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Optoelectronics/Displays??

UV LEDs tout >50,000-hour life span

Posted: 01 Aug 2011 ?? ?Print Version ?Bookmark and Share

Keywords:UV? LED? beam pattern?

Lumex Inc. has expanded its QuasarBrite UV family of LED solutions with the release of three new standard wavelengths and custom UV LED arrays. According to the company, the UV LEDs provide up to 50 percent cost savings, up to 70 percent energy consumption savings and superior light performance compared to other similar products in the market.

"Previously, widespread use of UV LED technology, especially in the shorter UV wavelengths, was hindered because the materials used in the epoxy LED lens degraded the lifespan of UV LEDs to less than 5,000 hours," said Kay Fernandez, product technology manager at Lumex. "Recent technological developments have allowed the epoxy lenses to be replaced by a robust TO-46 package with a glass lens, making it possible for QuasarBrite UVs to last 10x longerwith life spans of over than 50,000 hours."

In addition, QuasarBrite UV LEDs provide a uniform beam pattern that would require CCFLs a secondary lens to match the performance that results in additional cost and space investment, the company stated. The devices also do not contain hazardous mercury material found in CCFLs and are more durable in their design, thereby significantly reducing maintenance costs, Lumex added.

"Because of significant cost and performance benefits UV LEDs provide over alternative technologies such as CCFLs, there is a dramatic growth in demand for UV LED technology worldwide," explained Fernandez. "Lumex now offers a total of six standard UV wavelengths (355, 365, 377, 385, 405 and 415nm)."

The new 355, 365 and 377nm QuasarBrite UV LEDs feature an 80 viewing angle and operating temperature range from -40C to 100C. Samples of these devices are available immediately from stock. Standard and custom production lead times range from 18C20 weeks. Pricing is approximately $20 to $28 per unit in production quantities dependent on size and quantity ordered. They are suited for a wide range of applications such as security (counterfeit detection for currency, passports and other travel documents), forensic (applications related to forensic analysis of bodily fluids) and photo catalyst (for air and water purifier applications in homes, offices and automobiles).





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