Warning about Green Laser Pointers

The NIST has just released a report and warning about a serious safety issue with some green laser pointers.

Late last year, the research team purchased three low-cost green laser pointers advertised to have a power output of 10 milliwatts (mW). Measurements showed that one unit emitted dim green light but delivered infrared levels of nearly 20 mW, powerful enough to cause retinal damage to an individual before he or she is aware of the invisible light.

NIST’s researchers have devised a simple test that you can do yourself to make sure your green laser pointer is safe (see the full report).