lens curvature造句

• The need to mask lens imperfections gradually increases with lens curvature and power, overall lens and eye size, and the resolution and aperture needs of the organism, driven by hunting or survival requirements.
• Available design parameters are a single index of refraction ( n ) per lens element, variations in the element surface profile, including continuous surfaces ( lens curvature ) and / or discontinuous surfaces ( diffractive optics ).
• High minus aspheres for myopes do not necessarily need progressive add portions, because the design of the lens curvature already progresses toward a less-minus / more-plus dioptric power from the center of the lens to the edge.