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Lasers (Split from Toys 4 Big Boys Thread)

  • 12-11-2007 10:32am
    #1
    Registered Users, Registered Users 2 Posts: 3,341 ✭✭✭


    Nice little lazer on it.

    and according to people in the know here on the legal front, that little laser is against the law...


Comments

  • Banned (with Prison Access) Posts: 11,001 ✭✭✭✭Masada


    yeah it is when used on an airsoft gun., id imagind they'll clear that law up soon enough though, its just a techicallity kinda thing as far as i know.,


  • Registered Users, Registered Users 2 Posts: 649 ✭✭✭sidneyreilly


    vtec wrote: »
    yeah it is when used on an airsoft gun., id imagind they'll clear that law up soon enough though, its just a techicallity kinda thing as far as i know.,

    Only way that will get cleared up is when some poor sod faces the bench with that as one of the charges. If convicted of it, then...

    Dont recomend that any of ye be the first to test it.


  • Registered Users, Registered Users 2 Posts: 2,497 ✭✭✭Nick_oliveri


    Well there is a cheap holosight and a lazer on the cheapo m41 that i got. And a torch, cheap holosight and a lazer on the shotguns. The shotguns look well with and without the stuff. Had to open up mine (m41) today because of a blockage.

    Sometimes the bb's break up when i hit something (hard!). Never experienced this with older slide bb guns or older aegs. But i haven't bought anything good since i first heard about the scene.


  • Registered Users, Registered Users 2 Posts: 8,758 ✭✭✭Stercus Accidit


    Wasnt that bad though when working. For a tenner you cant complain of being ripped off. Extras just nuts though. Length extension, quad rail, suppresor, sight and laser!

    Were they selling airsofts with lasers at t4bb?

    "they" is the not so reputables!

    That would be more semi legal practice on their part if its the case.


  • Closed Accounts Posts: 2,323 ✭✭✭Spitfire666


    well there were people selling l96 rifles that were blatently showing no regard for the law so selling a lazer is not exactly something to be worried about.


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  • Registered Users, Registered Users 2 Posts: 8,758 ✭✭✭Stercus Accidit


    Yeah I heard that too, and one retailer was sent home because of overpowered gear.

    Just thought the laser issue further highlighted the general ignorance of the law of some of the stalls, though we dont know for sure either whether the lasers are illegal or not!:D

    But its still a grey area.


  • Registered Users, Registered Users 2 Posts: 2,497 ✭✭✭Nick_oliveri


    Ireland is known for its exploitation of grey areas. Just look at the whole Magic Mushrooms thing and the recent legal xtc outrage.

    Anyways i cant wait till i have enough eurs to shell out on some durable, nice looking rifles or pistols. Im really annoyed that i missed the Eirsoft stalls.


  • Registered Users, Registered Users 2 Posts: 1,391 ✭✭✭extremetaz


    Motosam wrote: »
    Just thought the laser issue further highlighted the general ignorance of the law of some of the stalls, though we dont know for sure either whether the lasers are illegal or not!

    Part 5 section 26 of the 2006 CJA states that telescopic sights incorperating a light beam, light amplification or infra-red technology and designed for fitment to a firearm as described in the same section are considered constituent parts of a firearm and as such require a firearms licence.

    it places no prejudice on standard optical sights or laser pointer/designators.


  • Registered Users, Registered Users 2 Posts: 5,986 ✭✭✭ambro25


    extremetaz wrote: »
    Part 5 section 26 of the 2006 CJA states that telescopic sights incorperating a light beam, light amplification or infra-red technology and designed for fitment to a firearm as described in the same section are considered constituent parts of a firearm and as such require a firearms licence.

    it places no prejudice on standard optical sights or laser pointer/designators.

    TBH, the more I get back to S.5 2006 CJA and try and get my head around it w regard to airsoft, the more I believe this is designed to catch night sights (IR /starlight amplification -types) and/or sights equipped with range-finding devices.

    Lasers designaters of their own (as in, the small steel tube that emits a laser beam and nothing else) are eminently not telescopic: to be telescopic, I believe a sight has to have a magnification ratio. What is more, they are not, strictly speaking, 'sights'.

    As has been often mooted in discussions about the subject, and this is where the greyness arises most, you could theoretically fix a presentation pointer to your barrel or handguard, or use a €10 DE laser designator as a presentation pointer, and what would the difference be? Technically, none. Legally, well...

