some comparisons

[flecom]

since we have been talking a lot about beam size/divergence etc with red and blue lasers, I decided to do some comparisons of the lasers in my projector... which are as follows

650nm 1W CNI "flashlights" (x2 one V one H via PBS)
642nm 1.2W KVant
532nm 1W Laserwave
473nm .4W Laserwave
445nm 1.2W O-Like (no correction optics)

642nm



notice that like every other 642nm laser this is a multi-diode setup

650nm



notice the + pattern, thats the H and V lasers

heres the dot on the wall from the kvant



blown out contrast in photoshop so you can see clearer



642nm line



642nm + a tiny bit of 532nm



642nm + a tiny bit of blue (473+445)



642nm + a tiny bit of blue and green



heres 650nm + a tiny bit of blue and green



and all of them mashed together

[LaNeK779]

wow! nice macro-photography there!!

i really like the pics. thanks mister flecom

[-bart-]

What is the projection distance ?
Everything shorter than 4 meters is pretty nearfield with multidiode setups.

If I would ever buy a kvant multidiode setup, I would like them to overlap the beams @ infinity, not anywhere nearer.

[flecom]

a bit over 14 feet... so in an educated country that would be about 4.25 meters

heres the output across a 65 foot dome... little less than 20 meters

[badger1666]

see what you mean now ,with your kvant, not cool at all
you think they would have put the beams so they overlapped.
they should fix that for you with the big $$ they cost.
my 6x 640 build i made the beams slightly off focus and overlapped them all
to avoid that problem

[svandescheur]

Hey Flecom,

Now i see what you're problem is same problem i have !!
I've noticed that at 1m.. i haven't test it at large distance.
Because the red i have is so bad that the beamspot is over 5cm at 4m.
Hopefully they can fix you're module. Mr Edison will repare my red

Gr Sander

a bit over 14 feet... so in an educated country that would be about 4.25 meters

heres the output across a 65 foot dome... little less than 20 meters

[edison]

Nice pictures. It gives a good view of how thing look on farfield. The Kvant can be fixed i,m sure of that. The blue and green match nicely by the looks of it. The red too if the allignment was correct. I would guess a PBS cube that is out of allignment from the Kvant.