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Orb Optronix announces new standard LED testing
services - 15 Jan, 2010
Orb Optronix announced today the current in conjunction with temperature to forward voltage using the 25ms pulse
company will offer Pulse Width Modulation produce the parametric data sets necessary method does not give realistic performance
(PWM) and Single Pulse LED to optimize LED performance in a PWM metrics for true use environments.
Characterization through its LED Test and controlled system.
Measurement Lab as standard testing As more sophisticated LED applications
services. PWM and Single Pulse LED Single Pulse LED Characterization allows a such as dimming, color control and color
Characterization services were previously customer to gather comparative data by mixing are introduced to the marketplace,
offered as customized tests for customers. testing a device using single pulse NIST LED Luminaire designers require testing
In response to requests from customers, traceable measurements. The resulting that reflects more realistic use conditions.
these services have been automated and measurements provide data for comparison These LED characterization methods are
are now offered as standard tests. of specific lots of LEDs to the specifications critical to ensure LEDs are meeting
provided by LED manufacturers in their manufacturer’s specifications, for “apples to
Customers utilizing Orb’s ET (Electrical- datasheets. These tests can also be used to apples” comparison of similar types of LEDs
Thermal-Optical) LED measurement generate comprehensive LED datasheets produced by different manufacturers and for
services, also known as ETO test services, for manufacturers from an independent test statistical studies of large lots of LEDs for
may now include PWM electrical input lab. quality and consistency.
variables and Single Pulse LED
Characterization in their test plan. Pulse Orb provides benchmark testing for “Orb is always responsive to customer
Width Modulation is a common method of comparative purposes. The current industry demands for better data. Our company is
varying the amount of power delivered to an standard of production testing LEDs with a providing systems and services to gather
LED. By varying the duty cycle, or on-time, single short pulse measures the basic critical information necessary for the proper
the LED output can be controlled. features of LEDs for sorting purposes. design of sophisticated LED systems.
For general illumination or display These quick measurements are very Although there are ad-hoc methods to
applications, the pulses occur much faster practical for the manufacturer as the same obtain some of this data, Orb provides a
than the eye will notice (100 Hz or faster). fixture can test 20 or more LEDs per much more comprehensive data set that can
second. be used to produce highly accurate LED
Orb Optronix PWM testing regime allows models created using NIST traceable
sweeping of any one of duty cycle (pulse However, the measurements of an LED’s measurements.” says Orb Optronix founder
duration), pulse frequency, or LED drive color, dominant wavelength, efficiency and Rand Lee.
AIXTRON participating in National German OLED to provide environmentally friendly light
Research Project “So-Light” -14 Jan, 2010
sources combined with novel design
opportunities.”
A new national R&D project has recently based OLEDs. As part of the latter element, AIXTRONs partners in the So-Light project
been started in Germany focusing on the AIXTRON will take the lead in this area are Novaled AG Dresden, Sensient Imaging
development of OLED displays and lighting through the optimization of its proprietary Technologies GmbH, Westfälische Wilhelms
applications. AIXTRON will participate in OVPD®* (Organic Vapor Phase Deposition) University of Münster, Fraunhofer IPMS
this 14.7 million Euro project together with technology. Dresden, Symboled GmbH, Fresnel Optics
ten other partners with the target to GmbH, Hella KGaA Hueck & Co, Siteco
strengthen Germany’s leading position in Other project deliverables will be application Beleuchtungstechnik GmbH, AEG-MIS
the fast growing OLED market. studies and demonstrator devices for specific mbH and the University of Paderborn.
applications such as automotive or
Funded by the German Federal Ministry of architectural lighting and backlights for large OVPD® technology has been exclusively
Education and Research (BMBF) for a total displays. licensed to AIXTRON from Universal
period of three years, So-Light (Special Display Corporation (UDC), Ewing, N.J.
organic Light) will focus on specific OLED “We are very happy to participate in this USA for equipment manufacture. OVPD®
applications, such as special lighting project”, says Prof. Michael Heuken, Vice technology is based on an invention by
systems and displays. President R&D at AIXTRON. “OLEDs and Professor Stephen R.
its application for special lighting and
The technological focus will be on novel signage purposes is one of our strategic Forrest et al. at Princeton University, USA,
materials (transport materials, triplet emitter, research targets. which was exclusively licensed to UDC.
redox dopants and matrix AIXTRON and UDC have jointly developed
materials),improved optical systems and on The So-Light project partners share the and qualified OVPD® pre-production
process technologies for small molecule vision that OLEDs will play an important role equipment.
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www.compoundsemiconductor.net January/February 2010
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