Author Topic: High end laser modules  (Read 2514 times)

mrehmus

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High end laser modules
« on: March 28, 2017, 08:57:35 PM »
Anyone used or heard of the products from this company?
http://optlasers.com/en/41-cnc-modules
mrehmus
editor, Model Engine Builder magazine
Elekslaser A3 2.5 watt via Banggood
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ROSS

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Re: High end laser modules
« Reply #1 on: March 28, 2017, 11:09:25 PM »
No.....bit pricey-without the finer details.  Buy one and let us know how it goes!  :))
.
Lasers are wonderful machines..not ONLY  can they cut a finger off BUT  they can also cauterise it at the same time.....

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Opt Lasers

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Re: High end laser modules
« Reply #2 on: March 30, 2017, 01:39:41 PM »
Hi guys!

It looks like you are writing about our laser heads Nice! ;). We are in a hurry to explain. ;)

The subpage that mrehums asked about is connected with our line of laser engraving heads. We are a producent of proffesional laser equipment for laboratories, universities and companies, some time ago we decided to create a whole line of laser engraving heads.

You can engrave and cut a lot of different materials using them. Watch on our channel how they work https://www.youtube.com/channel/UCiewUmihkzI0zGfLv6RVP_A

Also lot of tests we did are in our support page. http://optlasers.com -> support -> tests and adjustments -> PLH3D 6W

If only you have questions we will be happy to answer you.

And one more thing. We are a young sturtup and we thought we could take the deal with you. ;) If you buy a laser head and then write a review on the forum we will give you a 20% discount.
What about that? ;)

Opt Laser Team ;)

ThothLoki

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Re: High end laser modules
« Reply #3 on: March 30, 2017, 02:18:47 PM »
They look very nice! A bit pricey. Would love to hear a review on how well these work with our machines. The SLH-2000 looks like a decent little laser.

Maybe a sample could be sent to a machine user and software developer like Ralph and Zax to see how well they work *hint* *hint*
Laser: A3 2500mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
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carolynsdad

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Re: High end laser modules
« Reply #4 on: March 30, 2017, 02:36:23 PM »

It looks like you are writing about our laser heads Nice! ;). We are in a hurry to explain. ;)


Some questions about your kit:
1. Is the laser diode output circular rather then oblong when viewed defocussed onto a surface?
2. How linear is the power output with reference to the PWM percentage and is it repeatable from one diode to another? Can you show us some linearity curves?
3. At what PWM percentage do the diodes start to lase?

Mike




2.5W BangGood laser kit in use by my daughter for craft work.
3.5W BangGood with TTL board in use by me as a developemt tool only.
T2Laser and Benbox software.

Administrator

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Re: High end laser modules
« Reply #5 on: March 30, 2017, 02:36:31 PM »
>Opt Laser Team

Welcome to the forum.

>Maybe a sample could be sent to a machine user and software developer like Ralph and Zax to see how well they work.

I'll let @Zax have a look if they decide to do that.
Admin -- Ralph -- support @ BenCutLaser dot us
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ThothLoki

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Re: High end laser modules
« Reply #6 on: March 30, 2017, 03:08:30 PM »
>I'll let @Zax have a look if they decide to do that.

Just figure you two are the best to test these out on out machine with your software.
Laser: A3 2500mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
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Opt Lasers

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Re: High end laser modules
« Reply #7 on: April 03, 2017, 07:55:05 AM »
Some questions about your kit:
1. Is the laser diode output circular rather then oblong when viewed defocussed onto a surface?
2. How linear is the power output with reference to the PWM percentage and is it repeatable from one diode to another? Can you show us some linearity curves?
3. At what PWM percentage do the diodes start to lase?

Mike

Hello, sorry for late reply. We are quite busy here ;)

1. Beam shape depands on the focus distance. For short focus distance around 20-30mm the beam spot is around 0,1mm and it is round. Power is a little smaller because the lens are not catching whole light. At longer distance the beam is a stripe but properly set it can be used as a nice squre. We are working on our software and it will allow to engrave pictures with big pixels square sized in high speed. We did testing and made a 100x100 mm^2 picture in like 15 minutes only.

