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Optoelectronics/Displays??

UV LEDs promise improved lifespan, durability

Posted: 02 Feb 2010 ?? ?Print Version ?Bookmark and Share

Keywords:UV LED? wavelength? CCFL?

QuasarBrite UV LEDs

Lumex has developed the QuasarBrite UV family of LEDs touted to provide a 10x longer lifespan, a tight beam angle, enhanced durability and up to 50 percent cost savings compared to alternative technologies.

The RoHs-compliant QuasarBrite UV LEDs are available in 385-, 405- and 415nm wavelengths at 4- to 6mW in a through-hole format.

The QuasarBrite UV technology is well-suited for a wide range of applications including bacterial and superficial sterilization for medical device technologies related to phototherapy, dental, and dermatology equipment, but also industrial control device technology related to leak and biohazard detection or forensic applications related to counterfeit detection and forensic analysis of bodily fluids.

"Despite the many benefits of UV LED technology, adoption has been limited in the past due to the fact that the materials used in the epoxy LED lens degraded the lifespan of UV LEDs to less than 5,000 hours," explained Jeff Oliveros, director of engineering at Lumex.

"Having replaced the epoxy lenses with a robust TO-46 package with glass lens, QuasarBrite UV LEDs now last at least 10x longer, providing a lifespan of more than 50,000 hours."

In addition to enhanced life span, QuasarBrite UV LEDs provide several key benefits compared to alternative technologies like cold cathode fluorescent lamps (CCFLs). QuasarBrite UV LEDs provide a uniform beam pattern. To match this performance CCFLs would require a secondary lens resulting in additional cost and space investment.

Additionally, QuasarBrite UV LEDs do not use the hazardous mercury material found in CCFL technology and are more durable in their design, thereby significantly reducing maintenance costs.

Finally, Lumex' UV LEDs have up to 70 percent lower energy consumption than CCFLs. These factors combined allow the company to boast up to 50 percent cost savings compared to CCFLs.

Samples of these devices are available from stock, with custom production quantities in eight to ten weeks and standard production quantities in six to eight weeks.

- Julien Happich
EE Times Europe





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