805 results about "Light reflectance" patented technology

To provide a directional screen which can efficiently converge light from a projector on an observer and which is hardly affected by external light. That is, multiple transparent protrusion structures are formed on a base material, and a light absorbing layer communicating in the vertical direction of each of the protrusion structures is provided. The formation of a recess structure or a through-hole exerts an effect similar to that of a protrusion structure. Alternatively, fibrous protrusions each having a high light reflectance are used as the protrusion structures, and are densely formed on the base material while they -are slanted in the direction of external light.

A laminated glass unit having at least two sheets of glass separated and bonded by a polymeric interlayer material, and further having multi-layer thin film coatings on each of the unbonded surfaces of the at least two glass sheets, is disclosed. Two or more of such laminated glass units can be utilized in various configurations to form an insulated glass unit. The thin films deposited on the unbonded glass surfaces have anti-reflective, iridescence-suppressing and solar control properties when suitable configurations, materials and layer thicknesses are chosen. The laminated glass unit and insulated glass units of the invention exhibit an excellent combination of low visible light reflectance and thermal insulating properties.

This invention provides a heat curable resin composition for light reflection, which, after curing, can realize high reflectance in a range of visible light to near ultraviolet light, has excellent heat deterioration resistance and tablet moldability, and is less likely to cause burrs during transfer molding, and a process for producing the resin composition, and an optical semiconductor element mounting substrate and an optical semiconductor device using the resin composition. The heat curable resin composition for light reflection comprises a heat curable component and a white pigment and is characterized in that the length of burrs caused upon transfer molding under conditions of molding temperature 100° C. to 200° C., molding pressure not more than 20 MPa, and molding time 60 to 120 sec is not more than 5 mm and the light reflectance after heat curing at a wavelength of 350 nm to 800 nm is not less than 80%. The resin composition can be used for constructing the optical semiconductor element mounting substrate and the optical semiconductor device.

An encapsulant material with enhanced light reflectivity, a crystalline silicon photovoltaic module and a thin film photovoltaic module are provided. The encapsulant material has a porous structure therein, and an average pore diameter of the porous structure is between several hundreds of nanometers and several hundreds of micrometers, so that the light reflectance of the encapsulant material is improved. Moreover, the encapsulant material is crosslinked by a physical or chemical crosslinking method, so heat resistance thereof is improved. Therefore, the encapsulant material is suitable for the crystalline silicon photovoltaic module and the thin film photovoltaic module, so as to increase power conversion efficiency of these modules.

A touch screen improved with reflection rate of light, wherein a retardation film at a touch panel is laminated with special ink in multiple layers to pass through an anti-reflection treatment for reduction of reflection rate of light glaring on eyes caused by diffused reflection of light and for improvement of permeability rate of light coming from an LCD mounted thereunder, thereby optimizing a brightness of the touch screen.

An endoscope includes a first lens barrel having a brazing surface in at least a brazing portion thereof, and supporting an optical window member brazed thereon, and a second lens barrel arranged to be proximal with respect to the optical window member and supporting optical members on the inner circumference thereof. At least a distal end surface of one of the second lens barrel, a diaphragm member, a spacer ring, and the optical members has light reflectance lower than that of the brazing surface of the first lens barrel. At least the inner circumference of the second lens barrel has a light reflectance lower than that of the brazing surface of the first lens barrel or has a reflection surface more irregular than the brazing surface of the first lens barrel.

A lighting device 12 includes at least one point light source 17, an optical member 15a provided on a light output side of the lighting device 12 from the point light source 17. The optical member 15a is formed of a member having a substantially uniform light reflectance. A first light reflecting portion 31 is formed on a portion of the optical member 15a that overlaps the point light source 17, and the first light reflecting portion 31 reflects light from the point light source 17. A second light reflecting portion 30a, 23 is provided to reflect the light that is reflected by the first light reflecting portion 31 to be directed to the first light reflecting portion 31.