2. We do not have any graphs but the idea is that PWM is switching the dioe to full power. The only condition is that the PWM should be higher frequency, for example 5-10kHz. This way the signal is averaged and power output is very linear. I mena if you use 1% fill you should obtain 1% power. This is happening thanhs to our high speed driver which is able to work with 50-100kHz signal easily. We will be doing testings soon after we end our docking station, then some graphs should show up ;)

3. It will lase instantlly. 1% ~ 1% power. If you speak about analog input then situation is a little different. You need around 0,3-0,4V to start lasing action. It is connected with diode threshold current.

carolynsdad

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Re: High end laser modules
« Reply #8 on: April 03, 2017, 01:41:13 PM »
Hello, sorry for late reply. We are quite busy here ;)

1. Beam shape depands on the focus distance. For short focus distance around 20-30mm the beam spot is around 0,1mm and it is round. Power is a little smaller because the lens are not catching whole light. At longer distance the beam is a stripe but properly set it can be used as a nice squre. We are working on our software and it will allow to engrave pictures with big pixels square sized in high speed. We did testing and made a 100x100 mm^2 picture in like 15 minutes only.

2. We do not have any graphs but the idea is that PWM is switching the diode to full power. The only condition is that the PWM should be higher frequency, for example 5-10kHz. This way the signal is averaged and power output is very linear. I mean if you use 1% fill you should obtain 1% power. This is happening thanks to our high speed driver which is able to work with 50-100kHz signal easily. We will be doing testings soon after we end our docking station, then some graphs should show up ;)

3. It will lase instantlly. 1% ~ 1% power. If you speak about analog input then situation is a little different. You need around 0,3-0,4V to start lasing action. It is connected with diode threshold current.

Many thanks for replying.

Interesting point about focus distance; yes you can compensate for it over quite a range by lens adjustment but the best method is to have the object close to capture all of the output from the laser.

The top end frequency of your controller is interesting; the 1.1e Grbl build is I believe set at 7.8kHz, right in the middle of the lower range you mention. I think it would be interesting to experiment with much higher frequencies on laser drivers that are not designed for PWM control.

In designing your controller please make sure that it has a pull down on the input as the PWM output from an Arduino goes high impedance when booting which causes other controller sto turn on as they have pull-up resistors on the imput; I advocate the removal of the pull-up by track cutting to overcome the problem. Use of an external pull-down resistor is also used by some but not my prefered method..

Mike
2.5W BangGood laser kit in use by my daughter for craft work.
3.5W BangGood with TTL board in use by me as a developemt tool only.
T2Laser and Benbox software.

Opt Lasers

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Re: High end laser modules
« Reply #9 on: April 04, 2017, 09:42:29 AM »
The driver is pulled down with resistor to GND. 7kHz wil ldo easily liek the X-carve ;)

Go to our fanpage and  you can see some results and our company:
https://www.facebook.com/OptLasers/?ref=br_rs
https://twitter.com/Opt_Lasers

Opt Lasers

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Re: High end laser modules
« Reply #10 on: April 06, 2017, 01:26:15 AM »
Hi,

Yesterday we ended the final prototype of our docking station.
It will allow to fast connect/disconnect the laser during work, for example when the wood dust is flying everywhere :D
It comes with a cover.)We just made a full photo session so I'm attaching some photos.

We also did testing conected with time response optical output versus electrical input. I will try to post it soon.

Opt Lasers

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Re: High end laser modules
« Reply #11 on: March 17, 2021, 03:23:10 AM »
Lots of news since the last post.  ;D

New 15W head - can do wonders!
New Nozzle - clean, beautiful and easy to work with :P
and many others...

Here you have some links:

https://optlasersgrav.com/PLH3D-15W-Engraving-Laser-Head
https://optlasersgrav.com/high-pressure-air-assist-nozzle-for-laser-cutting-and-engraving
https://youtu.be/T3TtqT62oI8

And feel free to write if you have any questions :
https://optlasersgrav.com/contact-us