Development of 2-Lamp System Headlamp Using Halogen Bulb with C-8/C-8 Filament Structure and Multi-Focus Reflector 880274
Growing preferences for high-velocity motor vehicles lead a strong demand for headlamps with higher brightness and visibility. The low beam of conventional two-lamp system headlamps provides drivers poor visibility, since they are equipped with bulbs which have low-beam filament with relatively small power (35-45W) and luminous flux, compared to the high-power filament (65W) used for high-beam, in order to restrain the glare to on-coming drivers.
The new halogen bulb with C-8/C-8 filament structure has such high power as 65/55W and when used in combination with a multi-focus reflector to compose a new 2-lamp system headlamp, it significantly increases the brightness of low-beam without causing much glare to the on-coming vehicles. At the same time, this new 2-lamp system headlamp is able to illuminate a broad area including the zone just in front of the vehicle without sacrificing the visibility of farthest area. Moreover, its novel structure promises us a variety of possible new applications as described hereunder.
Citation: Fujita, T., Ichihara, T., Tanaka, T., and Yamamoto, T., "Development of 2-Lamp System Headlamp Using Halogen Bulb with C-8/C-8 Filament Structure and Multi-Focus Reflector," SAE Technical Paper 880274, 1988, https://doi.org/10.4271/880274. Download Citation