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Headlamp Developments with DMC Reflectors Including Homofocal Arrangements
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English
Abstract
This paper reviews headlamp developments that have taken place in Europe and particularly in the UK. It outlines the changes which occoured due to the requirement for greater styling and aerodynamic design freedom and resulted in the introduction of headlamps having a rectangular frontal aspect. These headlamp design changes dictated a move away from the twin transverse filament approach of the SAE beam distribution to the more controllable shielded axial filament system used to achieve the ECE beam pattern. The relevence of the UK experience is discussed in view of the changes that have been introduced to permit replaceable bulb headlamps in the USA.
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Citation
Spencer, C., "Headlamp Developments with DMC Reflectors Including Homofocal Arrangements," SAE Technical Paper 840041, 1984, https://doi.org/10.4271/840041.Also In
References
- Olson P Sivak M Improved low beam photometries Final report March 1983 The university of Michegan Transportation Research Institute
- Donahue R J Joseph B W. Computer synthezied filament images from reflectors and through lens elements for lamp design and evaluation Applied optics 14 10 October 1975