05116111 is referenced by 72 patents and cites 1 patents.

A multifocal ophthalmic lens has diffractive power produced by a plurality of concentric zones. The zones have radii that meet the condition

Title
Multi-focal diffractive ophthalmic lenses
Application Number
176701
Publication Number
5116111
Application Date
February 11, 1991
Publication Date
May 26, 1992
Inventor
John A Futhey
Petaluma
CA, US
Michael J Simpson
Maplewood
MN, US
Agent
Stephen W Buckingham
Walter N Kirn
Gary L Griswold
Assignee
Minnesota Mining and Manufacturing Company
MN, US
IPC
A61F 2/16
A61F 2/14
G02B 27/42
G02C 7/04
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