Security device with a full length lens
US9410847B2 · kind B2 · utility
3Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Dec 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/193
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A security device is disclosed, wherein the security device includes a Fresnel lens covering the entire face of the device, a housing, and a pyroelectric detector. The center portion of the Fresnel lens, which contains the Fresnel lens elements, is molded flat, its edges are molded in the final installed form, and its edges contain appendages that secure the lens on the device so there are no gaps between the lens and the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.