Thorlabs LA1074‑B Plano Convex Lens

Features:

• Diameter: ½″ (12.7 mm)

• Focal length: 20 mm (positive)

• Material: N-BK7 optical glass (Abbe number ~64)

• AR coating range: 650-1050 nm

• Plano-convex geometry suitable for focusing or collimating

• Edge thickness: ~1.8 mm; centre thickness: ~4 mm

• Back focal length ~17.3 mm

• REACH-compliant with no SVHC above 0.1%.

Applications: Optical benches, laser modules, fiber optics coupling, spectroscopy, imaging systems in the red/NIR, prototyping and research labs.