Method for determining optimum thickness of ophthalmic lens
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United States of America Patent
Stats
-
Feb 25, 1986
Grant Date -
N/A
app pub date -
Jun 6, 1983
filing date -
Sep 24, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for determining the optimum thickness of an ophthalmic lens comprises the steps of applying data indicative of the kind of a lens suitable for a spectacle wearer and the contents of a prescription as inputs to a computer, executing necessary computation by the computer according to a predetermined program on the basis of the various input data thereby drawing a map of an equi-thickness line group of the ophthalmic lens on the basis of the result of computation, and placing a spectacle frame at a predetermined position on the map of the equi-thickness line group to find out the outermost equi-thickness line within the extent of the frame.
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