I’ve got a generic 100 watt DSP1060 laser (no manufacturer identification at all as far as I can tell) with two big windows on top, and I’m a little nervous about their safety.
I’ve got a German-made marking laser (5 watt CW, q-switched) and it has a Class 1 enclosure with warnings on all sides and a small viewing window that has its safety ratings displayed on a tiny sticker.
My 1060, on the other hand, came with only this marking on the window material:
Google Translate tells me that this says it’s acrylic, and the color is ‘tea color’. No special safety ratings.
Is ‘tea color’ acrylic a suitable material for a 100-watt laser viewing window? Engraving stuff like anodized aluminum is bound to cause some reflections. I’ve been wearing my laser goggles while watching it, but that’s not an acceptable solution for routine use.