The CLB-3030-100NM from Laser 2000 (UK) Ltd. is a Optical Lens with Wavelength Range 400 to 700 nm, Focal Length -10 cm(-100 mm), Center Thickness 2.8 mm, Radius 5.19 cm(51.9 mm), Edge Thickness(ET) 5 mm. More details for CLB-3030-100NM can be seen below.