Illumination structure for uniform illumination of keys
US9971084B2 · kind B2 · utility
4Cited by
219References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2016 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Aug 20, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/0622
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Described is an illumination structure for a key of a keyboard. The illumination structure is used to uniformly illuminate the key and any glyphs that are present on the key. The illumination structure includes a light guide having various features that increase total internal reflection and also illuminate the glyphs of the key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.