# Rear View Mirror

**URL:** <https://boards.straightdope.com/t/rear-view-mirror/18162>\
**Category:** Factual Questions\
**Created:** [April 30, 2000, 9:22am UTC](https://boards.straightdope.com/t/rear-view-mirror/18162 "2000-04-30T09:22:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![chief](https://avatars.discourse-cdn.com/v4/letter/c/df788c/32.png) [@chief](https://boards.straightdope.com/u/chief)\
**Post date:** [April 30, 2000, 9:22am UTC](https://boards.straightdope.com/t/rear-view-mirror/18162/1 "2000-04-30T09:22:37Z")

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in the new Chrysler LHS (i think thats the name)

it has a cool thing on the rear view mirror so that at night other cars’ headlights appear to be green  
how do they do that? is it some kind of coating on the mirror?

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**Author:** ![funneefarmer](https://avatars.discourse-cdn.com/v4/letter/f/9fc348/32.png) [@funneefarmer](https://boards.straightdope.com/u/funneefarmer)\
**Post date:** [April 30, 2000, 10:10am UTC](https://boards.straightdope.com/t/rear-view-mirror/18162/2 "2000-04-30T10:10:36Z")

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[Gentex Electrochromic Automatic Dimming Mirrors](http://www.gentex.com/automotive_products2.html)

“Gentex uses its proprietary, solution-phase electrochromic technology. We sandwich an electrochromic gel between two pieces of glass, each of which has been treated with a transparent, electrically conductive coating, and one with a reflector.”

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**Author:** ![lswote](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lswote/32/5737_2.png) [@lswote](https://boards.straightdope.com/u/lswote)\
**Post date:** [April 30, 2000, 7:49pm UTC](https://boards.straightdope.com/t/rear-view-mirror/18162/3 "2000-04-30T19:49:50Z")

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I have an LHS and I love the car but I would prefer a conventional day/night mirror. They react to the intensity of the lights behind you and if it is dark behind you and a car suddenly pulls in behind you it is blinding for a few seconds till the mirror adjusts.

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**Author:** ![chief](https://avatars.discourse-cdn.com/v4/letter/c/df788c/32.png) [@chief](https://boards.straightdope.com/u/chief)\
**Post date:** [May 1, 2000, 6:25am UTC](https://boards.straightdope.com/t/rear-view-mirror/18162/4 "2000-05-01T06:25:50Z")

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wow, this is really cool how it works.  
thanks for posting!