How many watt of green laser do I need?

[lipo99]

What minimum output is required to see the beam of a green laser indoor in day time?

I can see a faint green laser using my friend laser. He told me he bought at US$30 in China and it is 18650 and comes with key

 

[sjesper]

What minimum output is required to see the beam of a green laser indoor in day time?

I can see a faint green laser using my friend laser. He told me he bought at US$30 in China and it is 18650 and comes with key

It really depends. We can't know how much light there is or what divergence the beam is.

But for the price i would guess it is is about 50-100mW where ~ 20mW of it being IR.

 

[matthewl]

if u use it as a torch, then either power is ok. BTW, it costs not too much, a 500mW green laser torch is about 80USD here.if u need , i could help u.but u should be careful, it could easily destroy someone's eyes.

 

[ZRaffleticket]

...a 500mW green laser torch is about 80USD...

A 500mW laser... about... $80..? I can believe IR but...

 

[RedDart]

if u use it as a torch, then either power is ok. BTW, it costs not too much, a 500mW green laser torch is about 80USD here.if u need , i could help u.but u should be careful, it could easily destroy someone's eyes. good luck. skype,matthewliu5

Where do you live? Also, there's no way those 500mW greens are actually 500mW, probably more like 50-150mW.

 

[Moistenator]

The only way to know conclusively is to meter this on an accurate LPM. Try and find someone that lives close to you to meter it for you.

 

[ZRaffleticket]

By all means, if you can produce 500mW's of IR filtered 532nm for under $100, on or above spec, you would have the best prices on the market. If you can do it, by all means do. I just won't believe it until I see it

 

[matthewl]

By all means, if you can produce 500mW's of IR filtered 532nm for under $100, on or above spec, you would have the best prices on the market. If you can do it, by all means do. I just won't believe it until I see it

Yea, quite sure.There always IR inside 532.It is not i myself who make it, and also ,as i have mentioned, i have not tested any of it yet. I have also have question marks on it. Maybe the price is fiction,maybe the power.lol