Remote control system for locking/unlocking the doors of motor vehicles with aspherical toroidal lens containing multiple photodetectors
US5191324A · kind A · utility
5Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Feb 5, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A remote control system, in particular for locking and unlocking the doors of a motor vehicle, the system being of the type comprising a portable transmitter including means constituting a light source suitable for generating an encoded light flux, and a fixed receiver including photosensitive means designed to receive the light flux and associated with treatment means designed to decode it, wherein the photosensitive means of the receiver comprise a lens having a toroidal aspherical outside surface, which lens is associated with a plurality of photocells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.