Instead, aspheric lenses ha ve a profile that changes in curvature across the surface. This type of lens is designed to reduce spherical and optical aberrations without the need for a multi-lens ...

The aspheric profile used is frequently a conic surface of revolution about the lens axis, matched in design to the shape of the second surface. The shape of this lens produces a dramatic reduction of ...

The geometry of focusing light using spherical surfaces is simply not perfect, and spherical surfaces are used primarily due to their inherent ease of manufacturing. Many lenses can be ground ... 7, ...

(From Tamron lens literature) The optical system of the new SP AF 14mm F/2.8 Aspherical (IF) lens, composed of 14 elements in 12 groups, includes two Hybrid Aspherical lens elements. These large ...

Beneficially also a correctly formed aspheric lens surface may cancel or control spherical aberration. As a result, more laser energy can be concentrated into a smaller area. Benefiting from a ...