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Mechanoresponsive Healing Polymers
Variable Permeability Magnetometer Systems and Methods for Aerospace Applications
Evaluation Standard for Robotic Research
Small Robot Has Outstanding Vertical Agility
Smart Optical Material Characterization System and Method
Lightweight, Flexible Thermal Protection System for Fire Protection
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OLED Panel

The ORBEOS panel from OSRAM Opto Semi con ductors, San Jose, CA, has a round lamp surface of 80mm diameter, is 2.1mm thick, and weighs 24g. With an efficiency of 25lm/W, the panel beats that of conventional halogen lamps. Its warm white color temperature (2,800K, CRI up to 80) matches the warm light of an incandescent lamp, and is therefore suited to lighting that is atmospheric and functional at the same time. ORBEOS can be switched on and off without delay and is continuously dimmable. The panel contains no mercury and emits no UV or infrared radiation. Its brightness level is usually 1,000cd/m² with power input of less than a watt. In ideal operating conditions it has a lifespan of around 5,000 hours. www.osram-os.com

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UV LEDs

QuasarBrite™ UV LEDs from Lumex, Palatine, IL, are available in 385nm, 405nm, and 415nm wavelengths at 4-6mW in through-hole format. A robust TO-46 package with a glass lens provides a lifespan of more than 50,000 hours. QuasarBrite UV LEDs provide a uniform beam pattern and do not use the hazardous mercury material found in CCFL technology. Lumex’s UV LEDs have up to 70% lower energy consumption than CCFLs. The UV LEDs are ideal for a wide range of applications, such as bacterial and superficial sterilization for medical device technologies; industrial control device technology related to leak and biohazard detection; forensic applications related to counterfeit detection; and ink fluorescing. www.lumex.com

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High-Output Red LEDs

Opto Diode, Newbury Park, CA, offers the OD- 624L High-Output Red LED with a dominant emission wavelength at 624 nm (typical) and a narrow beam angle that is ideal for fluorescence in medical, scientific testing instruments, and forensic applications. The lighting device delivers total power output ranging from 80 mW (minimum) to 170 mW (typical). The high-output red LED comes in a hermetically sealed TO-5 can with three leads. Under absolute maximum ratings at 25°C, the continuous forward current is 500 mA, with reverse voltage of 10V. The lead soldering temperature is 260°C, making the LED easy and convenient to install into new and/or existing lighting systems. www.optodiode.com

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White LED Backlight Driver

Alpha & Omega Semiconductor, Sunnyvale, CA, has expanded its EZBoost™ family with a white LED backlight driver, the AOZ1950. The AOZ1950 provides backlighting solutions for portable devices using medium-sized LCD panels such as netbooks, media players, and navigation devices. The AOZ1950 is a high performance current-mode boost regulator that operates from an input voltage range of 2.7V to 5.5V. Its integrated AOS Trench MOSFET boost switch allows the device to generate a regulated output voltage as high as 55V with an input switch current of 750mA. www.aosmd.com

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Greening the Golden Arches

By Gary Trott, Cree, Durham, NC www.cree.com L ast July, Ric Richards — a fast-food franchisee — opened the first green McDonald’s in North Carolina, proving that it can be affordable and effective to build a sustainable fast-food restaurant. One of the key green elements to the Cary, NC-based McDonald’s is energy-saving, high-quality LED lighting.

Posted in: Application Briefs, Lighting

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Bright and Economical LEDs Enable Mobile Projection

3M, St. Paul, MN www.3m.com OSRAM Opto Semiconductors, Sunnyvale, CA www.osram-os.com Micro projectors from 3M that can be connected to mobile phones and cameras include LEDs from OSRAM Opto Semi-conductors. The small, bright, energy-saving diodes were the key to developing the micro projectors, which could not be implemented with other light sources. Depending on lighting conditions, the LEDs project images of more than a meter.

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Sliding Mode Pulsed Current Averaging IC Drivers for High-Brightness Light Emitting Diodes

Fewer external components and high power efficiency SynDiTec Inc., San Jose, CA This project developed new light emitting diode (LED) driver ICs associated with specific (uniquely operated) switching power supplies that optimize performance for High Brightness LEDs (HBLEDs). The drivers utilize a digital control core with a newly developed nonlinear, hysteretic/sliding mode controller with mixed-signal processing. The drivers are flexible enough to allow both traditional microprocessor interface as well as other options such as “on the fly” adjustment of color and brightness.

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