NEWS from KVANT and Synchrovision Laser Art Ltd

[badger1666]

what else would you expect from a multi diode set up , of course your going to get multiple beams next to each other , you would have to be a miricle worker to be able to stack them so close you could not see the seperate beams and not lose a shit load of power.
after a few meters you cant see the seperate beams as they merge, well that how my homemade 6x 640 looks
if you can see them after a few meters then it has alignment issues and should be looked at.

2cents worth

good job kvant if i had the cash i would be in the que to get one

[flecom]

No they create seperate lines in a scanned image.... additionally it would be nice if in with the beam size info they told you it was in a :: pattern... if i knew it was going to look like every other multi diode setup that anyone can build i would not have spent so much money on something that is pretty much useless for graphics...

To be honest my kvant isnt much better than the 4 diode 550mw 642 laserwave i had that never went into production because of the beam issues... the kvant at least does not drift since the tec seems to be set to run flat out (making a very hot mounting plate)

Also has kvant figured out that their drivers should have some way of being secured?? Mine had no mounting hardware at all and no obvious way of attaching it to anything.. additionally that cover they put on the driver is insane... it makes it HUGE like 4x5x6" and you still need the seperate 12v supply!

[mophead]

are they going to suck like the 642nm modules? aka have 4 very distinct individual beams

Are they as bad as the LaserWave modules?

[pelosh]

It is late so I'll try to reply to everybody tomorrow, but for now - guys with 4 beams - can you tell me when did you purchased your modules?
There were some changes in internal structure and as Chris says - all the beams should join together after few meters and stay together "forever".
If you see 4 separate beam on let say 10 meters, it is either older design or something's not right.
Quite a few lasers are going through my hands every month and I haven't seen one like that since - few years ago. Everything red is lovely circular dot on the wall (my showroom is 6 meters long only).

Cheers

[flecom]

Are they as bad as the LaserWave modules?

No, the laserwave modules were not tec cooled so in addition to (an even worse :: pattern) the individual beams would drift in random directions... they were really quite a cluster fsk...

It is late so I'll try to reply to everybody tomorrow, but for now - guys with 4 beams - can you tell me when did you purchased your modules?
There were some changes in internal structure and as Chris says - all the beams should join together after few meters and stay together "forever".
If you see 4 separate beam on let say 10 meters, it is either older design or something's not right.
Quite a few lasers are going through my hands every month and I haven't seen one like that since - few years ago. Everything red is lovely circular dot on the wall (my showroom is 6 meters long only).

Cheers

Thing is a couple months old and came straight from kvant via a us reseller

[Steve Milani]

@ badger1666

I agree. Absolutely. Just only a miracle can give a so close alignment from four single beams to seem as one beam only.
Also I apoligize: my module gives out TWO beams, very very close between them, not four as said before. Sorry.... my guilt.

My last post has been just a confirmation (50% wrong) about red 642 spec only. No criticism.
I am very happy of my Kvant 900mw 642nm. Very very good module.

[pelosh]

to Flecom - please send me serial number of that module and a picture of those 4 beams on the wall (if possible) to info@synchrovision.co.uk
I'll find out what's going on...

Thanks.

Good night!

[flecom]

don't get me wrong about my bitching, I know that the only way I am going to get a better red is a Kr or OPSL, but I really wish KVant would tell you, hey, that 1.2W laser is going to be 4 300mW beams, not 1 1.2W beam... and actually its not impossible to make a single beam high power 642 with enough PBS cubes and wave plates... which I kind of thought they might be doing since the damn module costs so much... but no, they are just knife-edging like everyone else

[Things]

I think wave plates can only rotate 1 polarization, not 2 combined like would come out of a PBS cube? Someone here would have done that already if it was possible I think ...

[flecom]

it appears your right, just read up on 1/2 wave plates... not sure wtf I bought 2 of the 445 ones for now since you can just rotate the diode

so ya, ok then my previous statement, if it isnt Kr or OPSL, its going to be multi-diode and suck for graphics