Coordinate position of moving light source by using separated groups of detectors each group having an iris
US6014129A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1996 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Sep 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03542
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pair of detecting stations A.sub.i and A.sub.-i on a plane H extends along an axis X. Each of the detecting stations is provided with an iris member and a divided light receiving section. Received light outputs at each of the light receiving elements are defined as R.sub.i, L.sub.i, R.sub.-i, and L.sub.-i, and the following equation is calculated to enable a coordinate (x.sub.0, z.sub.0) of the moving light source to be attained by a simple calculation: S.sub.i =(R.sub.i -L.sub.i)/(R.sub.i +L.sub.i)+(R.sub.-i -L.sub.-i)/(R.sub.-i +L.sub.-i); T.sub.i =(R.sub.i -L.sub.i)/(R.sub.i +L.sub.i)-(R.sub.-i -L.sub.-i)/(R.sub.-i +L.sub.-i).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.