B@rt
Flashaholic
You forgot the '/' in the last ...
[img]http://www.backdeckstudio.com/lasermods/highpower.jpg
[img]http://www.backdeckstudio.com/lasermods/highpower.jpg
High powered hand held lasers
- Thread starter the laser guy
- Start date
Help Support Candle Power Flashlight Forum
- Status
I'm the one who suggested to Dwight about chiming in on the CPF. My question is - Is there any reason, aside from potential legal ones, not to get the 51mw version and get a lower powered one? Battery life is not too much of a concern, but it would be nice if you could post run times for the different models and which ones can run off NiMH batteries.
Catdaddy
Enlightened
I am going all the way with the 51. I have two 5mw and I want/ NEED more!
I'll let everyone know how it is when it gets here.
John
I'll let everyone know how it is when it gets here.
John
yclo
Flashaholic*
Say, any chance of sending in a pointer for a "tune-up"?
e=mc²
Enlightened
Just a quick question:
Will this one light up or be visible on clouds at night. I'm not talking the cirrus or stratus types but the usually cumulous types that are around most nights here on the east coast. These are just fair weather types, not storm clouds. Anybody have any experience with "hitting the clouds at night?"
e-
Will this one light up or be visible on clouds at night. I'm not talking the cirrus or stratus types but the usually cumulous types that are around most nights here on the east coast. These are just fair weather types, not storm clouds. Anybody have any experience with "hitting the clouds at night?"
e-
GJW
Flashlight Enthusiast
I wouldn't know a cirrus from a cumulous if it bit me on the ankle but I can hit the low-lying clouds here on the west coast easily.
I had both a stock <5mw green laser and a modified 5mw green laser and could hit them with either.
I had both a stock <5mw green laser and a modified 5mw green laser and could hit them with either.
The_LED_Museum
*Retired*
I live in the retail core of a large city, and I can't see the spot on clouds with my 11.6mW green because there's too much light pollution.
The only time I've been able to see a spot on clouds is right after a major storm when there were very dense, fast moving clouds below a few hundred feet or so.
I'd imagine if you could get to a place far away from city lights, hitting the bottoms of stratus or nimbostratus (or any other dense cloud who's bottom lies a 1/2 mile to 1 mile above the surface, including some thunderheads) you might be able to see the spot at 5+ milliwatts.
A green laser of 50-75mW might be able to track a visible spot on higher clouds such as altocumulus, altostratus, or thick cumulus clouds. This would depend on cloud density, minimal light pollution, dark adaption, and atmospheric clarity between you and the target.
The only time I've been able to see a spot on clouds is right after a major storm when there were very dense, fast moving clouds below a few hundred feet or so.
I'd imagine if you could get to a place far away from city lights, hitting the bottoms of stratus or nimbostratus (or any other dense cloud who's bottom lies a 1/2 mile to 1 mile above the surface, including some thunderheads) you might be able to see the spot at 5+ milliwatts.
A green laser of 50-75mW might be able to track a visible spot on higher clouds such as altocumulus, altostratus, or thick cumulus clouds. This would depend on cloud density, minimal light pollution, dark adaption, and atmospheric clarity between you and the target.
D
**DONOTDELETE**
Guest
Hello,
I recently purchased a green laser from Dwight and it was awesome. It came out to be over 75mW power (as you can see from the picture he posted, that was my laser he built for me). The laser is magnificent, the beam is clearly visible in a bright green color. Also, you can take the laser outside and the beam is still visible, just absolutely amazing for a handheld. For instance, I took it outside and pointed it into the sky and I saw the beam just going and going. No matter where you use it inside or outside, it has great power. THANK YOU to Dwight for building it!!! Will to business again with you.
I recommend his lasers, you won't be disappointed.
I recently purchased a green laser from Dwight and it was awesome. It came out to be over 75mW power (as you can see from the picture he posted, that was my laser he built for me). The laser is magnificent, the beam is clearly visible in a bright green color. Also, you can take the laser outside and the beam is still visible, just absolutely amazing for a handheld. For instance, I took it outside and pointed it into the sky and I saw the beam just going and going. No matter where you use it inside or outside, it has great power. THANK YOU to Dwight for building it!!! Will to business again with you.
I recommend his lasers, you won't be disappointed.
