510-520nm green laser is diode laser. The green light directly comes from the laser diode. Meanwhile 532nm laser module need a 808nm laser diode and a crystal to convert 808nm light to 532nm laser.

Compasiron between 510-520nm grass green laser and 532nm deeper green laser.

Advantages:

  1. 510-520nm green light is purer than 532nm. 532nm has 808nm invisible laser mixed together if there is no ir filter.
  2. 510-520nm laser can work stably in low temperature environment. It doesn’t need time to warm up. The output power is more stable.

Disavantage:

  1. Higher price.
  2. Less visibility for human eyes than 532nm green laser

Application of 510-520nm green laser module

Laser level for construction site, wood saw mills, etc. outdoor environment. It can work at hot or cold temperature.