Old 09-18-2013, 09:45 PM #1
grainde's Avatar
Class 3B Laser
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
grainde grainde is online now
Class 3B Laser
grainde's Avatar
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
Exclamation 532 Collimated IR output

Just thought Id make a quick post about IR from 532 pens and lasers.

Most people seem to say that yes the IR is dangerous, but its not really too much of an issue as it is not collimated. Well I decided to take some pics to find out whether the IR was indeed collimated and focused with the 532.

In my recent review on a 301 laser I mentioned the IR component, which was basically all 1064 nm light. I also did a mini review for Kommed some time back for one of his ebay pens. Below are the graphs of the two lasers each with an IR filter:

532 ebay pen - Output 44 mW so 21 mW IR



301 laser - Output 91 mW so 19 mW IR



For the pictures I used my old canon 20D with a 10-22 EFS lens and a 77 mm B+W IR 093 filter. This filter blocks 100% of all visible light, but allows approx 15 % transmission at 810 nm and over 90 % above 1000 nm. Distance from camera to wall 1.5 m.

The first pic is actually composed of 3 different 532 lasers, but one (the control laser - Global Laser Firefly) is IR filtered, so you cant see it! (Order - Firefly : Kommed pen : 301 laser). Note: The firefly control laser confirms that 532 is completely blocked by the filter, this means the dots are purely IR.



The second and third photos are without and with the filter again on the 301 laser.




Finally I used photoshop to superimpose the photos and reduced the opacity of the 532 picture to show the IR dot beneath.



Zoomed in...





Conclusion: Yes the IR is extremely well collimated!! Please take care...
Attached Thumbnails
532 Collimated IR output-ir-component-1-2.jpg   532 Collimated IR output-ir-component-1.jpg   532 Collimated IR output-ir-component-2.jpg   532 Collimated IR output-ir-component-superimposed3.jpg   532 Collimated IR output-ir-component-superimposed4.jpg  

532 Collimated IR output-ir-component-superimposed2-1.jpg  


__________________
New to lasers & want some info on how to build a laser? Look here: Build a laser

Need info on goggles? Look here: Get safety goggles now!

FS Custom Sinner Host builds available now!


Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--

Last edited by grainde; 09-24-2013 at 09:05 AM.
grainde is online now   Reply With Quote


















Old 09-18-2013, 11:10 PM #2
TheDukeAnumber1's Avatar
Class 3R Laser
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,063
Rep Power: 22797
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
TheDukeAnumber1 TheDukeAnumber1 is offline
Class 3R Laser
TheDukeAnumber1's Avatar
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,063
Rep Power: 22797
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
Default Re: 532 Collimated IR output

I actually had wondered that for a while. GJ
__________________
“Absence of evidence isn't evidence of absence."
http://laserpointerforums.com/donations.htm
“The end of life is not to be happy, nor to achieve pleasure and avoid pain, but to do the will of God, come what may.”—Martin Luther King
TheDukeAnumber1 is offline   Reply With Quote
Old 09-19-2013, 02:33 AM #3
hwang21's Avatar
Class 3R Laser
 
Join Date: Mar 2013
Location: Illinois, USA
Posts: 2,351
Rep Power: 1614
hwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond repute
hwang21 hwang21 is offline
Class 3R Laser
hwang21's Avatar
 
Join Date: Mar 2013
Location: Illinois, USA
Posts: 2,351
Rep Power: 1614
hwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond repute
Default Re: 532 Collimated IR output

Nice job, thanks for the info
__________________
~405 | ~445 | ~447 | 457.9 | 465.8 | 472.7 | 473 | 476.5 | 487.986 | 496.5 | 501.7 | 514.5 | 532 | 543.5 | 593.5 | 594.1 | 604.6 | 609.07 | 611.9 | 632.816 | ~635 | ~650 | ~660 | ~780 | ~808