    The current position (lasers = bad) is a matter of consensus and mostly inspired to protect the sport: it is based on a cautious (self-preserving) interpretation of the Act. Nothing wrong with that, but it may be worthwhile seeking 'the word' from officialdom whenever any poster in here gets the chance (ask a Guard in the know, a ballistic tester... whatever).


  • Moderators, Sports Moderators Posts: 8,683 Mod ✭✭✭✭Rew


    Telescopic means somethiong that telescopes, (ie collapses into its self). What people have on AEG's and real steels are Optical Sights.

    The law certainly isn't clear but its always been the understanding of those in the shooting community that that lasers designed to attach to a firearm are what is refered to in that section.


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  • Registered Users, Registered Users 2 Posts: 5,986 ✭✭✭ambro25


    Rew wrote: »
    Telescopic means somethiong that telescopes, (ie collapses into its self). What people have on AEG's and real steels are Optical Sights.

    Not so, Rew, sorry. Well, at least not where sights are concerned.

    Go here.

    Extract (IMO the most relevant and best-supported) :

    A telescope (from the Greek tele = 'far' and skopein = 'to look or see'; teleskopos = 'far-seeing') is an instrument designed for the observation of remote objects.

    bullets, where's your post gone? There were some very valid points made :)
    (not to mention, it tended to concur with my current interpretation :D)


  • Registered Users, Registered Users 2 Posts: 5,021 ✭✭✭Hivemind187


    I'm afraid ambro is right, when folks are referring to something being telescopic they mean it imitates the action on the traditional collapsable telescope (ie a small tube collapsing into a smaller tube).


  • Banned (with Prison Access) Posts: 11,001 ✭✭✭✭Masada


    Yeah i agree with ambro and bullets, he made some very good points there, have seen worse posted and not getting removed.,


  • Registered Users, Registered Users 2 Posts: 649 ✭✭✭sidneyreilly


    ambro25 wrote: »
    Not so, Rew, sorry. Well, at least not where sights are concerned.

    Go here.

    Extract (IMO the most relevant and best-supported) :

    A telescope (from the Greek tele = 'far' and skopein = 'to look or see'; teleskopos = 'far-seeing') is an instrument designed for the observation of remote objects.

    bullets, where's your post gone? There were some very valid points made :) (not to mention, it tended to concur with my current interpretation :D)


    Again, it will be determined at some stage in the courts (as far as I know it has not happened yet). You can also bet that if someone gets away with it the definition will swiftly be changed!


  • Registered Users, Registered Users 2 Posts: 6,414 ✭✭✭kdouglas


    vtec wrote: »
    Yeah i agree with ambro and bullets, he made some very good points there, have seen worse posted and not getting removed.,

    bullets deleted his own post

    bullets: if you want it put back just say the word

    The main issue as far as i knew regarding laser sights was the fact that they can possibly be considered component parts of a firearm since they are designed to be attached to real steel firearms, the reason why the charter bans them is because of the uncertain nature of whether or not they are legal and is primarily a move to protect boards.ie, if we were all to post saying yea, lasers are fine, no bother, then someone is up in court for having one, that person could turn around and try sue boards

    Oh, and this is getting very off-topic so i am going to split it into a seperate thread


  • Banned (with Prison Access) Posts: 11,001 ✭✭✭✭Masada


    kdouglas wrote: »
    bullets deleted his own post

    Oh right, I thought it was a bit tame to have been deleted, was an awful lot of writing to do and then delete.,lol, you made some good points bullets, I have a laser sight too but i rather leave it off my pistols just to be on the safe side, theres another question, is it still thought to be illegal if its not attached to a gun? as in is it just a laser pointer until you attach it?


  • Registered Users, Registered Users 2 Posts: 649 ✭✭✭sidneyreilly


    vtec wrote: »
    Oh right, I thought it was a bit tame to have been deleted, was an awful lot of writing to do and then delete.,lol, you made some good points bullets, I have a laser sight too but i rather leave it off my pistols just to be on the safe side, theres another question, is it still thought to be illegal if its not attached to a gun? as in is it just a laser pointer until you attach it?


    If its designed to be attached/mounted then (probably): yes.

    If its been altered or adapted to be attached/mounted (probably): yes.

    If you have a laser pointer on it's own: no.

