Optical filter, spectrometer including the optical filter, and electronic apparatus including the optical filter
US11346716B2 · kind B2 · utility
1Cited by
2References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Nov 6, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/101
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical filter, a spectrometer including the optical filter, and an electronic apparatus including the optical filter are disclosed. The optical filter includes a first reflector including a plurality of first structures that are periodically two-dimensionally arranged, each of the first structures having a ring shape, and a second reflector spaced apart from the first reflector and including a plurality of second structures that are periodically two-dimensionally arranged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.