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Thanks. Yeah, the IR doesn't seem like too big a deal. The intensity doesn't seem all that strong. FWIW, I have an IR flashlight, and if I shine that on the same wall and look with my IR camera, it looks brighter than the IR leakage from the laser.

Wondering if this is due to IR leakage? The first shot is in the visible range with the diffraction grating attached. The second one is the same thing, but shot with an IR-converted camera (850 nm). Since this filter should block out anything below 850 nm, I'm thinking there's definitely IR...

These should be fine for a Sanwu pocket 800mW 445nm laser? https://www.survivallaserusa.com/Eagle_Pair__190-540nm___900-1700nm_Laser_Safety_Goggles/p1667092_7862040.aspx (the reason I'm getting the IR band, too, is because I have a cheap, green 301 laser) Also, regarding when to use the...

Another quick thing.... This came with an "effects" lens that sprays the laser out all over the place and can make different patterns as it's twisted (pretty neat, actually). I'm assuming this is OK to look at on the walls, ceiling, etc since the energy is so spread out. I tried to take a...

Thanks! Yeah, I think it's the same as the 301. Didn't realize they were so cheap on eBay! Oh well, Amazon had free same-day shipping. Pretty neat laser for what it is. I did go ahead an order some glasses just to have. Better to not take any chances. Plus, if I get something more...

I just bought one of the cheap, Chinese, green lasers off Amazon. It looks like the Laser 301,but without any markings: https://www.amazon.com/gp/product/B07K6TJ8BC/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 I didn't realize it when buying, but I've read a bit lately about how these are...