Comment by krackers
22 days ago
Hm the ones I can find have a heavy green reflex and their optical density seems about twice or thrice what you'd need for a 1W CW laser. Maybe it's unavoidable given the closeness of near IR and deep red, but I wonder if there exists glasses with a cutoff sharp enough and reduced OD so as to not result in noticeable color shift.
We always used Thorlabs' [0]. If you want to block Waymo (900 - 940 nm), but not Ouster (840 nm), the LG11s may work and are quite transmissive and neutral, but I've never used them. The LG20s are the standard NIR blockers that I'm familiar with.
[0] https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=76...
I was thinking more "one could create a business" vibe. The requirements for making everyday protections from errant lasers is different from what you'd need for lab safety working with lasers.