The DCX-BK7-003-003 from Artifex Engineering GmbH & Co. KG is a Optical Lens with Wavelength Range 587.6 nm, Focal Length 2.291 to 3 mm, Center Thickness 1.9 mm, Diameter 3 mm, Radius 2.732 to 2.732 mm. More details for DCX-BK7-003-003 can be seen below.