[Purpose] To provide a surface illumination fixture using a point light source having strong directivity.[Constitution] In the surface illumination fixture 3 including a surface illumination light-source device 6 converting light from a plurality of point light sources 36 having strong directivity into surface illumination and an illumination fixture main body 41, the surface illumination light-source device 6 includes a casing 30 having a flat plate part 35 being used to attach the surface illumination light-source device to the illumination fixture main body, lateral plate parts standing from the flat plate part, and an opening on a surface opposite to the flat plate part, and includes a light-guide reflection plate covering the opening. The flat plate part 35, the lateral plate parts 32 and 33, and the light-guide reflection plate 40 are formed by members having a high light reflectance and a low light transmittance. The light-guide reflection plate 40 is formed to have a lower light reflectance and a higher light transmittance as the distance from the corresponding point light source increases. The illumination fixture main body 41 having attaching means for attachment to a ceiling or a wall.

A method for remotely detecting whether a subject is alive, comprising the steps of determining a calibration spectral signature for light reflectance from living skin, normalizing the calibration spectral signature values to the calibration reflectance value at a reference wavelength, storing the normalized calibration spectral signature, determining a subject spectral signature of the light reflectance of a region of skin of the subject whose liveness is to be determined, normalizing the subject spectral signature values to the subject reflectance value at the reference wavelength, comparing the normalized subject spectral signature with the normalized calibration spectral signature for at least one wavelength, generating a subject liveness signal based on the comparison of the normalized subject spectral signature with the normalized calibration spectral signature, and emitting the subject liveness signal.

A jewelry arrangement with plural gemstones exhibiting variegated light reflectance with a body portion, a plurality of through-holes in the body portion, and a plurality of gemstones retained relative to first and second openings of each through-hole. A light chamber is defined by each through-hole and the gemstones whereby light can reach the portions of the gemstones retained adjacent to the first openings only after passing through the gemstone retained relative to the second opening of that through-hole and vice versa. The gemstones retained relative to the first openings can be substantially clear, and the gemstones retained relative to the second openings can be colored. The jewelry arrangement can comprise a ring, an earring, or any other structure. Where the jewelry arrangement is a ring, clear stones, such as diamonds, can be retained along an outer surface of the shank and colored stones, such as rubies, can be disposed along an inner surface of the shank.

A write-once information recording disk has a transparent substrate having concentric or spiral grooves formed therein, and a recording film formed on the grooves on the transparent substrate, wherein the recording groove has an anion portion and a pigment portion, being formed of one organic pigment of which maximum absorption wavelength region from the wavelength of short wavelength laser light to be emitted to the recording film is present at the longer wavelength side, a recording mark is formed on the recording film by irradiation with short wavelength laser light, and the recording mark has a higher light reflectivity than the light reflectivity of the recording film before irradiation with the short wavelength laser light. Therefore, the write-once type optical disk has a so-called low-to-high characteristic, that is, the reflectivity is higher after recording than before recording.

To achieve an excellent solar radiation shielding properties and a visible light reflectance of at least 70%, the interlayer portion of the laminated glass of the present invention includes a heat reflecting film and a film having a heat shielding function that is provided between the heat reflecting film and the second glass sheet. The heat reflecting film may be an optical interference multilayer film obtained by laminating layers of two types of polymer thin films having different refractive indices. The film having the heat shielding function can contain fine particles of at least one selected from hexaboride and ITO. The laminated glass can be bent to have a convex surface and a concave surface. In this laminated glass, the convex surface is formed by the first glass sheet and the concave surface is formed by the second glass sheet.

An organic EL device includes: a base body; pixels that are arranged in the base body and emit light beams having either of at least two different colors from among red, green and blue; an reflection layer that has optical reflectivity and arranged on the base body; an anti-reflection layer that is arranged on the reflection layer and has optical reflectivity lower than that of the reflection layer; an insulation layer that is arranged on the anti-reflection layer and has optical transmittance; a first electrode that is arranged in each pixel on the insulation layer and has optical transmittance; an organic functional layer that is arranged on the first electrode and includes at least a luminescent layer; a second electrode that is arranged on the organic functional layer and has optical reflectivity and optical transmittance; and an optical resonator that is formed between the reflection layer and the second electrode to resonate the light from the organic functional layer, wherein the optical resonator has a resonance wavelength corresponding to the color of the light emitted from the pixels in a first area out of an area of the pixels, and the anti-reflection layer is provided in an area except for the first area out of the area of the pixels.

