Method of designing aspherical spectacle lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 17, 2006
Grant Date -
Jan 12, 2006
app pub date -
Jul 11, 2005
filing date -
Jul 12, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of designing a spectacle lens having a front surface and a back surface is provided. At least one of the front and back surfaces is formed as a rotationally asymmetrical aspherical surface. The method includes the steps of selecting a plurality of cross-sections of the spectacle lens respectively defined in a plurality of planes each of which includes a reference axis passing through the front and back surfaces at a point substantially equal to a center of an outer diameter of the spectacle lens, each of the plurality of cross-sections having one side coinciding with the reference axis, designing each of shapes of the plurality of cross-sections so that predetermined optical performance is optimized for each of the shapes of the plurality of cross-sections, and interpolating a characteristic amount regarding intermediate points on the rotationally asymmetrical aspherical surface between the shapes of the plurality of cross-sections using a characteristic amount of each of the shapes of the plurality of cross-sections.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully