A lens element in which at least one face is shaped to a surface of revolution about the lens axis,including conic sections but excluding a sphere.

Changchun Fortune Optronics,Inc could manufacture Aspherical Lens: Aspheric condenser lenses, Parabolic Mirror and Off-axis Parabolic Mirror. Aspheric condenser lenses efficiently correct for spherical aberrations and coma. For this reason, one
aspheric condenser can replace a multiple spherical element design. This replacement reduces the number of back reflections and ultimately yields higher transmission. Aspherical mirror used in reflecting optical systems, such as astronomical telescopes

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