Classification of optical fiber product

classification of LED product

Optical fiber is polymerized by (liquid) high molecular

LED， light emitting diode,is a kind

of solid semiconductor device which can directly transform electricity into light.Heart of LED is a semi conductive chip, one end of which is attached on the bracket. One end of LED is cathode and the other end is anode. Whole chip encapsulated by epoxy resin. The Semiconductor chip consists of two parts. One part is p-type semiconductor, in which electron hole is dominant, and the other part is N-type semiconductor, in which electronic is principal. When two kinds of semiconductors are connected, a PN junction will be shaped between them. When current passes through wire to act on this chip,electronic will be pushed towards P region, where electronic will do the recombination with electron hole, then energy will be sent out in the form of photons.This is the theory of LED's luminescence. Wavelength of light is the color of light and is determinated by materials of PN junction

compound, it is a kind of light-guide material for decorative illumination. With special high molecular compound as its core material and high-intensity, transparent and inflaming-retarding engineering plastics as its outer shell, optical fiber is featured by high light-guide, low-attenuation, photodetachment, free of heat, free of ultraviolet, safety, environmental protection, easy installation,exempt of maintenance, long performance life, abundant and irregularly-changed colors and strong plasticity. Therefore, it can be used widely on all sorts of decoration engineering, such as building, nightclub, disco, hotel, market, plaza and museum, and honored as an ideal material to replaced current means of decorative illumination.