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Green Lasermax

Discussion in 'Sights, Optics and Lasers' started by Grafuki, Mar 18, 2011.

  1. Grafuki

    Grafuki

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    I've been waiting two years for a green lasermax for my 27 but I'm really starting to think it will NEVER happen
     
  2. Brian Lee

    Brian Lee Drop those nuts

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    If you're talking about a guide rod laser, I wouldn't hold my breath. Green lasers require a lot more drive electronics to power them, and that means a separate circuit board that takes up a lot more space than the electronics that are neatly tucked inside the metal case of a red laser module. Plus there's the whole battery issue. Because green ones eat so much more power, a guide rod laser doesn't give them the room to give a green laser the sort of battery it would need if you want it to run for more than a few minutes.
     

  3. RayB

    RayB Retired Member

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    As I understand it, the green semiconductor (LED) laser is achieved by stepping up an infrared semiconductor (LED) laser into the green wavelengths... :headscratch:

    As I undersatnd it, the brilliant "white" flashlight and weapon light LEDs are achieved by coating an ultraviolet LED with a phosphor that emits the bright visible light we see when it's excited by the UV light... :wow:

    As I understand it, it's largely the chemical properties of the semiconductor (LED) that determines the color of the light it emits when it's energized... :eyebrow:

    Sometimes colored lenses are overlayed to enhance the colors... :cool:

    If anybody knows, in layman's terms, why can an infrared LED, a red LED, and a blue LED, all be lased, but a green LED--they do exist, don't they?--cannot? :dunno:

    --Ray
     
  4. Grafuki

    Grafuki

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    China make VERY SMALL green lasers now... I'm just disappointed. Like I said I think I gave up hope but maybe an exec at lasermax will read this and remember they forgot to announce it.

    *sigh*
     
  5. Stopdropnroll

    Stopdropnroll Moderator Millennium Member

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    hahaha, RayB and Grafuki, you asked for it.....Here is my best attempt at explaining lasers as I knew them. Please allow that I have simplified some of the specifics for clarity/post character limits.

    All laser devices are regulated by the FDA. The FDA will only allow up to a class IIIA or 5 mW (eyesafe laser) for commercial gun aiming applications. This means you can't just drop a brighter laser diode in your grips or guide rod.

    To make a laser, you take a laser diode and precisely fix a collumating lense in front of it. You now have a laser.

    Laser diodes come in various wavelengths, which determines the color of the beam. The color spectrum goes from at one end infrared, above say 800 nm down through visible light, red at 670, orange 635, green light is at approx 550nm. on down to blue to ultraviolet.

    Economics 101.. mass storage systems such as CD/DVDs and data storage are the big boys that drive the the diode industry...They went from red, skipped green and went straight to blue (BLU Ray). By skipping over green, no infastructure was created/researched/devoloped in green, so green parts are very expensive...as no one is really using them in global terms.

    Now, green is the optimum color for visibility to the human eye...

    However, there are no actual no green lasers diodes commercially available so you start with a infrared laser diode and then run it through a doubler chip. This doubler chip cuts the I.R. wavelength in half in order to reach the green spectrum. Now you have a green light producing diode.

    The problem is that the doubler chip operates at around 10% efficiency meaning that 10 times more power is required in order to get the same 5 mW output beam vs a red laser. 10x the power means a MUCH bigger powersource than what powers your current red lasers. So how do you add 36 more little batteries to the guide rod Lasermax or 16 more 2032 litiums to Crimson Traces Lasergrips and not change the original function and design?....you cant.

    Also this higher power input would generate much more heat, which is the mortal enemy of diode life.

    So with no industry giant driving R&D on green diodes, there has been no progress, no progress means no demand, no demand means no market, no market means no mass production and no competition, no mass production and no competition means no affordable prices on parts you would need. Thus the green laser in the configuration you're asking for is not likely, at least not at any price that you'd want to play.

    To the future, I would look for the next real move in laser sights to be toward blue lasers. As the big boys in the industry all went there with BLU-Ray. The blue laser will have about the same perceived brightness as current 635 nm red/orange lasers only they will be blue.

