1652results about How to "Improve luminosity" patented technology

An LED lamp includes bare LED chips, an axle, and a lampshade. The bare LED chips are mounted on surface of the axle. The axle extends across the lampshade. A heat pipe is installed inside the axle for transferring the heat generated by the LED chips to exterior of the lampshade and obtaining a better heat dissipation.

An improved light-emitting panel having a plurality of micro-components at least partially disposed in a socket and sandwiched between two substrates is disclosed. Each micro-component contains a gas or gas-mixture capable of ionization when a sufficiently large voltage is supplied across the micro-component via at least two electrodes.

A vehicle headlamp having a projector-type lamp unit that enhances a luminous intensity of a hot zone at the time of high beam irradiation is described. A first additional reflector is provided obliquely left-upward of an optical axis Ax, and a second additional reflector is provided obliquely right-downward of the optical axis Ax, between a reflector and a projection lens. An additional light distribution pattern is formed in a center area of a high beam distribution pattern by reflecting direct light, which has entered the first additional reflector from a light source, obliquely right-downward and then forward by the second additional reflector, at the time of high beam irradiation. A reflective surface of the first additional reflector is formed like an ellipsoid spherical surface having the second focus on the right side with respect to the optical axis A (the second reflector side). This makes the additional light distribution pattern into a pattern with a narrow vertical width, and enhances a luminosity of the hot zone without making a short distance area of a road surface at the front of the vehicle excessively luminous.

An image free from interfering structures may be generated by means of a fiber bundle of several optical fibers, when for the system of fiber bundle and sensor imaging parameters are provided, which describe the geometrical characteristics of the intensity course generated by each individual optical fiber on the sensor. In image reconstruction, for each individual optical fiber an amplitude value and/or luminosity information may be generated by fitting a function of the amplitude value and the imaging parameters of the respective optical fiber to an intensity picture of the sensor, so that an optimum amplitude and/or luminosity value may be generated considering the geometrical imaging characteristics for each individual optical fiber.

A semiconductor light emitting device (A) includes a resin package (5), a semiconductor light emitting element (4), a first lead (1A) and a second lead (1B). The resin package (5) has an upper surface and a bottom surface, and has translucency. The semiconductor light emitting element (4) is covered with the resin package (5) in a state where the semiconductor light emitting element faces the upper surface of the resin package (5). The first lead (1A) includes a bonding pad (11A) which supports the semiconductor light emitting element (4). The second lead (1B) is separated from the first lead (1A), and is electrically connected to the semiconductor light emitting element (4) via a wire (6). The leads (1A, 1B) have mounting terminals (13A, 13B) which are exposed from the bottom surface of the resin package (5). The mounting terminals (13A, 13B) are surrounded by the resin package (5) in an in-plane direction perpendicular to the thickness direction of the resin package.

Embodiments of the invention provide a light-emitting device and a preparation method thereof as well as a display device, relating to the field of display technologies and solving a problem of light-emitting color cast due to high-energy exciton transfer in the light-emitting device while reducing the energy consumption of the device. The light-emitting device comprises an anode and a cathode which are opposite, a hole transfer layer close to the anode, an electron transfer layer close to the cathode and a light-emitting function layer arranged between the hole transfer layer and the electron transfer layer, wherein the light-emitting function layer comprises at least two layers of quantum dot light-emitting layers capable of emitting different colors of light and a transparent insulating layer arranged between any two adjacent layers of quantum dot light-emitting layers. The method is used for preparing the light-emitting device and the display device comprising the light-emitting device.

A light guide is provided for illuminating innumerable constructions, but which is ideally suited for illuminating the keys of a keyboard. The light guide includes a translucent planar plate having a top, a bottom and sides. Further, the light guide includes one or more cavities which project upwardly into the translucent plate from its bottom surface. The cavities are hollow or filled with a translucent material so that the translucent plate and the one or more cavities form translucent interfaces where the cavities interface with the plate. The light guide also includes a reflector which covers the plate bottom and cavity openings. Light produced by a light source, preferably in the form of one or more LEDs, is transmitted to and through the translucent plate until striking the plate-cavity interfaces where the light is refracted into the cavities' interior or reflected upwardly to the plate's upper surface. After initial refraction into a cavity, the light reflects off the reflector and travels again into the translucent plate until transmitted from the plate's upper surface. Preferably, light guide is positioned within a keyboard housing with the cavities underlying the keys so that light is transmitted from the translucent sheet to the keys.

A light emitting diode package includes a silicon substrate having a first surface and a second surface opposite to the first surface, wherein the first surface includes a cavity, a light emitting diode chip fixed on a bottom of the cavity, and a glass lens secured to the silicon substrate and covering the light emitting diode chip.

