Invention Grant
- Patent Title: Ophthalmic lens and method of manufacturing ophthalmic lens
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Application No.: US16804969Application Date: 2020-02-28
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Publication No.: US10792147B2Publication Date: 2020-10-06
- Inventor: Yosuke Okudaira
- Applicant: Nikon Corporation
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: SGPatents PLLC
- Main IPC: A61F2/16
- IPC: A61F2/16 ; A61F2/14 ; G02C7/02 ; G02C7/04

Abstract:
An ophthalmic lens to be attached in or near an eyeball includes a first region that is near an optical axis; a second region that is farther from the optical axis than the first region; and a third region that is farther from the optical axis than the second region, the first region applies a first phase difference of 3 rad or more of a third phase difference with respect to the third region; the second region applies a second phase difference continuously connecting phase differences of the first region and the third region, and continuously changing in accordance with a distance from the optical axis; and the third region applies the third phase difference varying in accordance with the distance from the optical axis around a reference value, wherein a variation amplitude of the third phase difference is not less than 0.1 rad and less than the first phase difference.
Information query
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