Beam comparison help for different mw's

[cinciredsfan10]

Hello everyone,
I am looknig to buy a new 532 laser and want to know what the beam will be like for different mw. I currently have a superbeast ebay pointer from ItemQuickShip and would guess it to be ~80mw as it is very bright even in well lit room. I want to buy another green laser and i was wondering how much brighter a 200mw would be and also a 400mw. How much of a difference will there be between a 400 and 200mw green when comparing the beams? is it worth the extra $140 or so? I'm planning on buying from Lazerer. Thanks

 

[Burnsy]

Roughly guessed you can extract a root from the multiplier of 2 laserpowers to get the gain in brightness

So a 4times stronger laser appears to be about twice as bright for me

 

[lovellaser]

yea man thats also what i wanna know.
but it will probably be 50% brighter as the other guy said
but IMO its not worth the price

 

[blue bumblebee]

use this: Relative Laser Beam Brightness Calculator: (532nm 80mw) vs. (532nm 400mw)
400mw will seem 5 times brighter than 80mw

 

[lovellaser]

^^^that calculator is not correct
try searching a bit on internet and you will see that to achive 2 times brighter laser you will need 4 times power
e.g. 400mw laser would be twice as much brightness as the 100mw laser.

 

[blue bumblebee]

hmm
interesting
i knew that but i never noticed it on the calculator!

 

[cinciredsfan10]

Yeah that calculator doesn't work that well it simply multiples to find a value. it is just saying 80mw x 5 = 400mw and therefore 5x brighter which is very inaccurate. Oh well. Does anyone think i should go for the 400mw over 200 for an extra $140?

 

[Burnsy]

Does anyone think i should go for the 400mw over 200 for an extra $140?

I'd recommend you the 200mw. Often the cheaper higher powered greens also have a bigger beam... A thinner seems brighter though

 

[blue bumblebee]

well, if you are the power hungry type, then go for the 400
because if you arent satisfied with "just" 200mw, soon you will sell (or keep) the 200 and get the 400 anyways

that is IF you are that type

 

[lovellaser]

I'd recommend you the 200mw. Often the cheaper higher powered greens also have a bigger beamo... A thinner seems brighter though

totaly agreed.