Hi all, Chuck Here from AixiZ.

I thought it would be useful if I posted here to help directly with any questions regarding the AixiZ laser products you are using.

My direct email as well is

Hello!

Which laser class is your 5mW IR laser?
How does the 90’ linear lens influence the power? E.g. maybe it reduces the power of 5mw point to e.g. 2mw line?
How about 120’ lenses?

Regards,
Stan

Hi, maybe you can help me to clear out my head

if my laser use 940nm wavelength, can my p3eye webcam BP is 850nm, my reason is webcam sense better in 850 nm range, but I ue 940nm on my laser for more buffer in wavelength detect area.
or I am wrong, better ue 850nm laser and BP 850nm in web cam

Is any formula to calculate in relationhip with mw and the distance? and what other variables can take into acount affect the reult?

what is difference 780nm 25m laser model and 780 25mw? same product?

Thanks

The 5mw IR laser used to be called class IIIA but now they are class IIIR (an new terminology by the IEC and ANSI people). Its a IIIa. This power is measured at the aperture, or point of origin. The laser strength at the use point is reduced by distance and collimation effectiveness.

Thus, at 90 or 120 degree lenses, say at 6” for example, any point along the line with a 5mw source may only at 1mw strength. If you start with a 50mw laser, you may achieve 5mw strength. This is why may products that contain a class IIIB or even Class IV laser can safely be constructed as a Class IIIa product since, from the user perspective at a distance, it is <5mw.

if my laser use 940nm wavelength, can my p3eye webcam BP is 850nm, my reason is webcam sense better in 850 nm range, but I ue 940nm on my laser for more buffer in wavelength detect area.
or I am wrong, better ue 850nm laser and BP 850nm in web cam.

Most cameras are most sensitive to 850nm, it depends on what element is most important. We have a lot of users at 780.

Is any formula to calculate in relationhip with mw and the distance? and what other variables can take into acount affect the reult?

There are a lot of variables therefore it is best to have a calibrated test meter to make that measurement. Give me an example and I will test it in the lab for you.

what is difference 780nm 25m laser model and 780 25mw? same product?

yes.

Great idea Chuck

Now it will be alot easier to get technical data for your products.

P.S. I sent you an email order

1) Will you ship to the UK or sweden ?
2) What 4 lasers + linelenses product you sell would you recomend for a 50” LLP Using the ps3 eye cam to capture.
3) and in your expiriance the best way to power them
Cheers

Hi,

Is there any certification/"black-and-white" written terms that the aixiz 850nm 10mw lasers are safe to use in multitouch applications?

Regards

What about delivery to the Russia?

I have a problem. I have a LLP surface that uses 4 lasers and a single 3.2v power supply.

I had the lasers installed and working fine but about a week after it was all assembled one of the lasers went dead. It was weird because as it was dying, I could press on the laser in it’s mount and it’s light level would fluxuate. After a while this laser dropped down to a very low level, and no amount of effort will bring it back to full brightness. Oh also the module runs very hot. The small black IC chip on the board gets smoking hot when the laser dies like this.

Anywho, I thought it was no big deal, just a defective laser, since I have 3 others running off the same voltage. The voltage reads fine for all of them, 3.15v under normal load. I bought 2 60mw lasers to replace the one that burned and to replace one other to augment the brightness. I plugged in the new 60mw laser, I got about 5 minutes of life out of it, and it died. Same thing, the module gets real hot and it dims down to be hardly visible. I was pretty confused at this point. I re-measured the voltage at that laser, 3.15v. I remeasured the other lasers, 3.15v. At this point there are still 3 lasers burning bright and cool to the touch. I then installed the other 60mw laser I received, it was bad too. This was 2 days ago.

Today I decided to re align my lasers as I made a modification to the frame.

To my surprise, while I was handling one of them, it died. Then another one died without any intervention. I now have one working laser left. It seems to be shining fine. All of these now draw a lot of power, and get very hot. I didn’t drop them or overvolt them or anything like that. They are all running in parallel off the same 3.15v supply. Is 3.15v too low? Will low voltage like that burn out the lasers? Why do I have a remaining laser that is shining bright?

Hey jonferran, I’m experiencing a somewhat related issue to yours: http://nuigroup.com/forums/viewthread/8522/.

Seems like those 60mW lasers are kinda unreliable.

I spoke to Chuck from Aixiz and he says it is probably an issue with the laser case being positive instead of negative ground. This makes sense because my lasers only burned out when I was handling them, possibly body touch or touching them against metal can draw unwanted current through the diodes.

My lasers are burned out and they won’t recover from their dim state.

Chuck was awesome and sent me replacement lasers with insulating sleeves. The sleeves are a little thick for my mounts so I am going to try wrapping them with some tape.

Thanks Chuck!

Hi Chuck
I’m drawing the frame for my LLP table and I’d like to know if you have any CAD drawing of your laser modules ?
I want to use 4 x 780nm 25mW lasers with 90° Line lenses, but I need the dimensions of the modules to be able to calculate the right size for the Acrylic sheets I’ll use.
Can you provide those datas ?
Thanks.

Edit : No need to worry, Chuck, I found what I was searching for on peauproduction’s store.
http://docs.google.com/viewer?url=http://peauproductions.com/docs/aixiz_780_laser_ds.pdf

OK, I am here. Getting to all the questions now.

BADfish10 - 21 December 2009 04:27 PM

1) Will you ship to the UK or sweden ?
2) What 4 lasers + linelenses product you sell would you recomend for a 50” LLP Using the ps3 eye cam to capture.
3) and in your expiriance the best way to power them
Cheers

We are happy to ship anywhere the US Post Office, FedEx, UPS or DHL goes.

I have attached a test report for various power levels and degree lenses. This should answer most questions. Further , unless you have figured out a way to smash your head against the display, there is no way for the laser to directly enter the eye.

I have a fuller version of the report if you want to directly email me.

Thanks!

Originally send to Allan Ng

Allen, please use attached test report. Feel free to post it everywhere.

We used visible laser since a) there would be no difference in the measurements and b) what’s the point of documenting something no-one can see!