Invention Grant
- Patent Title: Quasi progressive lenses for eyewear
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Application No.: US14274637Application Date: 2014-05-09
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Publication No.: US09618774B2Publication Date: 2017-04-11
- Inventor: Yuval Carmon , Yotam Gil , Liron Gleser , Alex Shur
- Applicant: Shamir Optical Industry Ltd.
- Applicant Address: IL Kibbutz Shamir
- Assignee: Shamir Optical Industry Ltd.
- Current Assignee: Shamir Optical Industry Ltd.
- Current Assignee Address: IL Kibbutz Shamir
- Agency: Knobbe Martens Olson & Bear LLP
- Main IPC: G02C7/06
- IPC: G02C7/06

Abstract:
Various embodiments disclose a quasi progressive lens including a first optical zone capable of providing distance vision, a second optical zone capable of providing near vision and a transition zone connecting the first and second optical zones. Physical dimensions (e.g., length and width) of the transition zone are adjusted to increase the size of the second optical zone in comparison to progressive lenses and to reduce residual cylinder power and aberrations along the convergence path in comparison to bifocal lenses.
Public/Granted literature
- US20150226983A1 QUASI PROGRESSIVE LENSES FOR EYEWEAR Public/Granted day:2015-08-13
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