5 minutes to understand the basic knowledge of the LED industry, how much do you know?
I have been engaged in the LED industry for so many years, how much industry knowledge do you know? Do you know what manufacturers of LED chips are? What are color temperature and brightness? What are the basic performances of LED light source? What are the floodlights and floodlights? What should you pay attention to in outdoor installation? Are you clear? Is it okay, below? Xiaobian makes some detailed introductions to these LED basics, and sees and learns.
1. Taiwan LED chip maker
Epistar (Epistar) referred to as: ES, (Lianquan, Yuankun, Lianyong, Guolian), Guangga Optoelectronics (Huga), New Century (Genesis Photonics), Arachi Optoel ectronics: AOC, Taigu Photoelectric (Tekcore), Kellett, Fuxin, Guanghong, Jingfa, Shichuang, Zhoulei, Liansheng (HPO), Hanguang (HL), Guanglei (ED), Dingyuan (Tyntek) referred to: TK, 曜Fuzhou Technology TC, Formosa Epitaxy, Guotong, Lianding, New Optoelectronics (VPEC), etc.
Ledtech Electronics, Unity Opto Technology, Para Light Electronics, Everlight Electronics, Bright LED Electronics, Kingbright, Lingsen Precision Industries ), Ligitek lectronics, Lite-OnTechnology, HARVATEK, etc.
2.Continental LED chip manufacturers
Sanan Optoelectronics abbreviation (S), Shanghai Blu-ray (Epilight) abbreviation (E), Silan Mingxin (SL), Dalian Lumei abbreviation (LM), Diyuan Optoelectronics, Huacan Optoelectronics, Nanchang Xinlei, Shanghai Jinqiao Dachen , Hebei Lide, Hebei Huineng, Shenzhen Orende, Shenzhen Century Jingyuan, Guangzhou Puguang, Yangzhou Huaxia Integration, Gansu Xintiandian Company, Dongguan Fudi Electronic Materials, Qingxin Optoelectronics, Jingneng Optoelectronics, Medium-light Optoelectronics, Dry Photoelectric, Jingda Optoelectronics, Shenzhen Fangda, Shandong Huaguang, Shanghai Lanbao and so on.
3. Color temperature and brightness
Color temperature ( Co1or Temperature )
Unit: absolute temperature (Kelvin, K)
The color temperature is expressed by the absolute temperature K, which is a standard black body (such as platinum). When the temperature rises to a certain degree, the color begins to be red, orange, yellow, green, blue, sputum (blue-violet), purple, and gradually. Change, using the characteristics of this light color change, when the light color of the light source is the same as the light color of the black body, we refer to the temperature of the black body at that time as the color temperature of the light source. When the color temperature is around 3000K, the light color is yellowish. When the color temperature is above 5000K, the light color is blue. Light of different color temperatures with different illumination and visual effects. Different color temperatures correspond to different colors of light as shown below. Different wavelengths give the human eye different color perceptions, from red, orange, yellow, green, blue, enamel (blue-violet), and purple. The sensitivity of the eye varies strongly with wavelength.
For example, under good lighting conditions, the eye is 20 times more sensitive to light at 550 nm (yellow) than red or blue. This is also an important reason why fog lights and road lights in most cars use yellow light. Color temperature is a measure of color temperature and is not a measure of the brightness of a lamp. The color temperature of the halogen lamp can be from 2300K to 7000K; the color temperature of the HID lamp is from 4200K to over 8000K; the higher the color temperature of the lamp, the worse the penetration of fog and rain (the less bright). Large manufacturers such as Philips have only produced xenon lamps with a color temperature of up to 6000K. The following are the performances of different color temperatures:
Light color temperature effect
3000K yellow light, strong penetrating power
4200K white with yellow, original car with xenon lamp
5000K light all white, the highest color temperature in Europe
6000K light all white, slightly blue
6500K daylight in the sun
7000-8000K white with obvious blue
8000K or more of blue light, the penetration is extremely poor. It is recommended that the color temperature of about 6000K is the color temperature of the whitest slightly starting to turn blue. The human eye is easy to accept, not easy to fatigue, improve safety, and the halogen lamp is poor.
4. Select the basic performance of LED light source to pay attention to
With the enthusiasm of the market, as a consumer, the choice is still to be calm, scientific analysis, select the best cost-effective light source and lighting, the following describes several basic performance:
1, the brightness of the brightness is different, the price is different. For luminaires, it should meet the laser class I standard.
2, anti-static ability anti-static ability, long life, and therefore high price. Generally, antistatic is greater than 700V for lighting.
3. The wavelengths are the same, the colors are the same. If the colors are the same, the price is high. It is difficult for manufacturers without spectrophotometers to produce pure color products.