Abstract: A back light unit including a light source, a light guiding plate having an entrance surface to receive light emitted from the light source, a first emission surface and a second emission surface, a semi-transmissive/reflective member disposed to face one of the first emission surface and the second emission surface, and a chromatic correcting member, the semi-transmissive/reflective member having an incident surface to receive light emitted from one of the first emission surface and the second emission surface and an exit surface, the chromatic correcting member being configured to correct chromaticity of light emitted from the exit surface of the semi-transmissive/reflective member and emit corrected light.

Abstract: The planar light source of this invention comprises: a light guide plate made of a platelike, light-transmitting material formed with a reflection surface on a bottom side thereof, the reflection surface being formed by combining a plurality of kinds of reflection means; and an illuminating light source arranged opposite a light receiving side surface of the light guide plate; wherein the light guide plate has formed smooth a boundary on the reflection surface between the plurality of kinds of reflection means so as not to form any step between the adjoining reflection means. This construction prevents the formation of a dark-bright fringe pattern between the plurality of reflections means when the light source is illuminated.

Abstract: A planar light source unit including a light guiding plate (1) having an anisotropic diffusing surface (1h) which emits anisotropic diffusion light, and a light emitting source (2) for supplying light to the light guiding plate, the anisotropic diffusing surface being formed into a shape configured to give a gradation of the anisotropic diffusion light intensity.

Abstract: A sheet light emitting apparatus, including a light guiding plate of a translucent material and having light receiving and light emitting surfaces, a light source disposed to face the light receiving surface, and a prism structure provided on the light receiving surface, the prism structure having plural kinds of prisms having different apex angles.

Abstract: An illuminating device has an LED, a lighting panel provided corresponding to the LED for guiding light emitted from the LED to illuminate an LCD. An optical membrane is provided on a surface through which the light from the LED passes so as to correct chromaticity of the light.

Abstract: A planar light source of this invention is formed with chamfered portions at an upper end of the light receiving side surface where the light receiving side surface and the light emitting surface of the light guide plate intersect and at a lower end of the light receiving side surface where the light receiving side surface and the reflection surface of the light guide plate intersect. The chamfered portions can make indistinguishable the bright lines, that may be produced during illumination, to prevent a dark-bright fringe pattern from showing up, thereby preventing a possible degradation of liquid crystal display quality.

Abstract: An LED comprising a circuit board, a connecting electrode unit provided on the circuit board, a reflective cup provided within the circuit board, an LED element disposed in the reflective cup and connected to the connecting electrode unit, and a resin with which the reflective cup is filled, a fluorescent material contained in the resin absorbing one portion of light emitted from the LED element and changing the wavelength of the light.

Abstract: A planar light source has a light emitting source, and a light guide plate for receiving light beams emitted from the light emitting source at a front side thereof and changing direction of the light beams, discharging the light beams from an upper surface thereof. A first anisotropic diffusion surface is formed on a lower surface of the light guide plate, and a reflection member is provided on the first anisotropic diffusion surface. The first anisotropic diffusion surface is a hologram diffusion surface or a hairline diffusion surface.

Abstract: A sheet light emitting apparatus, incuding a light guiding plate of a translucent material and having light receiving and light emitting surfaces, a light source disposed to face the light receiving surface, and a prism structure provided on the light receiving surface, the prism structure having plural kinds of prisms having different apex angles.

Abstract: A planar light source unit has a transparent light leading plate and a light source provided opposite to the incidence surface of the lead plate. The light leading plate has a light discharge surface at an upper surface, and a lower plane. A prism is provided in the light leading plate at a position opposite to the light source.

Abstract: A first liquid crystal lens and a second liquid crystal lens are provided on both sides of an intermediate glass plate. The first liquid crystal lens is provided for forming an inverted image of an object, and the second liquid crystal lens is provided for inverting the inverted image, thereby forming an erecting image of the object.

Abstract: There is provided a pair of transparent upper and lower glass substrates which are disposed apart from each other so as to form a space there-between, a pair of electrodes provided on the underside of the upper substrate and on the upper surface of the lower substrate. A plurality of circular holes are formed in each of the electrodes. A liquid crystal is charged in the space. The liquid crystal has a lens construction formed by an electric current and hardened by irradiation of ultraviolet rays.

Abstract: The planar light source of this invention comprises: a light guide plate made of a platelike, light-transmitting material formed with a reflection surface on a bottom side thereof, the reflection surface being formed by combining a plurality of kinds of reflection means; and an illuminating light source arranged opposite a light receiving side surface of the light guide plate; wherein the light guide plate has formed smooth a boundary on the reflection surface between the plurality of kinds of reflection means so as not to form any step between the adjoining reflection means. This construction prevents the formation of a dark-bright fringe pattern between the plurality of reflections means when the light source is illuminated.

Abstract: A planar light source of this invention is formed with chamfered portions at an upper end of the light receiving side surface where the light receiving side surface and the light emitting surface of the light guide plate intersect and at a lower end of the light receiving side surface where the light receiving side surface and the reflection surface of the light guide plate intersect. The chamfered portions can make indistinguishable the bright lines, that may be produced during illumination, to prevent a dark-bright fringe pattern from showing up, thereby preventing a possible degradation of liquid crystal display quality.

Abstract: A hand scanner has a linear image sensor provided for reading an image. An X-roller is disposed in an X-direction and a Y-roller is disposed in a Y-direction perpendicular to the X-direction. A spherical ball is provided to project a part thereof from an opening. The X-roller and the Y-roller are urged to the spherical ball. Angular positions of the X-roller and Y-roller are detected so as to provide coordinate signals.

Abstract: An illuminating device has an LED, a lighting panel provided corresponding to the LED for guiding light emitted from the LED to illuminate an LCD. An optical membrane is provided on a surface through which the light from the LED passes so as to correct chromaticity of the light.

Abstract: An illuminating device has an LED, a lighting panel provided corresponding to the LED for guiding light emitted from the LED to illuminate an LCD. An interference filter is provided on a surface through which the light from the LED passes so as to correct chromaticity of the light.

Abstract: There is provided a pair of transparent upper and lower glass substrates which are disposed apart from each other so as to form a space there-between, a pair of electrodes provided on the underside of the upper substrate and on the upper surface of the lower substrate. A plurality of circular holes are formed in each of the electrodes. A liquid crystal is charged in the space. The liquid crystal has a lens construction formed by an electric current and hardened by irradiation of ultraviolet rays.

Abstract: A first liquid crystal lens and a second liquid crystal lens are provided on both sides of an intermediate glass plate. The first liquid crystal lens is provided for forming an inverted image of an object, and the second liquid crystal lens is provided for inverting the inverted image, thereby forming an erecting image of the object.

Abstract: A planar light source unit has a transparent light leading plate and a light source provided opposite to the incidence surface of the lead plate. The light leading plate has a light discharge surface at an upper surface, and a lower plane. A prism is provided in the light leading plate at a position opposite to the light source.