Device and method for designing ophthalmic lens
AssigneeHon Hai Precision Industry Co., Ltd.
InventorWEN-KAI LI
Life of this patent
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Abstract
A device and method for designing an ophthalmic lens includes a design of shape according to a Zernike polynomial, and calculating a curvature of each point of the target surface shape to obtain a curvature distribution overall. A diopter distribution over the target surface shape corresponding to the obtained curvature distribution is calculated, and the calculated diopter distribution is matched against a preset diopter distribution. If matching, a processing machine is controlled to manufacture the ophthalmic lens according to the Zernike polynomial. If not matching, the Zernike polynomial is modified, until the actual surface shape as measured is sufficiently close to the target surface shape.
Claims10
A device for designing an ophthalmic lens, comprising:
- at least one processor;
- and
- a memory coupled to the at least one processor and storing one or more programs, wherein when executed by the at least one processor, the one or more programs causing the at least one processor to:
- design a target surface form of the ophthalmic lens according to a Zernike polynomial, and calculate a curvature of each point of the target surface form to obtain a curvature distribution over the target surface form;
- calculate a diopter distribution over the target surface form corresponding to the obtained curvature distribution, and determining whether the calculated diopter distribution matches a preset diopter distribution;
- control a processing machine to manufacture the ophthalmic lens according to the Zernike polynomial when the calculated diopter distribution matches the preset diopter distribution;
- measure an actual surface form of the manufactured ophthalmic lens, and determine whether the measured actual surface form is sufficiently close to the target surface form;
- and
- modify the Zernike polynomial when the measured actual surface form is not sufficiently close to the target surface form, until the measured actual surface form is sufficiently close to the target surface form.
A method for designing an ophthalmic lens, comprising:
- designing a target surface form of the ophthalmic lens according to a Zernike polynomial, and calculating a curvature of each point of the target surface form to obtain a curvature distribution over the target surface form;
- calculating a diopter distribution over the target surface form corresponding to the obtained curvature distribution, and determining whether the calculated diopter distribution matches a preset diopter distribution;
- controlling a processing machine to manufacture the ophthalmic lens according to the Zernike polynomial when the calculated diopter distribution matches the preset diopter distribution;
- measuring an actual surface form of the manufactured ophthalmic lens, and determining whether the measured actual surface form is sufficiently close to the target surface form;
- and
- modifying the Zernike polynomial when the measured actual surface form is not sufficiently close to the target surface form, until the measured actual surface form is sufficiently close to the target surface form.
Dependencies are inferred from the claim text.