The Development of LED Lighting Technology Trends

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Article ContentAuthor NameArticle TitleHomeSubmit ArticlesAuthor GuidelinesPublisher GuidelinesContent FeedsRSS FeedsFAQContact Us The Development of LED Lighting Technology Trends   by 848664149in Art / Painting    (submitted 2012-05-21)

LED compact light-weight, low driving voltage, full-color, long life, high efficiency, resistance to vibration, easy to control light for the design of lighting systems used in different places and the purpose of providing favorable conditions. People are accustomed to seeing things in the sunlight, for general lighting, people need the main light source close to the quality of the sunlight, the white LED is an important indicator of the semiconductor lighting technology. Small single LED power light low brightness, and should not be used alone, this must be more than one LED assembly designed to be a practical LED lighting systems. However, white LED and general lighting requirements, a certain distance, there are still many technical and cost issues need to be resolved.
The main technical overview of the semiconductor lighting system
First. The heat of the lighting system
Commonly known as LED cold light source, LED light principle is issued a photon, electron after composite without the need for the hot process. However, due to the presence of Joule heat, the LED is illuminated at the same time accompanied by heat, but also for the occasions of high-power LED applications, the calories add up and can not be underestimated, the LED is different from the traditional incandescent, fluorescent and other lighting light source, the high temperature will shorten, or even termination of their service life. And the LED is a temperature sensitive device, when the temperature rises, the efficiency of a sharp decline in system architecture design and cooling technology development is also a LED applications need to face the issue. Forced air cooling is usually in the light is not desirable, with the input power increases, the heat sink and the other to enhance natural convection cooling methods play an increasingly important role in the LED lights and light design.
Second. Improve the color rendering
White LED widespread use of blue LEDs superimposed excited by blue light, yellow light yttrium aluminum garnet (YAG) phosphor, the synthesis of white light. Because of its luminescence spectrum contains only blue, yellow, two spectrum, so there is a high color temperature, and low color rendering index, does not meet the general lighting requirements. The sensitivity of human eye color is much higher than the sensitivity of the light strength of the lighting, the light source color is often more important than the luminous efficiency. So by adding the right amount of red phosphor and can maintain a high luminous efficiency white LED lighting in an important issue.
Third. Design of the lighting system of the second optical
Traditional lighting with incandescent, fluorescent light for a long time for a reference to determine the standard of optical and shape of the lamp, LED lighting system should be considered to get rid of the traditional lamp with LED light module assembly, fully consider the optical properties for thethe LED light source designed different lighting. The optical system design include the following several aspects: one, determine the optical system according to the needs of lighting objects, luminous flux, the shape, the number of LED and the size of the power; two. The number of LED light ring light source combinations designed as a point source, or "secondary source" of the surface light source, according to the combination into a secondary source to calculate the illumination optical system; three, constitute a "secondary source of illumination optical system design on each LED tube with light distribution control is very important.
Beam focus on the LED easier to control, and requires no reflector, condenser, helps to reduce the depth of the lamp. For example, using the plane mirror optical system, it can use only two LEDs can illuminate a large surface, the lighting depth is very thin; while the use of optical technology, the LED is mounted directly next to the light pipe, can greatly reduce the light source and the other group pieces of occupied volume, made of ultra-thin lamps.
About the Author

Shenzhen Ohmax Optoelectronic Lighting Co., Ltd. is a professional design, development, production and sales of LED high power lamp beads package, LED application lighting company. We are committed to the development of high brightness LED products, LED chip, lamp beads, application engineering lamps. Our company is committed to produce LED grow lamp, LED light tube, waterproof LED lights and LED Indoor lighting. For Ohmax, the ultimate objective is customers' satisfaction, therefore, you shall find us always follow a business concept of rigorous and pragmatic, and very meticulous about every detail of your requirements, and it's in that spirit that you will enjoy a pleasant business experience when dealing with us.

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