Stylus with light energy harvesting
US11126278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2016 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Jan 28, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A stylus includes a housing extending over a length and including a first end opposite a second end, a circuit configured to generate a signal, a power source configured to power generation of the signal, a writing tip extending from the first end of the housing, and a light harvesting unit configured to generate energy. The light harvesting unit includes a transparent window integral with the housing and positioned proximal to the writing tip, a panel of solar cells configured to absorb light received through the transparent window, optical fibers configured to transmit light from the window toward the panel of solar cells and an optical diffuser configured to diffuse the light transmitted by the optical fibers over a spatial extent of the panel of solar cells. The energy generated by the light harvesting unit is received by the circuit and configured to recharge the power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.