Full List Here: https://docs.google.com/spreadsheets...#gid=929099855


"Official WL Historian of LPF" ~Trevor
hwang21 is offline   Reply With Quote
Old 09-19-2013, 02:41 AM #4
Spooky's Avatar
Class 2 Laser
 
Join Date: Jun 2013
Location: Salisbury, Wilts,UK
Posts: 261
Rep Power: 83
Spooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond repute
Spooky Spooky is offline
Class 2 Laser
Spooky's Avatar
 
Join Date: Jun 2013
Location: Salisbury, Wilts,UK
Posts: 261
Rep Power: 83
Spooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond reputeSpooky has a reputation beyond repute
Default Re: 532 Collimated IR output

+1, great info, many thanks

cheers

Dave
Spooky is offline   Reply With Quote
Old 09-19-2013, 05:16 AM #5
NO4H99's Avatar
Class 2M Laser
 
Join Date: Sep 2013
Location: Las Vegas, NV
Posts: 553
Rep Power: 738
NO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond repute
NO4H99 NO4H99 is offline
Class 2M Laser
NO4H99's Avatar
 
Join Date: Sep 2013
Location: Las Vegas, NV
Posts: 553
Rep Power: 738
NO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond repute
Default Re: 532 Collimated IR output

Thanks so much, I've actually been searching for this info for months. +REP coming up

An IR dot with twice the diameter of the visible beam (which this one looks near to) has a NOHD four times smaller though, right? If so, it should be fairly safe at a distance of several yards.

Did both lasers have roughly the same infra-red divergence?

Thanks.
__________________
Currently own:
405 - 400mw O-like power rock
445 - 3.4w Rick trent C8
445 - 1.2 watt from TheJoker (review)

532 - 411mw Hulk Ultra from DL
532 - 125mw in generic host
532 - 50mw DIY in generic host
532 - 80mw DIY pen (from dx module)
532 - 30mw DIY pen (from dx module)
532 - 70mw cheap amazon pen

650 - 240mw from TheJoker


Have Owned:
532 - 115 mw from TheJoker
635 - 700 mw from TheJoker
650 - cheap amazon pen

Safety Glasses:
2x Cheap Uvex blue-blockers
2x Eagle Pair anti-reds

Seahorse SE-300 case

Radiant X4 LPM (review)
NO4H99 is offline   Reply With Quote
Old 09-19-2013, 08:31 AM #6
grainde's Avatar
Class 3B Laser
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
grainde grainde is online now
Class 3B Laser
grainde's Avatar
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
Default Re: 532 Collimated IR output

Quote:
Originally Posted by NO4H99 View Post
Thanks so much, I've actually been searching for this info for months. +REP coming up

An IR dot with twice the diameter of the visible beam (which this one looks near to) has a NOHD four times smaller though, right? If so, it should be fairly safe at a distance of several yards.

Did both lasers have roughly the same infra-red divergence?

Thanks.
Compare the size of the IR dot to pic 2. Its actually much smaller than the visible dot. The fuzzy light purple region around the white dot in the IR pic is scatter and interference. The scatter and interference region from the green is much larger - The sensitivity of the camera sensor to IR light will play a role here though as it is IR filtered, so the exposure for the IR pictures had to be increased to around 2 mins. In the last comparison IR photo and the one that was superimposed it was actually 5 mins! Please note the picture 2 will not show any IR, as the exposure was too short at 1/80.

From the pics it looks like the IR is actually more collimated and has a better divergence than the green, so the NOHD will be greater for the IR component.

Yes both lasers had a similar IR divergence, although the collimation and hence dot of the 301 laser was slightly better (? ). That can be seen in the first pic.
__________________
New to lasers & want some info on how to build a laser? Look here: Build a laser

Need info on goggles? Look here: Get safety goggles now!

FS Custom Sinner Host builds available now!


Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--

Last edited by grainde; 09-19-2013 at 09:04 AM.
grainde is online now   Reply With Quote
Old 09-20-2013, 05:06 AM #7
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,293
Rep Power: 211757
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,293
Rep Power: 211757
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: 532 Collimated IR output

Quote:
Originally Posted by grainde View Post
From the pics it looks like the IR is actually more collimated and has a better divergence than the green
Are we looking at the same pictures?
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 09-20-2013, 05:12 AM #8
NO4H99's Avatar
Class 2M Laser
 
Join Date: Sep 2013
Location: Las Vegas, NV
Posts: 553
Rep Power: 738
NO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond repute
NO4H99 NO4H99 is offline
Class 2M Laser
NO4H99's Avatar
 
Join Date: Sep 2013
Location: Las Vegas, NV
Posts: 553
Rep Power: 738
NO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond repute
Default Re: 532 Collimated IR output

To me, It looks like the green is collimated slightly better (the bright dot in the middle of the IR spot in the last pic). The green around it is just the diffuse reflection picked up by the camera, right?
__________________
Currently own:
405 - 400mw O-like power rock
445 - 3.4w Rick trent C8
445 - 1.2 watt from TheJoker (review)

532 - 411mw Hulk Ultra from DL
532 - 125mw in generic host
532 - 50mw DIY in generic host
532 - 80mw DIY pen (from dx module)
532 - 30mw DIY pen (from dx module)
532 - 70mw cheap amazon pen

650 - 240mw from TheJoker


Have Owned:
532 - 115 mw from TheJoker
635 - 700 mw from TheJoker
650 - cheap amazon pen

Safety Glasses:
2x Cheap Uvex blue-blockers
2x Eagle Pair anti-reds

Seahorse SE-300 case

Radiant X4 LPM (review)
NO4H99 is offline   Reply With Quote
Old 09-20-2013, 08:40 AM #9
grainde's Avatar
Class 3B Laser
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
grainde grainde is online now
Class 3B Laser
grainde's Avatar
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
Default Re: 532 Collimated IR output

Quote:
Originally Posted by NO4H99 View Post
To me, It looks like the green is collimated slightly better (the bright dot in the middle of the IR spot in the last pic). The green around it is just the diffuse reflection picked up by the camera, right?
No, I used photo shop to reduce the opacity of the green layer to around 30%. The bright white dot in the center is IR. You can see that in the other IR pics too. The actual bright white/green dot from the green was larger and would have obscured the IR and the IR scattering from the last pic, if I hadnt reduced its intensity by blending.

Edit: Can't see the problem? Compare pics 2 and 3 directly. There is a very bright white dot from the IR in the center of pic 3. There is a very bright white/green dot in the center of pic 2. The intensity of the green dot was reduced drastically in pic 4 to leave only the bright IR dot when they were superimposed. The center of the IR dot is around half that of the green dot. Pics 2 and 3 were exactly the same size, resolution and position so a direct comparison of dot sizes is possible. The IR is very well collimated and more so than the green. Ive just quickly zoomed in on the IR dot below (not to scale ie more than 100% crop so you cant compare by measuring the size with a ruler....) The scattering and interference area around the dot is much smaller than with the green and the multiple colours in the pic are due to high ISO noise...



Edit2: Ok I think I know what you are saying. You are including the scatter area around the bright white dot as the IR dot. The IR dot is the white region and the outer redish area is the scattering and interference. The size of the white dot (collimated area) + scattering is the same size as the white dot (collimated area) from the green. The green scattering and interference ie green area around the white/green dot from the green is far larger. The white dot in the center of the IR region has nothing to do with visible light as that has been completely filtered.

Edit3: Ok just spent half an hour cropping the images exactly to zoom in on the dots and enable a direct comparison.



Attached Thumbnails
532 Collimated IR output-ir-zoom-2.jpg   532 Collimated IR output-ir-zoomed-1-copy.jpg  
__________________
New to lasers & want some info on how to build a laser? Look here: Build a laser

Need info on goggles? Look here: Get safety goggles now!

