Sensor
US6946650B2 · kind B2 · utility
6Cited by
63References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2003 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Nov 8, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G2205/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The relative position of two members is determined based upon a detected relative intensities of first and second colors of light. The intensity balance associated with relative occlusion of first and second color filter portions on one member by a mask on the other member. An exemplary use is in rotational position sensing within a limited rotation range. With a given compliance between the two members, the position sensing can be used as a proxy for torque sensing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.