Invention Publication
- 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.: US20230161177A1Publication Date: 2023-05-25
- Inventor: Saulius Raymond Varnas , Ray Steven Spratt , Timo Kratzer , Gerhard Kelch , Siegfried Wahl
- Applicant: Ray Steven Spratt , Carl Zeiss Vision International GmbH
- Applicant Address: US CA Petaluma
- Assignee: Ray Steven Spratt,Carl Zeiss Vision International GmbH
- Current Assignee: Ray Steven Spratt,Carl Zeiss Vision International GmbH
- Current Assignee Address: US CA Petaluma
- Priority: WO TUS2020045459 2020.08.07
- Main IPC: G02C7/02
- IPC: G02C7/02 ; G02C7/06

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
- US11782293B2 Progressive addition lens for myopia control and method of manufacturing the same Public/Granted day:2023-10-10
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