LED’s open up new possibilities in lighting. Although most of the people are mainly interested in the high efficiency and therefore the energy savings realized with LED’s, mainly optical engineers and lighting designers are fascinated by the very bright but small light source which – at least in theory – opens up completely new possibilities in optical design. But these opportunities do not come for free – on the other side new challenges have to be mastered, mainly in terms of the high brightness of the light source itself, the hemispherical distribution of the direct part of the light, not to forget topics like binning and kitting. But how does the reality really look like ? The author looks into the different aspects of LED lighting, covering the whole value chain from the light source, the LED itself, to design and simulation possibilities of optics, rapid prototyping and tooling of these optics, the production process and finally the assembly of the complete luminaire. By means of concrete examples from real lighting tasks, the author explains the challenges in detail and what has to be done to overcome the problems still existing in professional LED lighting. The speech follows the value chain, starting with the light source itself, showing that it is still not a perfect light source – at least not from the perspective of an optical engineer. Topics like inhomogeneous light emitting surfaces, size, multichip arrangements, so called colour-over-angle aspects and others will be covered. In terms of optical design and simulation, the focus is on lenses and waveguides and the necessary adaptations of your light simulation program to master the new conditions when working with LED’s. When you have finished your optical design, then the real problems start, with either the generation of good prototypes or the design and building of the tools. Based on actual examples some of these challenges will be highlighted, for example rapid prototypes, the data chain from the CAD system of the optical engineer to the numerical control of the machines producing the inserts of the tools etc. Even when the tool is ready for production, the journey has not yet reached it’s end. The production process itself will bring up new problems, changes will have to be made to the tools till finally the parts can be released for serious production. In this chapter the author will explain how your optical design tool can help you to analyze the gap between the optical design and the results achieved with the first parts out of the mould. Another aspect that will be covered during the presentation is the topic of materials for lenses and waveguides. The different demands on these materials will be shown and explained and the conclusion drawn that still the ideal material for LED optics does not exist. There is further research and material development necessary to come to materials which finally will do the job in a better way than today.
Details
Autor Christian Brecher (Hrsg.)
Lieferzeit 3-4 Tage
Gewicht 0.6 kg
Erscheinungsdatum 01.04.2014
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Christian Brecher (Hrsg.)

Aachen Polymer Optics Days 2014

ISBN: 978-3-86359-204-2
49,00 €
inkl. 7% MwSt.

Kurzbeschreibung

LED’s open up new possibilities in lighting. Although most of the people are mainly interested in the high efficiency and therefore the energy savings realized with LED’s, mainly optical engineers and lighting designers are fascinated by the very bright but small light source which – at least in theory – opens up completely new possibilities in optical design. But these opportunities do not come for free – on the other side new challenges have to be mastered, mainly in terms of the high brightness of the light source itself, the hemispherical distribution of the direct part of the light, not to forget topics like binning and kitting.
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