FS Custom Sinner Host builds available now!


Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--

Last edited by grainde; 09-20-2013 at 11:32 AM.
grainde is online now   Reply With Quote
Old 09-20-2013, 03:09 PM #10
NO4H99's Avatar
Class 2M Laser
 
Join Date: Sep 2013
Location: Las Vegas, NV
Posts: 553
Rep Power: 738
NO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond repute
NO4H99 NO4H99 is offline
Class 2M Laser
NO4H99's Avatar
 
Join Date: Sep 2013
Location: Las Vegas, NV
Posts: 553
Rep Power: 738
NO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond reputeNO4H99 has a reputation beyond repute
Default Re: 532 Collimated IR output

OK, I see what you're saying. Thanks for spending the extra time to set me straight
__________________
Currently own:
405 - 400mw O-like power rock
445 - 3.4w Rick trent C8
445 - 1.2 watt from TheJoker (review)

532 - 411mw Hulk Ultra from DL
532 - 125mw in generic host
532 - 50mw DIY in generic host
532 - 80mw DIY pen (from dx module)
532 - 30mw DIY pen (from dx module)
532 - 70mw cheap amazon pen

650 - 240mw from TheJoker


Have Owned:
532 - 115 mw from TheJoker
635 - 700 mw from TheJoker
650 - cheap amazon pen

Safety Glasses:
2x Cheap Uvex blue-blockers
2x Eagle Pair anti-reds

Seahorse SE-300 case

Radiant X4 LPM (review)
NO4H99 is offline   Reply With Quote
Old 09-22-2013, 07:56 AM #11
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,293
Rep Power: 211757
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,293
Rep Power: 211757
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: 532 Collimated IR output

And how much of that is blooming? You said so yourself the filter you used blocks 90% of 810nm. The green will saturate the sensor and spill over into adjacent pixels. Cameras are not terribly accurate representations of lasers. We all know that.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 09-22-2013, 09:47 AM #12
grainde's Avatar
Class 3B Laser
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
grainde grainde is online now
Class 3B Laser
grainde's Avatar
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
Default Re: 532 Collimated IR output

Quote:
Originally Posted by Cyparagon View Post
And how much of that is blooming? You said so yourself the filter you used blocks 90% of 810nm. The green will saturate the sensor and spill over into adjacent pixels. Cameras are not terribly accurate representations of lasers. We all know that.
The IR exposure was over 5 mins so the sensor around the dot was also saturated in the IR pic. The filter actually blocks 80 - 85% at 810. The comparison is accurate enough and the point of the exercise, in case you forgot, was to show that the IR is collimated - This has been proven.
__________________
New to lasers & want some info on how to build a laser? Look here: Build a laser

Need info on goggles? Look here: Get safety goggles now!

FS Custom Sinner Host builds available now!


Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--
grainde is online now   Reply With Quote
Old 09-22-2013, 11:26 AM #13
BurningLaserGuy's Avatar
Class 2 Laser
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
BurningLaserGuy BurningLaserGuy is offline
Class 2 Laser
BurningLaserGuy's Avatar
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
Default Re: 532 Collimated IR output

If the laser have no IR colimation lens, that laser is a counterfeit one, and I really want to avoid them. 21mW of IR from a green laser is nasty for me. Thanks for the info, +1 from me.
EDIT 1:If I'm wrong please tell me.
__________________
532nm@15mW Laser Pen(dead)
532nm@~20mW Laser Pen


"What we can not speak about we must pass over in silence" (Ludwig Wittgenstein)...at least it supposed to be

Must read!!!:http://laserpointerforums.com/f44/co...ead-82066.html

Sometimes I'm so motivated to make a project that I could break wallnuts with a leaf. Sometimes.