    If you get stopped, searched, have a pistol/airsoft in one pocket, laser pointer in the other and some tape/screws: Possible intent, ergo prove otherwise!


  • Registered Users, Registered Users 2 Posts: 6,414 ✭✭✭kdouglas


    If you get stopped, searched, have a pistol/airsoft in one pocket, laser pointer in the other and some tape/screws: Possible intent, ergo prove otherwise!

    if you had it in your pocket you'd be charged with alot more than intent to mount a laser


  • Banned (with Prison Access) Posts: 11,001 ✭✭✭✭Masada


    kdouglas wrote: »
    if you had it in your pocket you'd be charged with alot more than intent to mount a laser

    PMSL., im just picturing that scenario.,lol
    "Im arresting you, under section 30 for unlawful possesion of a laser with intent to mount it on your gun while in a public place,
    :D


  • Registered Users, Registered Users 2 Posts: 649 ✭✭✭sidneyreilly


    kdouglas wrote: »
    if you had it in your pocket you'd be charged with alot more than intent to mount a laser

    True:D But you get my point, its an "in context" situ.


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  • Registered Users, Registered Users 2 Posts: 3,341 ✭✭✭Fallschirmjager


    KD i am not sure if this is off the topic and if it is feel free to remove it dude but i do have one other closely related issue.

    the power of a lot of the current attachable lasers are meant for hollywood like effects (visible beam etc). now i know they all have a beam but my issue would be more related to health and safety. shining a 635nm laser in your back garden for a laugh is one thing, but using it in game is a whole different matter. by and large we always try to limit exposuse which normally means the only visible part is our head. considering some of the later brands of laser are strong enough to damage eyesight, should we not decide, to ban them in game anyways.

    dont get me wrong, i love the idea of them as well, but not at the expense of someones eyesight...


  • Registered Users, Registered Users 2 Posts: 4,612 ✭✭✭bullets


    Sorry guys I deleted my earlier reply/post.
    One of those replys that you are not sure to post or not to post,
    and keep editing over and over again and no matter
    what way you word it wont keep everyone happy!!! :(

    I personally would not recommend them for skirmishing but
    for mounting on an AEG for fun or for giving it a look
    for display purposes I am all for it.

    The Charter on this board mentions not to discuss
    about the use and importation of laser pointers that are mountable
    and says they are illegal/restricted. I had deleted my reply
    cos I could not be arsed in arguing.

    Since there is a separate topic on this
    and by discussing if they are legal or not legal
    I am guessing it does not breech discussing importing or using.
    so will have re-posted it.

    Sorry if this annoys anyone .....
    People keep saying here that Laser sights are illegal
    yet if you look at the photos thread here you will see AEG's with
    them attached. If you goto anyplace thats selling el-cheapo airsoft
    products you will find laser sights attached on some of them.


    It is of my opinion that they are perfectly Legal.
    I have yet to see any legal documents worded to
    say they are 100% Legal or 100% illegal or restricted.

    The firearms act has nothing about Laser pointers/Laser Sights in
    its definitions. Light emmiting telescopic sights yes! Lasers on their
    own as in not part of a telescope sight NO.

    The firearms act can be interpreted is different ways
    as its written vaguely. Every time the subject of laser pointers or sights
    attached to either a fire arm or airsoft comes up the same bit of
    the firearms act keeps getting quoted.

    Section 1 (1) (g)(i)
    Definitions and interpretation.
    (g) except where the context otherwise requires, any component part of any article referred to in any of the foregoing paragraphs and, without prejudice to the generality of the foregoing, the following articles shall be deemed to be such component parts:
    (i) telescope sights with a light beam, or telescope sights with an electronic light amplification device or an infra-red device, designed to be fitted to a firearm specified in paragraph (a), (b), (c) or (e),

    The wording used in the firearms act clearly used the word "telescope sights"
    Laser sights are not telescope or telescopic sights and do not fall into any
    category defined in the firearms act.

    When I read this section of the firearms act and particularly this section
    my interpretation of it is that this paragraph it to cover telescopic sights
    with laser range finding capabilities build into it or telescopic sights with
    night vision or IR capabilities built into it.

    I own a laser range finder. But a telescopic sight with a laser range finder built in is restricted.

    I own night vision equipment. But a telescopic sight with night vision is
    restricted.