Hehe - so hard to resist a new gadget. But I have to ask - what can/should I do with such a laser?
Also - how quickly would you get retina damage with 50-75mW? I have a 4 year old and I always tense out at the thought of what he could do with Papa's gadgets. I 'd like to know how much *protection* I'd need...
Best - Michel
Also - how quickly would you get retina damage with 50-75mW? I have a 4 year old and I always tense out at the thought of what he could do with Papa's gadgets. I 'd like to know how much *protection* I'd need...
Best - Michel
The_LED_Museum
*Retired*
<font size="2" face="Verdana, Arial">IMMEDIATELY - far faster than you can blink. A laser of thiis output is not a toy, and should not be used near children. At this power level, a reflection off a shiny metal surface like a flashlight reflector, aluminum kitchen foil, or a chrome car bumper could be enough to do you in if enough of the beam were still intact by the time it entered the eye. The wider the beam spreads out before it reaches you, the less the danger. So shining it on a steel pinball from 10 or 20 feet won't do anything bad to you, but shining it on a mirror at the same distance will.
Anything above 5mW CW is a Class IIIb laser according to the CDRH, and you'll need a permit in order to legally display its beam in public. What you do in the laboratory is your own business.
e=mc²
Enlightened
Hey Craig, while on the subject of HP Lasers, how much power and what wavelengths are needed to break human skin? I don't mean weapons grade, but just enough to cauterize the skin where it starts to burn. I know this will probably have to be done at close range, but my goal would be just for something along the lines of "tick removal". On my last trip to the Dermatologist's, he used a bluish colored laser to remove 3 ticks from my shin/ankle area. We have lots of ticks (not the nervous types!
)around these parts.
Thanks,
Ed
Thanks,
Ed
the laser guy
Newly Enlightened
Well here is an answer for ya....
I held the laser on my sking at 1".. I felt it start to burn me a little , like a pin pricking my skin. then at 12",3'5'. all the way to 8'. after that I could not detect it burning my skin.
It also took longer and longer to "feel" the laser on my skin. I needed to know this for my own experiments so I made the best test subject.
I am white as a ghost, so someone of a darker complexion may get burnt faster. I can burn black electrical tape and cut a radioshack shopping bag in half like butter from 6" away.
all on AAA alkaline cells!!
So like Craig says some goggles would be a good thing to get if you are shining it on the walls of your house under 14'. Thats my hipshot on it. When I am aligning critical parts I always wear eye protection against 532nm and 1064-808 scatter.
" Got Goggles?"
I held the laser on my sking at 1".. I felt it start to burn me a little , like a pin pricking my skin. then at 12",3'5'. all the way to 8'. after that I could not detect it burning my skin.
It also took longer and longer to "feel" the laser on my skin. I needed to know this for my own experiments so I made the best test subject.
I am white as a ghost, so someone of a darker complexion may get burnt faster. I can burn black electrical tape and cut a radioshack shopping bag in half like butter from 6" away.
all on AAA alkaline cells!!
So like Craig says some goggles would be a good thing to get if you are shining it on the walls of your house under 14'. Thats my hipshot on it. When I am aligning critical parts I always wear eye protection against 532nm and 1064-808 scatter.
" Got Goggles?"
Hi Dwight,
You're web site mentions $14 for shipping, I assume this is to US addresses.
1) Would you ship to the UK ?
2) If "yes", what is the shipping charge ?
Thanks
PS - Thought you'd been assimilated when I first saw that pic above
You're web site mentions $14 for shipping, I assume this is to US addresses.
1) Would you ship to the UK ?
2) If "yes", what is the shipping charge ?
Thanks
PS - Thought you'd been assimilated when I first saw that pic above
Bernhard
Newly Enlightened
Laserguy, about the laser that can slice black electrical tape and shopping bag, how much power? 51mW? or more? Can it be used to slice open electric cable insulator, like the thing the they use in movie "Critical Decision" (they use red laser instead of green)? If it can, how much it is? If the one with more than 75mW of power (as owned by "I own the beam") can do it easily, how much the price? if it is around $300, I will buy it...
Thanks the laser guy...
Thanks the laser guy...
star882
Enlightened
That is one powerful laser.
Problem is, it will char dark paper/cloth, so it will not work too good for presentations.
Also, it is too expensive for most people.
