Optical switch keyboard
US9846492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2016 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Aug 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/969
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical switch keyboard includes a circuit board and plural keys. The circuit board includes plural light emitters and plural light receivers. Each key is aligned with the corresponding light emitter and the corresponding light receiver. Moreover, each key includes a triggering element, a first reflective element and a second reflective element. When the triggering element is triggered by the user, a sensing light emitted by the light emitter is reflected to the second reflective element by the first reflective element. The sensing light is further reflected to the light receiver by the second reflective element. Consequently, the circuit board generates a key switch signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.