Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Buy, Sell, & Trade



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 11-10-2010, 08:08 PM #1
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default FS: 130-160mW 445nm Constant-on Pen & 1x 532nm diffraction grating pointer left!

I have for sale a few projects I've been working on and a few cheap greenies I have to get rid of.

1. One available - 5mW (manufacturer rated) 1xAAA mini greenies with diffraction grating cap. Actual power is 10-40mW with a fresh battery.
$13.50 each shipped. If added to another order, price is reduced $2.


__________________


2. SOLD - 50mW 532nm (manufacturer rated) 2xAAA Newwish black and silver rubber grip pens. Actual power is 30-45mW average with fresh batteries. Often peak above 50mW.
SOLD. If added to another order, price is reduced $2.




__________________



The Good Stuff:
These are not intended to be "burners" but rather bright "pointers." This does not mean they are ok to be used irresponsibly or carelessly. They do have the capacity to burn. Always be aware of your audience and use lasers only in a controlled environment. Use appropriate laser safety goggles when working with Class IIIb laser devices.


3. SOLD - 300mW 655nm 2xAAA pen. Constant on/off forward tail-cap switch, V5 flex drive, LOC diode, 650nm AR coated glass aspheric lens, & AR coated aperture window.
The focus is fixed to keep it solid and simple. This laser can be run continuously at room temperature for longer than most compact lasers of this power. I recommend 2 minutes on with a brief cool-down to be safe. Comes with foam case. I recommend using a silicone tail-cap to protect the aperture if this laser is stored in a dusty environment or a pocket. Avoid touching the glass aperture window.
Note: LOC and LCC red laser diodes are susceptible to damage from beam reflection. NEVER direct the laser beam back into the aperture of this laser.
SOLD (additional shipping services can be added at buyer's expense).




__________________


4. SOLD 130mW 445nm 2xAAA pen. Constant on/off forward tail-cap switch, V5 flex drive, A140 diode, 405nm AR coated 3-element glass lens, & AR coated aperture window.
The focus is fixed to keep it solid and simple. I recommend 2 minutes on with a brief cool-down to be safe. Comes with foam case. I recommend using a silicone tail-cap to protect the aperture if this laser is stored in a dusty environment or a pocket. Avoid touching the glass aperture window.

SOLD (additional shipping services can be added at buyer's expense).





__________________



5. On hold.



Last edited by RA_pierce; 12-18-2010 at 08:23 AM.
RA_pierce is online now   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 11-10-2010, 08:20 PM #2
DJNY's Avatar
Class 4 Laser
 
Join Date: Nov 2009
Location: Austria
Posts: 5,996
Rep Power: 987
DJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond repute
DJNY DJNY is offline
Class 4 Laser
DJNY's Avatar
 
Join Date: Nov 2009
Location: Austria
Posts: 5,996
Rep Power: 987
DJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond reputeDJNY has a reputation beyond repute
Default Re: FS: 445nm, 650nm, 532nm

Great looking builts RA!!
__________________
405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


- - - - - - - - -
Interested? >> Click onto the laser titles for more information
- - - - - - - - -


Note that Imageshack is automatically resizing some of my older
pictures back to original full-size after a while.
DJNY is offline   Reply With Quote
Old 11-10-2010, 08:49 PM #3
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: FS: 445nm, 650nm, 532nm

How tough would it be to tweak the pot on the 445 to get it to around 90mW?
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit
Tikilaser is offline   Reply With Quote
Old 11-10-2010, 08:56 PM #4
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: FS: 445nm, 650nm, 532nm

Quote:
Originally Posted by Tikilaser View Post
How tough would it be to tweak the pot on the 445 to get it to around 90mW?
It would not be "hard," but I'd rather sell it as it is. Making adjustments after it's already finished opens up the possibility of mistakes and accidents.
90mW isn't much safer than 130-160mW anyway.
Thanks for your interest.
RA_pierce is online now   Reply With Quote
Old 11-10-2010, 08:58 PM #5
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: FS: 445nm, 650nm, 532nm

I know its not much safer, and I didnt mean for you, I meant after shipped, but seeing as it is probably <150mW its fine. Im just tired of these 1W 445s....No practical use at all....
By the way is it true that 445 can cause macular degeneration over time or is that just a rumor?
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit
Tikilaser is offline   Reply With Quote
Old 11-10-2010, 09:07 PM #6
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: FS: 445nm, 650nm, 532nm

Quote:
Originally Posted by Tikilaser View Post
I know its not much safer, and I didnt mean for you, I meant after shipped, but seeing as it is probably <150mW its fine. Im just tired of these 1W 445s....No practical use at all....
By the way is it true that 445 can cause macular degeneration over time or is that just a rumor?
The laser can be taken apart but it's not particularly easy to do. It would be difficult to accomplish without potentially damaging the finish or some other components of the laser.
I agree with you on the absurdly high powered 445s. That's why I'm offering this alternative.
When cold, it peaks at ~150-160mW. As it warms up, power slowly drops to the 140's. I've tested it for a few continuous 2 minute cycles.

