Filtering devices and filtering methods
US10209515B2 · kind B2 · utility
0Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2015 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Apr 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to various embodiments, a filtering device may be provided. The filtering device may include: an ultraviolet light sensor configured to sense ultraviolet light; an infra-red light sensor configured to sense infra-red light; a visible light sensor configured to sense visible light; a filter selection circuit configured to select a filter based on at least two outputs selected from a list of outputs consisting of: an output of the ultraviolet light sensor; an output of the infra-red light sensor; and an output of the visible light sensor; and a filtering circuit configured to apply the selected filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.