Virtual reality system with an optical position-sensing facility
US5844674A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0304
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A virtual reality system permanently connected with a device to be worn by a user is disclosed which has an optical position-sensing facility that contains at least one radiation source defining a fixed reference point in space and an optical receiving system permanently connected with the device. The optical receiving system includes three radiation detectors, whose optical axes are parallel to each other. The first radiation detector has a reception pattern which shows a rising/falling sensitivity characteristic in a first angular range. The second radiation detector has a reception pattern which shows a rising/falling sensitivity characteristic in a second angular range. The third radiation detector has a reception pattern which shows a slowly varying sensitivity characteristic within at least the first and second angular ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.