autodimming mirror

bazooka joe said:
if you have a dark tint on the rear window the auto dimming feature may not work....?

It won't work as well because the sensor won't detect as much light coming in- but if you have tinted windows you probably don't need it anyway...
 
I've got 7% limo tint and it dims just fine, how it does it is simple, it has an "eye" looking forward and backward, if the rear facing eye is brighter then the forward eye, it assumes the difference is caused by headlights and it dims the mirror according to the difference in light. The way it does it, as far as I know is that it uses some sort of LCD film that polarizes the glass. http://www.usefilm.com/photo_articles/44/How_to_use_a_polarizing_filter.html this document explains how polarizing works
 
Vulcanon said:
I've got 7% limo tint and it dims just fine, how it does it is simple, it has an "eye" looking forward and backward, if the rear facing eye is brighter then the forward eye, it assumes the difference is caused by headlights and it dims the mirror according to the difference in light. The way it does it, as far as I know is that it uses some sort of LCD film that polarizes the glass. http://www.usefilm.com/photo_articles/44/How_to_use_a_polarizing_filter.html this document explains how polarizing works

Oh man...thanks so much. I still don't even comprehend how a television works, so this mirror thing had me quite confused. I appreciate the informative link! :D
 
I think that the easy thing for them to do is make the entire mirror out of one large Liquid Crystal Display.
(Like on a digital watch, or clock)

The contrast, or dimming, is controlled by the voltage to the screen.
The eye is most likely a normal photoresistor, the same as in automatic night lights.
 
I've found that when the mirror dims, the image in the mirror get's hazy. (Not on this one b/c I don't have it, but on others) Does anyone agree?
 
funnylittlman said:
I've found that when the mirror dims, the image in the mirror get's hazy. (Not on this one b/c I don't have it, but on others) Does anyone agree?

Well, I have not really noticed that. Of course I do think it can be hard to use during the daytime (parking garages, etc.), but I think it is just because of the "tinting." I have not noticed an obscure image though...
 

New Threads and Articles

Back