Visible blue laser diode

What's visible blue laser diode ? First of all, do you want it produce a visible blue laser dot, or a visible blue laser beam? If you want a visible blue laser dot, you just need a 5mw blue laser diode?  But if you want the blue laser beam is visible, you need a blue laser diode with power > 50mw, the 50mw blue laser diode will produce visible blue laser beam indoors. However, even the 1000mw blue laser diode can't make a visbile blue laser beam in sunshine. There are visible 405nm blue laser diode, which is part of 405nm blue violet laser pointer:


Or visible 445nm blue laser diode, which is part of 445nm blue laser pointer:


Sanyo produces high quality 405nm visible blue laser diodes, and their products are used all over the world. There are also other famour brands for visible blue laser diode, such as: Nichia, Opnext / Hitachi, Mitsubishi... You can also purchase visible blue laser diode from Armlaser, they resell sanyo visible blue laser diode for reasonable prices. The visible blue laser diode can be used as visible blue laser modules. If you need a pure visible blue laser diode, that means a 473nm blue laser diode, it must be very expensive.