83results about How to "Improve color temperature" patented technology

A wavelength conversion member which can achieve high color purity and optimize color temperature according to environmental changes, a light source assembly including the wavelength conversion member, and a liquid crystal display (LCD) including the light source assembly. The light source assembly includes a light-emitting chip which generates light and a wavelength conversion member which includes wavelength conversion particles that convert the light into light having a predetermined wavelength, the predetermined wavelength being determined according to the size of the wavelength conversion particles.

A wavelength adjustable high-brightness fluorescent powder for white LED has a chemical formula: Y3-xAl5O12:xCe3+, where x=0.01-0.05. It is prepared from aluminium oxide, yttrium oxide, cerium oxide and flux through proportionally mixing, grinding, loading the mixture in calcining container, putting the container in furnace and the carbon rod outside the container, heating to 900 deg.C, holding the temp for 30 min, heating to 1550 deg.C, for calcining it and cooling. Its advantages are high light intensity and high dispersity in transparent gel.

The invention discloses a method for preparing mononuclear AgInS2 quantum dots, comprising the following steps of: (1) adding AgNO3, InCl3, oleic acid, dodecyl mercaptan and solvent octadecene in a reaction container, to obtain an Ag and In precursor mixed liquor; (2) adding sulfur powder into oleylamine, and heating until the sulfur powder is fully dissolved, to obtain an S precursor solution; (3) under protection of argon, heating the Ag and In precursor mixed liquor from room temperature to 50-80 DEG C, and maintaining for 10-60min, in order to discharging air; and then raising temperature to 100-120 DEG C, maintaining for 1-5min, and injecting the S solution, wherein a mol ratio of Ag to S is 1:2, and reaction time is 5-90min; (4) sampling, and dissolving a sample into hexane, to obtain a AgInS2 quantum dot solution; and (5) adding waterless ethanol into the AgInS2 quantum dot solution obtained in the step (4), and centrifugally separating to obtain the mononuclear AgInS2 quantum dots. The method of the invention further raises fluorescent quantum yield of the mononuclear AgInS2 quantum dots prepared by a thermal injection method, in order to reach practical application requirement.

The present invention is to provide a minimalistic LED recessed light, which includes a light cup having a bottom provided with an opening and a top provided with a light-permeable hole in communication with the opening, a light chip having a bottom surface provided with at least one LED, a heat sink having a bottom connected with the top of the light cup for positioning the light chip therebetween and allowing the LED to correspond in position to the light-permeable hole, and an elastic supporting plate fixed to a top of the heat sink and having sections respectively and symmetrically bent toward the light cup and formed with an outwardly curved engaging surface, wherein the distance between the curved engaging surfaces is greater than a diameter of a fitting hole cut in a ceiling, for effectively achieving the objects of heat dissipation and easy installation / removal of the recessed light.