Why are green lasers so big?

[Flechette]

Compare a red laser so small that it can replace the rear sight of a pistol:



To a green laser mounted on a pistol (smallest I can find):


Does it have something to do with electronics? Batteries?

 

[tarosean]

I believe Green requires more power to operate within its range.

 

[CWL]

Probably a generational production issue. As a newer product, it takes a few build iterations for manufacturers to micronize parts.

They should continue to reduce in size as newer models become available.

 

[pintler]

Green Lasergrips are the same size as red...

 

[Tirod]

It's a generally accurate concept. The issue is generating a green laser takes a lot bigger "engine" to power it because the beam is stripped and filtered down for the one lightwave. it's not efficient at all compared to red - battery life is much less because of it.