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Badpuppy · 10-29-2021, 08:28 AM

"Focus" is achieved when all light rays are reflected forward in parallel. This means the pattern on the wall will be 8 inches (20 cm) in diameter, same as the reflector rim, at any distance. Remove the lens to get a circular pattern, the fluted lens simply spreads the beam horizontally. There will also be ambient light from the rays that do not strike the reflector.

The reflectors may need polishing. Service bulletin recommends wiping the silver plate with carbon black (powdered carbon) if tarnished. Silver polish may also be used.

10-29-2021, 08:28 AM	#13
Badpuppy Senior Member Join Date: Dec 2017 Location: Guthrie, OK Posts: 1,150	Re: Mounting headlight bulbs "Focus" is achieved when all light rays are reflected forward in parallel. This means the pattern on the wall will be 8 inches (20 cm) in diameter, same as the reflector rim, at any distance. Remove the lens to get a circular pattern, the fluted lens simply spreads the beam horizontally. There will also be ambient light from the rays that do not strike the reflector. The reflectors may need polishing. Service bulletin recommends wiping the silver plate with carbon black (powdered carbon) if tarnished. Silver polish may also be used.