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Advanced Imaging Magazine

Updated: January 12th, 2011 09:49 AM CDT

Core Technology: Light Sources are Going ‘Green’

The illumination sector turns to energy-efficient light sources as part of current imaging solutions
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By Stacey Meacham

As the adoption of more energy-efficient light sources becomes more widespread in the coming years, the resulting energy savings naturally will increase. “LEDS are semiconductor light sources that produce directional light. Thus, the light is delivered precisely where it is needed so much less light is wasted as scattered light, and light pollution is reduced,” said Dr. Berit Wessler, Head of Innovation Management for OSRAM Opto Semiconductors (Regensburg,Germany). “LED light sources already consume much less electricity than most other conventional light sources.”

Light-emitting diodes have considerable potential for increases in brightness and efficiency, and can deliver even more potential energy savings than traditional light sources. Development work is ongoing and light-emitting diodes already are penetrating the general illumination sector.

The Imaging Source (Charlotte, N.C.) announces a new series of cost-effective LED lighting modules, which seamlessly integrate with The Imaging Source USB, FireWire and GigE cameras. Features include: very bright LEDs; direct connection to the camera; all parameters can be set via the shipped software, IC Capture and IC Imaging Control or by custom-built software; compatible with The Imaging Source USB, CCD, FireWire and GigE cameras. All cameras manufactured by The Imaging Source ship with IC Capture and IC Imaging Control.www.theimagingsource.com

New Electronic Technology (NET, Finning, Germany) presents the latest (IDBA-Q) square tilted LED Illumination. Four-bar lights in different sizes (according to type) are arranged in a square. Each line can be tilted at any angle between 0° and 90°, the brightness of each line can be individually adjusted, and they can be supplied in any spectral color and either with or without a diffuser as well as with linear polarizing filters. With this type of lighting all incident lighting- and dark field-applications are possible. Further, due to the fact that the lines can be separately controlled, it is easy to quickly switch between two lines offset from each other at 90° angles. On closer examination of the separate images, you can see on the surfaces the smallest scratches, dust and inhomogenities that are not visible with other types of lighting. One application example: The finest particles on CCD sensors. IDBA-Q LED Illumination series is part of an extensive range of illumination systems for machine vision applications that contain more than 400 models. www.net-gmbh.com 

OSRAM Opto Semiconductors (Regensburg, Germany) has developed the smallest member of the RGB Multi ChipLED family to bring a new dimension of high-definition picture quality to large, full-color video screens. The Multi ChipLED enables high-resolution full-color video screens to offer brilliant colors and high contrast from all viewing angles. The tiny dimensions of this Multi ChipLED allow a very large number of pixels to be accommodated in a small display area. Housed in a black package that is mostly impervious to ambient light, the LED emits light in brilliant colors with excellent contrast. OSRAM’s RGB Multi ChipLEDs are housed in a miniature package with dimensions of only 1.6 mm x 1.6 mm and measure just 0.9 mm high. With the RGB Multi ChipLED, it is possible to have a pixel spacing of only 2 mm, meaning that a great many pixels can be generated in a very small area. www.osram-os.com

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