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 > 445nm Lasers



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



Reply
 
LinkBack Thread Tools Display Modes
Old 07-19-2015, 02:58 AM #289
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
planters planters is offline
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
I think the main thing that the pointer only people need to remember at all times is the safety of others
Agreed. Also, I've enjoyed simple audio amp driven mirrors, speaker mounted optics and lumia effects as much as the high end scanner driven graphics systems.

Its nice to have a laser working in the background while building something or while I'm on the computer and that is where the pointer is unable to deliver. But, pointers are OK, projectors are OK and so are laser tools. No problem.


The design of a heat sink also needs to take into account the fin density. It is much more difficult to machine sub mm fins, but the increase in surface area and hence the contact with the air is proportional to the fin count times the surface area.



Last edited by planters; 07-19-2015 at 02:59 AM.
planters is offline   Reply With Quote







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







Old 07-19-2015, 03:35 AM #290
crazyspaz's Avatar
Class 3B Laser
 
Join Date: Jul 2012
Location: IN, United States
Posts: 2,864
Rep Power: 1313
crazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond repute
crazyspaz crazyspaz is offline
Class 3B Laser
crazyspaz's Avatar
 
Join Date: Jul 2012
Location: IN, United States
Posts: 2,864
Rep Power: 1313
crazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond reputecrazyspaz has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by planters View Post
I have just completed a 180min. continuous run with the diode DTR sent to me. The diode was driven @ 4.5 A and the output power remained stable @ 6.34 watts.

The beam size and divergence were also better than the first diode I tested.

Now my question for the members here who focus on laser pointers. I have no issue with these. I am not one of those " you only want to point it at airpl###s" or cut electrical tape. But, what about the thrill in building an incredibly powerful, desktop sized module that without 3 phase power or a water source will produce 40W of blue light? You can generate patterns with a simple scanner or effects with lumia. With this kind of power you could scan an image and burn it into a 4x8 sheet of plywood. Only a small number of the laser-show professionals around the world deploy 40 W projectors. That would hold my interest for some time.
Trust me I wish I could, but that's where my chronic lack of money comes into play...
crazyspaz is offline   Reply With Quote
Old 07-19-2015, 04:28 AM #291
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,108
Rep Power: 50430
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,108
Rep Power: 50430
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

I agree, I didn't mean to infer radiation could be anywhere near as significant as convection. Many heat sink manufacturers make their heat sinks black because they believe the extra heat radiation from doing so is worth it.
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
.........................
PhotoB****t high jacking you too? Use this link instead:
http://imgbb.com

High resolution of my avatar: https://ibb.co/fWOhXF
Alaskan is offline   Reply With Quote
Old 07-19-2015, 12:05 PM #292
Junior Member
 
Join Date: Jul 2015
Posts: 3
Rep Power: 0
Nhfoley is on a distinguished road
Nhfoley Nhfoley is offline
Junior Member
 
Join Date: Jul 2015
Posts: 3
Rep Power: 0
Nhfoley is on a distinguished road
Default Re: NUBM44 6W+ 450nm Laser Diode

I'm working out the details of building one of these diodes into a CNC and trying to understand the beam characteristics, specifically whether I need to use corrective optics beyond the g2 or 3-element lens to achieve a focused spot size in the ≤0.1mm range.

My understanding of these diodes is that without any lens at all, near the exit of the diode, the beam profile is roughly a long ellipse, with a small amount of divergence in the plane of the major axis and a moderate amount of divergence in the plane of the minor axis.

Assuming that is correct, has anyone here measured the aspect ratio of the initial elliptical beam and the ratio of the horizontal and vertical divergences?

If they are significant enough that they need to be corrected to achieve a ≤0.1mm spot, is there a recommendation for cylindrical lenses to start correcting the beam? (Seems like I need a pair, at minimum, and some measurements of the beam to figure out their ideal focal lengths.) ...Or optical design software that would let me start poking around at solutions of my own?



