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Advantages of Light Engines LEDs |
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Thanks to the ever increasing brightness of semiconductor dices, the development of solid state lights has generated a lot of new enthusiasm and allows different industries to develop new generations of products for known or new applications. The rapidly growing so called “high brightness” LEDs industry allows for some significant energy savings as well as increased lifetime compared to standard conventional lighting.
LEDs are typically focused devices and as such, can directly address some applications which need directional light beams without the need to develop any secondary optic systems! More over Light Engines Technologies is proud to offer a complete range of native viewing angles starting at an as low as 3° value.
For several years, Light Engines Technologies has been developing its own high brightness product series, combining some very unique LED package design characteristics leading to the following product benefits: Application Designed Optics, Patented Thermal Management, Cluster Integration
Application Designed Optics:
Large variety of viewing angles through Light Engines's patented micro-optics polycarbonate packaging guarantees both mechanical robustness as well as optical precision and provides an extreme protection against UV. Depending on required optical requirements, original designs can include Fresnel lens types for narrow beam characteristic or other native techniques allowing very smooth and large spatial distributions.
Patented Thermal Management:
Thanks to its unique LED base design, the luminous intensity output of any Light Engines light point offers up to 4 times light output of conventional 5 mm LEDs using the same chips. This unique patented thermal management design permits higher forward current and ensures the level of light extraction from any given grade of chip is fully maximized. Luminous intensity (brightness), wavelength (hue or colour), and forward voltage are the three main parameters of an LED that are affected by temperature. Ensuring that the dynamic power dissipation remains as large as possible by design permits the LED package thermal resistance to be as low as 14°/ Watt. These thermal design precautions keep the dice PN junction temperature as low as possible. This prevents the dice from working in modes with a higher number of recombination of holes and electrons that make no contribution to light emission. An obvious benefit of keeping a low working temperature is to maintain the semiconductor failure rate low and optimize the overall reliability.
Cluster Integration:
Clustering of lenses and clustering of dices are available - Customer specified designs can then provide direct and efficient answers.
One new and fast growing application segment for high Brightness LED is WHITE light illumination! Although white LEDs are currently not yet the most efficient method for illuminating a large area such as an office or a room, many new applications are quickly emerging, for example in architectural and road lighting, automotive interior and small area lighting, flashlights, to name just a few. The Light Engines LED package design, and in particular the use of innovative clustering techniques, helps facilitate the use of LEDs in an increasing number of new important applications segments. Product cost structure is kept low and superior luminous intensities levels are achieved. In order to characterize the light output of conventional lamps, the industry standard unit is the “lumen” which is essentially the total luminous power (luminous flux) emitted from the source (some Light Engines products reach levels of 275 Lumens). The luminous efficacy is the measure of the light-producing efficiency of the lamp (ratio of the lumens to the total input power of the source, expressed in “lumens/watt.”) Light Engines white light products reach levels of 25 lumens/watt and above.
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© Light Engines, LLC. 2009