Optical-effect touchpad on a steering wheel for finger detection
US11110799B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 3, 2018 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Sep 14, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2360/782
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for detecting command gestures made by a finger of a driver of a motor vehicle, the system including an interface pad, a light source that emits in the infrared toward the pad, an imaging sensor, for capturing images steered by the pad away from the driver, with a base frame and a movable plate, an optical zone of interest seen by the imaging sensor being defined at the interface between the base frame and the plate, the pad including an elastic deformable seal interposed between the base frame and the movable plate, the seal being absorbent at the optical wavelengths of interest, the pad including a reflective strip behind the seal from the point of view of the camera, so that the seal forms a zone that appears dim to the camera, the size of the dim zone depending on the pressure exerted on the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.