Detector with coated lens assembly
US7026619B2 · kind B2 · utility
33Cited by
13References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2004 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Sep 30, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/0806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spark detector lens assembly is adapted to block energy from static electric discharges. The lens assembly includes a housing which receives a lens. The lens is adapted to pass infrared frequency energy therethrough. A conductive coating is disposed on one side of said lens, which is effective to block radio frequency energy but pass infrared frequency energy. The conductive coating may be electrically connected to an electrical ground path. The lens assembly is especially effective for preventing false alarms by shielding a spark detector from radio frequency energy radiated by static electric discharges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.