494 results about "Reflection function" patented technology

A surface light source device according to the invention includes a housing having an opening portion on at least one face, an LED light source held by one face of the housing opposing the opening portion, and a light guiding plate arranged at a position so as to cover the opening portion and the LED light source, wherein the light guiding plate includes a recess provided at a position corresponding to the LED light source for storing a part of the LED light source, and light quantity adjusting means provided at a bottom part of the recess for adjusting light from the LED light source, and the light quantity adjusting means includes a reflection sheet having a reflection function and a transmission function in which a total light transmittance t satisfies t≧πr² cos θ/{(1−cos θ)(S−πr²)}, supposing that an average radius is defined as r, a distance from the LED light source is defined as H, a light-emitting area of the LED light source is defined as S, and a total light quantity is defined as L.

An anti-reflection film that can provide high visibility and has an anti-reflection function by which reflection of incident light from external can be further reduced, and a display device having such an anti-reflection film. A plurality of contiguous pyramidal projections is arranged in a geometric pattern, so that reflection of incident light is prevented. In addition, a protective layer formed of a material having a lower refractive index than the pyramidal projections is provided so as to fill a space between the plurality of pyramidal projections. The plurality of pyramidal projections has a hexagonal shape and can be densely arranged with no space therebetween. Further, since six sides of each pyramidal projection are provided at a different angle from the base, light can be effectively scattered in many directions.

A linear light source device for image reading. The main body of the linear light source device includes at least a light-guide bar and a light source assembly. The light-guide bar is a polygonal column with one surface having stripes thereon, acting as a reflective plane with a reflective function. The opposite plane to the reflective plane is a light-exiting plane, and all the remaining planes are reflective layers. At least one of the ends of the polygonal column is an incident plane for a light beam to enter. Light is transmitted through both of the two ends of the polygonal column (or one end with the other end acting as a reflective plane) and uniformly transmits through the light-exiting plane. The light-guided bar has a simple structure and configuration, a compact volume, a high rate of utilization in light energy, is flexibly changed in length, and is easy to manufacture with high product yield and low manufacturing cost. In addition, it can provide uniform monochromatic and colored light, with high luminance, and at a low cost.

The present invention provides a coating composition capable of forming a fluorine-containing coating layer having a low refractive index and a high hardness, a coating layer formed by using the coating composition, an anti-reflecting layer using the coating layer and an anti-reflecting film and an image display device to which the anti-reflecting layer is applied. The coating composition according to the present invention comprises (A) a binder system containing a fluorine-containing component (a) having one or both of a functional group which can be cured by ionizing radiation and a polar group which can be heat-cured, and contains both an ionizing radiation-curable group and a heatcurable polar group as a whole and (B) an inorganic superfine particle of the order of submicron in size which can be dispersed in a colloidal state in a liquid medium for preparing a coating liquid. The coating layer formed using this coating composition is preferable for forming a light-transmitting layer, particularly, a low-refractive index layer 20, constituting a monolayer type or multilayer type anti-reflecting layer 17.

The disclosed subject matter includes a projector headlight using a plurality of optical units for a low beam with a high visible/visual quality. Each of the optical units can include a plurality of LED devices and a projector lens. The projector lens can include a light-emitting surface including a reflex function and a reflex surface including a light incoming surface that is located on the opposite side of the light-emitting surface. The LED devices can be located adjacent the light incoming surface, and the optical units can be located so that angles between optical axes of adjacent optical units can become substantially a same angle. Thus, the projector headlight can form various favorable light distribution patterns by changing curvature factors of the light-emitting surface and the reflex surface of the projector lens in each of the optical units and by changing the angles between the optical axes of the adjacent optical units.

It is an object to provide a high-visibility antireflection film having an antireflection function which can further reduce reflection and a display device that has the antireflection film. A plurality of projections in a pyramidal shape (hereinafter, referred to as pyramidal projection) that are adjacent to each other are provided, and the refractive index of the projection is made to change by the physical pyramidal shape to the outer side (air side) from a surface of a display screen, so that reflection of light is prevented. In addition, the plurality of pyramidal projections are each covered with a film formed of a material having a higher refractive index than the pyramidal projections.