    Havent been around here for a while... that was fun... Hope this helped... SDnR
     
    Last edited: Mar 18, 2011
  6. RayB

    RayB Retired Member

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    Thanks! :wavey:

    At least I wasn't too far from the truth, in my limited understanding... :headscratch:

    I remember reading about the blue LED being invented by an employee (was it 1998?) of a Japanese electronics company; and I remember telling Judy that this will be a big deal for CDs and DVDs, if they can get the thing to lase! :thumbsup:

    A question, and a comment, if I may...

    As far as light frequencies go, in terms of LED colors, wouldn't the frequencies go more like this: Infrared > Red > Green > Blue > Ultraviolet? :eyebrow:

    And while blue light is a higher frequency than green light, blue is not optimal for the human eye-brain in terms of contrast, so I don't think it has a great future for targeting lasers, despite its popularity in other applications. :dunno:

    Again, thanks! :supergrin:

    --Ray
     
  7. Stopdropnroll

    Stopdropnroll Moderator Millennium Member

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    (Stopdropnroll) "...on one end infrared, above say 800 nm down through visible light, red at 670, orange 635, green light is at approx 550nm. on down to blue to ultraviolet.."

    (RayB) "wouldn't the frequencies go more like this: Infrared > Red > Green > Blue > Ultraviolet?"

    RayB forgive me, but unless I am missing something, I think we are saying the same thing...My appoligies if I have made a mistake...

    And Ya, Im not saying blue will be better, Im only commenting that green is dead on the vine due to no big industry support, research, demand...Blue wont be better, but I think it will be the "next" move in the industry...

    Good to see you still on here. SDnR ;)
     
  8. RayB

    RayB Retired Member

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    1) Nah, it's all me! I'm interested, but I'm out of my element! :headscratch:

    2) Maybe. Not all industry moves are good... :dunno:

    I was just saying... I know blue tritium lamps have been available for years (MMC offered them) and they've never caught on. :eyebrow:

    If, while driving at night, you look at deep blue, lighted signs, you'll notice immediately that your eye-brain doesn't discern them nearly as quickly as say, yellow or red... :freak:

    3) Thanks Man! You too! :wavey:

    --Ray
     
  9. 8541/9999

    8541/9999

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    Good to see you back SDnR
     
  10. Grafuki

    Grafuki

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    Thanks...


    ...For crushing my dreams.

    But really, at least now I know why I'm not gonna get one:(
     
  11. RayB

    RayB Retired Member

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    :crying: :sadangel: :therapy:

    --Ray
     
  12. janice6

    janice6 Silver Member

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    That was a very good explanation.
     
  13. RayB

    RayB Retired Member

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  14. ctcdesigner

    ctcdesigner

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    Ray,

    When I see blue lights while driving I freak out! I think a traffic cop is nearby.

    Maybe I should just drive slower :whistling:

    Dan
     
  15. joker42179

    joker42179

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    wanna get a group buy going?? :rofl:
     
  16. Shawn1

    Shawn1

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    not a guide rod but viridian makes a pretty nice green laser.
     
  17. TSAX

    TSAX USAF Vet

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    You will find this happens a lot on forums :whistling:
     
  18. Grafuki

    Grafuki

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    Looking for my G27. Guess the bunnys will live till morning...
     
  19. Otto Pistol

    Otto Pistol

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    The visible light spectrum: remember Roy G. Biv :

    R Red
    O Orange
    Y Yellow
    G Green
    B Blue
    I Indigo
    V Violet

    I too have been waiting two years for a Lasermax Green rod laser for my XD .40 subcompact. Looks like it won't happen. I had no idea the power requirements were so much higher with the green. I liked the rod idea because the laser would be out of the way and therefore not require a larger holster. Also, the lasers installed in the
    right grip would seem to sometimes be blocked if one is practicing trigger finger discipline (index finger along side frame until gun is on target AND the decision to fire is made).