Abstract:
A light guide is disclosed. The light guide includes an incident surface, an exit surface, and a light guide section. Light emitted from a plurality of light emitting devices disposed in line enters from the incident surface. The exit surface is formed in a shape causing light to be concentrated. The light which has entered from the incident surface exits from the exit surface. The light guide section is bent. The volume of the light guide gradually increases in a direction from the incident surface to the exit surface.
Abstract:
The light source device of a display device according to the present invention has an optical waveguide, a cone sheet, and a light source disposed along the side surface of the optical waveguide. The light-emitting surface of the optical waveguide is flat, and a tilted surface that is tilted towards the light source with respect to the light-emitting surface is formed on the light-diffusing surface. The cone sheet has a flat plate and a plurality of circular cones arranged two-dimensionally on the light-incident surface of the flat plate. The central axes of the circular cones are parallel to each other. The invention provides a light source device that can be made thin and is capable of increasing the directivity of emitted light in two dimensions.
Abstract:
PROBLEM TO BE SOLVED: To provide a high-luminance and high-definition image display device capable of preventing generation of an optical defect such as a white spot while restraining deterioration of luminance performance in the image display device using a surface light source device with an edge light method. SOLUTION: The image display device includes a light guide body, a prism sheet, a primary light source, and a display panel. A light reflection surface 44 of the light guide body has a plurality of lens rows 44a. The plurality of lens rows 44a are extended substantially along a direction perpendicular to a light incident end face 41, and are arranged nearly in parallel with each other. A plurality of projected structures 45 where they are spattered are attached on the light reflection surface 44. Height projected from the light reflection surface 44 is 2 μm or more on each of the plurality of projected structures 45. On the light reflection surface 44, two or more of the other projected structures 45 are existed within a circular range having a radius of 100 times the height of the projected structure around an arbitrary projected structure 45 as the center. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
An optical arrangement comprises a light guide and a light source for illuminating the light guide. The light guide comprises a transparent substrate layer and a transparent layer. The light guide has a light extraction surface on a surface of the substrate layer. The transparent layer is arranged on the surface of the substrate layer opposite to the light extraction surface, or the transparent layer is arranged on the light extraction surface of the substrate layer. The transparent layer contains means for improving light extraction. Further, a method for production a light guide is provided.
Abstract:
PROBLEM TO BE SOLVED: To achieve a thin and long surface light-source member that achieves a semi-transmissive liquid-crystal display device which has excellent display characteristics without: a decrease in yield in a backlight assembly process; the occurrence of assembly errors; and deterioration in light-utilization efficiency of the backlight. SOLUTION: A surface light-source member 1 includes: a surface light-source element 3, having at least one or more light-emitting means 3a and thin-plate-like light-guide bodies 3b; and an optical film layer 2. The light-guide body 3b at least has a long plastic film. The optical film layer 2 is formed on the light-emitting face of the surface light-source element 3 via an adhesive layer 4. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a light guide plate manufacturing device capable of forming recessed pattern marks in a shape approximate to a design value with respect to the principle plane of a light guide plate base material by controlling a machining condition using a horn for ultrasonic machining for the light guide plate base material. SOLUTION: The light guide plate manufacturing device has a light guide plate fixing part to fix the light guide plate base material which is a base material formed into a light guide plate, the horn for ultrasonic machining to form a recessed part by partially melting the principle plane of the light guide plate material fixed to the light guide plate base material fixing part by ultrasonic vibration, a moving mechanism to move the horn for ultrasonic machining along the principle plane of the light guide plate base material and depress it to the principle plane of the light guide plate base material, and a control part to control the horn for ultrasonic machining and the moving mechanism so as to hold the position of the horn for ultrasonic machining with ultrasonic waves continuously applied to the horn for ultrasonic machining after forming the recessed part in the light guide plate base material down to a prescribed depth. COPYRIGHT: (C)2011,JPO&INPIT