- Patent Title: Bifocal spectacle lens, computer implemented method for creating a numerical representation of same, computer program, data processing system, and non-volatile computer readable storage medium
-
Application No.: US17566897Application Date: 2021-12-31
-
Publication No.: US11372263B2Publication Date: 2022-06-28
- Inventor: Markus Welscher , Ray Steven Spratt
- Applicant: Carl Zeiss Vision International GmbH , Ray Steven Spratt
- Applicant Address: DE Aalen; US CA Petaluma
- Assignee: Carl Zeiss Vision International GmbH,Ray Steven Spratt
- Current Assignee: Carl Zeiss Vision International GmbH,Ray Steven Spratt
- Current Assignee Address: DE Aalen; US CA Petaluma
- Agency: Tautz & Schuhmacher LLC
- Agent Georg Hasselmann
- Priority: WOPCT/US2019/041939 20190716
- Main IPC: G02C7/02
- IPC: G02C7/02 ; G02C7/06

Abstract:
A bifocal spectacle lens and a method for creating a numerical representation of a bifocal spectacle lens are disclosed. The bifocal spectacle lens includes a distance portion, a near portion, and a transition section situated between the distance portion and the near portion. The distance portion is optimized in view of an optical power for distance vision and the near portion is optimized in view of an optical power for near vision. The transition section is determined such that the transition section creates a continuous transition between the distance portion and the near portion. The distance portion and the near portion are optimized independently of one another and put together with the transition section to form the numerical representation of the bifocal spectacle lens.
Public/Granted literature
Information query