Lasever offers good laser here

[ClearBlu]

Nail,head and hit by Marc

[Steve Milani]

I agree with Marc.

This is because a Ferrari car cost half million dollars.....
Quality has its cost.

[Bradfo69]

Well written. It should probably be framed.

[MIIKKKLLLL]

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".

About the data report sheet Michael mentioned, I am quite sure that we measure and put true figures. All of our clients who have the data sheet can see and check the truth.

Michael, I would send you a replacement if the beam is splitted into 2 beams. You may send me a picture of the beam spot on wall.

In a conclusion, Lasever and me are always with customers. We accept your criticals and improve to meet customers' requirements.

Happy weekend, friends!

See by yourself ! About the beam splitted into 2 beams, I don't understand why you say that. Can you explain what you would said please? Are you talking about temp00 (I didn't noticed problem) or about the 2 big losses, these "2 beams"?

I agree with Marc.

This is because a Ferrari car cost half million dollars.....
Quality has its cost.

But You can not pay Honda Civic prices and expect to get a Lexus performance.
-Marc

Well, I agree with all you have written, but NOT with one big important detail : Ok, in you example Lexus and Ferrari are more expansive ones, and more efficient. But Honda never claimed their Civic goes 0-100km/h under 4.5 secondes. They simply say the truth.

The same way, coherent claim 0.5mrad, 2.25mm beam diameter in their coherent Verdi, and they reach what they claim (or does better), spec are better but the price is also higher.

There are some cars magazines, and they don't hesitate to say what are the defects. Here, I'm pretty sure that there are no magazines about laser who does reviews, so I just want to inform people that Lasever doesn't reach their datasheets.

Whoever state a power, data specifications has to sell what it is specified!!

And this is a bad practice and attitude from the seller.

About sending price, yes that was 2 units, not one.

For a combined unit of 2x 532nm 600mw modules and one driver, connected by a pbs, you pay 900 dollar and 40 shipping worldwide by dhl..
I cannot recommend any other of their modules, they have a flashlight beam.

It is true that 2W in the LSR532H head is hotter than 1W and 1.5W. air flow or heatsink is suggested. The driver is better to be sided up. There are holes for mounting.

In fact, the power effection is very high in this 2W laser. Considering so small a size, the temperature on the laser housing is low.


The reason of the price is that 2W is difficult to make. 1 carat diamond costs more than two times of 0.5 carat diamond. Do you think they rip you?

I agree with what you say but... I have a 1.95W head, and 600mW doesn't pass through the scanners. So I have a 1.35W head CW. And the telescopic cost me 25USD, not 10.

For example, your 1W head are *generally* (if we consider what say the others members) specified between 1.0 and 1.5W. This is "normal" power, like this you have 1W in modulation, because as everybody know, you loose some power when you modulate.

What is the max amps admissible from the PS-NI driver? on your website it is wrote 5A, but a 7W diode need generally 7-7.5A at nominal power.



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

[Lasever]

See by yourself ! About the beam splitted into 2 beams, I don't understand why you say that. Can you explain what you would said please? Are you talking about temp00 (I didn't noticed problem) or about the 2 big losses, these "2 beams"?

From the picture, we can see that the beam quality is not very good. I admit the shape of this laser is worse than some others from our company. The beam quality of this laser hits the bottom line, maybe. But it is still a complete spot, not TEM01. By "2 beams", means TEM01.

I told "Miikkkllll" that the beam is not TEM00. The term on our website and on our specifications page, it is Near TEM00. On the datasheet report, the Chinese is Near.

Why it took months for us Lasever to return lasers? "Miikkkllll" insisted on that Lasever replace the lasers with TEM00 mode. That is, HE bought Honda Civic prices and returned it to get a replacement of Lexus. This is his Manners!

"Originally Posted by borgqueenx

I have no bad experience with lasever at all. I just wouldnt buy another module then their 532nm's because their beam size and mrad is not really great.
David from lasever always helped me with all questions. Also had to return one another day. NO problem."

"Miikkkllll" faked borgqueenx's words! What a bad manners! Can anyone believe him?

I did refund you 20$. I didn't overcharge you any cents that I didn't quote you.
On the other issues on the beam diameter and the diode current value etc., you have to learn more on optics etc. We are not university. You didn't pay us for education. I wanted to share you some knowledge. Your bad manners make things worse.

I believe you will find we Lasever is a good manufacturer and seller for lasers. "Miikkkllll" you may try failures to find out the truth.

[MIIKKKLLLL]

I don't see where I "faked" words of borgqueenx, I simply copy/past : http://www.photonlexicon.com/forums/...s-laser-module

About the replacement of the head, that was a 500mw 532-NL, and in your website you sell them as a true temp00 : http://lasever.com/producttitle.asp?id=1398
And what about the 2.2mrad of divergence of this first head you sent me?


But I still don't understand why you are talking about temp00 of THIS 2W head, I never spoken about that and I know you sell them as "80% temp00". But if you insist, I can share too with the forum the pictures I took last year of the 532-NL 500mw head, with clearly visible 2 beams out of the head...

On the other issues on the beam diameter and the diode current value etc., you have to learn more on optics etc. We are not university. You didn't pay us for education. I wanted to share you some knowledge.

What have I to learn more in term of optics and current? Because Chinese mathematics are different than our? 2.1mm X2 = 7mm?

Sorry but you are the only one in the world who found this value.

By the way, I never asked you to explain me something, but only give the max current available for the driver you sell.


Miikkkllll

[borgqueenx]

Lasever, please go for a bit more advanced englush education for you and david.
Your english isnt bad, but people might misunderstand you now and that makes bad impressions for your company.
Just a friendly advice for you

I know lasever refunded my purchase without problem when it was wrong, even when the laser didnt arrive at them yet. Their quick mails back and info make me positive towards lasever.
Their 532nm mdules are in my experience nice and small.
But im not going to purchase something else from them unless they increase their mrad and beam diameter alot.

[madjonny]

I must say in Davids defence that he sent a replacement 2w 532nm module before I even sent the first one back !!! (two beams big divergence) and it arrived from china three days after I brought this to his attention !!!! he communicated as soon as he could allowing for the time difference between the UK and China

[MIIKKKLLLL]

I must say in Davids defence that he sent a replacement 2w 532nm module before I even sent the first one back !!! (two beams big divergence) and it arrived from china three days after I brought this to his attention !!!! he communicated as soon as he could allowing for the time difference between the UK and China

So this is not only me who has problems with this head.

If I have a proposal like you had had from him, I'm ready to delete all the posts I've written.

To conclude, what a waste of time and money, all could be simpler if a good head had been sent each firsts times.

[madjonny]

you are so right M if the quality control was good then it would solve a lot of the problems !!! it cost me £54 to send back to china fast delivery !!!!