Illuminated timepiece display device
US9342050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2013 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Sep 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B17/066
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A watch includes a mechanical timepiece movement that includes at least one timepiece display device including a mobile timepiece component. The component transmits and diffuses light emitted by at least one light energy source included in the display device. The component is formed of a first material which is silica, or quartz, or single crystal quartz, or glass, or sapphire, or ceramic or material partially transparent to visible or ultraviolet wavelengths, or a transparent or translucent at least partially amorphous material, and of at least a second phosphorescent or fluorescent material applied in a thin layer to at least one of surfaces of the component. The light source, which is active or passive, injects light into one portion of the component which conveys and diffuses the light over at least one portion of the component, or throughout an entirety of the component, to make the component visible in the dark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.