    I own a laser pointer. A telescopic sight with a laser pointer build in is
    restricted. ONLY that a laser pointer on a firearm or airsoft on its own that
    is not part of a telescopic sight does not fall into the definitions of anything
    in the firearms act therefore not restricted.

    People are up in arms about if a laser pointer/sight is Legal or not but:
    A laser sight is NOT telecope/telescopic but it is a Light beam.

    People are perfectly fine with red did scopes but:
    A red dot sight is not telecope/telescopic it also uses a Light beam
    the difference bing that the light it projected onto the glass of the sight
    and not directly at the target itself.

    To make a long story short you could say that Laser Sights were perfectly
    legal depending on the interpretation of the firearms act.

    But with that said this line "without prejudice to the generality of the foregoing" is worrying as it could mean in a court of law the arguement
    could swing both ways. I dont wish anyone to have to go to court
    to prove either side of the argument I am only offering my opinion
    on my understanding of the law from reading the firearms act.

    My Cousin is a Solicitor I don't talk to her much but next time I meet
    her I am gonna print the fireams act out and discuss with her to see
    what her professional opinion would be and what would and would not
    hold up in court. (it wont be anytime soon as have not seen her in a few months)

    ~B


  • Registered Users, Registered Users 2 Posts: 6,414 ✭✭✭kdouglas


    KD i am not sure if this is off the topic and if it is feel free to remove it dude but i do have one other closely related issue.

    the power of a lot of the current attachable lasers are meant for hollywood like effects (visible beam etc). now i know they all have a beam but my issue would be more related to health and safety. shining a 635nm laser in your back garden for a laugh is one thing, but using it in game is a whole different matter. by and large we always try to limit exposuse which normally means the only visible part is our head. considering some of the later brands of laser are strong enough to damage eyesight, should we not decide, to ban them in game anyways.

    dont get me wrong, i love the idea of them as well, but not at the expense of someones eyesight...

    a fair point, does anyone know the legal maximum output power of a laser in ireland?


  • Closed Accounts Posts: 2,323 ✭✭✭Spitfire666


    dont quote me but from what i understand, a key part in the act is COMPONENT part, so a lazer wouldnt be a componant part just as having a set of grips from a pistol wouldnt get you in trouble.


  • Registered Users, Registered Users 2 Posts: 5,986 ✭✭✭ambro25


    dont quote me but from what i understand, a key part in the act is COMPONENT part, so a lazer wouldnt be a componant part just as having a set of grips from a pistol wouldnt get you in trouble.

    By your logic, how does the following -

    the following articles shall be deemed to be such component parts:
    (i) telescope sights with a light beam, or telescope sights with an electronic light amplification device or an infra-red device, designed to be fitted to a firearm specified in paragraph (a), (b), (c) or (e),


    stack up, then? ;)

    Me loves discussing greyness :D


  • Registered Users, Registered Users 2 Posts: 4,612 ✭✭✭bullets


    I totally agree with Spitfire666 here.

    For me a Component part is a part of a firearm
    where without it the firearm would not function

    for the Airsoft sport here in Ireland a Mountable Laser pointer
    is not a component part of a fire arm.

    Because an airsoft is not a firearm!!!!
    and a laser pointer does not form any part of the
    mechinism to make it function/operate be it an airsoft or a firearm.

    ~B


  • Closed Accounts Posts: 2,323 ✭✭✭Spitfire666


    thats what im not sure about. i think what its saying is that the items mentioned are specificall catagorized as componant parts for the purpose of the act.


  • Registered Users, Registered Users 2 Posts: 6,414 ✭✭✭kdouglas


    bullets: the issue before arose from the fact that the laser can still be bolted onto a real firearm even if it is designed for airsoft use due to the fact that they use the same type of mounts


  • Closed Accounts Posts: 2,323 ✭✭✭Spitfire666


    but by that logic, so can rail guards, fore grips, stocks etc.......

    And in one case i have seen, a silencer.


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  • Registered Users, Registered Users 2 Posts: 4,612 ✭✭✭bullets


    kdouglas wrote: »
    bullets: the issue before arose from the fact that the laser can still be bolted onto a real firearm even if it is designed for airsoft use due to the fact that they use the same type of mounts

    KD at any time feel free to delete anything you deem to be
    inappropriate to the airsoft board. I am not trying to cause
    any negative waves here.

