Docs The 3 element lens offers a tight beam with a clean profile at the cost of some output power, running at an efficiency of 70%. This lens also has a long focal length, and low divergence; making it a great precision lens. This product contains the lens only. The focus finders can be purchased here, or you can make your own using the files found here. Learn more about lenses used for laser systems on our resources. Compatible with the LaserBeam system.
