Patent · US Active

Exterior aircraft lighting device

US9846112B2 · kind B2 · utility

3Cited by

3References

15Claims

0Family size

Assignee

Goodrich Lighting Systems, Inc. · DE

Inventors

Anil Kumar Jha · Lippstadt, DE
Andre Hessling-Von Heimendahl · Koblenz, DE
Christian Schoen · Dortmund, DE

Key dates

Filing date	May 19, 2016
Grant date	Dec 19, 2017
Priority date	—
Expiry date	Jun 10, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/40
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An exterior aircraft lighting device comprises: at least one light source; an optical element having a light entry side facing the at least one light source and a light exit side and being configured for modifying light emitted by the at least one light source; at least one photo detector, which is configured and arranged for detecting a portion of the light emitted by the at least one light source, which is reflected by the light entry side of the at least one optical element, the photo detector providing a detection value, representing the amount of detected light; and a control and evaluation unit which is configured for evaluating the state of wear of the at least one light source based on the detection value provided by the at least one photo detector.

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