A display front plane having an anti-reflection film in thickness uniformity and good adhesion between the anti-reflection film and the base material is supplied. Each of a display lenticular lens and a display fresnel lens having a sophisticated anti-reflection function with a high total light transmittance is also to be provided. As for the display front plane, lenticular lens, fresnel lens relating to the present invention, gas containing a gas for thin film formation is introduced into a discharge space under the atmospheric pressure or the pressure close to it and the gas is activated by applying a high frequency electric field in the discharge space mentioned above. And then, anti-reflection film at least on one side of the surface of the base material is formed by exposing the base material in the aforementioned activated gas.

Disclosed is a functional laminated sheet having flexibility, high body and good die cutting workability. The functional laminated sheet comprises a laminated sheet composed of at least two plastic films bound to each other through an adhesive layer and a functional layer formed on one surface or both surfaces of at least one of the plastic films, wherein the adhesive layer has a Martens hardness of 260 N/mm² or less. The functional layer is, for example, a layer having an electromagnetic wave shielding function, a heat ray reflection function, a gas barrier function or a planar heat generation function, and can be arranged in the inside of the laminated sheet. Alternatively, the functional layer is a layer having a light reflection function, a light permeation control function or an antifogging function, and can be arranged on the outermost surface of the laminated sheet. Also disclosed is a transparent electrically conductive laminated sheet for a touch panel, which comprises a transparent laminated sheet having a transparent plastic film bonded thereto through the adhesive layer and a transparent electrically conductive layer formed on the transparent laminated sheet.

To provide optical modules and optical transmission devices that are suitable for communication forms using multimode optical fibers, an optical module includes a surface-emitting type semiconductor laser that emits polarized light oscillating in a multimode which is preferentially oriented in two given polarization axes, and an optical member that demonstrates at least one function among a transmission function, a reflection function, a refraction function, and a diffraction function alternatively to a predetermined polarization. The optical member is disposed such that a principal plane thereof intersects with a traveling direction of emission light of the surface-emitting type semiconductor laser and a polarization axis of the polarization plane does not overlap with the polarization axes of the emission light of the surface-emitting type semiconductor laser.

The present invention provides such a formation method that an antireflection structure having excellent antireflection functions can be formed in a large area and at small cost. Further, the present invention also provides an antireflection structure formed by that method. In the formation method, a base layer and particles placed thereon are subjected to an etching process. The particles on the base layer serve as an etching mask in the process, and hence they are more durable against etching than the base layer. The etching rate ratio of the base layer to the particles is more than 1 but not more than 5. The etching process is stopped before the particles disappear. It is also possible to produce an antireflection structure by nanoimprinting method employing a stamper. The stamper is formed by use of a master plate produced according to the above formation method.

To provide a PDP and an FED with high visibility, having an anti-reflection function capable of reducing reflection of incident light from external. An anti-reflection layer including a plurality of pyramid-shaped projections, apexes of which are provided at equal intervals and in which each side of a base which forms a pyramid shape of one of the plurality of pyramid-shaped projections is in contact with a side of a base which forms a pyramid shape of an adjacent pyramid-shaped projection, is included. In other words, one pyramid-shaped projection is surrounded by other pyramid-shaped projections, and the base of the pyramid-shaped projection shares a side of a base with the base of the adjacent pyramid-shaped projection.

A liquid crystal display device is constructed such that a liquid crystal layer is sandwiched between an upper substrate, which is provided with upper transparent electrodes for forming pixels, and a lower substrate, which is provided with lower transparent electrodes disposed so as to intersect with the upper transparent electrodes. The liquid crystal panel includes a half reflection layer having a reflection function and a transmission function which is formed on the inner surface of the lower substrate as a lower layer of the lower transparent electrodes; an upper retardation film, an upper polarizing plate, and a light diffusing plate which are laminated on the upper substrate; and a lower retardation film and a lower polarizing plate, which are laminated on the surface of the lower substrate. Due to such a construction, the half reflection type liquid crystal display device is capable of providing an image display of high brightness and high contrast.

