Always consult your on-site Laser Safety Officer (LSO) for specific guidance. Required optical density (OD) and laser safety personal protective equipment (PPE) are determined based on worst-case scenarios and require professional judgment. All laser safety equipment provided is intended for diffused beam viewing only.
Here is Keyence's documentation from their website: https://www.keyence.com/products/mark...
The 683nm wavelength laser with a 5.0mW output refers to the distance laser beam, not the operating beam, listed as a Class 3R laser. Keyence also lists a guide laser at 655nm with an output of 1mW listed as a Class 2 laser. The guide laser is also known as an aiming beam. Please see our article on the difference between an aiming beam and an operating beam: https://lasersafetyindustries.com/blo...
You need a laser safety window and eyewear to protect you from the laser operating beam.
The Keyence Laser marker MD-X2000A has an operating wavelength 1064nm with an output 13W. We recommend our 435 line of laser safety windows, please see here: https://lasersafetyindustries.com/col... Our 420 line and 480 laser safety windows are also sufficient.
Of course, please feel free to call for any specific questions or if you are unsure. Our phone number is 952-405-6947.