The development of lighting

The emergence of anything must have its historical background, and the development of lighting is no exception. At the beginning, the lighting was only a product in the laboratory and was discovered inadvertently. This state of affairs continued until the 1980s. It wasn't until the 1990s that lighting really got out of the ivory tower and entered the public eye, but did not enter people's daily life. Lighting has actually spanned nearly a century from its birth to today. In 1907, the American scientist PC. White first applied for a patent for induction lighting, but White only applied for a patent for the principle of lighting, not a patent for lighting, not a patent for lighting technology, if it is a technology, you can imagine it, roar... …The use of lighting technology requires a patent fee. It was the Americans like Thompson and Tas who made high-frequency lighting. However, due to the limitation of the electronic technology level at that time, this kind of lamp can only exist in the laboratory, and has not entered the market. It seems that in the 1930s, Japan's Panasonic company first introduced Everbright lighting and put it into the Japanese market. At that time, the 27w Everbright lighting had a luminous efficiency of only 37lm/w and an average life span of 40,000 hours. But this is incredible. This is an explosion in the lighting industry. Later, Panasonic seemed to slowly abandon this business. Now look at the half-dead lighting market, Panasonic is the bull. In the same year, Philips' QL lighting was also put on the market. It is said that the luminous efficiency of the lighting at that time reached 70lm/w. In the early 1990s, there was a kind of genura lighting, which is a compact lighting with integrated ballast and lamp. Its structure is similar to Philips’ QL lighting, and its appearance is similar to incandescent lamps, but in fact it is incandescent. At first glance, it is said that the luminous efficiency is 50lm/w and the life span is 15000 hours. Then ENDURA lighting. The working frequency of ENDURA lighting is 300KHz, the luminous efficiency reaches 75lm/w, and the average life span is 60,000 hours. In nine years, Hebei Gems Group lit up the first lamp in the laboratory. Subsequently, it officially entered the field of high-frequency lighting production. At that time, the Lighting Factory Company was still a 'Jiuzhou Electric FactoryAround 2000, Shanghai Hongyuan Company invested in Ru0026D and production of low-frequency lighting, and named it LVD lamp. Since then, the development of lighting has blossomed in the domestic market.