The invention discloses an electromagnetic shielding composite material. Electromagnetic wave absorption layers and electromagnetic wave reflection layers are alternately overlapped to form electromagnetic shielding function bodies; the electromagnetic wave absorption layers are formed by compositing matrix resin, fiber carriers and electromagnetic absorption function bodies; the electromagnetic wave absorption layers are formed by compositing matrix resin and electromagnetic gradient reflection function bodies; in the overlapped electromagnetic wave reflection layers, the mass percentage compositions of short cut carbon fibers increase in gradient along the incident directions of the electromagnetic waves. According to the electromagnetic shielding composite material of the invention, the incident electromagnetic waves generate multi-reflection; the propagation paths of the electromagnetic waves in the material are increased; increase of the multi-reflection loss and absorption loss enables the shielding efficiency of the material to be increased; in adoption of the reflection layers of gradient structure, the electromagnetic waves will not escape away from the shielding material rapidly for reflection; more electromagnetic waves can enter the next shielding unit; therefore, the shielding efficiency of the material is further improved.

The invention discloses a preparing method of high reflectance rate ethylene-vinyl-acetate copolymer composition, which is characterized by containing the following components by weight proportion: 100 parts of ethylene-vinyl-acetate copolymer, 0.5-2 parts of cross-linking agent, 0.05-1 part of antioxidant, 0.05-0.5 part of light stabilizer, 0.1-1.5 parts of tackifier, 0.01-3 parts of fluorescent whitening agent and 0.5-15 parts of additive with a high reflection function. The ethylene-vinyl-acetate copolymer and the other functional additives are performed with premixing, fusing extruding and tape casting or calendaring for film forming, and finally are wound up to manufacture a high reflection rate ethylene vinyl acetate copolymer (EVA) packaging glue film. The preparing method of high reflectance rate ethylene-vinyl-acetate copolymer composition does not add organic ultraviolet absorber, thereby reducing yellowing effect on the glue film caused by the ultraviolet absorber. In addition, the preparing method of high reflectance rate ethylene-vinyl-acetate copolymer composition improves yellowing resistance and ultraviolet radiation resistance of the glue film by adding fluorescent whitening agent and high reflection additive. Simultaneously, reused ratio of light rays is increased, and finally long period service life of a photovoltaic assembly can be prolonged and photoelectric conversion efficiency of the photovoltaic assembly can be improved.

The invention discloses a medium-and-low-temperature solar selective absorption thin film. The medium-and-low-temperature solar selective absorption thin film mainly comprises a diffusion blocking layer, an absorption layer and an anti-reflection layer, which are sequentially deposited on a substrate with an infrared reflection function, or the medium-and-low-temperature solar selective absorption thin film mainly comprises an infrared reflection layer, the diffusion blocking layer, the absorption layer and the anti-reflection layer, which are sequentially deposited on the substrate, wherein the infrared reflection layer comprises the components of copper (Cu), molybdenum (Mo) or silver (Ag); the diffusion blocking layer comprises the composite component of chromium and nitrogen; the absorption layer consists of one or two of chromium simple substance / chromium oxide multi-component phase and chromium simple substance / chromium oxynitride multi-component phase; and the anti-reflection layer is a silicon dioxide (SiO2) ceramic thin film. The medium-and-low-temperature solar selective absorption thin film is high in solar spectrum absorption rate, low in infrared emissivity, high in heat stability and high in weather resistance and can be used in medium-and-low-temperature atmospheric environment of below 278 DEG C for a long time. The invention also discloses a preparation method for the medium-and-low-temperature solar selective absorption thin film. The preparation method employs a magnetron sputtering method and is simple in process, low in cost, high in stability and applicable to industrial large-area preparation.