Last edited by BurningLaserGuy; 09-22-2013 at 11:28 AM.
BurningLaserGuy is offline   Reply With Quote
Old 09-22-2013, 11:46 AM #14
grainde's Avatar
Class 3B Laser
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
grainde grainde is online now
Class 3B Laser
grainde's Avatar
 
Join Date: Jan 2012
Location: Alsace
Posts: 2,842
Rep Power: 927992
grainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond reputegrainde has a reputation beyond repute
Default Re: 532 Collimated IR output

21 mW is quite normal for the cheaper unfiltered 532's. My 5 mW ebay pen measured 44 mW, but half of that was IR!

The lens will collimate both the 532 and IR, but the focal plane of the IR will be slightly different.
__________________
New to lasers & want some info on how to build a laser? Look here: Build a laser

Need info on goggles? Look here: Get safety goggles now!

FS Custom Sinner Host builds available now!


Here is my old Kryton Groove FS thread!

100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--
grainde is online now   Reply With Quote
Old 09-22-2013, 03:29 PM #15
hwang21's Avatar
Class 3R Laser
 
Join Date: Mar 2013
Location: Illinois, USA
Posts: 2,351
Rep Power: 1614
hwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond repute
hwang21 hwang21 is offline
Class 3R Laser
hwang21's Avatar
 
Join Date: Mar 2013
Location: Illinois, USA
Posts: 2,351
Rep Power: 1614
hwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond reputehwang21 has a reputation beyond repute
Default Re: 532 Collimated IR output

So, once again, WL is wrong, or at least misleading: Why is IR Bad?
__________________
~405 | ~445 | ~447 | 457.9 | 465.8 | 472.7 | 473 | 476.5 | 487.986 | 496.5 | 501.7 | 514.5 | 532 | 543.5 | 593.5 | 594.1 | 604.6 | 609.07 | 611.9 | 632.816 | ~635 | ~650 | ~660 | ~780 | ~808

Full List Here: https://docs.google.com/spreadsheets...#gid=929099855


"Official WL Historian of LPF" ~Trevor
hwang21 is offline   Reply With Quote
Old 09-22-2013, 07:58 PM #16
KapHn8d's Avatar
Class 2M Laser
 
Join Date: May 2013
Location: Houston, Texas
Posts: 841
Rep Power: 3622
KapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond repute
KapHn8d KapHn8d is offline
Class 2M Laser
KapHn8d's Avatar
 
Join Date: May 2013
Location: Houston, Texas
Posts: 841
Rep Power: 3622
KapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond reputeKapHn8d has a reputation beyond repute
Default Re: 532 Collimated IR output

Cool. I won't embed the image since it's from a different thread, but I recently did a test with another DPSS laser that shipped accidentally with a faulty IR filter (and is being corrected by the manufacturer because they are awesome)... it's a 473 and not a 532, but the IR was certainly collimated to some extent. I took two images that were IR only... one with a Hoya photographic filter that completely blocks (100%) all light less than 720nm and another with a IR converted DSLR and you can clearly see the IR beam is there... check it out.

Cheers!
__________________
96.85840735 percent clayton... the rest is just pi
405nm >> Skylasers PL405 500mW, overspec generic pen 70mW
445nm >> Blord 3W Dominator
460nm >> laserBtB 50mW pen
473nm >> Jet Lasers PL-E Pro 10-30mW
488nm >> Uniphase 2214-40MLA Cyllindrical Argon Ion
515nm >> Skylasers HL515 30mW
520nm >> Skylasers HL520 50mW
532nm >> Skylasers PL532 700mW, CNI 532nm GLP
543.5nm >> JDS Uniphase HeNe
589nm >> DL Spartan 50mW
632.8nm >> JDS Uniphase HeNe
638nm >> Blord 501B 200mW
650nm >> generic pen 4mW
650nm >> Skylasers HL650 300mW
Lazerbee 5W LPM
KapHn8d is offline   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

























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 07:23 AM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC