Invention Grant
- Patent Title: Optical visual aid with additional astigmatism
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Application No.: US15594338Application Date: 2017-05-12
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Publication No.: US10168549B2Publication Date: 2019-01-01
- Inventor: Arne Ohlendorf , Rainer Sessner , Timo Kratzer , Katharina Rifai , Christian Lappe
- Applicant: Carl Zeiss Vision International GmbH
- Applicant Address: DE Aalen
- Assignee: Carl Zeiss Vision International GmbH
- Current Assignee: Carl Zeiss Vision International GmbH
- Current Assignee Address: DE Aalen
- Agency: Ewers & Hasselmann PLLC
- Priority: DE102014223341 20141114; AT50281/2015 20150410
- Main IPC: A61B3/02
- IPC: A61B3/02 ; G02C7/02 ; G02C7/06 ; G02C7/08

Abstract:
An optical visual aid is disclosed that assists an observer looking at an object through at least one spectacle lens. The optical visual aid has a dioptric power matched to an eye of the observer for at least one viewing direction. The dioptric power is composed of a plurality of dioptric power components. A first dioptric power component of the plurality of dioptric power components has a best possible corrective power for the eye of the observer at a defined distance of the object from the corneal vertex of the eye for the viewing direction. At the same time, a further dioptric power component of the plurality of dioptric power components has an additional astigmatic, partly corrective power for the viewing direction for the eye of the observer at the defined distance.
Public/Granted literature
- US20170261767A1 OPTICAL VISUAL AID WITH ADDITIONAL ASTIGMATISM Public/Granted day:2017-09-14
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