A test and method is provided for the analysis of one or more analytes in a fluid test sample. The test includes a carrier of an absorbent material, which exhibits light reflectance within a first spectral range. A plurality of test fields are located on the surface of the carrier, and include test field materials reactive with the analytes and exhibiting light reflectance within a second spectral range. The test fields are located in spaced relation to one another on the carrier, so that gaps between the test fields exhibit light reflectances within the first spectral range. The gaps and test fields have relative sizes which are optically discernable, and which form a coded sequence that correlates to information relating to the test.

A display apparatus includes an active transflective device and a device panel. The active transflective device is configured to electrically control light transmissivity and light reflectivity. The display panel is configured to form an image by modulating at least one of light reflected and light transmitted by the active transflective device.

The invention provides an active-passive collaborative inversion method of forest coverage and effective leaf area index, the method comprising steps: 1) based on the forest parameters in the sample area obtained according to the airborne laser radar, obtained by the Li-Strahler geometrical optics model The percentage of illuminated surface area Kg of each mixed pixel; 2) According to the Kg value of each mixed pixel and the real reflectance of the pixel obtained from the optical remote sensing image, the linear spectral decomposition model is used to obtain the Li-Strahler geometric optics model The reflectance G of the illuminated surface and the average reflectance X0 of other components; 3) The two reflectances G and reflectance X0 obtained in 2) are used to obtain each real pixel on the entire image through the simplified model of Li-Strahler geometric optics The percentage of illuminated surface area Kg', and then get the canopy cover m and effective plant area index PAIe of each pixel. The invention utilizes the combination of the laser radar and the optical remote sensing data to reduce the influence of the mixed pixel and improve the accuracy of the optical remote sensing data inversion of the forest parameters.

The present invention provides a foamed sheet for a reflector which can be transformed to a reflector having a desired shape by thermoforming.A foamed sheet A for a reflector of the present invention is characterized by being a foamed sheet for a reflector including a polypropylene-based resin foamed sheet 1 which has an average cell diameter of from 50 to 650 μm and at least one surface which is an uneven surface 12 formed by cells 11 located in the vicinity of the surface, and a polypropylene-based resin non-foamed sheet 3 integrally laminated on the polypropylene-based resin foamed sheet 1 in conformity with the uneven surface 12 and having an uneven surface 31, wherein the foamed sheet A for a reflector contains an inorganic filler in an amount of from 50 to 200 g / m2, the whole or part of the inorganic filler is contained in the polypropylene-based resin foamed sheet 1, a refractive index of an inorganic filler 2 differs by 1.0 or more from a refractive index of the polypropylene-based resin, and the foamed sheet A for a reflector has an overall thickness of from 0.2 to 2.0 mm and a light reflectance of 97% or more.

A display device is provided in which reduction of reflected light is realized. Also a multilayer substrate is provided in which light reflectance is reduced even when the substrate has a plurality of layers that differ in refractive index from each other. In the display device of one embodiment, the reflectance of light reflected by the internal structure, of light incident on the internal structure through a display screen, is less than 1.0%. The multilayer substrate of one embodiment includes a first layer and a second layer disposed adjacently to the first layer. The refractive index of the second layer varies continuously from an interface where the second layer is adjacent to the first layer in a direction from the first layer, with the variation being started at a value of the refractive index at the interface where the first layer is adjacent to the second layer.

Brightness factors associated with shade fabric may be utilized when shading a building. A brightness factor may incorporate an openness factor, a visible light reflectance, a diffusion factor, a color, or other characteristics of the shade fabric. The brightness factor may be utilized when selecting a particular shade fabric for a room, building or other location. Additionally, the brightness factor may be utilized by an automated shade control system. The shade fabric selection may affect the building envelope by facilitating the optimization of daylighting, reduction of artificial electric lighting needs, minimization of glare conditions, and reduction of thermal load.

