# FACTS on HIDs/Projectors

**URL:** <https://forums.speedlife.net/t/facts-on-hids-projectors/26223>\
**Category:** NYSpeed Automotive\
**Created:** [March 21, 2007, 8:48am UTC](https://forums.speedlife.net/t/facts-on-hids-projectors/26223 "2007-03-21T08:48:35Z")\
**Posts on this page:** 1\
**Showing post:** 23

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 21, 2007, 12:35pm UTC](https://forums.speedlife.net/t/facts-on-hids-projectors/26223/23 "2007-03-21T12:35:53Z")

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[quote=“tweety,post:22,topic:26223"”]

All that blue light is the refractive index of the glass varying with the wavelength of the light, which makes the coloured fringes .  
A bit of coating on the lens would get rid of that, or some better glass- LOL

[/quote]

people amplify it by tilting the cutoff plate inside the projector. I’m 100% serious about people wanting to blow you by making that blue stripe bigger…

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