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An Aspherical Lens has surface profiles. The prime benefit of the lens is to correct the spherical aberration and create an optical effect that makes the incident light rays focusing at different points while developing an image. This focuses light to a small point for ensuring no blur and improving the quality of the image.
It is used to replace complex multi-lens system to get smaller as well as lighter product. It is also employed to reduce aberrations in multi-element wide-angle as well as fast normal lenses. In addition, it can be used in combination with reflective elements and for collimating diode lasers. Its eyeglass lenses allow crisper vision while looking in different directions than the lens optical center. Its ability to reduce the magnification effect helps individuals to have different powers in the 2 eyes (anisometropia).
Features of Aspherical Lens:
1) Perfectly designed lens that minimizes aberration by correcting the conic constant as well as aspheric coefficients.