Smart lighting using a liquid crystal modulator

Alexandre Baril; Simon Thibault; Tigran Galstian

doi:10.1117/12.2276205

29 August 2017 Smart lighting using a liquid crystal modulator

Alexandre Baril, Simon Thibault, Tigran Galstian

Proceedings Volume 10375, Current Developments in Lens Design and Optical Engineering XVIII; 103750O (2017) https://doi.org/10.1117/12.2276205
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

Now that LEDs have massively invaded the illumination market, a clear trend has emerged for more efficient and targeted lighting. The project described here is at the leading edge of the trend and aims at developing an evaluation board to test smart lighting applications. This is made possible thanks to a new liquid crystal light modulator recently developed for broadening LED light beams. The modulator is controlled by electrical signals and is characterized by a linear working zone. This feature allows the implementation of a closed loop control with a sensor feedback. This project shows that the use of computer vision is a promising opportunity for cheap closed loop control. The developed evaluation board integrates the liquid crystal modulator, a webcam, a LED light source and all the required electronics to implement a closed loop control with a computer vision algorithm.

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Citation Download Citation

Alexandre Baril, Simon Thibault, and Tigran Galstian "Smart lighting using a liquid crystal modulator", Proc. SPIE 10375, Current Developments in Lens Design and Optical Engineering XVIII, 103750O (29 August 2017); https://doi.org/10.1117/12.2276205

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