Single lens having one spherical and one aspherical...

Details Single lens having one spherical and one aspherical... Single lens having one spherical and one aspherical...

G - Physics

02

B

88/99

G02B 13/18 (2006.01) G02B 3/04 (2006.01)

Patent

CA 1186927

ABSTRACT: A single lens is described which has one spherical and one aspherical refraction surface, which has a large diffraction-limited field and a large numerical aperture. Such lens is obtained through the compensation of third-order coma by higher-order coma.

406844

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