Patent · US Active

Projecting a static light pattern or symbol

US12013099B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

LUMILEDS LLC · US

Inventors

Gregoire Denis · San Jose, US
Rohit Modi · Waltham, US
Benno Spinger · Aachen, DE
Niels Jeroen VAN DER VEEN · Aachen, DE
Parijat Deb · San Jose, US

Key dates

Filing date	Nov 21, 2022
Grant date	Jun 18, 2024
Priority date	—
Expiry date	Nov 21, 2042

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21Y2115/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light-emitting diode (LED) can have a light-emitting surface that can emit emitted light. A filter, disposed on the light-emitting surface, can be at least partially transmissive in a first area and at least partially reflective in a second area. The first area can direct at least some of the emitted light through the filter to form shaped light that extends over an area corresponding to a shape of a static light pattern. The second area can reflect at least some of the emitted light into the LED through the light-emitting surface. A lens can bring the shaped light to a focus that has the shape of the static light pattern. To increase a contrast of the focus, an absorber, disposed on the second area of the filter, can absorb emitted light that is transmitted through the second area of the filter.

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