The light reflection sheet (I) of the present invention comprises a sheet having a thickness of 0.4 to 2 mm and comprising a polycarbonate resin composition containing (B) titanium oxide, and the sheet has a light reflectance of 98% or more and a light transmittance of less than 1%. It is excellent in a flame retardancy and a reflection characteristic. Also, the light reflection sheet (II) of the present invention is prepared by providing a light-fast layer which cuts or absorbs a UV ray in a thickness of 0.5 to 20 μm on at least one face of a base sheet having a thickness of 0.4 to 2 mm and comprising a PC resin composition containing a combination of 85 to 60 mass % of (A) a PC base polymer and 15 to 40 mass % of (B) titanium oxide. It is less yellowed and less reduced in a reflection characteristic even after used for a long period of time. Further, the light reflection sheet (III) of the present invention is prepared by providing a light diffusion layer which diffuses and reflects light in a thickness of 0.5 to 20 μm on at least one face of the same base sheet as in the light reflection sheet (II). It is improved in a light diffusing and reflecting property and can form a liquid crystal image plane having less luminance unevenness when it is used as a direct under type liquid crystal back light.

To provide a backlight device with which a color hue and a color purity of a display panel can be improved while suppressing the lowering of the brightness of the display panel. A backlight device (20) comprises a pseudo white LED (21), a light guide plate (22), and a dichroic filter (25) which reflects a light with a predetermined wavelength among the light emitted from the pseudo white LED at a predetermined ratio. The dichroic filter is configured so that the light reflectance changes when the incident angle of the light is changed and a tilt angle to a light emitting surface (21e) of the pseudo white LED can be adjusted.

A write-once optical disk comprises a transparent resin substrate having a concentrically or spirally shaped groove and a land formed thereon, and a recording film formed on the groove and the land of the transparent resin substrate, a recording mark being formed by emission of a short-wavelength laser light beam. In addition, a light reflectivity of the recording mark portion formed by emission of the short wave laser light beam is higher than a light reflectivity obtained before emission of the short wavelength laser light beam, and a depth of the groove is in the range of 50 to 80 nm.

an anisotropic conductive adhesive which uses conductive particles where a silver-based metal is used as a conductive layer, having high light reflectance and excellent migration resistance is provided. The anisotropic conductive adhesive includes light reflective conductive particles in an insulating adhesive resin. The light reflective conductive particle includes a light reflective metal layer made of a metal alloy including silver, gold and hafnium formed on the surface of a resin particle as a core by sputtering method. The light reflective metal layer is preferably formed having a composition ratio of a silver of at least 50% by weight to at most 80% by weight: a gold of at least 10% by weight to at most 45%: a hafnium of at least 10% by weight to at most 40% by weight, and a total ratio does not exceed 100% by weight.

A stone cut and method for cutting a stone that increase the number of facets on the stone as well as the scintillation, brilliance, and light reflectivity of the stone. The cut and method includes cutting angles and increased number of facets that, either separately or together, manage the external and internal light flow dynamics of a round cut diamond to a higher level of efficiency, effectiveness, and performance. In accordance with another aspect of the invention, different cutting angles and proportions generate greater brilliance, dispersion, scintillation, and light reflectivity of the stone.

A write-once information recording medium comprises a transparent resin substrate having a concentrically or spirally shaped groove and a land formed thereon, and a recording firm formed on the groove and the land of the transparent resin substrate, a recording mark being formed on the medium by emission of a short wavelength laser light, the recording medium having an L to H feature in which a light reflectivity of the recording mark portion formed by the emission of the short wavelength laser light is higher than a light reflectivity obtained before the emission of the short wavelength laser light.

Disclosed is an illumination device that is capable of suppressing uneven brightness. The illumination device is equipped with LEDs (17), a chassis (14) that houses the LEDs (17), and a light-reflecting sheet (22) for the chassis that is disposed on the inner surface of the chassis (14) and is capable of reflecting the light from the LEDs (17); and is characterized in that the light-reflecting sheet (22) for the chassis has a sheet bottom section (31) extending along the surface of a base plate (14a) and a sheet oblique section (32) extending from the edge of the sheet bottom section (31), in that the sheet oblique section (32) slants in relation to the sheet bottom section (31) toward the light emission side of a backlight device (12), and in that the optical reflectivity of a boundary section (F2), which is the region along the border line (L) between the sheet bottom section (31) and the sheet oblique section (32) and includes said border line (L), on the surface of the LED (17) side of the light-reflecting sheet (22) for the chassis is set higher than the optical reflectivity of separate-side neighboring sections (F1, F3) that neighbor on sides of the boundary section (F2) separated from the border line (L).