Results 161 to 170 of about 262,950 (171)
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39.2: Polarization Conversion System Using a Polymer Polarization Grating
SID Symposium Digest of Technical Papers, 2011Abstract We describe a new Polarization Conversion System (PCS) concept, particularly well suited for pico‐projectors, employing a polymer polarization grating thin‐film, fly‐eye lens, and louvered halfwave plate. We demonstrate improved polarization‐conversion in the PG‐based PCS, leading to enhanced brightness (12%) and color ...
Eunseong Seo +8 more
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Asymmetric Polarization Conversion in Polarization Holograms with Surface Relief
Japanese Journal of Applied Physics, 2008We have developed holographic gratings that enable the asymmetric polarization conversion between ±1-order diffraction beams. The holographic gratings are formed by polarization holography in a poly[(methyl methacrylate)-co-(disperse yellow 7 methacrylate)] film and show both anisotropic phase and surface modulations.
Akira Emoto +2 more
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Efficient and monolithic polarization conversion system based on a polarization grating
Applied Optics, 2012We introduce a new polarization conversion system (PCS) based on a liquid-crystal polarization grating (PG) and louvered wave plate. A simple arrangement of these elements laminated between two microlens arrays results in a compact and monolithic element, with the ability to nearly completely convert unpolarized input into linearly polarized output ...
Jihwan, Kim +4 more
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Conversion of keratometer readings to polar values
Journal of Cataract and Refractive Surgery, 1990Corneal astigmatism is a complex entity that has direction and magnitude. This study reports a new method to describe corneal astigmatism within the with- and against-the-rule concept. Each net astigmatism of the maximal power M in the meridian alpha may be divided into two dioptric components: a with-the-rule astigmatism projected on the 90-degree ...
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Polarization conversion metasurface enabled broadband circularly polarized patch antenna
Microwave and Optical Technology LettersAbstractAssembling polarization conversion metasurface (PCM) and a simple patch antenna to realize a circularly polarized (CP) antenna with over 10% fractional bandwidth (BW) is a challenging task. A kind of PCM composed of S‐ring and grating structure that converts linearly polarized (LP) wave into CP wave in a broadband frequency from 8.74 to 12 GHz ...
Lijun Ding +9 more
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Frequency Reconfigurable Polarization Conversion Metasurface
2022 International Conference on IT and Industrial Technologies (ICIT), 2022Ahsaan Gul Hassan +4 more
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Rectangular-Polar Conversion Tables.
Journal of the Royal Statistical Society. Series A (General), 1956K. D. Tocher, E. H. Neville
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Cross-Polarization Carpet Cloaking Based on Polarization Conversion Metasurfaces
IEEE Sensors Journal, 2022Tianqi Zhao +7 more
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Design of polarization conversion metasurface for arbitrary polarized wave
Optics Communications, 2023Baoqin Lin +5 more
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