Best choice

[colbee]

Hello,

I am after something to do good mid air effects in warehouse size events. Something that is RGB. I've read a bit about the best wavelengths of certain colours but I'm still fairly new to all this.


I have been presented several configurations of laser from my supplier, and i would be interested in your thought on what would be most suitable. All the scanners are 40K, so its mainly the diodes that i need a little guidance on.

System A - R 1200mW/640 G 1500mW/532 B 2 x 1w / 447
System B - R 2x 1000mW/650 G 1000mW/532 B 2 X 1000mW/445

[gottaluvlasers]

System (A)!

640nm- MUCH brighter to our eyes than 650. 2W of 650 would probably be barely visible in a warehouse without some SERIOUS hazing/fogging. 1.2W of 640 will be very visible even with less than ideal haze situations.

532nm- either system has good amount of 532 green. so no issue there.

445nm (both systems are using 445. don't let the "447nm" fool you). its 445nm. I would try to bump that up to 2W, but 1W would be ok.

You are more worried about "beams in the air" so don't worry about the "white balance" balances. get as much power in each wavelength that you can afford.

-Marc

[Dr Laser]

All systems listed are not white balanced.
Here is what needed based on green power output. Green is needed 1x. Red need 2x for 635 and 2.5x for 642. Blue needed 1.5 x for 473 and around 3-4x for 445.
R-3500W@640nm
G-1500W@532nm
B-4500W@445nm

R-4500W@650nm
G-1000W@532nm
B-3000W@445nm

[badger1666]

All systems listed are not white balanced.
Here is what needed based on green power output. Green is needed 1x. Red need 2x for 635 and 2.5x for 642. Blue needed 2.5 x for 473 and around 3-4x for 445.
R-3500W@640nm
G-1500W@532nm
B-4500W@445nm

R-4500W@650nm
G-1000W@532nm
B-3000W@445nm

care to explane how you come to those power requirments for a 1.5w green
rather a lot of 640nm for 1.5w 532nm
just want to learn

[Dr Laser]

It's very simple. Green is a base for all calulations. Classic formula for 473/532/635 is 1.5x blue 1x green and 2x red. Far you go more you need. For 1W you will need 1.5W blue and 2W red. Closer you get to infrared more power you need to keep the beam visible. For 642 you need around 2.5x of green for 650 3.5 for 660 around 5x or 6x of green. For 671...8x. Same thing happends when you go close to UV. Yes you can tune down you green to get good white but thats a waist of laser power.

[Dr Laser]

System A is a better choise. It's far from perefect but... you will need the double a red power and you will be good!

[colbee]

Thanks, that really clears it up for me. I'm a bit baffled as to Why B is coming in at almost double the price then. Unless its more suited to another application like projection as opposed to raw power.

[LaNeK779]

Thanks, that really clears it up for me. I'm a bit baffled as to Why B is coming in at almost double the price then. Unless its more suited to another application like projection as opposed to raw power.

that could be mainly due to:

a: your supplier doesn't have a clue about costing/pricing
b: your supplier's supplier does not have a clue about costing/pricing
c: system A is a cheaper brand system B is a more prestigious brand

[ZeroPoint]

c: system A is a cheaper brand system B is a more prestigious brand

my money's on this one. system B is probably a more expensive setup designed for good animations while system A is a more economy setup focused around beams. if its beams you want, and if Dr. Laser thinks the output is more balanced (i havent the slightest idea about balancing outputs), then i would go with system A. no need spending the extra money if its not going to be used for what it was designed (assuming i am jumping to a valid conclusion of course). good luck