The LDC-4 is a universal collimating lens system that fits 5.6mm diameter base diodes. The laser diode press fits in the back of the lens assembly. The lens can be adjusted with a small spanner wrench or flat blade screwdriver.
Lens type: Single element, AR coated glass
Focal length: .394″ (10mm)
Numerical aperture: .29
Beam diameter: .197″ (5mm)
Base material: Brass
Dimensions: 0.57″ (14.5mm) long x .414″ (10.5mm) diameter.