D12 F-30 Diameter 12mm focal length 30mm concave lens Sent E-mail INQUIRY DETAILS D12 F-30 Diameter 12mm focal length 30mm concave lens ←[Previous:D12 F30 Diameter 12mm focal length 30mm plano convex lens] [Next:D12 F24 Diameter 12mm focal length 24mm optical glass lens]→ RELATED D25.4 F63.5 Diameter 25.4mm focal length 63.5mm plano convex lens D15 F-40 Diameter 15mm focal length -40mm BCC Biconcave double concave lens D12 F48 Diameter 12mm focal length 48mm plano convex lens D12 F12 Diameter 12mm focal length 12mm optical glass lens with coated