    (I love lasers since I was a kid regardless of what they are stuck to or
    for what their purpose is. I am waiting for the day
    when I can save up to buy one thats visable in
    broad day light. I have ZERO purpose for having one
    other than wanting one)


    sellotape an ordinary laser pointer that anyone can buy legally
    in the pound shop/euro store to an Airsoft without any mounts
    at all are you breaking the law or not? yes or no?

    stick the same laser pointer in a mount that lets you put
    it on an airsoft rail or a rail on a real steel fireram
    are you breaking the law or not? yes or no?

    I honesty thing nobody can place their hand on their heart
    and tell us for sure without a doubt yes or no.
    I dont think lawyers/solicitors/barristers can 100& answer those
    questions. It probably all falls down to whatever an individual Judge in a court
    or law "thinks" due to having no absolute clear wordings in our actual law.

    ~B


  • Registered Users, Registered Users 2 Posts: 1,451 ✭✭✭thehomeofDob


    bullets wrote: »

    (I love lasers since I was a kid regardless of what they are stuck to or
    for what their purpose is. I am waiting for the day
    when I can save up to buy one thats visable in
    broad day light. I have ZERO purpose for having one
    other than wanting one)

    Like a 75mw green laser? I got one sent from the states, don't know if it went through customs though. Beautiful things alright.


  • Registered Users, Registered Users 2 Posts: 4,612 ✭✭✭bullets


    Like a 75mw green laser? I got one sent from the states, don't know if it went through customs though. Beautiful things alright.

    Yeah a genuine one will burn through a black plastic bag!!!
    So it definitively NOT the type of thing for an AEG.

    A lot are only lesser powered laser diodes that are suped up to
    output more than they can handle and are often sold cheaper.
    I keep meaning to buy one but end up spending the money on other
    things.

    Blue and Yellow lasers are more expensive again and are out of my
    price range.

    ~B


  • Closed Accounts Posts: 985 ✭✭✭Mark_Sc


    Don't know if anyone has mentioned this... but it does say thet it has to be sight/laser/whatever DESIGNED FOR USE WITH A FIREARM. I'd say all of the laser pionters available from shops that specialise in airsoft would never be used on RS or at least aren't designed to... understand what i'm getting at?


  • Registered Users, Registered Users 2 Posts: 657 ✭✭✭conor-mr2


    ambro25 wrote: »

    the following articles shall be deemed to be such component parts:
    (i) telescope sights with a light beam, or telescope sights with an electronic light amplification device or an infra-red device, designed to be fitted to a firearm specified in paragraph (a), (b), (c) or (e),

    Are airsoft deemed firearms if they are under 1 joule?

    If they are not then surely laser pointers attached to an airsoft item could be deemed legal.

    Any ideas here lads?


  • Closed Accounts Posts: 985 ✭✭✭Mark_Sc


    No we've been through this... they're NOT firearms if under 1J!
    So anything designed for an airsoft gun(granted it'd have to be leagal in Ireland)


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  • Registered Users, Registered Users 2 Posts: 657 ✭✭✭conor-mr2


    Mark_Sc wrote: »
    No we've been through this... they're NOT firearms if under 1J!
    So anything designed for an airsoft gun(granted it'd have to be leagal in Ireland)


    I should have added that it was a rhetorical question :D

    My point was that I also believe laser pointers attached to airsoft are not illegal


  • Registered Users, Registered Users 2 Posts: 36,064 ✭✭✭✭o1s1n
    Master of the Universe


    kdouglas wrote: »
    a fair point, does anyone know the legal maximum output power of a laser in ireland?

    I've been trying to find this out myself. The astronomy guys I asked use them for star pointing and seem to think up to 5mw is legal. (Although that's what they need for star pointing so er... possibly influencing their ideas) A boards.ie user I asked who was a bit more knowledgeable in the subject said the European legal output level is only 1mw.

    Low powered red lasers like these won't permanently damage your eyesight. Either will green lasers up to 5mw. However, shining them in peoples eyes or using them at a skirmish still wouldn't be the safest thing to do.

    Above 5mw and they start getting dangerous. 100mw or thereabouts can burn through black tape.
    Like a 75mw green laser? I got one sent from the states, don't know if it went through customs though. Beautiful things alright.

    At possibly 75 times the legal limit, that was extremely dodgy. Don't discuss it here.


  • Closed Accounts Posts: 985 ✭✭✭Mark_Sc


    sorry Conor, i'm quite tired and so slow on the pick up...
    if you put one of these on you'd be breaking the law
    http://www.rsov.com/product_info.php?products_id=386&osCsid=ae21a6fbf140a5dfe52a67320eef4068


  • Closed Accounts Posts: 17,163 ✭✭✭✭Boston


    kdouglas wrote: »
    a fair point, does anyone know the legal maximum output power of a laser in ireland?

    There isn't one, as it depends on context. Guy in the office bought an optical drive there recently which can etch an image into plastic. I don't know the exact power output but it had to be well over 5mW.


  • Registered Users, Registered Users 2 Posts: 657 ✭✭✭conor-mr2


    Mark_Sc wrote: »
    sorry Conor, i'm quite tired and so slow on the pick up...
    if you put one of these on you'd be breaking the law
    http://www.rsov.com/product_info.php?products_id=386&osCsid=ae21a6fbf140a5dfe52a67320eef4068


    Ah no worries man!! And at 650quid I wont be putting one of them on my airsofters any time soon Im afraid. Pretty neat though!!


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  • Registered Users, Registered Users 2 Posts: 36,064 ✭✭✭✭o1s1n
    Master of the Universe


    Boston wrote: »
    There isn't one, as it depends on context. Guy in the office bought an optical drive there recently which can etch an image into plastic. I don't know the exact power output but it had to be well over 5mW.

    Well it's all context yes. For all purposes concerned, we're discussing laser pointers. A laser pointer is going to have a different maximum legal output than an optical drive as the latter can't be used to blind someone from across the street.

    For all it's worth, here's the wiki entry on European laser pointer power

    The output power of a laser pointer is measured in milliwatts (mW). In Europe/UK the legal requirement is that laser pointer output not exceed 1 mW; in USA this output is limited to 5 mW for presentation lasers

    I can only assume Ireland falls into that too. Really haven't a clue though.


  • Closed Accounts Posts: 17,163 ✭✭✭✭Boston


    Those are requirements on the manufacturer, its another matter as to whether or not its illegal to have a laser pointer with a power rating greater then whats specified for manufacture, I doubt it is.


  • Closed Accounts Posts: 9,330 ✭✭✭Gran Hermano


    Plenty of info on lasers and safety in airsoft on Arnie's here


  • Registered Users, Registered Users 2 Posts: 207 ✭✭Hunter1100


    Plenty of info on lasers and safety in airsoft on Arnie's here

    The info on arnie's is a bit basic there are 3 sub groups in the class 3
    3A, 3B* and 3B**
    3A is safe as long as you don't stare into the laser. Your natural blinking reaction should protect you from accidental viewing. The other two groups require eye protection as far as I know.


  • Registered Users, Registered Users 2 Posts: 5,984 ✭✭✭NakedDex


    I used to do a lot of work with lasers and the power output allowed depends on use.
    General purpose lasers (not lazers, that bugs the hell out of me) are less than or equal to 1mW. These are your average laser pointers and presentation remotes. General purpose meaning something you can buy off the shelf, stick a battery in and use immediately.

    More powerful ones can be ordered from some places who, as far as I know, are registered as selling them. Limit here is about 5-8mW from what I remember. These are used for certain applications like, as O1s1n said, astronomy. These are termed designators rather than pointers (not totally sure why).

    Laser modules can be obtained up to approximately 20mW and are used for a variety of electronic and industrial applications. I've orderd and used several modules in the past from 1mW up to 18mW for various applications from security systems to refractor rigs and boroscopes. They're expensive and need to be given a power supply, control module and some form of pcb or mount.

    Beyond 20mW and you're into unsafe powers. Hell, even my 18mW one was something I had to be very careful with as the laser beam itself was quite hot if left unchecked. However, the type of module you find in lightscribe dvd burners and blu-ray drives/burners are very high and (if you know what you're doing) don't take a lot of wizardry to alter and use. I've seen it being done and quite frankly I find it dangerous. Those grades are designed to cut, burn or heat an item very quickly and I have seen laser burns on skin and corneas.

    Laser burns on skin by the way, are generally so hot you don't feel it, you smell the skin searing. This is because a high power laser will cauterise the wound as it goes. Hence the invention of laser scalpels in medicine.


