Holographic parking assistance device
US5406395A · kind A · utility
543Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Nov 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical parking alignment system that includes at least one projector located on a vehicle for projecting a respective image forwardly of the vehicle, whereby alignment of the vehicle is indicated when each respective image is in focus on a screen disposed in front of the vehicle. The projector cam comprise a transparency and an imaging lens, or a hologram and a narrowband light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.