Introduction to LED lighting anti-dazzle accused of light materials

01

lighting a new development direction of innovation two kinds of demand and technology. As the latest LED light source technology will push the lighting?

light source is lighting source. Human beings for a long time on the application of the light source is mainly manifested in the natural light, has given rise to many of the great architectural culture, is not a discussion. In terms of artificial light, experience the rage homologous, light temperature homology ( In bold) To the photon theory of the three main stages. Rage at the same stage, the main task of the lighting is how to put the fire more flourishing, the ancients by looking for more instead of the ordinary wood burning pine to innovation, notice that after oxidation, the innovation lies in the more oxygen mixed with better fuel, the streets of London a good gaslight witnessed the pioneer efforts. As the further development of light and fire separation, familiar Edison, the experiment of high temperature resistant material to improve the light life, who was the historical mission of the generation of lighting. One generation theory generation technology products, the photon theory background, the birth of fluorescent lamp, metal halide lamp and great LED, why do you say it great? Because this is the first time that there is no high temperature to indirect access to the light, for the first time realized from electronics to photons without intermediate state transformation. Benefits are clear, middle level means less efficient, LED today, the efficiency of 160 lm/w is not what high-tech, its theoretical limit 355 lm/w, External quantum efficiency of 100%) In terms of both beginning and has a long way; Bypassing the high temperature this link, also has brought the light life significantly increased; Fluorescent lamps need to slowly to the brightest, metal halide lamp need to start time, comes from temperature rise will take time, and millisecond LED light; Drop in temperature, reducing device, LED volume decreased significantly. High efficiency; A long life. Low temperature; Fast response; Small.

high efficiency, long life will continue to develop, but the key battleground. Because of the economy, further enhance the benefits of limited, life needs ( Decorate period) Is the basic content, technical breakthrough of increasing difficulty. Associated demand upgrade the satisfaction of demand, more and more places, is no longer simply emphasize lights, and where to let there be light - accurate light distribution, what kind of light - color rendering index, color temperature, panchromatic domain index, the tolerance of color, light spot shape, flare, advocate complementary flare, glare, higher requirements are put forward.

fast response and electronic devices of electric lighting products itself at the same time, the characteristics of the layout grid combined with hot Internet of things will also promote the upgrading of products.

combined with low temperature, small. Made a lot of innovation of the industry, but not enough, the LED lighting products, there is no essential difference between form and the traditional age. Its characteristics make lens ( Traditional time for reflector) As the main light distribution of tools. But volume of lamps and lanterns, form the traditional lights are not out of the shadow. This will be one of the major breakthrough in the development of LED lighting, the characteristics of low temperature to play as more material to the characteristics of small size to form diversification of lamps and lanterns, use more flexible, but also put forward higher requirements, such as: concealment - see light see light; Homologous diversity - with more light distribution. All call product miniaturization, modularization, and shiny surface is not as small as possible, so the evolution of the miniaturization direction should be flat.

check that LED the development of the four direction: a, light quality, second, the flat, three, modular, intelligent four,

02 LED lighting challenges of longevity and

the LED light source and efficient basic requirements, but the challenges remain, system life: life of power, more device solder process stability, temperature and so on. To reduce glare, optimize the flare, eliminate dispersion can significantly reduce the photosynthetic efficiency, leading to low system efficiency. Stadium lighting and other fields, is limited by temperature management, system power and total luminous flux is low.

light quality, more big challenge.

LED small volume of the whole lamp technology put forward higher requirements. Mainstream lens, especially the small beam Angle, the small lens, small assembly error may lead to match the sharp deterioration in light, as shown in figure 1.

figure a

lighting products means the main light distribution from the reflector switch to the lens, the dispersion ( Unique refraction) Become a big obstacle light quality. At present, eliminate scheme is single.

the consistency of the light source is not very good solve, color temperature color tolerance difference between batches is relatively large, especially for high power small Angle linear light influence.

judgment of stroboscopic lighting needs to be standard and unified.

flat roads, high-power products less than, and mainly panel lights and other large Angle with light products. Absence of small Angle optical solutions.

modular, see more at street light tunnel lights, other lamps and lanterns is developing slowly.

intellectualization, the road a long way to go. Don't talk about intelligence, dimming, only talk about simple indoor commonly used 0 to 10 v dimmer, tangential dimming, Dali control, and outdoor common DMX512 control, how to integrate as a whole is also a practical engineering project are faced with the problem.