Dual technology intruder detection system with modular optics
US4746906A · kind A · utility
23Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Jun 30, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/01
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Disclosed herein is a dual technology intruder detection system which features a modular optical system by which the field of protection of one subsystem can be changed relative to the field of view of the other by merely altering the orientation of one optical module relative to another. Such modular optical system includes a multifaceted reflector having two sets of planar reflective facets. Depending on the orientation of such multifaceted reflector relative to a separate spherical reflector, two different fields of view are provided, whereby false alarm-producing can be avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.