TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Fresnel lens to see traffic lights

Discussion in 'Roadster' started by jordanthompson, Oct 28, 2014.

  1. jordanthompson

    jordanthompson 2010 2.0 Sport, VIN 0683

    Joined:
    Apr 27, 2011
    Messages:
    512
    Location:
    Satellite Beach, FL
    I saw one of these on a Lotus. Pretty cool. The website is on the lens.
    Fresnel.png
     
  2. wiztecy

    wiztecy Active Member

    Joined:
    Apr 29, 2012
    Messages:
    2,722
    Location:
    Santa Cruz, California, United States
    #2 wiztecy, Oct 28, 2014
    Last edited: Oct 28, 2014
    Neat idea but I'd get annoyed at that thing always hanging around on my windshield.

    After taking my visors off I've improved seeing the lights pretty well (I'm 6'). There's usually a low and high light. Also when the clear-top is on there is no issue. I could also always carry one of these nifty periscopes with in case there is one out of sight. They come in some standard Roadster colors as well ;)


    41kR32ysd6L.jpg
    car-periscope-curb-your-enthusiasm-larry-david.png
     
  3. adiggs

    adiggs Active Member

    Joined:
    Sep 25, 2012
    Messages:
    1,352
    Location:
    Portland, OR
    I find the clear top handy as well for seeing stop lights. Being able to look through the roof to see the state of the stop light - handy, and simultaneously amusing to me :)

    I think I need to figure out how to get those visors off - I think I can still count with 1 hand in 2 years, the number of times the visor was just what I needed to handle the sun. The rest of the time, it's just a minor occlusion to a small world view, looking out from the cockpit of the car. That's another thing the glass top helps with - even if it's just a perception of "bigness", you see more of the world around you.
     
  4. jordanthompson

    jordanthompson 2010 2.0 Sport, VIN 0683

    Joined:
    Apr 27, 2011
    Messages:
    512
    Location:
    Satellite Beach, FL
    I'm 6' 2" and the visors were the first thing I did. Takes 5 seconds if you are slow. Just slide them horizontally off of the pins.
     
  5. wiztecy

    wiztecy Active Member

    Joined:
    Apr 29, 2012
    Messages:
    2,722
    Location:
    Santa Cruz, California, United States
    #5 wiztecy, Oct 28, 2014
    Last edited: Oct 28, 2014
    Just make sure to keep a baseball cap in the Roadster at all times after removing the visors. If you do get any glare from the sun, since the visors are gone, just throw the cap on and tilt the brim down until it filters the sun.

    I also removed the overly huge rear view mirror and replaced it with the micro-mirror. Helps clean up the windshield area and offers more visibility. The micro mirror is the perfect size, visibility covers the space between the two head rests of the rear window so you're not missing really much from what the big mirror offered. Only issue is you have to manually pull the mirror down for night driving. I may look into having the anti-glare/blue film put over the mirror.

    This is a random pic off the net with it on the Elise:

    elise5.jpg
     
  6. ecarfan

    ecarfan Well-Known Member

    Joined:
    Sep 21, 2013
    Messages:
    10,397
    Location:
    San Mateo, CA
    @wiztecy, with your micro mirror are you saying that at night the glare is such that you have to reposition the mirror and tilt it down so that it is not usable? There is no day/night version?

    I wonder if an anti-glare film on that mirror would be enough to make it usable at night?

    Where did you buy the mirror from? I think you posted about it in another thread but I've forgotten who the manufacturer is. Thanks.
     
  7. wiztecy

    wiztecy Active Member

    Joined:
    Apr 29, 2012
    Messages:
    2,722
    Location:
    Santa Cruz, California, United States

    The mirror doesn't have the tab to flick it up or down like the stock one has, so I tilt it down. Only thing I'm worried about the blue film is that its another layer put on the mirror, so filtering the image so to speak. Would be nice if that was an option for the mirror. I do think that would take the glare the headlights cause out of the picture. I picked the micro-mirror up from Sector 111:

    microMIRRORâ„¢ Rear View Mirror for the Lotus Elise and Exige - Sector111
     
  8. herbvdh

    herbvdh Member

    Joined:
    Jan 31, 2010
    Messages:
    200
    Here I always stop so I cab see the light. Consequently I stop a car length or more back. Learning to drive Mom asked me why I stop so far back? "So I can see the light" She never realized that as she was shorter than me. I am just over 6'
     
  9. bobinfla

    bobinfla S-Vin 4086 Rdstr-Vin 0019

    Joined:
    Jul 9, 2012
    Messages:
    182
    Location:
    Land O'Lakes
    Okay, for $17 I'm going to give it a shot. Thanks for the tip, Jordan.
     
  10. ecarfan

    ecarfan Well-Known Member

    Joined:
    Sep 21, 2013
    Messages:
    10,397
    Location:
    San Mateo, CA
    Thanks for the link. So you are saying that it is usable at night, you just have to manually adjust it, which in effect does the same thing as if it had a day/night tab, just not as conveniently?

    I think I would be okay with that. Looks like the install is simple.

     
  11. Doug_G

    Doug_G Lead Moderator

    Joined:
    Apr 2, 2010
    Messages:
    15,853
    Location:
    Ottawa, Canada
    I use a MicroMirror, but it's horrible at night unless tinted. Just put a 30% tint on it - the light has to go through twice so that will give you 60%. That level of tint is just fine day or night.

