E90Post
 


MINHS Auto Care Center
 
BMW 3-Series (E90 E92) Forum > BIMMERPOST Universal Forums > General BMW News and Cars Discussion > Heads up display and polarized sunglasses



Reply
 
Thread Tools Search this Thread
      07-17-2010, 02:53 PM   #1
fdsasdasdf
Captain
 
fdsasdasdf's Avatar
 
Drives: 330Ci ZHP 6sp
Join Date: Apr 2009
Location: Raleigh, NC

Posts: 779
iTrader: (0)

Heads up display and polarized sunglasses

I recently found out that BMW'S HUD does not work at all with polarized sunglasses. We were trying to figure out why we couldn't see it even though it said it was on. Took off the sunglasses and it popped right into view.

Has anyone else noticed this problem? We asked the BMW Ultimate Driving guys about it and they had no idea that it did not work with polarized glasses.
fdsasdasdf is offline  
0
Reply With Quote
      07-17-2010, 06:04 PM   #2
ptack
Brigadier General
 
ptack's Avatar
 
Drives: 135i
Join Date: May 2008
Location: NJ

Posts: 4,222
iTrader: (0)

Garage List
2008 135i  [3.00]
Oakleys
__________________
135i, SGM, Coral, Sport Package, Auto, Premium Hifi, USB/ipod, Apex EC-7s, PPK Stage II
ptack is offline   United_States
0
Reply With Quote
      07-17-2010, 07:07 PM   #3
AMP
Private First Class
 
AMP's Avatar
 
Drives: E34, E39, & E60 M5; E92 M3
Join Date: Mar 2010
Location: Tucson, AZ

Posts: 162
iTrader: (0)

I've had issues with polarized lenses since my E60 550i. There's no issue with any of the displays in the car except for the HUD (which almost disappears). My solution was to buy a new set of frames and have non-polarized lenses made up for them.

Although I prefer polarized lenses I would much rather be able to see the HUD.

As an aside this is also an issue with the radio display in the non-nav E9x cars. Every time I get a loaner the radio display is invisible.
__________________
'12 Alpina B7 Alpina Blue/Black
'11 1M Coupe Alpine White
'11 M3 Coupe Silverstone/Black (sold)
'08 M6 Coupe Stratus/Black
'03 M5 Sedan Imola Red/Black (sold)
AMP is offline  
0
Reply With Quote
      07-17-2010, 07:16 PM   #4
ibimmer346
Major
 
Drives: 2013 650i GC, 2002 M3
Join Date: Jul 2007
Location: San Diego, California, USA

Posts: 1,231
iTrader: (0)

Garage List
2002 BMW M3  [0.00]
2013 BMW 650i GC  [0.00]
Yep, it's an issue with the HUD. "Best" solution is probably non-polarized lenses. Not much you can do about it.
ibimmer346 is offline   United_States
0
Reply With Quote
      07-17-2010, 08:48 PM   #5
brady
New Member
 
brady's Avatar
 
Drives: 2010 135i
Join Date: Jun 2010
Location: texas

Posts: 14
iTrader: (2)

http://www.1addicts.com/forums/showt...nglasses+radio
brady is offline   United_States
0
Reply With Quote
      07-17-2010, 11:57 PM   #6
Cdnrockies
Banned
 
Drives: BMW's
Join Date: Oct 2009
Location: Calgary

Posts: 1,113
iTrader: (0)

Quote:
Originally Posted by ptack View Post
Oakleys
Polarized Oakleys will do the exact same thing.

Non-polarized lenses seem to be the only option.
Cdnrockies is offline   Canada
0
Reply With Quote
      07-19-2010, 09:06 AM   #7
bimmerlex
Captain
 
bimmerlex's Avatar
 
Drives: E92 LCI / E70 X5 xDr35d
Join Date: Jan 2007
Location: SoCal.

Posts: 841
iTrader: (24)

Garage List
There was a thread here somewhere about some little piece of adhesive plastic film that you tape over HUD, and then you can see it even with polarized lenses...
bimmerlex is offline   Russian Federation
0
Reply With Quote
      07-19-2010, 09:45 AM   #8
tmclssns
Sideways
 
tmclssns's Avatar
 
Drives: BMW E87 118d
Join Date: Apr 2010
Location: Belgium

Posts: 46
iTrader: (0)

Quote:
Originally Posted by bimmerlex View Post
There was a thread here somewhere about some little piece of adhesive plastic film that you tape over HUD, and then you can see it even with polarized lenses...
It's here: http://www.1addicts.com/forums/showthread.php?t=215204. It's a mod worth the effort - I'd do it too in my current E87 but since I get a E82 in September I can't be bothered for the remaining period. (and I usually drive around on my iPhone as audio-source, so no real need as well to see the screen).
tmclssns is offline   Belgium
0
Reply With Quote
      07-20-2010, 08:59 PM   #9
Kiemyster
Bimmerpost Resident Marijuana Consultant
 
Kiemyster's Avatar
 
Drives: E90x4 (M3, 335xi, 325xi,320i)
Join Date: Nov 2006
Location: Queens/NYC

Posts: 3,118
iTrader: (2)

Garage List
couldnt you apply the film to your glasses if you wanted?
__________________
"AMG What! S-Line Who? If you ain't got that M I got no respect for you!"
'06 Alpine Weiss E90 320i | '06 The Green Machine E90 325xi | '11 Alpine Weiss E90 M3 ZCP | '10 Silverstone X5M | '11 Alpine Weiss E90 335xi
Kiemyster is offline   Trinidad_and_tobago
0
Reply With Quote
      07-25-2010, 10:49 PM   #10
phoenix155
Registered
 
Drives: 2009 BMW 328i
Join Date: Jul 2010
Location: Visalia, CA

Posts: 1
iTrader: (0)

Quote:
Originally Posted by Zell View Post
I recently found out that BMW'S HUD does not work at all with polarized sunglasses. We were trying to figure out why we couldn't see it even though it said it was on. Took off the sunglasses and it popped right into view.

