Small lighting knowledge | do you know about the history of electric light source? - China lighting network

Let us from the following several aspects to retrospect the history of electric light source 1) Thermal radiation light source

in 1906 for the first time produce vacuum tungsten filament incandescent lamp, incandescent light bulbs, filled with argon and nitrogen mixture gas in 1913, in 1959 to create sufficient iodine tungsten halogen lamp. Halogen tungsten lamp to improve the life span of the incandescent lamp and the light source, life is 2000 - 3000 h; 20 - light efficiency 25 lm / W。 Tantalum carbide filament incandescent light bulbs, successfully applied in 1963, the light color temperature up to 3500 - 3600 k, luminous efficiency than halogen tungsten lamp. ( 2) Gas discharge light source of the 20th century, the inert gas filling gas discharge lamp. The earliest of the filling inside the lamp is neon, neon light, orange light; Argon filling, violet light; Carbon dioxide, hair is white, the gas discharge lamp of photosynthetic efficiency is 10 - 20lm/W。 In 1923, Compton and fei lit the first involved only low voltage sodium lamp, luminous efficiency is more than 200 lm/W, but it was not until 1932 years later, the low pressure sodium lamp truly to enter the market. 1936 produce fluorescent lamp, mercury vapour pressure is low due to tube, also called low pressure discharge. Fluorescent lamp first large-scale use is the New York world's fair in 1939, when the lamp lights about 40 lm/W. In 1973 produced using red, green and blue narrow spectrum of rare earth fluorescent phosphors, known as the 'trichromatic fluorescent lamps, light efficiency can be improved to more than 80 lm/W. Create a compact fluorescent lamps (1980 Single-ended fluorescent lamp) In 1991, produce the high frequency electrodeless fluorescent lamp. Kuhl and LeiXinSi kai at the end of 1906 for the first time discovered high-pressure mercury vapor discharge, but it was not until the 1930 s to produce the high pressure gas discharge lamp - - - - High pressure mercury lamp. In 1964, creating metal halide lamp. In 1966, high pressure sodium lamp appear on the market. Ritter discovered the ultraviolet ray in 1802, but until the 1930 s human beings created the first uv lamp. Really into practice after uv light source in the 1960 s. The lamp in the medical, industrial, fisheries, agriculture, textile and printing and other industries has been widely used.

in the 1930 s to produce the chemical flash light, the lamp is mainly used for photographic, after gradually replaced by electronic flash. 1960 maiman first design a ruby laser, a solid 1961 gormley first describes the helium neon laser gas. Laser ( Leser Lasser) Naming is the use of 'Light

Amplification by Stmukated Emission of

Raotiation' ( Stimulated radiation emission of light amplification) The first letter of the Mosaic. Laser is widely used in science, communications, industrial, medical and military and other fields. In 1910, French scientists Claude made the world's first commercial only strobe lights installed in Paris palace building decorative lighting to succeed. Produce type phosphor in the neon lights in the 1930 s, has greatly enrich the neon colors. After 70 s, the application of rare earth tricolor phosphor powder, has opened up a new stage for the history of neon lights. The neon lights into China in 1926. In 1927 China's first domestically produced neon signs installed in the middle of the Shanghai grand hotel. ( 3) Electroluminescent light source 1936 deiss theo found some phosphor on strong enough alternating electric field can shine. 1958 practical electroluminescent light source ( EL glow plates) 。 In 1962 to create practical light-emitting diodes ( 领导) , is red, light efficiency is only 0. 1 lm/W, create green light LED, 1968, 1994 out of the blue LED light, solved the problem of the three primary color deficiency. Create white leds in 1996, 1998 to the market. Solid light source has developed rapidly, from the initial monochromatic light, light efficiency 0. 1 lm/W development to full color, 40 lm - light efficiency 80 lm/W, from the initial application in the indicator and monitor the development in the field of application in general lighting, showing a good application prospect. YanZhiXiang

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