Open AccessMeasurement of colour coordinates of LEDs used in the automotive exterior lighting
Author(s) -
Jan Látal,
Patrik Hanulak,
Jakub Kolář,
Zdenek Wilcek,
Tomáš Stratil,
Filip Sarlej
Publication year - 2021
Publication title -
international journal of power electronics and drive systems/international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
eISSN - 2722-2578
pISSN - 2722-256X
DOI - 10.11591/ijece.v11i3.pp2711-2724
Subject(s) - automotive industry , light emitting diode , datasheet , color temperature , led lamp , diode , computer science , automotive engineering , optics , optoelectronics , engineering , materials science , electronic engineering , physics , aerospace engineering
Article deals with dichromatic white light-emitting diode (LED’s) color coordinates used in automotive exterior lighting. This article also describes basic white automotive LED functionality and basic physical processes that create white light of these LEDs. It focuses on measuring color coordinates of white automotive LEDs with different temperature of LED and how the LED’s color depends on LED’s temperature. The article is comparing very important datasheet information of LED producers and values measured in the laboratory at university. The article contains statistical results of measurements and graphical representation of measured values and declared color bins which are very important for producers of headlamps for automotive companies.