A convex lens is thicker at the centre than at the edges. 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.
50mm and Larger 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.
- (D: 7.5cm, F: 35cm)
- Material: Glass