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Light Sources News
OLED promises more secure communications
WÜRZBURG, Germany – A new organic LED (OLED) structure emits single photons and could improve security for data transmission. Such single-photon-emitting light sources are a basic requirement for new encryption technologies, said Jens Pflaum, a professor at the Institute of Physics of the University of Würzburg. Pflaum developed the device with physicists from the universities of Stuttgart and Ulm. Currently, malicious parties can “fish for” data during transmission without being detected becau...
Osram Develops GaN-Based LEDs on Silicon
Mar 1, 2012 — To replace the sapphire substrates commonly used in the LED industry, researchers at Osram Opto Semiconductors have manufactured blue and white LED prototypes in which gallium-nitride layers are grown on 6-in. silicon wafers. The new chips, which...
Out of the blue, into the office
Mar 1, 2012 — Working outdoors in the sunshine with blue skies and fluffy white clouds overhead – it sounds a little like heaven, doesn’t it? Except when rain falls, snow blows or wind gusts, of course. Skylights can provide much the same effect...
Radiant Zemax Secures Company
Mar 1, 2012 — To strengthen its European presence, Radiant Zemax LLC of Redmond, Wash., has acquired its longtime UK-based distributor 11013%%Optima Research Ltd.
Siemens Unit Sets Record
Mar 1, 2012 — Osram, a subsidiary of Siemens AG of Munich, has developed an organic LED (OLED) that generates 32 lm/W, making it more efficient than a halogen lamp. Osram researchers have produced a flexible OLED that emits white light from a surface measuring...
Transparency discovery could benefit LEDs, touch screens
SANTA BARBARA, Calif. – Scientists have uncovered the fundamental limitations of optical transparency in tin dioxide (SnO2), a common conducting oxide. The discovery could lead to more energy efficient photovoltaics, LEDs and LCD touch screens. Transparent conducting...
Glass-Based LEDs Go UV
LOS ALAMOS, N.M., Feb. 28, 2012 — Inorganic LEDs that emit in the difficult-to-achieve ultraviolet range were produced by embedding nanocrystals in glass, a step toward using such devices in biomedical applications.
New Bandgap Boundaries Could Boost Electronics
OAK RIDGE, Tenn., Feb. 23, 2012 — A novel layer-by-layer growth technique can achieve a 30 percent reduction in the bandgap of complex metal oxides, bumping up the performance of solar cells, LEDs, displays and other electronic devices.
Alfven Instrument to Assess Aurora’s Aura
POKER FLAT RESEARCH RANGE, Alaska, Feb. 22, 2012 — A small rocket was launched into the aurora borealis in an attempt to discover what makes the northern lights tick.
OKI Develops Entangled Light Source
TOKYO, Feb. 21, 2012 — The telecommunications company developed the world’s purest quantum entangled light source.
Bridgelux Attracts $25M Investment
LIVERMORE, Calif., Feb. 13, 2012 — Kaistar Lighting (Xiamen) Co. Ltd. will invest $25 million in the LED lighting solutions manufacturer to drive down the cost of solid-state technology for general lighting.
Creasey to Lead Ocean Optics OEM Team
DUIVEN, Netherlands, Feb. 8, 2012 — As director of OEM business, Dr. David Creasey will lead the company’s sales and engineering teams in the US, Europe and Asia Pacific in providing integration support to original equipment manufacturers.
Radiant Zemax Acquires Optima Research
REDMOND, Wash., Feb. 8, 2012 — To strengthen its European presence, the test and measurement company bought its longtime UK-based distributor.
OLED Glass Venture Formed
CORNING, N.Y., Feb. 6, 2012 — Combining Corning’s Lotus Glass substrate technology with Samsung’s OLED displays, the Korea-based entity will supply OLED backplane glass substrates for Samsung Mobile Display as well as the broader Korean market.
“Egg crate” structure optimizes QD-LED performance
CAMBRIDGE, Mass. – A new quantum-dot (QD) LED “egg crate” design turns formerly troublesome ligand molecules into a critical element of a more versatile quantum-dot LED structure for applications in lighting, lasers and displays. Ligands – organic...
Blocked holes boost light on the nanoscale
PRINCETON, N.J. – Capping a hole should block light transmission through that hole, right? Not on the nanoscale. In fact, placing a metal cap over a small hole in a metal film does not stop light from passing through the hole, but rather enhances its transmission....
Cree Unit Set to Grow
Feb 1, 2012 — Wisconsin-based Ruud Lighting, a subsidiary of Cree Inc., announced a 208,000-sq-ft expansion of its manufacturing facility and a $24.5 million investment in the fabrication and assembly of LED lighting. The company estimates that 469 full-time...
Light-triggered robotic arm bends, stretches
TOKYO – As the world gets smaller and smaller, microrobots and nanomachines become more important for fabrication, assembly and other tasks. Controlling such tiny machines can be problematic – cable-based controls don’t work at such small scales...
Material glows in NIR for two weeks
ATHENS, Ga. – Move over, cheesy glow-in-the-dark plastic toys that take forever to “charge up” with light and that fade to black in a blink. A new material can emit a near-infrared glow for two weeks after a single minute of exposure to sunlight, or...
Microplasma arrays promise to revolutionize lighting
ARLINGTON, Va. – A new plasma-based lighting system comprising microcavity arrays produces inexpensive, wafer-thin, flexible sheets of light – and its creators say it will revolutionize illumination. Just as in a fluorescent light, a microcavity array is...
Innovative Light Source Developed
WÜRZBURG, Germany, Jan. 30, 2012 — Significant progress in the fabrication of light sources that emit single particles of light has been made. A collaboration of German physicists has developed tiny components that could ensure that data is no longer “fished for” during transmission...
SPIE Presents Green Photonics Awards at Photonics West
BELLINGHAM, Wash., Jan. 30, 2012 — The awards recognized four papers for their innovative research to advance green photonics in the categories of lighting, manufacturing, computing and energy.
OLED Achieves 32 Lumens Per Watt
MUNICH, Jan. 27, 2012 — Siemens AG announced that its Osram subsidiary has set a new efficiency record, developing a new organic LED (OLED) that generates 32 lumens of light per watt, making it more efficient than a halogen lamp. Osram researchers have now produced...
2011 Prism Award Winners Announced
SAN FRANCISCO, Jan. 26, 2012 — Amplitude Systèmes, PD-LD and 89 North were among nine winners of Prism Awards for photonics innovation announced by Photonics Media and SPIE at a gala banquet Wednesday night during Photonics West. The fourth annual Prism Awards honored 28...
Transparency Limits on Conducting Oxides Identified
SANTA BARBARA, Calif., Jan. 25, 2012 — Scientists at the University of California, Santa Barbara, have used tin dioxide (SnO2) to uncover the fundamental limitations of optical transparency in conducting oxides. The finding could lead to more energy-efficient photovoltaics, LEDs and LCD...
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August 2024
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