Also, somewhat off topic, but what is the approx. Minimum working focal distance with a g2 lens with a diode like this? Having a hard time finding any specs for them.
Nhfoley is offline   Reply With Quote
Old 07-19-2015, 05:54 PM #293
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

[QUOTE=planters;The design of a heat sink also needs to take into account the fin density. It is much more difficult to machine sub mm fins, but the increase in surface area and hence the contact with the air is proportional to the fin count times the surface area.[/QUOTE]

Yes it's a matter of surface area multiplication. Every fin is a heat vehicle and it's total surface area is much greater than the area of attachment. I often use the sinks scavenged from pc processors and other various electronics because the ratio of fin thickness to total surface area has already been calculated for optimal use of space and/or material.
I have homemade tabletops that will run all day without TEC thanks to lots of finned heat sinks and a small fan.
Pointers though have aesthetics as a top concern and although thicker mounts buy time before the duty cycle is up there are limits as output power and waste energy increases. Eventually active cooling may become necessary for HH but for now we could probably get by with a handle attached to a long finned body.
RedCowboy is online now   Reply With Quote
Old 07-19-2015, 05:59 PM #294
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Nhfoley View Post
I'm working out the details of building one of these diodes into a CNC and trying to understand the beam characteristics, specifically whether I need to use corrective optics beyond the g2 or 3-element lens to achieve a focused spot size in the ≤0.1mm range.

My understanding of these diodes is that without any lens at all, near the exit of the diode, the beam profile is roughly a long ellipse, with a small amount of divergence in the plane of the major axis and a moderate amount of divergence in the plane of the minor axis.

Assuming that is correct, has anyone here measured the aspect ratio of the initial elliptical beam and the ratio of the horizontal and vertical divergences?

If they are significant enough that they need to be corrected to achieve a ≤0.1mm spot, is there a recommendation for cylindrical lenses to start correcting the beam? (Seems like I need a pair, at minimum, and some measurements of the beam to figure out their ideal focal lengths.) ...Or optical design software that would let me start poking around at solutions of my own?



Also, somewhat off topic, but what is the approx. Minimum working focal distance with a g2 lens with a diode like this? Having a hard time finding any specs for them.
The one I had would not focus up close to anything but a small line with the 3 element or G9.
I get the idea of cylindrical lenses for the x and y axis but I have been hearing that not all of these diodes have the same divergence. Are there just the few odd balls or are some NUBM44's different than others?

Last edited by RedCowboy; 07-19-2015 at 06:06 PM.
RedCowboy is online now   Reply With Quote
Old 07-19-2015, 06:14 PM #295
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
planters planters is offline
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

You are correct about the raw beam profile. The emitter size is not yet posted, but the raw divergence should be similar to the better known, lower power 445nm diodes.

It would actually be better to correct the two axis separately because they have different divergence and different, original source dimensions. The problem is that with such rapid divergence the two cylinder pairs would each have to be aspherical cylinders and these are very expensive. Otherwise, the cylinders will introduce spherical aberration.

The advantage with the first non-cylindrical aspherical collimator is it is a pretty good approximation and moves the beam away from the diode where more optics can be added. If spot size is the driver then a cylinder pair that is in the 5-10 x range is probably a pretty good starting point. Expand the resulting beam, which will be an asymmetrical stripe in the near field, with a PCV lens followed by a large, low FL ratio PCX. The bigger this second lens the greater the working distance.

The G-2 could be moved farther to the diode than collimating distance to produce a near field focus, but the FL ratio would be high, generating a large spot. Continuing to move it farther would reduce the FL ratio and decrease the spot size, but then this asphere will be working further and further from its manufactured FL and will introduce increasing spherical aberration.

As an extremely rough first approximation based on my initial set up, at 14M I could bring the diode down to 15mm in the problematic axis(slow). So I suspect that with the same basic aberrations in the system, you might produce a 0.1mm spot in this fatter axis at a 10cm FL.

Last edited by planters; 07-20-2015 at 03:53 AM. Reason: error in instruction
planters is offline   Reply With Quote
Old 07-19-2015, 07:17 PM #296
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 403
Rep Power: 6509
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 403
Rep Power: 6509
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: NUBM44 6W+ 450nm Laser Diode

Hi.
In my laser collection the best cooling ever made was in my Hercules 600:
a combination of a well made finned heatsink and a variable speed fan (aka active cooling system) assure real 100% duty cycle. I tested the Hercules for 20 minutes, and after the classic DPSS instabilities the diode become very very stable near the end of the 20 minutes test.
Another well made finned heatsink was created for my two custom Zaser XL (bigger head and more fins).

For the new NUBM44 diode I ordered the new Cypreus IIIb with three elements glass lenses and JL beam expander: in that way I will obtain a nice beam and a very collimated spot, despite a noticeable loss of power.

