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Color rendering index in the LED
Lighting sources have very strict standards of color rendering index and light source stability, and there is still a large gap in this point for the LED. The color consistency of lighting is also very important, while there are considerable difficulties for LED devices to meet the conformance requirements of this color.

Luminous performance of LED light
The main method to improve the LED luminous efficiency is to improve the structure and manufacturing process of the semiconductor light emitting material and the LED chip. So the manufacturers led tube lighting pays much more attention to this aspect.

High-power issue of LED lights

As an ordinary illumination, the light flux of the individual LED outputs must be sufficiently large. In order to achieve the needs of the luminous flux, low-power LED lighting must concentrate multiple LED to meet the design requirements, the disadvantage is the complex circuit, poor heat dissipation, inconsistent color rendering index. In contrast, the monomer of high-power LED power is much greater than the sum of a number of small power LED, allowing larger operating current, and power supply lines is relatively simple, perfect heat dissipation structure, color rendering index consistent, longer life, so the high-power LED devices will replace the small power LED devices. Currently, the focus of competition of the world's semiconductor lighting technology and industrialization concentrated is in the blue, purple, white, and high-power high-brightness chip. High-power chip production equipment abroad is still in the developing phase, and large power dissipation, the large amount of heat, high light efficiency put forward a new and higher requirement for the packaging process, the equipment and materials.

Heat issue of the LED light

If the LED junction temperature exceeds the standard limit value, it will results in the unrecoverable light intensity attenuation. High power LED will generate a lot of heat in the work, and if it will not effectively solve the problem of heat dissipation, then the performance of led tube lamp will be reduced and the service life will be shorten, and therefore it is essential to effectively solve the heat problem. Obviously, besides the required a large area outside the chip in the design of the larger of the input power LED device and lamps, but also a good heat dissipation structure will be equipped with.
Design issues in the optical system
Since the light normally emitted from the LED is relatively concentrated in a small solid angle range, and the reflector in the general lighting is no longer the necessary optical component, and optical lens are often used as a collimating assembly, and then pincushion lenses, wedge, prism make the re-diffusion of the beam deflection, resulting in the light distribution to meet the standard requirements of the various lights. So the unique secondary optical system design is required on the LED lights.

www.ervan.cn is a professional LED tube manufacturer located in Shenzhen, China. ERVAN is our trade mark. Our Company was founded in 2002 and started Researching and Developing LED tubes since 2005. Now, our tubes are upgraded to the top level in the world, and we are one of the top 10 LED Tube manufacturers. We set up on the firm belief of offering the high quality, unique design and fully warranted LED tubes to our customer at the most competitive price.