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29 September 2023 Dynamic LED beam shaping by using liquid crystals
Tigran Galstian, Armen Zohrabyan, Vladimir Presniakov, Aram Bagramyan
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Proceedings Volume PC12658, Liquid Crystals XXVII; PC126580B (2023) https://doi.org/10.1117/12.2676798
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States
Abstract
The adoption of light emitting diodes by lighting industry is inevitable. They provide many advantages, but one of them is very interesting from the point of view of using liquid crystals: it is the small etendue of these sources. Rather well collimated and small diameter white light beams can be obtained. Here is where liquid crystal lenses can have an important application. We report the development of an optical element that can dynamically stretch broad band beams in one or in orthogonal or in both directions. Thus, we can start from a narrow circular beam and obtain a rectangular shaped beam to fit perfectly the size and the exposure requirements in home, office, architectural or automobile applications. The basics of its operation as well as of its optical performance data will be reported.
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Tigran Galstian, Armen Zohrabyan, Vladimir Presniakov, and Aram Bagramyan "Dynamic LED beam shaping by using liquid crystals", Proc. SPIE PC12658, Liquid Crystals XXVII, PC126580B (29 September 2023); https://doi.org/10.1117/12.2676798
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KEYWORDS
Liquid crystals
Light emitting diodes
Beam shaping
Beam diameter
Collimation
Industry
Lenses
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