To provide a plasma display panel and a field emission display having an anti-reflection function which can further reduce reflection of incident light from an external source. By providing an anti-reflection layer which geometrically includes a plurality of adjacent hexagonal pyramid-shaped projections, reflection of light is prevented. The reflective index changes from a surface side of display screen to an out side (an atmosphere side) due to a physical shape of a hexagonal pyramid. The plurality of hexagonal pyramid-shaped projections can be provided densely without any space remaining, and six surfaces of side of the hexagonal pyramid-shaped projection are each provided at different angles to a base surface. Therefore, light ray can be effectively scattered in many directions.

A protective film for polarizing plate having a substrate film of a resin material and, laminated on at least one surface thereof directly or via another layer, an antireflection layer, characterized in that the substrate film has a photoelastic coefficient of less than 9×10⁻¹² Pa⁻¹ and a saturated water-absorbing percentage of less than 0.05%, and the resin material constituting the substrate film exhibits a warpage percentage of 1% or less when the film having an average thickness of 50 μm and a dimension of 100 mm×100 mm is allowed to stand at 60° C. and a humidity of 95% for 500 hours is below 1%; a method for preparing the protective film for polarizing plate; a polarizing plate with antireflection function comprising the protective film and a polarizing plate laminated thereon; and an optical article having the polarizing plate with antireflection function. The above protective film for polarizing plate has a structure which is less susceptible to warpage, deformation, and distortion even when allowed to stand in an atmosphere of high temperature and high humidity for a long period of time.

To provide a rendering program, a rendering apparatus, and a rendering method, which are capable of displaying a sterical model surface using a fabric in which the real feel of material is reproduced. A reflection property measurement device 10 receives reflected light of an actual yarn T2 and measures a reflection property representing the energy of the reflected light of the yarn T2. A correction portion 106 calculates a specular reflection coefficient K_s, a glossiness coefficient p, and first and second diffuse reflection coefficients K_d1, K_d2 by using parameter fitting so that the error between the reflection property of the actual yarn and the energy of the reflected light obtained from a reflection function becomes minimum. A rendering portion 107 renders the sterical model by using the reflection function in which the coefficients are calculated and a texture which is the model of a fabric subjected to a napping treatment.

The invention discloses a high-flame-resistance high-strength high-reflection polycarbonate material which is prepared from the following raw materials in percentage by mass: 10-75% of polycarbonate, 0.05-10% of a flame retardant, 0.1-0.8% of an anti-dropping agent, 25-75% of light-reflecting master batches, 1-10% of a toughening agent, 0.2-1% of an ultraviolet resistant agent, 0.2-1% of an antioxidant and 0.2-5% of a lubricant, wherein the light-reflecting master batches consist of a light reflecting agent, a coupling agent, polycarbonate and auxiliaries in a mass ratio being 40 to (7.5 to 17.5) to (37 to 57) to (0.1 to 5). The material has a good light shielding and reflecting function, high flame resistance, and good mechanical property. The invention further discloses a preparation method and application for the high-flame-resistance high-strength high-reflection polycarbonate material. The high-flame-resistance high-strength high-reflection polycarbonate material can be used for preparing a light reflecting piece, and is especially suitable for preparing an LED (light-emitting diode) lamp reflecting cover.

The invention discloses a compressive sensing radar reconstruction method. The method comprises: receiving a target reflection echo in an imaging area and performing non-uniform sampling on echo signals so as to obtain a non-uniform sampling sequence in a discrete form; establishing a compressive sensing radar model through the non-uniform sampling echo sequence; and solving the compressive sensing radar model and reconstructing a target reflection function, wherein the matrix vector multiplication in the procedures of solving the compressive sensing radar model is calculated by means of the non-uniform Fourier transform. By adopting such a method, the complexity of algorithmic reconstruction is effectively reduced and the reconstruction speed of sparse signals is enhanced.