Light filter and spectrometer including the light filter
US10571332B2 · kind B2 · utility
4Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2018 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Mar 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2813
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light filter includes a plurality of spectrum modulation portions, each having a different thicknesses or a different mixing ratio of materials thereof. Each of the plurality of spectrum modulation portions has a different transmittance spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.