Metal iodide formula used in metal iodide lamp

Abstract

The invention relates to a rare-earth metal halide prescription used in a metal halide lamp, in particular to a metal iodide prescription used in the metal halide lamp which is used on occasions withlarge illumination area, such as stadium, storehouse, factory, fishing operation occasion and the like requiring large power, high color rendition and high color temperature. An electric arc tube of alamp is filled with iodide with the components and weight percentages as follows: 50 percent to 55 percent of DyI3, 18 percent to 20 percent of NaI18, 8 percent to 10 percent of GdI3, 13 percent to 15 percent of CsI, 1 percent to 2 percent of TlI and 3 percent to 5 percent of InI. The iodide prescription of the metal halide lamp improves the color rendition index and the color temperature greatly; the high correlative color temperature CCT is more than or equal to 7000K; the high color rendition index Ra is more than or equal to 85; the high illumination efficiency eta is more than or equal to 70Lm / W; and the longer service life L is more than or equal to 4000H. The metal halide lamp has high lighting effect and pure white light, is more comfortable to people and is fit for illuminating on the occasion with high illumination quality requirements and larger area.

Description

Technical field [0001] The invention relates to a rare-earth metal halide formula for metal halide lamps, in particular to a metal iodide formula for metal halide lamps used in large-area lighting occasions such as stadiums, warehouses, factory buildings, fishery operations and the like. Background technique [0002] In many large-area lighting occasions, such as sports stadiums for TV broadcasting, and light trapping for fishing operations, white lights with high color rendering and high color temperature are required. For this lighting effect, in terms of current lighting technology, the best choice is the metal halide lamp. The arc tubes of these metal halide lamps are filled with inert gas and metal iodides such as sodium iodide, thorium iodide, etc., but most of these metal halide lamps have insufficient color rendering, Ra is only 60-70, and the color temperature index is not high. White light effect It's not very good either, and it still can't meet the needs of larg...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to overcome the problems of low color rendering of the above-mentioned metal halide lamp, the color of the light cannot meet the requirements, and cannot meet the needs of large-area lighting occasions, the present invention provides a high-power In metal halide lamps, metal iodide formula with high color temperature and high color index