Features

Intelligent Back Light

EVT (Karlsruhe, Germany) has introduced a new industrial back light in its BrainLight smart illumination series. The LEDs of the intelligent back light can illuminate in the colors red, green, blue and white. There is a diffusor plate in front of the LEDs so that the light spreads evenly over the object. All together there are 48 full-color LEDs arranged in a tight grid. The BrainLight QC is 30 x 40 mm in size and has an input voltage of +24V. It is modularly expansible, meaning LED rows can be added, depending on application. The customer can choose any of the four available colors and the LEDs can be switched on row by row. Light sequences can be programmed and played successively. To learn more, click here.

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Flexible Light Engine Material

Norlux (Elgin, IL) has introduced new NorFlex brand flexible continuous light engine material. The cuttable high-power LED circuits on a semi-rigid material provide 5x the lumen output of low power flex materials. Available on 200-400 ft. reels, the material is cuttable to maximize production flexibility. No special tools required! Most parameters are customizable – width, length, CCTs, LED spacing, power levels, custom components, etc. Both Constant-Current and Constant-Voltage versions are available. NorFlex circuits are designed to provide superior thermal performance, eliminating the need for big heat sinks. Suitable for fixtures with curved surfaces, low profiles or edge-lit. To learn more, click here.

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Diffuser Sheet Catalog

Lambda Research Corporation (Littleton, MA) recently added the Luminit Light Shaping Diffusers (LSDs) catalog to the latest version of its flagship TracePro software, TracePro v7.6. This new TracePro diffuser catalog includes Luminit’s 10, 20, 40, 60, and 80 degree isotropic diffusers and their 15x1, 30x5, 60x10, 75x45 anisotropic diffusers. TracePro v7.6, also includes the capability to create repetitive features on curved surfaces, and new macro editor and a simplified menu structure that broadens the program’s capabilities. TracePro’s Source Editor has been expanded to operate on Grid and File sources. The incident ray table now includes Optical Path Length information for each ray. To learn more, click here.

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60V LED Driver

Linear Technology’s (Milpitas, CA) LT3952 is a current mode step-up DC/DC converter with an internal 60V, 4A DMOS power switch. It is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage source. Input voltage range is 3V to 42V. The LT3952 can drive up to sixteen 350mA white LEDs from a nominal 12V input, delivering in excess of 15 watts. It incorporates a high side current sense, enabling its use in boost mode, buck mode, buck-boost mode or SEPIC topologies. The LT3952 delivers efficiencies of over 94% in the boost topology, eliminating the need for external heat sinking. To learn more, click here.

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Generating Broadband Terahertz Radiation from Microplasma in Air

Researchers at the University of Rochester’s Institute of Optics have shown that a laser-generated microplasma in air can be used as a source of broadband terahertz radiation. Fabrizio Buccheri and Xi-Cheng Zhang recently demonstrated that an approach for generating terahertz waves using intense laser pulses in air – first pioneered in 1993 – can be done with much lower power lasers, a major challenge until now.

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Scientists Use X-Ray Laser to Track Ultrafast Creation of a Catalyst

An international team has, for the first time, precisely tracked the surprisingly rapid process by which light rearranges the outermost electrons of a metal compound and turns it into an active catalyst – a substance that promotes chemical reactions. The research, which was performed with an X-ray laser at the Department of Energy’s SLAC National Accelerator Laboratory, could help in the effort to develop novel catalysts to efficiently produce fuel using sunlight.

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High-Power Laser Spinoff Proves Versatility is Strength

Since lasers were invented in 1960, they have penetrated countless scientific, industrial and recreational fields from eye surgery to DVD players, from cutting steel to triggering ignition in missile stages. That last use is a target market for Alfalight, a University of Wisconsin-Madison spinoff that set out in 1999 to use patented technology to make lasers for the telecommunications industry. At the time, "a tremendous need was forecast for these high-power, reliable lasers in telecom," says Ron Bechtold, Alfalight's vice president of marketing and sales.

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