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News tagged with white led

High-quality white light produced by four-color laser source

(PhysOrg.com) -- The human eye is as comfortable with white light generated by diode lasers as with that produced by increasingly popular light-emitting diodes (LEDs), according to tests conceived at Sandia ...

Physics / Optics & Photonics

created Oct 26, 2011 | popularity 4.9 / 5 (9) | comments 19 | with audio podcast

Do white LEDs disrupt our biological clocks?

You come into contact every day with light-emitting diodes (LEDs) -- they illuminate alarm clocks, new televisions, traffic lights, and smartphone displays. Increasingly, you will see white-light versions ...

Medicine & Health / Health

created Oct 17, 2011 | popularity 4.5 / 5 (8) | comments 6 | with audio podcast

'White' light suppresses the body's production of melatonin

Exposure to the light of white LED bulbs, it turns out, suppresses melatonin 5 times more than exposure to the light of High Pressure Sodium bulbs that give off an orange-yellow light. "Just as there are regulations and standards ...

Medicine & Health / Health

created Sep 12, 2011 | popularity 5 / 5 (17) | comments 23 | with audio podcast

White LEDs with super-high luminous efficacy could satisfy all general lighting needs

(PhysOrg.com) -- Researchers from the Nichia Corporation in Tokushima, Japan, have set an ambitious goal: to develop a white LED that can replace every interior and exterior light bulb currently used in homes ...

Technology / Engineering

created Aug 31, 2010 | popularity 4.8 / 5 (50) | comments 34 | with audio podcast feature

OLED Tunes its Colors for Sunlight-Style Illumination

(PhysOrg.com) -- Scientists have developed a lighting device that can change its color temperature throughout the day, matching the natural daylight chromaticities produced by the sun. Currently, no other ...

Physics / General Physics

created Jul 16, 2009 | popularity 5 / 5 (39) | comments 15 feature

Low-cost LEDs to slash household electric bills

A new way of making LEDs could see household lighting bills reduced by up to 75% within five years.

Technology / Engineering

created Jan 29, 2009 | popularity 4.5 / 5 (33) | comments 30