    Brief rules of thumb with lasers.
    1) If you can see the beam, it's too powerful.
    2) Don't look, even at an angle, into the diode. Ever.
    3) If you must play with them for whatever reason (I discourage it), 5mW is what you should class as your safe threshold. A decent 5mW module will cast a visible dot (not beam) over about 150-200meters. More than enough for anyone, including the military.
    4) Green lasers are illegal to buy because their wavelength is easier to damage the cornea with as well as them starting off in power at 5mW. Standard red beams are approx 635nm in wavelength.
    5) NEVER put a lens of any sort in front of it.

    Lastly, and most importantly.
    6) They're not toys, treat them with respect.


  • Registered Users, Registered Users 2 Posts: 36,064 ✭✭✭✭o1s1n
    Master of the Universe


    Excellent post Nakeddex, thanks. Exactly the information I was looking for.


  • Registered Users, Registered Users 2 Posts: 24 reaper7


    NakedDex wrote: »
    I used to do a lot of work with lasers and the power output allowed depends on use.
    General purpose lasers (not lazers, that bugs the hell out of me) are less than or equal to 1mW. These are your average laser pointers and presentation remotes. General purpose meaning something you can buy off the shelf, stick a battery in and use immediately.

    More powerful ones can be ordered from some places who, as far as I know, are registered as selling them. Limit here is about 5-8mW from what I remember. These are used for certain applications like, as O1s1n said, astronomy. These are termed designators rather than pointers (not totally sure why).

    Laser modules can be obtained up to approximately 20mW and are used for a variety of electronic and industrial applications. I've orderd and used several modules in the past from 1mW up to 18mW for various applications from security systems to refractor rigs and boroscopes. They're expensive and need to be given a power supply, control module and some form of pcb or mount.

    Beyond 20mW and you're into unsafe powers. Hell, even my 18mW one was something I had to be very careful with as the laser beam itself was quite hot if left unchecked. However, the type of module you find in lightscribe dvd burners and blu-ray drives/burners are very high and (if you know what you're doing) don't take a lot of wizardry to alter and use. I've seen it being done and quite frankly I find it dangerous. Those grades are designed to cut, burn or heat an item very quickly and I have seen laser burns on skin and corneas.

    Laser burns on skin by the way, are generally so hot you don't feel it, you smell the skin searing. This is because a high power laser will cauterise the wound as it goes. Hence the invention of laser scalpels in medicine.


    Brief rules of thumb with lasers.
    1) If you can see the beam, it's too powerful.
    2) Don't look, even at an angle, into the diode. Ever.
    3) If you must play with them for whatever reason (I discourage it), 5mW is what you should class as your safe threshold. A decent 5mW module will cast a visible dot (not beam) over about 150-200meters. More than enough for anyone, including the military.
    4) Green lasers are illegal to buy because their wavelength is easier to damage the cornea with as well as them starting off in power at 5mW. Standard red beams are approx 635nm in wavelength.
    5) NEVER put a lens of any sort in front of it.

    Lastly, and most importantly.
    6) They're not toys, treat them with respect.

    Thanks for that NakedDex as I was just about to order a green laser from RSOV :(. Better change it to a red one.


  • Registered Users, Registered Users 2 Posts: 36,170 ✭✭✭✭ED E


    Now thats the kind of person thats usefull to have around. Good Boy ND:p


  • Registered Users, Registered Users 2 Posts: 1,451 ✭✭✭thehomeofDob


    +1 to Nakeddex. I didn't know what the law stated with regards to the 75mw green laser I have now, but to anyone out there, from experience, they are not to be toyed with. Great great fun, absolutely a blast to use. However, I've a tiny burn near the centre of my left retina due to a half second exposure - reflected off a mirror approx 3ft away, so 6ft total distance. Had more money than sense when I bought it.

    Back on topic, I've used 5mw green lasers - but even then, using them in a skirmish would be disorentating if it was shone in someones eye. No permanent damage, as I've had it happen myself, but it does leave you with those colour specs you get from looking at a lightbulb. They'd be great for an airsoft video/film, but too much hassle for a skirmish as you'd need to high a power too see in the daylight outside.


  • Registered Users, Registered Users 2 Posts: 5,984 ✭✭✭NakedDex


    Quick update, I checked up on the laser pointer versus laser designator naming difference. Laser pointers are the <1mW units where as the laser designators are the 1.001mW to 5mW units. The naming difference denotes the high power and drastically extended range.
    Note if you purchase a laser module, this is not the case. Pointers/Designators are names given only to non-oem, finished and enclosed products.


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