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Do LED lights illuminate quicker than OEM ...

Discussion in 'Lighting' started by chris4x4, Sep 19, 2018.

  1. Sep 19, 2018 at 8:53 PM
    #1
    chris4x4

    chris4x4 [OP] With sufficient thrust, pigs fly just fine. Moderator

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    or other types of bulbs. I couldn't find ANYTHING that could give me definitive input as to how much faster an LED bulb can fully illuminate over an OEM bulb. This has been a bone of contention between a friend and myself, as he says the faster illumination of an LED can make someone see it "faster" thus they are safer. Pfft. I don't buy it, never did, and thought he was full of crap. No one ever said "Well.....His lights took sooo long to illuminate, that I ended up hitting them...…". After months of arguments, we decided to do an LED "side by side" with an OEM bulb. Special thanks to @deAutoLED.com for providing the lights. 2015 Toyota Tundra, with OEM bulb on the right, LED on the left. Video was shot with some "slow-motion" iPhone setting thing. Not sure why it uploaded in Non HD, but you still see the difference:

    https://www.youtube.com/watch?v=Evn739T108M
     
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  2. Sep 19, 2018 at 8:58 PM
    #2
    whatstcp

    whatstcp currently drunk so don't listen to me

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    interesting, never really thought about this even when I switched out my brake and reverse lights for leds. Mostly just did it for the brightness and the never having to worry about getting pulled over for a burnt out bulb
     
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  3. Sep 19, 2018 at 8:58 PM
    #3
    RelentlessFab

    RelentlessFab Eric @Relentless Fab Vendor

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    Cool! Looks like the LED was just ever so slightly faster to illuminate. Possibly because of less draw?
     
  4. Sep 19, 2018 at 9:00 PM
    #4
    Oldie2007

    Oldie2007 Well-Known Member

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    True that LED will be "faster". It's a diode, and response is literally instantaneous. Old bulbs are filament (wire that gets heated to produce light), and the filament has to warm to the point it will do so. 30+ years in lighting, and I will tell you GO LED when you can. Headlights and fogs are user decisions. Anything you can replace in an older vehicle will be BRIGHTER, FASTER, SAFER. You may have to change the flasher relay like I did in my 2007.
     
    Mtn Mike, MESO and chris4x4[OP] like this.
  5. Sep 19, 2018 at 10:23 PM
    #5
    chris4x4

    chris4x4 [OP] With sufficient thrust, pigs fly just fine. Moderator

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    Yeah, you could easily see it with your eyes, but I guess I never noticed until we did it on the same vehicle. Im trying to find out how many FPS he took the video, so I can extrapolate the actual time it took. From what I have found, as mentioned, the LED is a Diode, so it lights up really quickly. The OEM and other halogen bulbs illuminate from a glowing filament. Once the current is applied, there is a delay as the filament heats up, and glows. Kinda like a toaster...…...I guess.
     
  6. Sep 20, 2018 at 11:31 AM
    #6
    doughboy

    doughboy Well-Known Member

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    perhaps shot at default 240fps on iphone.
    on slo-mo playback, it looks like the difference is 1 second, which translates to real time of 0.125 seconds.
    would that difference matter? maybe, maybe not.
    regardless, LED has many more advantages so it is really the way to go.
     
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  7. Sep 20, 2018 at 12:50 PM
    #7
    Oldie2007

    Oldie2007 Well-Known Member

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    An LED (by itself), will turn in in NANOseconds. You can't see that fast. They also turn off in NANOseconds. Sometimes, if the LED uses a phosophor for coloration, it will "appear" to turn on a "little" slower (because it is heating the phosphors). And once it is warm, it will also "appear" to turn off a little slower, as the phosphors cool down. As turn signal lamps, when flashing, this can make them look like the incandescent filament lamps. However, the answer for how fast they turn on, is instantly. Faster than you could time.

    Oh yeah, I converted every lamp on my truck, except for headlamps and fogs, to LED this winter. Brighter, last longer, all that good stuff. Except for changing out the flasher relay to LED compatible. THAT sucker is NOT where you will enjoy changing it!
     
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  8. Sep 25, 2018 at 10:40 AM
    #8
    deAutoLED.com

    deAutoLED.com Well-Known Member Vendor

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  9. Sep 25, 2018 at 10:51 AM
    #9
    Clearwater Bill

    Clearwater Bill Never answer an anonymous letter

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    In theory.

    If someone is following so closely that that time delta makes a difference............ and they react with the same reduced time value, they should be F1 drivers.

    Nothing against proper use of LEDs. But they aren't quite as magical as everyone wants to make them out to be.

    Now when the activation of the LEDs tosses out a Starship Enterprise grade shield to protect your tush, I'm a buyer.

    [​IMG]
     
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  10. Sep 25, 2018 at 10:54 AM
    #10
    deAutoLED.com

    deAutoLED.com Well-Known Member Vendor

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    Our LEDs are brighter - deeper red giving the LED appearance to your stock halogen housing which looks great. But they are safer while looking better.

    This is from the Philips LED website:
    [​IMG]

    Photos of the bulb in action:


    [​IMG]

    [​IMG]
     
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  11. Sep 25, 2018 at 10:54 AM
    #11
    chris4x4

    chris4x4 [OP] With sufficient thrust, pigs fly just fine. Moderator

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    I get it. I never thought there was that large of a difference, and maybe it doesn't make much difference for reaction times, or safety. Just thought it interesting and decided to share.
     
  12. Sep 25, 2018 at 10:56 AM
    #12
    deAutoLED.com

    deAutoLED.com Well-Known Member Vendor

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    We replied at the same exact time :) please look above your post to see some research done by Philip LEDs taken from their website and photos of how these look.

    I want to add that the deAuto Team is very honest and they are only sharing photos that accurately represent what you'll see in person.
     
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