Invention Grant
- Patent Title: Progressive addition lens for myopia control and method of manufacturing the same
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Application No.: US18159273Application Date: 2023-01-25
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Publication No.: US11782293B2Publication Date: 2023-10-10
- Inventor: Saulius Raymond Varnas , Ray Steven Spratt , Timo Kratzer , Gerhard Kelch , Siegfried Wahl
- Applicant: Carl Zeiss Vision International GmbH , Ray Steven Spratt
- Applicant Address: DE CA Aalen
- Assignee: Carl Zeiss Vision International GmbH
- Current Assignee: Carl Zeiss Vision International GmbH
- Current Assignee Address: DE Aalen
- Agency: Tautz & Schuhmacher LLC
- Agent Georg Hasselmann
- Priority: WO TUS2020045459 2020.08.07
- Main IPC: G02C7/06
- IPC: G02C7/06 ; G02C7/02

Abstract:
A progressive addition lens contains a plurality of microlenses for providing simultaneous myopic defocus. The microlenses are superimposed on a power variation surface of the lens, which includes a designated distance portion in the upper section of the lens adapted for distance vision and a fitting cross; a designated near portion located in the lower section of the lens, the near portion including a near reference point having a near dioptric power adapted for near vision; and a designated intermediate corridor extending between the designated distance portion and near portions. Microlenses are excluded from all areas of the surface located below a notional line extending from nasal to temporal limits of the lens at a vertical coordinate above the near reference point where the vertical coordinate lies at a distance above the near reference point with the distance being in a range between 1.5 mm and 3 mm.
Public/Granted literature
- US20230161177A1 PROGRESSIVE ADDITION LENS FOR MYOPIA CONTROL AND METHOD OF MANUFACTURING THE SAME Public/Granted day:2023-05-25
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