| Several LED manufacturers, including Cree, Nichia, Osram Opto and Philips Lumileds, have introduced new LEDs for lighting applications.
Nichia releases high-power, point-source white LED NVSx219A
Nichia has released of a new line of high-power, point-source white LEDs, known as Nichia part number “NVSx219A” or “Nichia 219." The products are aimed at interior and exterior general-illumination applications where directional, volumetric lighting is desired.
The Nichia 219 white LED offers typical 140 lumen output at 1 W input power with 5000K color temperature. At 350 mA drive current, the typical forward voltage is only 3.0 V. Additionally, this package is capable of drive currents up to 1.5 A.
To make Nichia 219 user friendly, the company has incorporated an electrically-isolated heat sink in the LED design, and lowered the junction-to-board thermal resistance. The symmetrical package with a dome lens measures 3.5 x 3.5 mm.
Nichia intends the 219 white LED to be Energy Star compliant. This includes ANSI standard chromaticity binning, full color-temperature selections, high CRI performance, LM-80 test data, and other relevant certifications. To enhance the delivered lumen output under thermally-stabilized conditions, Nichia engineers have drastically improved the lumen maintenance at higher junction temperatures.
Nichia 219 white LED packages samples are available in limited quantities.
Osram Opto unveils Ostar Lighting Plus, Oslon SSL 150
This week at electronica in Munich, Germany, Osram Opto Semiconductors is unveiling Ostar Lighting Plus, a four-chip LED package ideally suited for use in retrofits for incandescent or halogen lamps.
The Ostar Lighting Plus LED has a light output of 425 lm (5700 K to 6500 K) or 365 lm (2700 K to 4000 K) at an operating current of 350 mA. This results in a typical efficiency of approximately 100 lm/W or 80 lm/W respectively.
“Ostar Lighting Plus is very efficient at higher currents and offers high light output thanks to the extremely uniform flux distribution over the entire chip surface,” said Andreas Vogler, Marketing Manager for General Illumination (SSL).
Homogenous white light is ensured by an ANSI-compatible binning system with fine sub-bins. The LED is easy to handle due to its SMT compatibility.
With a power draw of less than 5W, the warm white Ostar version produces 365 lm from only four chips, significantly brighter than 25W incandescent lamps, which produce only 220 lm. Only four Ostar Lighting Plus units are needed to replace a frosted 100 W incandescent lamp, says Osram Opto. The Ostar Lighting Plus has a color-rendering index (CRI) of 80.
Osram Opto has also introduced the Oslon SSL 150, a single-chip package with a 150-degree beam angle. The wide beam enables the light to be used in reflector systems with much lower light losses.
The LED is based on a 1mm2 chip, providing a typical brightness of 92 lm at 3000 K at an operating current of 350 mA and 156 lm at 700 mA. It is available in all white tones (2700-6500K) and in different colors. Oslon SSL 150 is the latest addition to the Oslon SSL product family (beam angle of 80 degrees) and has dimensions of 3 x 3 mm.
Cree unveils high color-rendering XLamps
Cree, Inc. (Nasdaq: CREE) has added 80, 85 and 90 color rendering index (CRI) options to its XLamp XP-G and XP-E warm-white LEDs. Many lighting applications, such as retail, medical and architectural, require high color accuracy to properly render object colors.
With previous-generation high-CRI white LEDs, increasing color quality meant decreasing efficacy. Cree says that the new high-CRI XP-G and XP-E parts allow luminaire and fixture designers to have both.
The new high-CRI XP-G is available with luminous flux of up to 107 lumens at 350 mA in warm white (3000 K), providing efficacy of 102 lm/W. Using this new XP-G, LED lamp designers can create systems that are 70 percent more efficient than a traditional halogen PAR38 lamp and deliver similar high color rendering, says Cree.
High-CRI XP-G and XP-E LEDs are similar to standard XP-G and XP-E LEDs, respectively, and are available now in sample and production quantities with standard lead times.
Philips Lumileds adds 4000K Rebel, increases light output
Going back to early October, Philips Lumileds announced a new 4000K CCT ANSI-binned part to add to its Luxeon Rebel product portfolio, and raised the top flux bin for its cool and neutral white Luxeon Rebel by 20%.
The new 4000K CCT part delivers improved color rendering and tight binning to simplify luminaire designers engineering efforts, said Lumileds, and addresses specific needs in the office lighting segment where light output, efficacy and quality of light must meet certain levels
In addition, the top flux bins for cool and neutral white Luxeon Rebel parts have been increased to a minimum 120 lumen flux bin at 350 mA. These parts complement the companys Luxeon Rebel ES.
The entire Luxeon Rebel portfolio is available directly from Future Lighting Solutions, and ordering of small quantities is available on-line for immediate delivery.
About the Author
Tim Whitaker is the Editor of LEDs Magazine |