I've never seen "proof" of the long term effects of 445nm laser exposure or the "blue-light hazard" but from what I've read, it makes sense and it is generally accepted. Keep in mind that prolonged exposure to an intense light source is NEVER good for your eyes. At the lower end of Class IIIb, I think that the chances of long-term damage is slim, assuming the usage of said device is "safe."
RA_pierce is online now   Reply With Quote
Old 11-10-2010, 09:09 PM #7
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: FS: 445nm, 650nm, 532nm

Ok, so looking at the dot (not staring, but moving of course) is ok for around a minute without any long term side affects? if so, Ill Pm you soon about it I think daguin said something on the 1W's too in another thread...
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit
Tikilaser is offline   Reply With Quote
Old 11-10-2010, 09:17 PM #8
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: FS: 445nm, 650nm, 532nm

Quote:
Originally Posted by Tikilaser View Post
Ok, so looking at the dot (not staring, but moving of course) is ok for around a minute without any long term side affects? if so, Ill Pm you soon about it I think daguin said something on the 1W's too in another thread...
I'm sure if it is used casually (but safely, of course) you will be ok.
It's still a good idea to have some safety goggles though. Get some if you don't already have them. Even cheap protection is better than no protection.

All things considered, it won't be any more dangerous than your 6X @ 180mA listed in your signature.
RA_pierce is online now   Reply With Quote
Old 11-10-2010, 09:20 PM #9
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: FS: 445nm, 650nm, 532nm

Ok, and yes ive got some goggles (OD2) im considering getting some OD 3 but figured overkill, esp. cause my current ones are LR4's from OEM and usually the goggles are "overspec" overspec isnt the right term probably but you get the idea. This describes the blue light hazard perfectly: Artificial Lighting and the Blue Light Hazard
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit
Tikilaser is offline   Reply With Quote
Old 11-10-2010, 09:45 PM #10
Chelios's Avatar
Junior Member
 
Join Date: Sep 2010
Posts: 22
Rep Power: 0
Chelios is just really niceChelios is just really niceChelios is just really niceChelios is just really niceChelios is just really nice
Chelios Chelios is offline
Junior Member
Chelios's Avatar
 
Join Date: Sep 2010
Posts: 22
Rep Power: 0
Chelios is just really niceChelios is just really niceChelios is just really niceChelios is just really niceChelios is just really nice
Default Re: FS: 445nm, 650nm, 532nm

Nice builts!
I was looking for something like your red/blue one but from wickedlasers, since they have the best look & an on/off button at the side.

However, your builts are beautiful.

I am interested in the red one.
However, it seems that its dot isn't well focussed at all, it seems to have lots of "splash". Is that so?
What's its divergence?

Do you ship to europe?
__________________
Calculate divergence, beamsize and focal length with LPC
1W 447nm spartan laser
English is not my language.
Chelios is offline   Reply With Quote
Old 11-10-2010, 09:48 PM #11
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: FS: 445nm, 650nm, 532nm

Oh nonono read this http://laserpointerforums.com/f65/32...-s3-56289.html
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit
Tikilaser is offline   Reply With Quote
Old 11-10-2010, 09:51 PM #12
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: FS: 445nm, 650nm, 532nm

Quote:
Originally Posted by Chelios View Post
Nice builts!
I was looking for something like your red/blue one but from wickedlasers, since they have the best look & an on/off button at the side.

However, your builts are beautiful.

I am interested in the red one.
However, it seems that its dot isn't well focussed at all, it seems to have lots of "splash". Is that so?
What's its divergence?

Do you ship to europe?
The beam is very tight. Divergence is low at around 0.6mRad with a beam diameter of 4mm at aperture.
The "splash" you see in the pictures is a result of the camera.
I can get a better picture of the beam profile if you'd like.

