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Development of Controlled Surface Reflector for Headlamps
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English
Abstract
This report describes the development of an advanced technology headlamp reflector which is capable of producing a sharp cut-off line. Similar attempts in the past have suffered from various drawbacks, but through the use of a mathematically derived set of equations describing a controlled curved surface, we were able to greatly increase performance specifications. Prototype headlamp tests showed improved distant visibility, a major problem in existing designs. Furthermore, by superimposing a ripple pattern onto the reflector surface, we were able to attain sufficient light diffusion to enable the reflector to be used within headlamps having highly slanted outer lenses.
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Topic
Citation
Nino, N. and Ishida, H., "Development of Controlled Surface Reflector for Headlamps," SAE Technical Paper 920813, 1992, https://doi.org/10.4271/920813.Also In
References
- Thomas, W.S. Hector, F. Guy, D. “Improvements in Low Beam Lighting Achieved by Complex Surface Reflectors” SAE Tech. Paper No. 870059 1987
- Rainer, N. “Improved Low Beam by Use of Segmented Headlamp Systems” SAE Tech. Paper No. 870063 1987
- Rainer, N. “High Efficiency Headlamp Systems with Variable Focus” SAE Tech. Paper No. 890687 1989
- Jean-Paul, R. Guy, D. Alain, L. “Complex Surface Reflector Technology Foglamp Application” SAE Tech. Paper No. 910825 1991