2020
DOI: 10.1002/adom.202000170
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Reflective Polarization Volume Lens with Small f‐Number and Large Diffraction Angle

Abstract: Planar optics based on patterned cholesteric liquid crystals (CLCs) has attracted increasing attention owing to the self‐organized helical structure and the ability to create arbitrary reflected wavefront through spatial orientation control. However, because of the subwavelength‐orientation requirement, it is challenging for liquid crystal lens to achieve a low f‐number (f/#) and large deflection angle simultaneously. Furthermore, with the increasing demand for compact size in novel optical systems, reflective… Show more

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Cited by 66 publications
(49 citation statements)
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“…From Figure 3 C, the FOV of this system is directly related to the numerical aperture (NA) of the lens system. With rapid technology development and urgent needs from industry, numerous novel flat lenses with a wide acceptance angle and large aperture in both on-axis and off-axis types have emerged ( Khorasaninejad et al., 2016 ; Yin et al., 2020a ). Based on the HOE with a large NA, NVIDIA demonstrated an 85° × 78° monocular FOV Maxwellian view system ( Kim et al., 2019 ).…”
Section: Ar: Field Of Viewmentioning
confidence: 99%
“…From Figure 3 C, the FOV of this system is directly related to the numerical aperture (NA) of the lens system. With rapid technology development and urgent needs from industry, numerous novel flat lenses with a wide acceptance angle and large aperture in both on-axis and off-axis types have emerged ( Khorasaninejad et al., 2016 ; Yin et al., 2020a ). Based on the HOE with a large NA, NVIDIA demonstrated an 85° × 78° monocular FOV Maxwellian view system ( Kim et al., 2019 ).…”
Section: Ar: Field Of Viewmentioning
confidence: 99%
“…Our proposed system uses a polarization-dependent lens coupler fabricated through cholesteric liquid crystal (CLC) polarization holography. 18,19 Like traditional CLC, the CLC lens coupler only responds to one circular polarization and transmits the other. The patterning method of CLC is photoalignment polarization holography that uses two beams with left-handed circular polarization (LCP) and right-handed circular polarization (RCP) to form the spatially varying linear polarization patterns.…”
Section: Introductionmentioning
confidence: 99%
“…LC molecules are readily responsive to external stimuli such as electric, magnetic fields, and surface interaction, contributing to their rheological behaviors and anisotropic physical properties [ 2 , 3 ]. Their interesting features allow them to be used in numerous applications such as electro-optical components, responsive sensors, and biological applications [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. For example, LC molecules can be used in several electronic products such as color filters [ 4 ], smart glasses [ 5 ], and display applications [ 6 , 7 ] owing to their susceptibility to electric fields.…”
Section: Introductionmentioning
confidence: 99%
“…LC molecules are also studied for utilization as biosensors to detect the presence of proteins [ 12 , 13 ], surfactants [ 14 , 15 ], lipids [ 16 , 17 ], bacteria and virus [ 18 , 19 ]. Control of the alignment behaviors of LC molecules is essential in diverse scientific and technical fields [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. LC alignment methods related to controlling the aligning abilities of LC molecules, such as pretilt angle and anchoring strength, have received attention by other researchers [ 24 , 25 , 26 , 27 ].…”
Section: Introductionmentioning
confidence: 99%