Just if not more important is the lens design. A proper lens will
focus the light on the roadway ahead with a top cut off that leans up
on the right to illuminate road side signs while not blinding
oncoming traffic. The dispersal pattern should light the road both
near and far. Have a close look at some of the modern lighting
units. Very complex reflector and lens patterns moulded into the
unit. Also equals big bucks should you break one!
An oft overlooked aspect of lighting is the fact that the reflector
is an
integral part of the light projector system that focuses the light
produced but
the filament onto the road ahead of the vehicle. Once this reflector
looses
its lustre or gets discoloured the light projection pattern becomes
more random
and the headlamp becomes merely a bright marker light and no good at
lighting
the roadway ahead of you.
=== This list supported in part by The Vintage Triumph Register
=== http://www.vtr.org
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