Problem is, it will char dark paper/cloth, so it will not work too good for presentations.
Also, it is too expensive for most people.
Albany Tom
Enlightened
<font size="2" face="Verdana, Arial">I've been to some presentations where this would have been a BIG improvement.Originally posted by star882:
That is one powerful laser.
Problem is, it will char dark paper/cloth, so it will not work too good for presentations.
Also, it is too expensive for most people.
Evan
Enlightened
How does mW increase translate to percieved brightness and length of throw?
Are your lasers intermittant only or for continuous use; how long can it be on
without overheating?
Do they depend on the internal resistance of AAAs, if run from a low impedance
3-4 volt supply, could they be damaged?
Are your lasers intermittant only or for continuous use; how long can it be on
without overheating?
Do they depend on the internal resistance of AAAs, if run from a low impedance
3-4 volt supply, could they be damaged?
yclo
Flashaholic*
Dwight,
How about a video of the laser cutting a plastic bag?
YC
How about a video of the laser cutting a plastic bag?
YC
the laser guy
Newly Enlightened
As to your reference to the CDRH......
Any U.S. laser display viewed by the public must follow CDRH regulations. The regulations cover both laser equipment and the performance site. Permission to vary from the regulations is given on a case-by-case basis, in a document called a "variance".
Only very small lasers (5 milliwatts or less) can be used in displays without a variance in it USA. The maximum power usable without a permit depends on the rules where you live. Because of the higher power necessary in 100mw laser light shows, a variance or other type of permit is almost always required.
All ILDA members doing laser shows in the United States are required to hold a current CDRH variance. ILDA members outside the U.S. are required to follow the regulations of the location in which they provide laser displays.
In other countries, the paperwork or permit required to produce a laser show for a public display has different names. In Canada for example, you must fill in and submit a "laser light show report". The BMRD then sends you a letter or fax acknowledging receipt of your notification.
Before I can ship anyone a laser they have to send me an email as well as fax, acknowledging what the intended use is, as well as, they have to make themselves aware of the CDRH's rules and regulations on the public display of lasers over 5mw and apply for the necessary variances in their community if needed.
This is however, not required for the purchase of 2watt 808nm fibercoupled diode pumps on ebay. In fact they sell 100watt units on there all the time with only a disclaimer that you cannot hold them responsiable for any damage yo do to yourself or to others. Imagine someone could have discharged a 50watt 1064nm laser, focused it and no one would have been able to see it, blinding every one in its path.
At least I take the time to fit IR filters of the best quality in my 5mw lasers. You would be suprised at the Low MPE rating I actually get out of mine.
I get a MPE rating of 1.72 at 15'. MPE is the maximum level of laser radiation that a person may be exposed to without adverse biological effects. The international laser safety standard, IEC-825, defines a short exposure as 2.5 mW per square centimetre. And this can vary from state to state but, this is currently the maximum adopted all U.S. States.
The other two manufacturers listed on the internet Extremelasers.com and Megalasers.com Just sell Lasers over 30mw and do so from overseas with impunity. They dont even care who they sell them to. At least I know who my customers are. what they are using them for ( as they state ). I also am the only one in the US that fixes them, according to the CDRH. to better than new safty specs. all with in the 5mw window.
I have had to detail everything to do to the CDRH in applying for a Manufacturer's license in their lengthy 7 page application.
The CDRH currently requires higher power U.S. lasers to bear labels reading "Warning: Laser radiation". The word "radiation" refers merely to the laser's light. This is not high-energy ionising "atomic" radiation, which is the more conventional use of the word .
The CDRH is considering changing the wording to the more appropriate "Warning: Laser light."
I have removed my links to my information page. Being that you think I am building pilot blinding devices that are intended soley for that purpose. Which I am not. That I sell to kids, Which I am not. If they lie to me in thier use of it, how is that my problem? They will just get a 10watt unit off of EBAY and burn their own retina's on accident with only the rest of society to be burdened with their care until they die. It's ok though, the off country dealers ( not manufacturers) megalasers and extremelasers sells cheap crap to anyone with cash without so much as an inquiry or care.
I know at least that I tried to.
Dwight
Any U.S. laser display viewed by the public must follow CDRH regulations. The regulations cover both laser equipment and the performance site. Permission to vary from the regulations is given on a case-by-case basis, in a document called a "variance".
