26 June 2017 High-power LED light sources for optical measurement systems operated in continuous and overdriven pulsed modes
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Abstract
The rapid progress of light emitting diode (LED) technology has recently resulted in the availability of high power devices with unprecedented light emission intensities comparable to those of visible laser light sources. On this basis two versatile devices have been developed, constructed and tested.

The first one is a high-power, single-LED illuminator equipped with exchangeable projection lenses providing a homogenous light spot of defined diameter. The second device is a multi-LED illuminator array consisting of a number of high-power LEDs, each integrated with a separate collimating lens. These devices can emit R, G, CG, B, UV or white light and can be operated in pulsed or continuous wave (CW) mode. Using an external trigger signal they can be easily synchronized with cameras or other devices. The mode of operation and all parameters can be controlled by software. Various experiments have shown that these devices have become a versatile and competitive alternative to laser and xenon lamp based light sources.

The principle, design, achieved performances and application examples are given in this paper.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bolesław Stasicki, Andreas Schröder, Fritz Boden, Krzysztof Ludwikowski, "High-power LED light sources for optical measurement systems operated in continuous and overdriven pulsed modes", Proc. SPIE 10329, Optical Measurement Systems for Industrial Inspection X, 103292J (26 June 2017); doi: 10.1117/12.2270304; https://doi.org/10.1117/12.2270304
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