Lens Customizing Method
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United States of America Patent
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Issued Date -
Jan 5, 2012
app pub date -
Dec 24, 2009
filing date -
Dec 24, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Method for customizing an initial ophthalmic lens, the initial ophthalmic lens being customized so as to provide a customized ophthalmic lens, the method comprising: a initial ophthalmic lens data providing step (S1) in which initial data representing the initial ophthalmic lens is provided; a constraint data providing step (S2) in which constraint data comprises at least the outline, the minimum thickness at the optical centre and the minimum thickness at the edges of the initial ophthalmic lens; a prism determining step (S3) in which the prism to be applied to the initial ophthalmic lens so as to minimize the difference between the value of the chosen geometrical parameter of the customized ophthalmic lens and a desired value of the chosen geometrical parameter is determined, wherein the angle of the prism is smaller than or equal to 10.degree.; and the customized ophthalmic lens fulfils the same constraint as the initial ophthalmic lens.
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