    (The MicroMirror is essential IMHO - I can lose whole cars at 4-way stop signs otherwise).

    And yes, the visor is easy to remove. Just slide off the pivot sideway, wiggle it back and forth as you do so and it comes off easily. Easily replaced if you need it. Made all the difference in seeing traffic lights.
     
  12. wiztecy

    wiztecy Active Member

    Joined:
    Apr 29, 2012
    Messages:
    2,722
    Location:
    Santa Cruz, California, United States
    Doug, did you notice any distortion from the mirror after applying the film? Any tips/tricks? Would a Blue film be preferable over the grey/black?

    Here's another idea for the fresnal lens, its a credit card magnifier and its smaller:

    Amazon.com: Wholesale Lot of 10 Credit Card Sized Wallet Magnifiers 3X Lenses by OpticLens: Office Products

    41A6ju0XJML.jpg

    Found that in this thread:
    How To See Traffic Lights If You're Tall

    Here's a picture of a medium fresnal lens in action, you can see how the traffic light is pulled down and shrunk in the lens:

    DSC03007.jpg
     
  13. Doug_G

    Doug_G Lead Moderator

    Joined:
    Apr 2, 2010
    Messages:
    15,853
    Location:
    Ottawa, Canada
    I tried about half a dozen times to get it perfectly flat and failed. There are a couple of bubbles. I don't really notice them.

    Blue would be a matter of preference. The main thing is to dim the headlights of the car behind you - they're always at eye level in the Roadster - without making it too dim for daytime use. I found the standard grey tint worked fine.

    Of course another option is to 60% tint the entire rear window. Same effect.
     
  14. Chillout

    Chillout Member

    Joined:
    Jun 30, 2014
    Messages:
    307
    Location:
    the Netherlands
    That Micromirror is highly overpriced, in my opinion... Are there any alternatives to this?
    In the Netherlands, the traffic lights aren't placed on the opposite side of the crossing like in the USA, so it's virtually impossible to see the lights without keeping my head on my steering wheel...
     
  15. jordanthompson

    jordanthompson 2010 2.0 Sport, VIN 0683

    Joined:
    Apr 27, 2011
    Messages:
    512
    Location:
    Satellite Beach, FL
    #15 jordanthompson, Oct 29, 2014
    Last edited: Oct 29, 2014
    Not too impressed with the Elise RADAR installation... Here's mine:

    Here is the remote head (its just in front of the trunk release so you reach over it to hit the button - not even remotely hard):
    IMG_20141029_104318.jpg
    The actual unit is mounted on Velcro so I can easily remove it when I leave the car (its easier than putting up the top!) Everyone who sees it's first reaction is that I have installed backwards :tongue:
    IMG_20141029_104306.jpg
     
  16. NigelM

    NigelM Recovering Member

    Joined:
    Apr 3, 2011
    Messages:
    13,257
    Location:
    Sarasota, FL
    Doesnt work like that around here. Many of our traffic lights are demand controlled via induction coils in the roadway, if no car stops over the embedded wires the lights don't change. And yes, it's horribly frustrating during the winter when we are flooded with careful driving tourists and snowbirds who don't realize how these things work and they refuse to pull forward to the stop line.
     
  17. NomoC8

    NomoC8 Member

    Joined:
    Jul 30, 2013
    Messages:
    105
    Location:
    Chi town
    These are great if you have trouble seeing the signal. I have one of these in my S2000 for 15 years! It sticks on like static film.

    :scared:
    Wow! I can't believe it doesn't have the manual dimming switch. I agree that is waaay over priced. I'm in the process of installing an auto dimming mirror from a Cooper mini. It's about the same size as the micro for less than half the price, and it's auto dimming. Picked up a used one off eBay.

    BTW, this thread is all over the place: fresnel lenses, rear view mirrors and radar detectors. You can search for my set-up using my user name.
     
  18. ecarfan

    ecarfan Well-Known Member

    Joined:
    Sep 21, 2013
    Messages:
    10,397
    Location:
    San Mateo, CA
    I am interested to learn how you are mounting a Mini Coper rear view mirror in your Roadster. I searched for your username but only found about 8 threads, none about mirrors. Please give the thread subject line or a link to it. Thanks.

     
  19. NomoC8

    NomoC8 Member

    Joined:
    Jul 30, 2013
    Messages:
    105
    Location:
    Chi town
    I haven't finished it yet. The thread I was referring to was regarding my V1 remote display. I'll post the mirror install once it's done.
     
  20. wiztecy

    wiztecy Active Member

    Joined:
    Apr 29, 2012
    Messages:
    2,722
    Location:
    Santa Cruz, California, United States
    The micro-mirror from s111 is machined out of billet aluminum, hence the higher cost. Its super solid for sure and yes on the higher end of things for price, but its of really good quality. Looking forward seeing the Cooper mirror and mounted in the Roadster. I may take my micro mirror to a tint shop to see if they can add some tint, can't cost much since they most likely have scraps that size laying around. I'm guessing the micro mirror since its machined is the reason they didn't put a dimmer switch on it, but they seriously should have added the anti-glare blue tint to it at least. It also would look cooler.
     

Share This Page