I tested the burning power with my Frankenstein build with NDB7875 @ 3W diode Vs my Zaser XL with NDB7A75 @ 5W: both the build mount a LG modified beam expander, but while the Frankenstein mount the three elements glass lenses, the Zaser build mount the G2 lenses.
The results is: the Frankenstein build has less burning power at close distance but it is capable of smoking bark at about twenty meters, while the Zaser build has a tremendous burning power at a close distance but at twenty meters the bark do not smoke.
This show how important is to have the dot line as short as possible at the output, because much power wasted over a a long dot line is an unuseful thing, at least for me.
I prefer to have a laser, not a flashlight
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile

Last edited by Minamoto Kobayashi; 07-19-2015 at 07:21 PM.
Minamoto Kobayashi is online now   Reply With Quote
Old 07-19-2015, 09:52 PM #297
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Could we not retune the 3 element design to better reflect the new emitter dimensions for a best compromise beam?
RedCowboy is online now   Reply With Quote
Old 07-19-2015, 10:22 PM #298
Minamoto Kobayashi's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 403
Rep Power: 6509
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Minamoto Kobayashi Minamoto Kobayashi is online now
Class 2 Laser
Minamoto Kobayashi's Avatar
 
Join Date: Aug 2010
Location: Padova - Italy
Posts: 403
Rep Power: 6509
Minamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond reputeMinamoto Kobayashi has a reputation beyond repute
Send a message via Skype™ to Minamoto Kobayashi
Default Re: NUBM44 6W+ 450nm Laser Diode

It is "handcrafted" possible this?
__________________
- Sinner Cypreus II 18650 405nm 1000 mW
- Jayrob Aurora Stainless Steel 18650 445nm 891 mW Average 950 mW Peak
- Jayrob Frankenstein 445nm 2875 mW Average 3108 mW Peak With Modified Recoated Laserglow 10x Beam Expander
- Jetlaser PL-E Pro Focusable 445 nm 4000 mW Peak 3500 mW Average With Jetlaser 10x Beam Expander
- Mrcrouse Zaser Black Anodized Custom Head/Pill 445 nm 4970 mW Peak 4670 mW Average With Laserglow Modified Recoated 10x Beam Expander
- Sinner Cypreus IIIb 450nm 4757mW With Three Elements Glass Lenses And Adapted Linos 10x Beam Expander
- Sinner Cypreus II XL Gold Plated 24k 465nm 4200 mW Peak With Three Elements Glass Lenses
- CDBEAM Blue Balista 467nm 5088mW Optical Corrected 8 Lenses System
- CDBEAM Verde Volcano 520nm 2600 mW Dual Diode Build With PBS, Corrective Optics, Variable Output Power And 10x Variable Magnification Linos Beam Expander
- Laserglow Hercules 600 532nm 650 mW With Adapted 8x Linos beam expander
- Jayrob Aurora Stainless Steel 18650 532nm 195mW Peak 181 mW Average
- Jayrob Aurora Stainless Steel 18650 635nm 284 mW Peak 271 mW Average
- Sci-Fi Lasers Arcane II 635nm Light Gray Metallic Powder Coated 675 mW Peak 645 mW Average With Three Elements Glass Lenses
- Jayzereer C-Mount Red Mag Build 650nm 1600 mW

- Aurora SH-032 Stainless Steel 160 Lumens
- Nitecore TN36UTvn Modded Ultra-Directive 1 MLux !!
- Fenix TK75vnQ Modded Ultra Flood & Throw 14.000 Lumens
- Fire-Foxes FF4 6000 Lumens

