitted by the point light source. COPYRIGHT: (C)2007,JPO&INPIT