OD>4+ from 870-950nm OD>5+ from 950-1000nm OD>7+ from 1000-1550nm OD>4+ from 1550-2750nm OD>6+ from 2800-11,000nm VLT = Excellent
Details
The Philips AKG-5 Holmium/Yag/Co2 is a laser safety lens made of a light blue AKG5 glass filter. It is cut and mounted into model 600 frame. This is an aviator style metal frame with black side shields.