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Old 08-22-2012, 02:31 PM
paperplane94 paperplane94 is offline
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Location: Los Angeles, CA
Join Date: Jan 2012
Posts: 933
Mein Auto: 1989 525i M20B25
Originally Posted by SwissCheeseHead View Post
I just skimmed through the article, but I'm pretty sure this is more relevant to the standard halogen housing where there is a reflector behind the bulb that reflects the light outwards. This is much different than the US ellipsoid housing where the lens in front of the bulb is what controls the light. The standard halogen bulb with an "HID conversion kit" scatters light everywhere, blinding oncoming traffic. This is not what anyone wants. The ellipsoid lens however provides a cutoff where the light would not blind oncoming traffic. This is what makes an HID conversion more plausible and safe for our headlights. I do not want the blue look. I want the daylight look (pure white), not the dreadful light up nothing yellow that came stock with our headlights. Lighting is my concern and being able to see more than 10 feet in front of me will make it safer for me and other drivers.
I think you are right...
Freeforms don't have any cutoff, thety are just aimed down to regulation.

The US ellipsoids have an actual piece of metal in the housing to cutoff the light at a certain level.
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