The invention relates to a frame-retardant and fire-resistant optical cable which comprises a cable core and is characterized in that an inner water-resistant layer and an inner fire-resistant layer are coated on the cable core, and an outer fire-resistant layer is arranged outside the inner fire-resistant layer. A steel-plastic composite belt armor layer and a low-smoke zero-halogen outer protection sleeve are respectively coated the outermost layer of a cable. The frame-retardant and fire-resistant optical cable has high frame-retardant and fire-resistant performance, maintenance of good light transmission performance of the optical cable in high-temperature burning and cooling periods is ensured, and the high-grade frame-retardant, fire-resistant and low-smoke zero-halogen protection sleeve enables the optical cable to be high in oxygen index, good in flame retardant efficiency, low in fuming, high in light transmittance, and strong in nucleating after being burnt. Combustion residues are a hard outline layer, a ceramic vulcanization silicon rubber fire-resistant layer is capable of resisting fire within the temperature of 1200 DEG C and 1500 DEG C. A steel belt enables the optical cable to maintain quite high intensity and rigidity. The two points effectively reduce affection of internal stress of different components after the optical cable is burnt, light transmittance of the optical cable is further ensured, the burning from outside to inside of the optical cable is blocked and retarded, and frame-retardant and fire-resistant performance of the optical cable is further enhanced.

The invention discloses a probe compound for identifying fluorine ions by combining spectral detection and bare eyes. The compound is a new compound formed by using excited state proton transfer compounds as a matrix and by silylation. The compound can be used for detecting fluorine ions, in particularly detecting fluorine ions in a water environment. Infiltrated test paper prepared by the compound is quick and convenient, the detection limit is low, and according to different excited wavelengths, two modes, namely an intensity identification mode and a chromaticity identification mode, can be selected respectively for better detection by an instrument and bare eyes.

A transflective liquid crystal device is provided that has red, green and blue colored layers provided in correspondence with a plurality of dot portions, and reflective layers overlapping the colored layers in plan view. In the plurality of dot portions, transparent bank layers and colored layers arranged to fill regions defined by the bank layers are respectively provided, and the forming areas of the bank layers in the respective dot portions are different from each other such that the forming areas of the colored layers in the respective dot portion are different for each color.

An illuminating device for backlighting flat displays, in particular displays for mobile applications, is provided. The illuminating device includes a light source and a light guiding member into which light emitted from the light source is coupled in and is coupled out therefrom at an exit surface. The exit surface has a surface structure including diffractive surface elements for light propagation, wherein all surface elements have a surface structure with a constant amplitude.

The invention discloses a metal nano particle-doped rare earth lanthanum aluminate light-emitting material, which belongs to the field of preparation of rare earth lanthanum aluminate light-emitting materials. The material has the chemical general formula of La1-x AlO3:Lnx@My, wherein @ is a cladding, and M is a metal nano particle and is selected from at least one of Ag, Au, Pt, Pd and Cu; and Ln is rare earth metal and is selected from one of Tm, Sm and Tb or a mixture of Sm and Tb, x is more than zero and smaller than or equal to 0.2, and y is a molar ratio of M and Al and is more than zero and smaller than or equal to 1*10<-2>. The invention also discloses a preparation method of the meal nano particle-doped rare earth lanthanum aluminate light-emitting material. The rare earth lanthanum aluminate light-emitting material prepared by doping the metal nano particle has the advantages of high stability and better light-emitting performance. The preparation method of the invention has simple process, low equipment requirement, no pollution and easy control and is suitable for industrialized production.

A projection system including a safety detection system for a protected space, said projection system including a projection light source, a projection imaging system, a projection lens system, a detection source comprising at least of a detection light source and a detection camera comprising at least of a detection sensor, characterized by the fact that the optical axis of the projection source is identical to the optical axis of the detection source and the detection camera at least in the protected space.

A UV exposure dosimetry system includes at least one UV sensor that accurately measures the UV irradiance intensity. The UV dosimetry system integrates the measured UV irradiance intensity over time to calculate the real-time UV dosage and the vitamin D production by taking into account factors comprising UV sensor location, body surface area, clothing coverage, and sunscreen usage. Based on the measurement, the system can predict the time remaining to skin burn and the time remaining to reach daily goal of vitamin D production. The system also calculates the UV index in real-time, and can crowd source the measured data in a network. The UV dosimetry system supports multi-user control through an advanced and user friendly input and output interface.

An organometallic iridium complex has high emission efficiency and a long lifetime. The iridium complex includes the structure represented by Formula (G1). In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms. R¹ to R⁶ independently represent any one of hydrogen and a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, and one of R² and R⁶ represents the alkyl group. X represents a carbon atom or a nitrogen atom, and when X represents a carbon atom, hydrogen or an alkyl group having 1 to 6 carbon atoms is bonded to the carbon atom. A dihedral angle between a ring bonded to R¹ and a phenyl group bonded to R² to R⁶ is 30° or more and 90° or less. An interior angle of the pyridine/pyrimidine ring facing R¹ is within a range of 118° to 122°.