D12 F20.7 Diameter 12mm focal length 20.7mm optical glass lens Sent E-mail INQUIRY DETAILS D12 F20.7 Diameter 12mm focal length 20.7mm optical glass lens ←[Previous:D12 F24 Diameter 12mm focal length 24mm optical glass lens] [Next:D12 F20 Diameter 12mm focal length 20mm optical glass lens]→ RELATED D12.7 F48 Diameter 12.7mm focal length 48mm optical glass lens D25.4 F50 Diameter 25.4mm focal length 50mm plano convex lens D18 F30 Diameter 18mm focal length 30mm plano convex lens D15 F-20 Diameter 15mm focal length -20mm BCC Biconcave double concave lens