I can ship internationally but the buyer will have to pay additional shipping, duty/tax fees. Also, I will not be responsible for any customs entanglements.
I can ship via UPS or USPS. USPS is default for domestic (USA) orders.
RA_pierce is online now   Reply With Quote
Old 11-10-2010, 10:00 PM #13
Chelios's Avatar
Junior Member
 
Join Date: Sep 2010
Posts: 22
Rep Power: 0
Chelios is just really niceChelios is just really niceChelios is just really niceChelios is just really niceChelios is just really nice
Chelios Chelios is offline
Junior Member
Chelios's Avatar
 
Join Date: Sep 2010
Posts: 22
Rep Power: 0
Chelios is just really niceChelios is just really niceChelios is just really niceChelios is just really niceChelios is just really nice
Default Re: FS: 445nm, 650nm, 532nm

Tikilaser:

I'm not interested in the arctic (check my sig)
However the other 'smaller' lasers from wickedlasers always looked very nice, like the current E2 or E3 series. Thats the type of laser I'm looking for.

RA_pierce:

Okay now that sounds nice.
If its not too much of an effort I would love -0.6mRad instead of 0.6mRad.
I live in europe, what do you expect the shipping cost to be for tracked / fast shipping?
__________________
Calculate divergence, beamsize and focal length with LPC
1W 447nm spartan laser
English is not my language.
Chelios is offline   Reply With Quote
Old 11-10-2010, 10:12 PM #14
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: FS: 445nm, 650nm, 532nm

Quote:
Originally Posted by Chelios View Post
RA_pierce:

Okay now that sounds nice.
If its not too much of an effort I would love -0.6mRad instead of 0.6mRad.
I live in europe, what do you expect the shipping cost to be for tracked / fast shipping?
I can adjust it for negative divergence but it increases the divergence in the far field. With the optics being used, ~0.5-0.6mRad is the lowest I can get.
May I ask why you prefer to have a focal point?

If you can give me your country and zip code I can get a quote.
Would you prefer UPS or USPS?
RA_pierce is online now   Reply With Quote
Old 11-10-2010, 10:28 PM #15
Chelios's Avatar
Junior Member
 
Join Date: Sep 2010
Posts: 22
Rep Power: 0
Chelios is just really niceChelios is just really niceChelios is just really niceChelios is just really niceChelios is just really nice
Chelios Chelios is offline
Junior Member
Chelios's Avatar
 
Join Date: Sep 2010
Posts: 22
Rep Power: 0
Chelios is just really niceChelios is just really niceChelios is just really niceChelios is just really niceChelios is just really nice
Default Re: FS: 445nm, 650nm, 532nm

Quote:
Originally Posted by RA_pierce View Post
I can adjust it for negative divergence but it increases the divergence in the far field.
Hmmm... explain.
Isn't the dotsize of a -0,6mRad laser a little smaller at 100m than the dotsize of a 0,6mRad laser?

Quote:
Originally Posted by RA_pierce View Post
May I ask why you prefer to have a focal point?
Its just nice to have a focalpoint. And I thought it would make the dot smaller at lets say 100m than without focalpoint - as I said above.

Okay never mind the shipping cost now, shouldn't be a problem.

Edit: It's kinda bedtime now here in europe, I will post again tomorrow.
__________________
Calculate divergence, beamsize and focal length with LPC
1W 447nm spartan laser
English is not my language.

Last edited by Chelios; 11-10-2010 at 10:41 PM.
Chelios is offline   Reply With Quote
Old 11-10-2010, 10:52 PM #16
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: FS: 445nm, 650nm, 532nm

Quote:
Originally Posted by Chelios View Post
Hmmm... explain.
Isn't the dotsize of a -0,6mRad laser a little smaller at 100m than the dotsize of a 0,6mRad laser?


Its just nice to have a focalpoint. And I thought it would make the dot smaller at lets say 100m than without focalpoint - as I said above.

Okay never mind the shipping cost now, shouldn't be a problem.
With a focal point in the beam, the laser converges and then diverges again, obviously. This makes the beam smaller near the focal point, for example, around 4 to 5 meters. At about 10 meters, the diameter will be roughly the same as it would be if the beam were parallel with positive divergence, but at 15 meters, the negative divergence laser will have diverged more from the focal point and have a larger diameter than the parallel beam.
At least that is my understanding... sorry if it is hard to interpret, I did my best to explain.

If you want the focal point to burn, believe me, >300mW with a 4mm beam diameter is plenty for most burning tricks. And you can always use a convex lens to burn with.

Send me a PM if you are interested.
RA_pierce is online now   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 05:49 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC