18 x 20mm FL, Grade 1, Double-Convex Lens

Product Details Ideal for Experimenting and Prototyping Applications Quantities Extremely Limited, Buy While Supplies Last For Even More Deals, Check out Mega Clearance: Optics Double-convex (DCX) lenses have two outward curved surfaces, a positive focal length and are useful for 1:1 imaging and in multi-element systems. 15 – 19.9mm Experimental Quality Double-Convex (DCX) Lenses are offered in several experimental grade options. Grade 1 is standard optical glass, edged, free of visible scratches, chips, stains, or oxidation. Grade 2 is unedged, non-optical glass, small chips, slight stains, or other defects. They may have slight edge cement separation. Note: Specifications for experimental grade optics may vary as much as 10% from those listed. Also, no additional information is available other than what is provided. Specifications General Type: Double-Convex Lens Physical & Mechanical Properties Diameter (mm): 18.0000000000 Optical Properties Effective Focal Length EFL (mm): 20.0000000000 f/#: 1.11 Numerical Aperture NA: 0.4500000000 Regulatory Compliance Certificate of Conformance: View ×