Results 1 to 14 of 14

Thread: Unusual visual phenomenon with polarized lenses

  1. #1
    OptiBoard Professional
    Join Date
    Apr 2005
    Location
    San Diego
    Occupation
    Dispensing Optician
    Posts
    234

    Unusual visual phenomenon with polarized lenses

    So I purchased and mounted some aftermarket polarized lenses in some sunglasses of mine .. gray/brown base with full reflective blue mirror coating ..

    i noticed when i drive with the sun directly positioned in front of me there is a blueish hue on my black dashboard... when I tilt my head left or right it disappears... when I look move my head left or right it disappears.. when I drive in a different direction where the sun isnít straight ahead it disappears..

    i also noticeed if Iím walking on black asphalt with the sun directly ahead and I look at the ground there again is a bluish color straight ahead on the ground but as soon as my head deviates away the blueish hue goes away..

    this also happens with some other sunglasses with a rose tint and polarized.. anybody have any ideas?
    Attached Thumbnails Attached Thumbnails C3AA39FE-6C10-4337-9282-A42935E6226A.jpg   197EE975-4B4E-426C-B2FD-C94DC1866C6B.jpg  

  2. #2
    Master OptiBoarder
    Join Date
    Nov 2013
    Location
    Elmer J Fudd's yacht
    Occupation
    Other Optical Manufacturer or Vendor
    Posts
    647
    It's the combination of the polarization and blue mirror reflecting the light on certain angles. Backside AR will help to alleviate but not completely.

  3. #3
    Master OptiBoarder
    Join Date
    Jun 2000
    Location
    California
    Occupation
    Dispensing Optician
    Posts
    2,588
    It is possible that they are off axis

  4. #4
    OptiBoard Professional
    Join Date
    Apr 2005
    Location
    San Diego
    Occupation
    Dispensing Optician
    Posts
    234
    I thought the mirror might have something to do with it but my secondary pair that is rose colored does not have a mirror coat...

  5. #5
    Master OptiBoarder OptiBoard Gold Supporter
    OptiBoard Silver Supporter

    Join Date
    Mar 2012
    Location
    Maryland
    Occupation
    Dispensing Optician
    Posts
    1,924
    Quote Originally Posted by rolandclaur View Post
    I thought the mirror might have something to do with it but my secondary pair that is rose colored does not have a mirror coat...
    And that other pair does the same thing?

  6. #6
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
    Join Date
    Dec 2004
    Location
    At a position without dimension...
    Occupation
    Dispensing Optician
    Posts
    4,250
    The TV show "Nature" last night had a great episode about gemstones and why their colors vary.

    From google search this is why the Hope diamond is blue-

    It is blue to the naked eye because of trace amounts of boron within its crystal structure, and exhibits a red phosphorescence under exposure to ultraviolet light.

    Makes me wonder if, at the right sun angle, the red end of the spectrum is being affected through these lenses

  7. #7
    Master OptiBoarder
    Join Date
    Oct 2005
    Location
    new york
    Occupation
    Optometrist
    Posts
    3,750
    One of the reasons I don't love polarized lenses.

  8. #8
    Master OptiBoarder OptiBoard Gold Supporter
    OptiBoard Silver Supporter

    Join Date
    Mar 2012
    Location
    Maryland
    Occupation
    Dispensing Optician
    Posts
    1,924
    Quote Originally Posted by fjpod View Post
    One of the reasons I don't love polarized lenses.
    Really doc? I don't doubt your opinion is reall but I LOVE really good polarized lenses, makes me feel like I have cyborg eyes or something.

  9. #9
    OptiBoard Professional
    Join Date
    Apr 2005
    Location
    San Diego
    Occupation
    Dispensing Optician
    Posts
    234
    Quote Originally Posted by Tallboy View Post
    And that other pair does the same thing?
    Yep.. Iíll try and take a pic through the lens to show you guys...

  10. #10
    Master OptiBoarder
    Join Date
    Oct 2005
    Location
    new york
    Occupation
    Optometrist
    Posts
    3,750
    Quote Originally Posted by Tallboy View Post
    Really doc? I don't doubt your opinion is reall but I LOVE really good polarized lenses, makes me feel like I have cyborg eyes or something.
    Really. I will avoid wearing them.

  11. #11
    Master OptiBoarder AngeHamm's Avatar
    Join Date
    Apr 2010
    Location
    Richmond, VA
    Occupation
    Optical Retail
    Posts
    1,801
    Quote Originally Posted by fjpod View Post
    Really. I will avoid wearing them.
    I won't wear sunglasses that aren't polarized. Different strokes...
    I'm Andrew Hamm and I approve this message.

  12. #12
    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
    Join Date
    Oct 2016
    Location
    Maryland
    Occupation
    Optical Wholesale Lab (other positions)
    Posts
    690
    So let me get this straight. Asphalt and dash produce some blue effects through your polarized lenses, even the non-mirror. I am assuming that your dash is black as well. Black has a tendency of looking blue to those of us with color challenges. The glare produced by flat surfaces do not always reflect back at a perfect 90. Thus, when you tilt your head slightly, it goes away.
    You are most likely seeing the effects of stressed birefringence. Your lenses may be smidge big and/or the polarization may be a few degrees off the 180. Nothing to be overly concerned about IMHO.

  13. #13
    Master OptiBoarder AngeHamm's Avatar
    Join Date
    Apr 2010
    Location
    Richmond, VA
    Occupation
    Optical Retail
    Posts
    1,801
    Quote Originally Posted by lensmanmd View Post
    So let me get this straight. Asphalt and dash produce some blue effects through your polarized lenses, even the non-mirror. I am assuming that your dash is black as well. Black has a tendency of looking blue to those of us with color challenges. The glare produced by flat surfaces do not always reflect back at a perfect 90. Thus, when you tilt your head slightly, it goes away.
    You are most likely seeing the effects of stressed birefringence. Your lenses may be smidge big and/or the polarization may be a few degrees off the 180. Nothing to be overly concerned about IMHO.
    It's amazing how much trouble is caused by edging polarized lenses a touch too big.
    I'm Andrew Hamm and I approve this message.

  14. #14
    Master OptiBoarder
    Join Date
    Jun 2000
    Location
    California
    Occupation
    Dispensing Optician
    Posts
    2,588
    Quote Originally Posted by rolandclaur View Post
    Yep.. I’ll try and take a pic through the lens to show you guys...
    Did you check the axis on them?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Hi-index lenses vs visual comfort
    By douglasrac in forum General Optics and Eyecare Discussion Forum
    Replies: 30
    Last Post: 02-23-2012, 10:44 PM
  2. Age phenomenon
    By Spexvet in forum Just Conversation
    Replies: 7
    Last Post: 02-04-2011, 09:51 PM
  3. plaese explain phenomenon
    By Deepak in forum General Optics and Eyecare Discussion Forum
    Replies: 8
    Last Post: 12-29-2003, 05:14 PM
  4. RE: Help with Entoptic Phenomenon
    By KAYDEE in forum General Optics and Eyecare Discussion Forum
    Replies: 0
    Last Post: 07-07-2003, 05:35 AM
  5. Broca-Sulzer phenomenon
    By yzf-r1 in forum Ophthalmic Optics
    Replies: 2
    Last Post: 08-10-2002, 01:42 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OptiBoard is proudly sponsored by:
BC College of Optics, Younger Optics and Vision Equipment