Lasever offers good laser here

[Lasever]

Hi everybody,

Here are some pics, with telescopic 2:1 (and adjusted beam at 80 meters) in front of the head, and the certification. I make a picture at about 2/3 of the power, at full power the beam is wider. Picture are with the lowest diaphragm aperture available on my camera, and 1/300 exposure, so we can easily see the "hot spot".

And last thing, I would never have posted this bad review if the beam was like it was specified (remember, all I wished was a true beam < 2.4mm). You showed me the sheet before sending the unit, I saw 2.1mm of diameter, so 4.2 with telescopic and I confirmed the shipment.


Miikkkllll

I analyzed the data. I think the problem lies on the adjusting of telescopic 2:1. Michael, can you measure the beam size at 3 meters, 5 meters, 6meters, 10meters? .., the more the better.

[borgqueenx]

We al know chinese copies everything.
They do have their own designs. Try to find a smaller 532nm 700mw module then theirs.
And i have never encountered problems with them.

Dont turn this in a freaking flaming topic against lasever.

[mmuhler]

You wrote:

"He and other says you need better quality control.
This means: test the laser, then ship it. If its not tem00, below power stated or not close or exactly desame specs, dont ship it to the customer."

I concur that's all no more said.

[Lasever]

please allow me not to accept some critical comments not related
We never treat a customer like this, Oh, you are from XX country, or you're not from XXX country.
I would rather consider all customers and all members on a forum as our friends
and then a customers
we do want to sell you lasers in high quality
What's more, we are also trying to offer a best price to all you guys, as cheap as we can

Lasever is a company, we are obviously developing business here,
But suggestions/ comments are welcome
We hear from you and try our best to improve technique and quality control
customer service, too.
So we can work with each other better and better

Finally, Chinese products are only one of your choices
Lasever is also only one of your choices
If you choose Lasever, thanks,
especially thank you for your trust and support like Borg MIKLL Johnny and other guys buying our lasers

If you don't like Lasever, or Chinese cheap products,
never mind, of course you can choose products from Germany or somewhere else
but I hope you can respect us just as we respect all of you.

Even if you won't respect us, that's OK
I believe Lasever will do better in future together with friends who support us.

At this moment, I think just let's concern more about MIIKKKLLLL's laser
We really hope we can do something to help on his laser

[depo]

You send your people to NJIT (I know because I worked there once upon a time), MIT, Georgia Tech Bring book knowledge back to China and try to compete with the country that invented the Laser, Thanks Theodore M. (I really hope Google does a doodle for his birthday this year

So far I am not really impressed with your flashlight beams and high failure rates Japan did that in the early 60s they learned quick about the Q word you guys not so much.

At least Honda sells reliability it may not be a porche but it gets you where you want to go. If you could achieve that much we would be getting somewhere when purchasing Chinese Photon canons. Garbage in Garbage out

And explain to me how your post is constructive? or did you just want to jump on the band wagon?

[borgqueenx]

Well "trying to improve quality control" is a bad sentence. Its not trying its taking the time
Its easy. Before you ship a laser to a customer, you simply check the whole laser module. Have a small checklist with it.
-is it a bit overspec/ does it have a bit more mw then listed?
-is the beam divergence as stated or smaller?(NEVER bigger)
-is the beam side as stated or smaller?(NEVER bigger)
-is it stable for at least half hour?(and during warmup getting only more mw)
-is the warmup time from specs correct?
-the more checks the more happyness

Check this before you ship a module to a customer and i am almost 100% sure that this will eliminate most of your complaints and questions to send back the unit and refund.
It will take more time for you as company but it will be a service EVERYONE likes alot. If you keep that up, not much problems anymore and no bad units anymore and in half a year you will see customers rising

Once youve done that, you need to get your hands on lasers of alot less divergence. <1.5mrad for the 635-650nm and 445nm modules^^. Beam size also must not be greater then 4mm.
If you manage that for same costs as now, you will become the biggest laser supplier of all china

[MIIKKKLLLL]

I analyzed the data. I think the problem lies on the adjusting of telescopic 2:1. Michael, can you measure the beam size at 3 meters, 5 meters, 6meters, 10meters? .., the more the better.

Hello David,


I first thought that was the problem, so I unmounted the telescopic you sent me, and I replaced this one by the other one I received with my 900mW 532-H head a few months ago, but these 2 telescopics have the same lens.

The main problem of the new "standard" lens : it is glued, impossible to make a correct tuning of the lens. But who cares in THIS case, the small variation of position of the lens doesn't affect a lot the beam diameter at the output of the head. The unglued lens was better, because now you have to unscrew the 3 tiny tiny screws and remove the IR filter too to place the 2:1 tube lens.



I have 0.9 mrad with the telescopic (4.9 cm at 50 meters) , and don't worry, I perfectly know how to fix and adjust a telescopic!


With the original collimating lens who comes with the head, the beam is +- 3.2x3.5mm (but it is harder to measure that, as the beam is more powerfull and smaller)

[sbk]

Well "trying to improve quality control" is a bad sentence. Its not trying its taking the time
Its easy. Before you ship a laser to a customer, you simply check the whole laser module. Have a small checklist with it.
-is it a bit overspec/ does it have a bit more mw then listed?
-is the beam divergence as stated or smaller?(NEVER bigger)
-is the beam side as stated or smaller?(NEVER bigger)
-is it stable for at least half hour?(and during warmup getting only more mw)
-is the warmup time from specs correct?
-the more checks the more happyness

Check this before you ship a module to a customer and i am almost 100% sure that this will eliminate most of your complaints and questions to send back the unit and refund.
It will take more time for you as company but it will be a service EVERYONE likes alot. If you keep that up, not much problems anymore and no bad units anymore and in half a year you will see customers rising

Once youve done that, you need to get your hands on lasers of alot less divergence. <1.5mrad for the 635-650nm and 445nm modules^^. Beam size also must not be greater then 4mm.
If you manage that for same costs as now, you will become the biggest laser supplier of all china

Hehe, that seems sooooo simple to grow a perfect laser company, why don't you start yours?

Chinese lasers are very cheap (seriously man, we are speaking of 650$ for 1.2W!!!!), so they must sell huge quantities of units to live, and they still have very small wages. So what do you expect more from them?? They just don't have time to do these extensive checks.
And if you really want them to do these checks, you will have to pay more, 'coz they will sell less lasers in the same time frame. Are you ok to pay more? I don't think so. So be happy with what you get, or go the Jenlas or Coherent way, there you will have all the quality control of the world!

[mmuhler]

And explain to me how your post is constructive? or did you just want to jump on the band wagon?


Hi I was not constructive, it was a bit more of a tongue lashing, I have had some bad experiences as well and that would be the motive. But I have pulled the bandwagon off the road since it does not belong here.

I agree with the manufacturer that the main thing here is to fix the issues with MIIKKKLLLL's laser I think Borgqueenx is explaining things in much better way the key here is quality control and that is something I have found lacking if that gets fixed then as I had tried to convey in last sentence we would be getting a much better product more like a Honda not the precision of a Porche but more a functional product that gets you where you need to go for a reasonable price.
The beam diameters seem to be an issue with any of the solid state lasers in this price range Hence the telescope.

[MIIKKKLLLL]

So David,


How do you plan to fix the problem for me??

I have maybe a solution (not the best), but do you have 1:1.5 telescopic lens + tube?

like that, the beam will be <5mm of diameter. The lacking power won't be there but I will have less losses...