Only very small lasers (5 milliwatts or less) can be used in displays without a variance in it USA. The maximum power usable without a permit depends on the rules where you live. Because of the higher power necessary in 100mw laser light shows, a variance or other type of permit is almost always required.
All ILDA members doing laser shows in the United States are required to hold a current CDRH variance. ILDA members outside the U.S. are required to follow the regulations of the location in which they provide laser displays.
In other countries, the paperwork or permit required to produce a laser show for a public display has different names. In Canada for example, you must fill in and submit a "laser light show report". The BMRD then sends you a letter or fax acknowledging receipt of your notification.
Before I can ship anyone a laser they have to send me an email as well as fax, acknowledging what the intended use is, as well as, they have to make themselves aware of the CDRH's rules and regulations on the public display of lasers over 5mw and apply for the necessary variances in their community if needed.
This is however, not required for the purchase of 2watt 808nm fibercoupled diode pumps on ebay. In fact they sell 100watt units on there all the time with only a disclaimer that you cannot hold them responsiable for any damage yo do to yourself or to others. Imagine someone could have discharged a 50watt 1064nm laser, focused it and no one would have been able to see it, blinding every one in its path.
At least I take the time to fit IR filters of the best quality in my 5mw lasers. You would be suprised at the Low MPE rating I actually get out of mine.
I get a MPE rating of 1.72 at 15'. MPE is the maximum level of laser radiation that a person may be exposed to without adverse biological effects. The international laser safety standard, IEC-825, defines a short exposure as 2.5 mW per square centimetre. And this can vary from state to state but, this is currently the maximum adopted all U.S. States.
The other two manufacturers listed on the internet Extremelasers.com and Megalasers.com Just sell Lasers over 30mw and do so from overseas with impunity. They dont even care who they sell them to. At least I know who my customers are. what they are using them for ( as they state ). I also am the only one in the US that fixes them, according to the CDRH. to better than new safty specs. all with in the 5mw window.
I have had to detail everything to do to the CDRH in applying for a Manufacturer's license in their lengthy 7 page application.
The CDRH currently requires higher power U.S. lasers to bear labels reading "Warning: Laser radiation". The word "radiation" refers merely to the laser's light. This is not high-energy ionising "atomic" radiation, which is the more conventional use of the word .
The CDRH is considering changing the wording to the more appropriate "Warning: Laser light."
I have removed my links to my information page. Being that you think I am building pilot blinding devices that are intended soley for that purpose. Which I am not. That I sell to kids, Which I am not. If they lie to me in thier use of it, how is that my problem? They will just get a 10watt unit off of EBAY and burn their own retina's on accident with only the rest of society to be burdened with their care until they die. It's ok though, the off country dealers ( not manufacturers) megalasers and extremelasers sells cheap crap to anyone with cash without so much as an inquiry or care.
I know at least that I tried to.
Dwight
the laser guy
Newly Enlightened
The Following Message was sent to me from my [email protected] mail,
this is the guys e-mail address and the above mail was my response to him.
[email protected]
Expert my *** LOL!! hahaha..
Man you know how many laws you are breaking? If you were an expert then you would NOT be selling these things because you would KNOW that it is illegal period -no discussion -the end. You are offering modified lasers that can really hurt someone and also more important blind a PILOT of an aircraft. Do you know who does what after you sell the pointer? No you do not. You are responsible though. By law you are responsible for each and every pointer out there that you modified.
You are nothing more then a greedy moron that is going to wind up hurting someone. I wonder how the CDRH would feel about my comments? I bet you they would agree 100% with me..
Anyway you still may email me for my lasser links....
Dwight
this is the guys e-mail address and the above mail was my response to him.
[email protected]
Expert my *** LOL!! hahaha..
Man you know how many laws you are breaking? If you were an expert then you would NOT be selling these things because you would KNOW that it is illegal period -no discussion -the end. You are offering modified lasers that can really hurt someone and also more important blind a PILOT of an aircraft. Do you know who does what after you sell the pointer? No you do not. You are responsible though. By law you are responsible for each and every pointer out there that you modified.
You are nothing more then a greedy moron that is going to wind up hurting someone. I wonder how the CDRH would feel about my comments? I bet you they would agree 100% with me..
Anyway you still may email me for my lasser links....
Dwight
- Status
