Luminous pill for ceramic metal halogen lamp

A technology of ceramic metal halide lamps and luminescent pills, which is applied in the field of light sources, can solve problems such as short service life, low luminous efficiency, and large color drift, and achieve long service life, high luminous efficiency, and good color rendering.

Active Publication Date: 2012-10-17
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ceramic metal halide lamp prepared by filling these two kinds of luminescent pills has four fatal problems: low luminous efficiency, poor color rendering, short service life, and large color drift.
Therefore, these two kinds of luminescent pills are basically not suitable for ceramic metal halide lamps

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A luminescent pellet for use in ceramic metal halide lamps, consisting of iodides of dysprosium, holmium, thulium, sodium, thallium, and thorium. The weight ratio of dysprosium iodide, holmium iodide, thulium iodide, sodium iodide, thallium iodide and thorium iodide in the iodide forming the luminescent pill is: 16:20:15:21:20:4. The above-mentioned high-purity metal halides are mixed in a determined ratio and placed in a specific quartz container for pre-vacuum treatment (heating to 100-150°C), and then slowly heated until the mixture melts. Under high temperature conditions, rare earth halides, thorium iodide and sodium iodide form complexes with lower melting points. After stirring for a period of time, the metal halide-complex eutectic with uniform chemical composition is ejected from the nozzle, and the molten beads are rapidly cooled and solidified into balls during the mass transfer process with high-purity inert gas and collected in the product bottle . After ...

Embodiment 2

[0028] The preparation method is the same as in Example 1.

[0029] A luminescent pellet for use in ceramic metal halide lamps, consisting of iodides of dysprosium, holmium, thulium, sodium, thallium, and thorium. The weight ratio of dysprosium iodide, holmium iodide, thulium iodide, sodium iodide, thallium iodide and thorium iodide in the iodide forming the luminescent pill is: 19:16:19:28:19:4. The luminescent pill has a diameter of 0.6 mm and a grain weight of 0.7 mg. The luminous efficiency of the ceramic metal halide lamp produced by the pill is 100lm / w, the color rendering index is 93, the correlated color temperature is 4200K, the service life is 10000h, and the color drift is ±190k.

Embodiment 3

[0031] The preparation method is the same as in Example 1.

[0032] A luminescent pellet for use in ceramic metal halide lamps, consisting of iodides of dysprosium, holmium, thulium, sodium, thallium, and thorium. The weight ratio of dysprosium iodide, holmium iodide, thulium iodide, sodium iodide, thallium iodide and thorium iodide in the iodide forming the luminescent pill is: 20:18:20:27:13:4. The luminescent pill has a diameter of 0.8 mm and a grain weight of 1.1 mg. The luminous efficiency of the ceramic metal halide lamp produced by the pill is 100lm / w, the color rendering index is 93, the correlated color temperature is 4200K, the service life is 10000h, and the color drift is ±200k.

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Abstract

The invention belongs to the photoelectric source field, in particular relating to a luminous pill for a ceramic metal halogen lamp. The luminous pill is composed of iodides of dysprosium, holmium, thulium, sodium, thallium and thorium. In the iodides forming the luminous pill, the weight ratio of dysprosium iodide to holmium iodide to thulium iodide to sodium iodide to thallium iodide to thoriumiodide is 16-20: 16-20: 15-20: 21-28: 13-20: 4. The diameter of the luminous pill is 0.5-0.8mm and grain weight thereof is 0.5-1.1mg. The metal halogen lamp manufactured by the luminous pill providedby the invention has excellent photoelectric color synthesized parameters; and luminous efficiency of the metal halogen lamp reaches 100lm / w and service life thereof is greatly prolonged, thereby being a real metal halogen lamp with green power and energy conservation.

Description

technical field [0001] The invention belongs to the field of photoelectric power sources, and in particular relates to a luminescent pill for ceramic metal halide lamps. Background technique [0002] Metal halide lamps are divided into two types: quartz metal halide lamps and ceramic metal halide lamps. Among them, the basic structure of the ceramic metal halide lamp is to use polycrystalline alumina ceramics as the arc tube shell, and the shell is mostly a hollow cylindrical structure with a thick middle and thin ends, and the metal halide luminescent pills are filled in the middle of the arc tube. , insert electrodes into a cylindrical empty tube with thin ends. The arc tube shell made of polycrystalline alumina is a translucent material, which can withstand high temperatures above 400°C higher than quartz, and the normal operating temperature of the arc tube can reach 1200°C, and its thermal conductivity is relatively high High, the temperature distribution of the arc t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J61/18
Inventor 贾铁军张海波金继增李汉军李大明
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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