Nonimaging Fresnel Lens Design

A Fresnel lens is essentially a chain of prisms. Each prism represents the slope of the lens surface, but without the material of the full body of the conventional singlet. The imaging Fresnel lens refracts light from an object and forms an image in the focal plane. Aberrations have an impact on the quality of the image; the imaging lens should be free from such distortions. Due to the inaccurate manufacturing of the prism tips and grooves the image quality of Fresnel lenses is inferior to the images produced by aspherical full lenses.