Device and method for generating vortex beam generation |
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| 申请号 | US15481578 | 申请日 | 2017-04-07 | 公开(公告)号 | US10101505B2 | 公开(公告)日 | 2018-10-16 |
| 申请人 | HUAWEI TECHNOLOGIES CO., LTD.; | 发明人 | Jian Wang; Jing Du; Jifang He; | ||||
| 摘要 | A vortex beam device includes: a metal reflector, a low refractive index layer, and multiple elliptical dielectric elements. The low refractive index layer located on the metal reflector. The multiple elliptical dielectric elements are embedded in the low refractive index layer and arranged in an array, major axes of the multiple elliptical dielectric elements are parallel or coincident. The multiple elliptical dielectric elements have a same thickness. A thickness of the low refractive index layer is greater than a thickness of the elliptical dielectric element. An outer surface of each elliptical dielectric element is flush with an outer surface of the low refractive index layer. A refractive index of the low refractive index layer is less than a refractive index of the elliptical dielectric element. | ||||||
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| 说明书全文 | |||||||
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