Photochromic filter-based imaging system
US10088613B1 · kind B1 · utility
2Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 5, 2016 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Jun 29, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/741
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system for sensing light in an area of high optical contrast is disclosed. In some implementations, the imaging system is for monitoring a welding operation, whereby a photochromic filter is used to reduce the intensity of the light observed from the welding arc. The imaging system includes a light source whereby light from the light source activates the photochromic filter. Thus, the opacity of the photochromic filter depends on the intensity of the light from the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.