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25 February 2020 Advanced optical characterization of automotive interior materials for premium visual quality
S. Reichel, K. Blankenbach, K. Koop, F. Najiba, M. Ulrich, F. Hertlein
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Proceedings Volume 11302, Light-Emitting Devices, Materials, and Applications XXIV; 113021V (2020) https://doi.org/10.1117/12.2542777
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
Future cars with (semi-) autonomous driving enable more use of interior lighting with special visual effects. This deals as well with interior materials – like plastics, wood, metals - which are illuminated or backlighted by RGB LEDs. We performed 3D BRDF measurements from a luminance imager and compare them to traditional goniophotometers. Perception test with 37 subjects for transflective materials show that there is a narrow width of backlight intensity for “pleasant” (not bothering) intensity. Such fundamental optical examinations enable special visual effects for future vehicles.
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S. Reichel, K. Blankenbach, K. Koop, F. Najiba, M. Ulrich, and F. Hertlein "Advanced optical characterization of automotive interior materials for premium visual quality", Proc. SPIE 11302, Light-Emitting Devices, Materials, and Applications XXIV, 113021V (25 February 2020); https://doi.org/10.1117/12.2542777
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KEYWORDS
Light scattering
Goniophotometry
Scattering
Visualization
Light sources and illumination
Reflection
Bidirectional reflectance transmission function
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