Ophthalmic lens
AssigneeYoung Optics Inc.
InventorsChing-Sheng CHANG, CHENG-HUNG CHEN, CHING-LUN LIN, MING-LIN LEE
Life of this patent
Estimating the term…
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AssigneeYoung Optics Inc.
InventorsChing-Sheng CHANG, CHENG-HUNG CHEN, CHING-LUN LIN, MING-LIN LEE
Estimating the term…
An ophthalmic lens includes a first lens group having a positive refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power. The first lens group includes a first lens, and a lens in the second lens group closest to the first lens group is a second lens. The ophthalmic lens satisfies the condition of 0.65<R1/R2<7.69, where R1 is a shortest distance from a central axis of an optical surface of the first lens to an outermost turning point of the optical surface of the first lens, and R2 is a shortest distance from a central axis of an optical surface of the second lens to an outermost turning point of the optical surface of the second lens.
An ophthalmic lens, comprising:
An ophthalmic lens, comprising:
Dependencies are inferred from the claim text.