Application of optical coating in electric light

Developed as an important branch of modern optics, optical coatings in the wave theory of light and the corresponding theoretical foundations. Optical films are widely used in various optical devices (eg laser cavity interference filter, optical, etc.). Important role in the electric light was detected by a little.With electric light, a single coat of low-pressure sodium lamps used in the past. The low pressure arc discharge tube for the sodium temperature at 260 ° C maximum in the visible output. In addition to the inner and outer cylinders in a vacuum chamber of magnesia to convective heat loss and chemical spraying to prevent the bladder wall covered with zinc oxide doped with tin. The film can back into the tube infrared and visible light to be reflected. Metro near the core of the electrode layer has a similar role in a metal halogen lamps.Typical applications of fluorescent lighting direction, TiO2 coated with fluorescent change the initial radial symmetric distribution of light to illuminate the area code, such as membrane-type fluorescent lamp reflectors to achieve.Department of TiO 2 single-layer high transmittance of visible light. In addition, the optical film layer of the semiconductor type. UV radiation, diffuse to the inner surface of the hole, hydroxyl adsorbed on the surface play a role in the formation of highly active hydroxyl gene can break down the adhesion of organic compounds, dust particles play while the effect of sterilization. This thin layer of light as a small amount of UV radiation, its role in environmental protection is more important, can be used by the floods in the lighting inside and out can also be used in water treatment, air purification and other environmental issues.Single-layer dielectric film for selective reflection, but also to further improve the rebound compared to using multiple dielectric. The film, switching from high and low refractive index material nickel oxide coating to form a substrate (glass) can, high reflectance. The greater the difference between the two thin film refractive index, better multi-layer dielectric layer is mainly a light bulb (incandescent, halogen) is still the main source of internal illumination light, the efficiency is very low. Multi-layer dielectric layer, part of the infrared reflection back to the thread, re-heating the filament in order to reduce energy consumption to the required temperature in order to increase the thread luminous efficiency, saving in order to obtain energy. Selective regulation of the dielectric multilayer reflection of light source spectral distribution of energy so that the color of the light source is suitable for your needs. Using this technology to develop new fog lamps car. Technology can be used in colored light bulbs, lamps mosquito production. Colorful foam dielectric film technology to produce more than the color of stained glass, or enamel is also higher brightness. This light is widely used in film and television will be able to reduce the chilled food, museums and other areas of intervention of color film lighting, thermal radiation from the illuminated object to remove lamps or infrared.Coated barium titanate is becoming more common in the electric light. But now it is still in its infancy. Department so far the most complex applications monolayers and gain experience in research and development of dielectric films. Taking into account such factors as economy and efficiency, requires industry and market applications based on dielectric films, and even electric light sources for further research and development. The materials related to further develop the use of advanced equipment and use of new technologies, optical coating is required to give a revival of the development of light industry.

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