From Event: SPIE Organic Photonics + Electronics, 2015
We present new lenses – waveplate lenses created in liquid crystal materials. Waveplate lenses allowed focusing and defocusing laser beam depending on the sign of the circularity of laser beam polarization. Using an electrically-switchable liquid-crystal half-wave retarder we realized switching between focused and defocused beams by the waveplate lens. A combination of two such lenses allowed the collimation of a laser beam as well as the change of focal length of optical system. Lenses of varied size and focal length are presented.
Nelson V. Tabiryan, Svetlana V. Serak, David E. Roberts, Diane M. Steeves, and Brian R. Kimball, "Thin waveplate lenses: new generation in optics," Proc. SPIE 9565, Liquid Crystals XIX, 956512 (Presented at SPIE Organic Photonics + Electronics: August 10, 2015; Published: 8 October 2015); https://doi.org/10.1117/12.2190295.
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