Light source and optical article including viscoelastic lightguide disposed on a substrate
US10228507B2 · kind B2 · utility
4Cited by
155References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2017 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Apr 13, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is an optical device having a light source and a viscoelastic lightguide. Light from the light source enters the viscoelastic lightguide and is transported within the lightguide by total internal reflection. The viscoelastic lightguide may comprise a pressure sensitive adhesive. The optical device may be used in a variety of constructions wherein the device emits light being transported within the viscoelastic lightguide. Constructions include those used for signs, markings, illumination devices, display devices, keypad assemblies and tail light assemblies for vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.