26 March 2015 Multi-imaging characteristics of electrically controlled on-axis holographic polymer-dispersed liquid-crystal Fresnel lens
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Abstract
This paper reports on the investigation of the electrically controlled multifocus, multi-imaging characteristics of an on-axis holographic polymer-dispersed liquid-crystal (H-PDLC) Fresnel lens. The Fresnel lens is examined within a PDLC cell through the analysis of interference fringes generated by on-axis plane and spherical waves. Experiments are conducted to investigate the multifocus and multi-imaging phenomena of the H-PDLC Fresnel lens, and a corresponding geometrical optical analysis is also provided. It is then demonstrated that the H-PDLC Fresnel lens is a plane-surface diffractive optical device which modulates the phase of incident light through a periodic change of refractive index and forms multiple symmetrical images. Its diffraction properties, which can be controlled electrically, have further potential applications in this field.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xiaopeng Wei, Jihong Zheng, Yanan Wang, Zheng Gao, Lijia Sun, Yang Lu, Songlin Zhuang, "Multi-imaging characteristics of electrically controlled on-axis holographic polymer-dispersed liquid-crystal Fresnel lens," Optical Engineering 54(3), 037110 (26 March 2015). https://doi.org/10.1117/1.OE.54.3.037110 . Submission:
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