Radiant Imaging Releases New LED Imaging Sphere

FlashlightNews.org - 08/01/2006

New Imaging Sphere Enables Rapid, Economical Measurement of LED Luminous Intensity

Radiant Imaging's IS-LI

DUVALL, Wa. - Radiant Imaging’s new IS-LI is the first system to enable rapid, comprehensive measurement of the luminous intensity of LEDs and other small light sources. Based on patented integrating sphere technology, the IS-LI acquires luminous intensity (brightness as a function of angle) data over an entire 2p steradian in a single measurement, taking just seconds or less.

The system delivers up to 16 bit luminance measurements, with an angular resolution of 1% or better. Alternately, the IS LI can analyze color versus emission angle, a particularly important performance metric for “white light” LEDs. Previously, obtaining these precision measurements required goniometric tools; but, with no moving parts, the new IS-LI is orders of magnitude faster than traditional methods, and is also substantially more economical. This combination of high precision, high resolution and speed enables real-time, production-line QC of LEDs for the first time, and makes the IS LI ideal for R&D purposes as well.

The IS-LI system consists of a 20" (550 mm) diameter, hemispherical measurement chamber, mated with a CCD-based imaging photometer or colorimeter. The latter is selected from Radiant Imaging’s broad product line, which includes 10, 12, 14 and 16 bit dynamic range models, at several different spatial resolutions. System software supports automated and/or customized measurements, as well as data analysis and display functions. Data can be displayed as isometric plots, cross-sectional graphs, radar plots, bit maps and color graphs.

About Radiant Imaging

Radiant Imaging, Inc., founded in 1981, is the worldwide leader in imaging systems for light and color measurement, and illumination engineering tools and services. Radiant Imaging’s technologies are focused on providing lighting and display system manufacturers with enhanced design capabilities, greater product development efficiency, improved manufacturing productivity and increased competitive effectiveness in the world marketplace.

Radiant Imaging’s three major product areas are the ProMetric® light and color measurement systems, Radiant Sources® light source characterization systems and source data, and Application Engineering Services to support development of application-specific solutions incorporating ProMetric® technology.

For more information, visit Radiant Imaging at www.radiantimaging.com.