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Thread: can a led ever throw as far as this?

  1. #1

    Default can a led ever throw as far as this?

    i think it throws a few miles https://www.peakbeam.com/resources/faq/
    LED's have gotten too bright in our stuff. Many nights I'm awakened by my modem lights blinking.had help with my sig thank you for your help.

  2. #2

    Default Re: can a led ever throw as far as this?

    LEDs might not, they excel at efficiency but lag behind arc lamps in intensity. At the rate LEP is going though, I wouldn't be surprised if they're topping that soon.

  3. #3
    Flashaholic Bazar's Avatar
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    Default Re: can a led ever throw as far as this?

    Quote Originally Posted by raggie33 View Post
    i think it throws a few miles https://www.peakbeam.com/resources/faq/
    Probably some day. The Imalent next advancement of LED is planning on a multi emitter SBT90.2 capable of over 20k lumens and over 3m candela.
    The Astrolux MF05 has 2.5m candela. That maxabeam might not really have 12m candela, I'd have to see someone do a 20 meter test and they have zero examples to prove that, even if it is an HID light it has 3 distinct disadvantages over the larger but lighter weight MF05,
    1) HID lights are laughably bright. They lack the ability to run cold and low in output. It might not make much sense to run a flashlight at 2.5 lumens at first, but it's a great feature non the less. You have to run them bright, you have to. Without heat incandescent lights like HIDs/ xenon cannot work.
    2) runtime at brightness
    HiD lights hypothetically at the same brightness or at the same lumens ( LEDs can output much more lumens, this is included in this #2 disadvantage) have much less luminous efficiency. They cannot hold the light as long and must use less efficient Lead acid batteries or hi temp Lion batteries because their body suffers from heat. This means a lesser battery efficiency combined with weak transfer from electric power to light, at only 7-10 percent vs LEDs with now over 30% at best and 20% at minimum.

    3) HIDs and all other incandescent bulb types are physically unstable. They decay quickly with use. This makes them more anatomically expensive.

    Price, availability (that one is huge, try putting your hands on a Lemax supperpower-get back to me on that, they are 2100 dollars US plus a 700 dollar military tracking customs fee and if you have a violwnt felony you might not be able to get one) and size are other natural disadvantages that are not constant disadvantages nor or they always relevant.
    Last edited by Bazar; 08-15-2020 at 08:16 AM.

  4. #4

    Default Re: can a led ever throw as far as this?

    Quote Originally Posted by raggie33 View Post
    i think it throws...
    what is the Candela spec?

  5. #5
    Flashaholic*
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    Default Re: can a led ever throw as far as this?

    “Every Maxa Beam Searchlight has the following range when set to high beam and focused to its tightest 1° spot:

    0.25 lux @ 6,925 meters (4.3 miles) [ANSI/NEMA FL1 Standard Range]
    1 lux @ 3,500 meters (2.15 miles)
    12 lux @ 1,000 meters (.62 miles)
    The measurement and calculation of Range is defined by the ANSI/NEMA FL1: Flashlight Basic Performance Standard. According to this standard, a flashlight’s range is the calculated distance at which it will provide a light intensity of 0.25 lux on target.

    Using the calculations set forth in the ANSI/NEMA FL1 Standard, the Maxa Beam’s range is nearly 7 kilometers!

    Practically speaking, however, 0.25 lux is a very small amount of light and factors like moisture or particles in the air and limitations on optics will impact the real-world, practical use of 0.25 lux at 6,925 meters. Peak Beam Systems therefore typically rates the Maxa Beam’s range as the distance at which it will provide the more useable intensity of 1 lux on target.”
    Big butnotsomuch-burly

  6. #6
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    Default Re: can a led ever throw as far as this?

    Quote Originally Posted by jon_slider View Post
    what is the Candela spec?

    I read stated 12miljon candela at one model. But no lumen rating. I would like to know the lumen and also see a runtime graph...

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