Progressive addition lens

Details Progressive addition lens Progressive addition lens

G - Physics

02

C

88/99

G02C 7/06 (2006.01) G02C 7/02 (2006.01)

Patent

CA 1190074

PROGRESSIVE ADDITION LENS_ ABSTRACT A progressive addition lens is provided having a wide transition corridor and an improved balance between astigmatism and distortion in the field of peripheral vision to provide a wide, distortion-free clear view. This is achieved by employing a cosine function in blending the transition corridor with the peripheral area.

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