- Laserbee 7 Watt Laser Power Meter Ophir Thermopile
Minamoto Kobayashi is online now   Reply With Quote
Old 07-20-2015, 04:13 AM #299
Bionic-Badger's Avatar
Class 4 Laser
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,478
Rep Power: 3157
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Bionic-Badger Bionic-Badger is offline
Class 4 Laser
Bionic-Badger's Avatar
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,478
Rep Power: 3157
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by RedCowboy View Post
Could we not retune the 3 element design to better reflect the new emitter dimensions for a best compromise beam?
The 3-element lenses are just what we get from those Chinese manufacturers. You'd probably need to buy/source some lenses to tune anything, which would be expensive and require some manufacturing of rings, etc. to space them out nicely. You'd probably be better off using a G-series lens and buying some cylindrical lenses to reduce the beam size in the wider axis.
__________________
You must spread some Reputation around before giving it to <person> again.
Bionic-Badger is offline   Reply With Quote
Old 07-20-2015, 12:07 PM #300
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Bionic-Badger View Post
The 3-element lenses are just what we get from those Chinese manufacturers. You'd probably need to buy/source some lenses to tune anything, which would be expensive and require some manufacturing of rings, etc. to space them out nicely. You'd probably be better off using a G-series lens and buying some cylindrical lenses to reduce the beam size in the wider axis.
Yea I have several boxes of various lenses many mounted so I can play with distance on my crude light bench, some are coated some not and several beam expanders plus tons of mirrors, dicros and even some cubes, prisms and gratings. Now I am not an expert on optics however I am learning and one day I will be able to order by the numbers just what I need, but for now I'm basically trial and error. I could probably get a hot focal point at an given range with just a g2 and a sliding beam expander pair. But the formula for a perfect correction I'm not proficient at calculating yet. I bet as the new diodes become the norm some industrious Chinese manufacturer or a hobbyist here will calculate and produce or have produced an updated lens set that's simple and affordable for the masses.
p.s. Check out this simple beam effect I was goofing around with this morning and see if you can guess what it is.
https://youtu.be/c5_qiMK6BMU
RedCowboy is online now   Reply With Quote
Old 07-20-2015, 08:56 PM #301
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
planters planters is offline
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

What is the problem with the aspheric lenses? I do not see why a three element, spherical lens would be superior. A cylinder pair or as an alternative, a prism pair is almost certainly needed because of the extremely asymmetrical beam profile. It is very unlikely that a radially symmetrical lens will be able to correct both axises simultaneously.
planters is offline   Reply With Quote
Old 07-20-2015, 10:02 PM #302
Atomicrox's Avatar
Class 3R Laser
 
Join Date: Jun 2011
Posts: 2,235
Rep Power: 11361
Atomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond repute
Atomicrox Atomicrox is offline
Class 3R Laser
Atomicrox's Avatar
 
Join Date: Jun 2011
Posts: 2,235
Rep Power: 11361
Atomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond reputeAtomicrox has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

The 3 elements lenses crop the beam, like a sort of spatial filter. That's why I (and a few other members) prefer them to the G lenses. You lose about 20-30% power but to the naked eye your beam still looks better and that's what counts in handhelds unless you're using the laser to burn stuff.

Of course proper correction would be better, but that is costly and makes handhelds too big.

Edit - Sorry to derail the thread, but you might be interested in this. You have a lot of equipment and expertise, would be cool if you could analyse that phenomenon.
__________________
405nm: NewWish (29.1mW avg|5mW rtd) | Dilda (81.5mW avg|200mW rtd) | 501B by Blord (633mW pk)
low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

5W Ophir LPM

HV: Flyback, Plasma Speaker, The Arcsynth and SSTC

Last edited by Atomicrox; 07-20-2015 at 10:04 PM.
Atomicrox is offline   Reply With Quote
Old 07-21-2015, 12:02 AM #303
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
planters planters is offline
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

The problem with cropping the beam anywhere but a focus is that diffraction effects will deteriorate the beam quality.

If I was trying to do the same I would use the standard G2 or G9 and then a small PCX/pin hole/PCX. There is no optical design software involved. It is all coaxial and could be mounted in a long threaded tube with ring spacers. The pin hole might take a few trial and error experiments.

I'll look at that link. It seems interesting.
planters is offline   Reply With Quote
Old 07-22-2015, 04:04 AM #304
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,806
Rep Power: 38344
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Shouldn't there be a way to semi square up the raw output very near the diode face via a tiny cylindrical convex rectangular lens then focus that semi squared output from a reasonable diameter?
RedCowboy 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


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f65/nubm44-6w-450nm-laser-diode-94119.html
Posted By For Type Date
CNC Control - que lente buena para el laser? This thread Refback 08-10-2017 03:00 PM
???????? ?????? ?? ?????????? ? ?????? ? ??? ?? ?????? cnc-club.ru This thread Refback 02-14-2017 09:06 AM
?????-???????? : ???? NUBM44 This thread Refback 01-04-2017 09:06 AM
?????? This thread Refback 12-16-2016 09:46 AM
CNC build and use notes | Cavalcade of Mammals This thread Refback 05-06-2016 11:55 PM
nubm44 nichia - ??????? This thread Refback 02-10-2016 05:52 AM
nubm44- nichia - ??????? This thread Refback 02-09-2016 12:03 AM
Fingers elektrische Welt ? Thema anzeigen - Interessante und kuriose technische Bilder This thread Refback 12-21-2015 06:49 PM
New Diode This thread Refback 06-22-2015 10:22 PM










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 07:37 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