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SAE J2739 (FEB2011)

Absorptive and Interference Coatings Applied on Replaceable Headlamp Bulbs
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SAE J2739 (FEB2011)

Absorptive and Interference Coatings Applied on Replaceable Headlamp Bulbs

PUBLISH DATE 2011
PAGES 29
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This report investigates the use of single and multi-layer coatings on replaceable headlamp bulbs and how such coatings can affect the performance of bulbs in terms of light scattering, which can contribute to glare, and spectral separation in headlamps. Tests were developed to investigate the effects of absorptive and interference (multi-layer) coatings on bulbs, and on bulbs in headlamp systems. These tests provide validation for a proposed bulb color separation test, which establishes limits for spectral separation within the boundaries of SAE J578 white color requirements. The bulb color separation test provides a definitive selection criterion to identify bulbs that cause excessive light scatter (glare) and/or spectral separation in an optical system.
SDO SAE: SAE International
Document Number J2739
Publication Date Feb. 24, 2011
Language en - English
Page Count 29
Revision Level 201102
Supercedes
Committee
Publish Date Document Id Type View
Feb. 24, 2011 J2739_201102 Revision
Jan. 30, 2007 J2739_200701 Revision