Electromagnetic wave focusing device and optical apparatus including the same
US10317696B2 · kind B2 · utility
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25Claims
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Key dates
| Filing date | Dec 15, 2016 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Dec 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Electromagnetic wave focusing devices and optical apparatuses including the same are provided. An electromagnetic wave focusing device may include a plurality of material members located at different distances from a reference point. The intervals and/or widths of the material members may vary with distance from the reference point. For example, the intervals and/or widths of the material members may increase or decrease with distance from the reference point. The intervals and/or widths of the material members may be controlled to satisfy a spatial coherence condition with the electromagnetic wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.