My new >3W RGB projector

[Steve Milani]

Hi all guys!

Finally I got the last module missing, so my last creature has born...




Chars of new projector are:

• Red: 900mW/642nm from Kvant (Martin *Pelosh*)
• Blue: 1W/445nm (1.1W peak) from Kvant (Martin *Pelosh*.... once more!)
• Green: 1.3W/532nm (1.31W peak) from Laserwave (Marc *Gottaluvlasers*)
• Optics and mounts: Laserwave (Rob *Stanwax*)
• Galvos: DT-40 (Marc *Gottaluvlasers*)

I still have to measure the peak output power of Kvant red unit (wishing that my little power meter can be able to do....'cause its end range is 1050mW only), but I am absolutely sure its power is 900mW guaranted (I think at least around 930-950mW)
Total output power should be around 2.5-2.6W (I calculate, in the worst case, 20% losses). White balance is good, maybe little greenish... anyway the white appears to be "snow-white" and It is very very bright.
Case is alu 3mm (40x30x25cm) and alu baseplate is 6mm thickness. Weight should be around 12-13kg.

Here I post some pics of new baby.
I tried to take pictures when at work, but quality was a huge crap... (my camera is a real shit....). Sorry guys... I hope to find soon the right camera for to shoot good pictures...
Anyway...
Here I want to say my biggest "Thank You!" to *Pelosh*, *Gottaluvlasers* and *Stanwax* for their precious advices and services. They supported me wonderful way. Great guys they are!
Thanks guys!

Enjoy you and greetings from Italy (It's raining cats and dogs here!)
Steve

[dnar]

Looks tidy.

Your optics plate looks like 5mm, are you sure that is thick enough to avoid movement and flex? How does the colour balance look? Needs more red from where I am sitting.

Good job.

[buffo]

That's a nice looking projector, Steve. Quite compact! How about some shots of it scanning?

Adam

[White-Light]

Hi Steve,

Very nice job there.

Regarding the colour balance, you're in the green side of the spectrum slightly because you don't have enough red in my opinion.

This is from Chroma so awaits the flaming but....

You can't dial the green back without shifting into the blue spectrum.

Dialing the blue back just shifts you towards the yellow end of the spectrum.

The only way to pull away from the green side, is to increase the amount of red (or decrease both green and blue together in the right amounts to keep them in balance respective to each other). However, in my paper experiments, the amount of drop required on blue and green was so large as to substancially reduce the overall power.

So I'm guessing the best way is either to live with the slightly green end of the spectrum or plan for more red!

I too add to Adams call for scanning pics, please!

[Steve Milani]

I apologize... baseplate is 5mm thickness. sorry... I will test its firmness as soon as possible.

I agree with all of you about white balance.
It shuld be too green unbalanced.
But I sincerely have to tell that, even if Chroma also says on the contrary, white appears very good, almost white-snow.

Tonite I will try to take some pics by my old camera (It has a lot of pixels burned as I used it for lasers.....) I hope to obtain enough good to see pictures to be posted here.

Greets

[RGbee]

Good god Steve,
How many projectors is that you have now

[norty303]

I think you could probabnly lose the heatsink on the top of the kvant (I think it is) unless the any of the diode holders are actually mounted directly to the lid. The amount of thermal transmission up the sides of the lid is going to be minimal compared to that which is dispersed through the base (imo)

[Steve Milani]

@ RGbee....
Ha Ha...
This is my projector number 5.... (n°3 RGB; n°1 RGY; n°1 green).... and I still have a HeNe 632.8nm gas laser tube (82mW) fully working.

Gosh! I could play a complete lasershow Pink Floyd style!!!
(or I could sell one/two of them...)


@Norty303...
I put heatsink on the top of Kvant 1W blue just only for... safety matter.
I tested module it without it for half an hour in CW way: module temperatute (on the top of enclosure) was about 40°C (approximate hand measure...). I asked to Martin for advices and he answered me: "with heatsink would be better".... That's what heatsink is for.

Greets!

[White-Light]

Hi all guys!

Finally I got the last module missing, so my last creature has born...

White balance is good, maybe little greenish... anyway the white appears to be "snow-white" and It is very very bright.

I was commenting on your observation above.

Chroma still shows it as white just on the green side as you observed.

This is the actual plot. It looks pretty balanced with the balance still in white albeit on the green side, pretty accurate I'd say:


You can see the white area as a triangle in the window.

[dnar]

We need a "this thread is useless without beam shots" smilie!