Has anyone else noticed this problem? We asked the BMW Ultimate Driving guys about it and they had no idea that it did not work with polarized glasses.
Any heads up display system will not work well with polarized sunglasses. I can't explain the reason, but I work on HUD system in the military and we get pilots all the time who complain that their HUD "isn't bright enough." "Sir, take off your sunglasses, please." "OH! There it is!"

No offense meant to you at all - they're trained not to wear polarized glasses. You aren't. Just get glasses that don't have polarized lenses. Easiest option.

:-)
phoenix155 is offline  
0
Reply With Quote
      07-26-2010, 11:19 AM   #11
papahotel
New Member
 
Drives: BMW F10 523i
Join Date: Jul 2010
Location: Netherlands

Posts: 20
iTrader: (0)

Quote:
Originally Posted by phoenix155 View Post
Any heads up display system will not work well with polarized sunglasses. I can't explain the reason, but I work on HUD system in the military and we get pilots all the time who complain that their HUD "isn't bright enough." "Sir, take off your sunglasses, please." "OH! There it is!"

No offense meant to you at all - they're trained not to wear polarized glasses. You aren't. Just get glasses that don't have polarized lenses. Easiest option.

:-)
haha
I know what you mean HUD and pilots dont always go well.
but now, I'm used to it and I cant imagine to start a approach without HUD:P.
but every professional pliot knows not to use polarized glasses, some airliners just ban then from the cockpit.
papahotel is offline  
0
Reply With Quote
      07-27-2010, 06:53 PM   #12
crfine88
Colonel
 
crfine88's Avatar
 
Drives: E92M
Join Date: Jan 2009
Location: Cave Creek AZ.

Posts: 2,228
iTrader: (13)

Quote:
Originally Posted by ptack View Post
Oakleys
__________________
crfine88 is offline  
0
Reply With Quote
      07-30-2010, 07:02 AM   #13
biggles
Private First Class
 
Drives: M3/1M (ordered)
Join Date: Jul 2010
Location: UK

Posts: 114
iTrader: (0)

Quote:
Originally Posted by papahotel View Post
haha
I know what you mean HUD and pilots dont always go well.
but now, I'm used to it and I cant imagine to start a approach without HUD:P.
but every professional pliot knows not to use polarized glasses, some airliners just ban then from the cockpit.
Unfortunately my aircraft type doesn't have HUD, but wearing polarized lenses turns the front windows into some sort of bizarre technocolour display.....very pretty but not too helpful!

biggles
biggles is offline   United Kingdom
0
Reply With Quote
      07-30-2010, 08:18 AM   #14
Artmasterx
Captain
 
Artmasterx's Avatar
 
Drives: 2007 BMW 335i
Join Date: Jun 2008
Location: MA

Posts: 850
iTrader: (0)

Garage List
If you think of light as a having two axes, and x-axis and a y-axis, then a polarizing filter (sunglasses) will generally removed most of the light in one of the axes. So after the filter you are left with light in only one of the two dimensions (and typically 50% of the initial light intensity). If you then run the polarized light through another polarizing filter at 90 degree angle to the first, all light will be blocked (if the filter is at the same angle, no light will be blocked).

You can test this by taking two pairs of polarized sunglasses, lining up the lenses of the two, and then rotating the sunglasses relative to each other so you see through one lens of each pair. At some angle, they will block most or all of the light. The first blocks light along one axis, the second blocks it along the other.

The reason that polarized sunglasses essentially negate the HUD is because the reflected light is mostly polarized. The reflected light coming from the HUD is polarized orthogonal/opposite to the sunglasses, so that light is completely removed by the sunglasses (unlike most other ambient light which is not polarized, of which only a portion of the light is removed by the polarization and tint). If you tilt your head sideways 90 degrees, I bet the HUD shows back up because now you are aligning the axis of the polarized sunglasses with how the reflected light is already polarized. This is the same with the radio displays, where if you tilt your head you can see it again.

The reason that putting something like transparency film (oriented correctly) over the radio display helps is that it changes the angle of polarization so that the sunglasses don't filter all the light anymore.

My guess is that all polarized sunglasses are designed with the same axis of polarization because most reflected light (i.e. of the water, etc) is not what we want to see and is usually polarized the same way... so sunglass manufacturers choose the polarization axis to kill those types of light.

Anyway, not the most eloquent, and maybe not completely correct, but the general idea should be about right.
__________________
Current: 2007 335i sedan
Alpine White | Sports | Premium | Cold | Comfort Access

FORMERLY: 128i coupe
Alpine White | Sports Package | Black Leather
Artmasterx is offline  
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 07:12 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST