Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device of a bulb shape which can provide high light intensity in the lateral surface direction even when using an LED light source or the like, can provide visual quality like the conventional filament lamp capable of directly seeing a filament or a candle by using the LED light source.SOLUTION: A lighting device of a bulb shape includes: a substrate 2 having a top face 2a; a light source 4 arranged on a substrate top face; and a translucent cover 6 which is formed in a dome shape having a lower end opening 6a, has transparency, has the lower end opening side fixed to the substrate top face and covers a light source therewith. The translucent cover is formed such that a thickness of a wall part is smaller than the diameter of the lower end opening. The translucent cover 6 has a plurality of prisms 10 disposed on the whole region of a dome-shaped inner surface or outer surface, the prisms change a latitude direction of light beam made incident to the southern hemisphere direction of the translucent cover when the vertex of the dome-shaped translucent cover is set as north pole and emit the light and a virtual image of the light source is formed on a position floated up from the substrate top face when being viewed through the translucent cover.
Abstract:
PROBLEM TO BE SOLVED: To provide a luminaire in which appearing light color can be changed into natural white color even if a translucent cover with high light scattering characteristic is used and at the same time, anxiety about disturbance of biological clock caused by blue-light emitting and adverse effect against eyeballs can be reduced.SOLUTION: This invention relates to a luminaire comprising a base member 20, a light source 50 for discharging visible light with directivity and a translucent cover 60 covering the light source 50 in which the translucent cover 60 has some dispersed diffusion fillers with particle diameter of 1 μm or more and 100 μm or less in transparent resin, total light transmittance of 70% or less, a translucent cover absorption rate spectrum R attained by dividing light flux of difference spectrum ΔS got by subtracting a second spectroscopy spectrum S2 with translucent cover 60 from a first spectroscopy spectrum S1 without translucent cover 60 with light flux of the first spectroscopy spectrum S1 has an absorption ratio of 1.6 to 5.0 times that a value of translucent cover absorption ratio spectrum R with a wavelength of 450 nm is divided by a value of translucent cover absorption ratio spectrum R with a wavelength of 550 nm.
Abstract:
PROBLEM TO BE SOLVED: To provide a flat lamp device that can irradiate from a side face to a back face side.SOLUTION: The flat lamp device includes a flat base material 2, a light source 4 having a light distribution with strong directivity in a normal direction arranged on the base material, and a light-transmitting cover 6 for covering the light source. The light-transmitting cover 6 has a light taking-in part 6a arranged to cover at least a part of an upper surface of the light source, and a light guide emitting part 6b for emitting the taken light to a side face or a back face side of the base material by making the taken light curve and guide from the light source to the outside.
Abstract:
PROBLEM TO BE SOLVED: To provide a flat lamp device capable of irradiating all from side faces to a rear face.SOLUTION: The flat lamp device is provided with a flat base material 2, a plurality of light sources 4 arranged at peripheral areas on the base material and having light distribution with high directivity in a normal direction, and a translucent cover 6 covering the light sources. The translucent cover is provided with a hollow protruded part 10 opposed to at least parts of the light sources 4 and protruded in a direction away from the base material.
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device capable of irradiating light up to a side-face or a rear-face direction and capable of being easily manufactured and moreover, having a high heat radiating function.SOLUTION: The lighting device is provided with a base material 2, light sources 6 arranged on a front face part of the base material, and a light guide body 7 which is arranged to cover at least a part of the light sources and guides at least part of light emitted frontward from the light sources. The light guide body includes a light-emitting face which is exposed directly to the outside of the device and emits the light guided by the light guide body toward a side direction or a rear-face direction of the light sources.
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device capable of expanding an emitting range of light in a side direction and having high productivity.SOLUTION: The lighting device includes a base material 2, a light source 6 emitting visible rays and having directivity, and a light-transmitting cover 4 with a light-transmitting range for covering at least a front of the light source and emitting light emitted from the light source to the outside. The light-transmitting cover is formed in a dome shape having a non-circular cross section and made of a material wherein diffused fillers are scattered in its volume. Further, an aspect ratio wherein a height of the light-transmitting range in an optical axis direction is divided by a width of an end at a back face side is 0.6 or larger in a shape wherein it is longer than it is wide, and a transmittance of the light-transmitting cover is 70% or below.
Abstract:
PROBLEM TO BE SOLVED: To provide an illuminating device with both energy saving and a high contrast ratio attained, as well as a liquid crystal display equipped with the same. SOLUTION: The illuminating device is arranged on a rear face of a display panel for irradiating light on the panel, and is provided with a plurality of independent divided light source units, and light-dimming units each making up a secondary light source unit constituted of one, or two or more light source units aligned. Individual luminance profiles of the light-dimming units on the display panel consist of a constant-luminance region and a varied luminance region, a light-emitting area of the former being 50% or more of a dimming region area occupied by the light-dimming units. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical filter that makes it possible to display an image of good quality by making the luminance uniform over the entire screen, and to provide a display device equipped with the optical filter. SOLUTION: An optical filter 100 applied to the display device includes a light-transmissive support and has a maximum absorption wavelength in a range of 575±20 nm in a wavelength region of 450 to 650 nm. This optical filter 100 satisfies an inequality 0.75≤T1(λ) / T2(λ)≤0.90, where T1(λ) is the transmittance of the central part of the support at a specified wavelength λ, and T2(λ) is the transmittance of a circumferential part of the support at a specified wavelength λ. The optical filter 100 further satisfies an inequality 0.95≤(T1(λ1) / T2(λ1)) / (T1(λ2) / T2(λ2))≤1.05, where λ1 and λ2 are two arbitrary wavelengths between 400 and 700 nm. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To improve a diffusion reflectance and a mirror surface reflectance of a light absorbing layer in an image display device such as a CRT. SOLUTION: The image display device has a light absorbing layer containing manganese oxide or a solid solution of manganese oxide and ferric oxide with an average particle size of 10 to 500nm. The manganese or the solid solution of the manganese oxide and the ferric oxide is preferred to be acicular particles with a major axis of 50 to 500nm. With the acicular particles, peeling off of the light absorbing layer is done away with and display defects can be prevented. COPYRIGHT: (C)2004,JPO
Abstract:
PURPOSE: To easily manufacture a filter pattern by applying rinse treatment to remove the second pigment layer formed on the first pigment layer obtained by means of exposure-hardening-treatment, by using a pigment solution containing an adhesion controlling agent at least in one part. CONSTITUTION: A silica or aluminosilane film is formed in a whole surface of a glass substrate 1. A photoabsorptive layer 2 of prescribed pattern of graphite particle is formed on this substrate 1. Next on this layer, after applying a blue pigment dispersed solution dried, exposure hardening and rinsing is performed through a color select filter, to form a blue color pigment layer 3. Then, by using a green color pigment dispersed solution, a green color pigment layer 5 is formed by means of exposure hardening and rinse treatment. A red color pigment dispersed solution is applied to be dried to form a red color pigment layer 6 on this substrate 1. Here, in each pigment dispersed solution, an adhesion controlling agent of silica, Li-silicate, alumina, etc., of 0.1μm or less grain size is contained. Next, by rinse treatment, each color pigment layer 3, 5, 6 of prescribed pattern is obtained. Thereafter, each color fluorescent material layer 7 to 9 is provided.