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Old 01-12-2014, 11:21 AM   #50 (permalink)
topcat
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Quote:
Originally Posted by mcrews View Post
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Ok, I posted facts.
See close up of Failed HID in a halogen lamp.
PLEASE look at the hand written numbers....PLEASE do your own math......
Look, IF you are right and there is NOT 10x more light from a regular HID bulb, but only 3 times, then the halogen lamp is able to MULTIPLE light! REALLY?????
Bt just to humor you....the 3x light is a fail. Period.

And if the shield on the halogen projector cuts off the 3x light.....then why use the HID?

Look up and do some research. VERY FEW companies have the equipment to measure light. I actually spoke with the testing company that generated that chart. AND I CAN GUARENTEE you that your Honda dealer does not. PERIOD.

But the focus of the article is hid fail in halogen lamps.
The rest is just common sense.
mcrew, you posted "facts" on one example of a misaligned HID in a reflector housing. It's not even worth analysing that garbage.

What is worth analysing is the HID arc diagram compared with the tungsten. Simple optics shows that that HID arc in a projector housing with a shield will put 3x more light out below the shield cutoff, and bugger all above the cut off. What more is there to say?

The best summary I can give of this is:
Only use HID in a projector housing which has a cut off shield.

It's kind of obvious that you have to:
1) Make sure the arc sits in the correct place
2) Make sure the lamp is aligned
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