At what output can you see the beam for a 405nm?

[Babalimje]

At what output can you see the beam for 405nm laser pointer?

 

[kiyoukan]

Its very hard to see the beam without smoke, even at higher powers.
in a very dark room you might be able to see a phr running at around 90mw might just see a beam.
A ggw running at 180 will get you a little nicer beam but still very hard and almost invisible in the daytime.
12x laser in the dark is a decent beam nothing like a green but best you can do for 405nm.
But a new laser came out and is cheap the 445nm it is alto brighter and the laser is only around 50$ shipped to your door.
Power not yet confirmed from 300mw-1W.
Very bright just read around you will see all the craze.
405nm lasers have just been trumped.

 

[Babalimje]

Thanks, Where can i get a 445nm pointer?

 

[DJNY]

Thanks, Where can i get a 445nm pointer?

http://laserpointerforums.com/f39/interest-exotic-lasers-come-here-51370.html

 

[photonaholic]

I have a simple little cheapo blue ray (violet) pointer and on a foggy night, the beam looks OK as long as you look straight down it.

 

[DJNY]

I´m able to see the slight beam of my 20mW br pen in a dim room

 

[photonaholic]

The real fun is pointing them at glow in the dark stuff.

 

[Benm]

Beam visibility depends on a number of factors. Ambient light is an obvious one, as is any dust/fog/etc that scatters the beam, and also the angle you're looking from (directly away or onto the laser is brightest, at a 90 degree angle is most difficult).

In a dark smokey room you might see even 1 mW as a beam, on a clear sunny day outdoors you might not be able to see several watts even if it crosses right in front of your face.

 

[scopeguy20]

My older eyes could just see the real color of the beam in the dark when it hit 80mW and I could see the beam, if dim when it was at least 28mW, but the beams color at 28mW was grey. As far as seeing an impressive beam, in good darkness I think a 500mW 405nm is about equal to 10mW of green to my eyes. -Glenn

 

[JellyCrab]

Well, I had a PHR that was allegedly set at 95mA that had a completely visible beam in dark areas. Not SUPER bright, but you didn't have to look hard to find it. I find that with blu-ray and red I need to let my eyes adjust to it for a few seconds before I completely notice it, then it's hard to miss. Kinda like adjusting to the dark.