Apparatus for transmitting optical information through a viewer's headset
US4866229A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Apr 7, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0198
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical informations or data are transmitted by an essentially stationary transmitter and received by a mobile receiver attached to an operator's helmet or headset. A receiving lens and an optical wave guide lead to the operator's eye for the receiver. The optical transmitter is embodied as a projector arranged to be tiltable about its vertical axis and about a horizontal axis extending perpendicularly to the projected light beam direction. The projector further includes a tracking guide sensor and the receiver includes a reflector for establishing an optical guidance coupling between the projector and the receiver so that the projector may be appropriately pivoted to track the moving receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.