Patent · US Active

Application of electrochromic polymers as color and opacity light filters

US10527252B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Nicholas V. Friszell · Oxford, US
Gregory M. Castillo · Windsor, CA

Key dates

Filing date	Feb 23, 2017
Grant date	Jan 7, 2020
Priority date	—
Expiry date	Nov 30, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/15165
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A vehicle lighting system includes a light source; a first lighting subsystem includes a first light path having a first end positioned to receive light from the light source and to deliver the light to a second end of the first light path; and a first electrochromic filter disposed in the first light path; and a second lighting subsystem includes a second light path having a first end positioned to receive light from the light source and to deliver the light to a second end of the second light path; and a second electrochromic filter disposed in the second light path, wherein the first lighting subsystem provides a first lighting function, and wherein the second lighting subsystem provides a second lighting function.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.