![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Classification
The metal halide is charged into the arc tube, and the illuminating electric light source is excited by the metal atom. It has the characteristics of high luminous efficiency, high color temperature and good color rendering. In 1911, Steinmetz discovered that when various metal iodides were added to a mercury discharge lamp, the spectrum of these metals was produced in the discharge arc. However, the discharge tube temperature at that time was limited by the softening point of the glass, and its spectral intensity was weak. In 1953, a microwave-excited quartz illuminating lamp using cesium iodide and no electrode required for discharge was produced, which produced a bright white erbium emission line. In the late 1950s, in order to improve the color of high-pressure mercury lamps, tests were carried out in which mercury tubes were filled with various metals and metal halides. First in 1961
A metal halide lamp metal halide lamp is available. The luminescent material in the lamp is no longer mercury, but a metal halide (sodium, bismuth, indium iodide). Metal halide lamps have been further studied and developed. There are many classification methods for metal halide lamps, which can be divided into four categories according to the filler: 1 sodium strontium indium. It has a linear spectrum with three peaks in the yellow, green and blue regions. 2 é’ª sodium. It has an approximately continuous spectrum over the entire visible range. 3 é•é’¬ class. There are multiple lines of extremely narrow spacing throughout the visible spectrum, approximating a continuous spectrum. 4 tin halides. Has a continuous molecular spectrum. There is also a lamp filled with a single metal halide that emits a spectrum of a specific wavelength, such as a xenon lamp having a 535 nm wavelength spectrum, green.
According to the structure of the lamp, it can be divided into three categories: 1 quartz arc tube is equipped with two main electrodes and one starting electrode, and a hard glass bulb (having a straight tube shape and an ellipsoidal shape) is arranged on the outside. These lamps are mainly used for general lighting in stadiums, roads, factories, etc. 2 Straight tubular arc tube is equipped with a pair of electrodes, without external glass bulb, which can replace straight tubular tungsten halogen lamps and is used for floodlighting in stadiums and other areas. 3 Short-arc spherical tungsten halogen lamps without outer bulbs, single-ended or double-ended ellipsoidal tungsten halogen lamps. Mainly used for film screening and filming and television lighting.
A tungsten halogen lamp with a hard glass outer bulb (also available as a quartz outer bulb) with a luminous efficiency of about 75 to 120 lm/W and a life span of several thousand hours to 20,000 hours; the light of a straight tubular arc tube tungsten halogen lamp The efficiency is about 90 lm/W and the life is 1000-2000 hours. The short-arc spherical tungsten halogen lamp has a luminous efficiency of 90-120 lm/W and a lifetime of several hundred hours. Metal halides have a maximum power of 10 kW and a minimum of 25 W for home lighting.
Vinyl Flooring,Plastic Flooring,Wood Design Vinyl Plank Flooring
Laminate flooring Co., Ltd. , http://www.nslaminate.com