Patent · US Active

Heads-up vision analyzer

US9895058B2 · kind B2 · utility

5Cited by

15References

29Claims

0Family size

Assignee

Carl Zeiss Meditec AG · DE

Inventors

Christopher Baker · Moraga, US
Tobias Buehren · Magdala, DE
James Foley · Santa Monica, US

Key dates

Filing date	Mar 26, 2012
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Mar 26, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B3/152
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A binocular vision analyzer apparatus is used for determining a prescription of visual aids for the eyes of an individual. The apparatus includes first and second targets respectively corresponding to the first and second eyes of the individual and at least one illuminator unit for illuminating the targets. An optical system is configured to present respective virtual images of the first and second targets so as to be viewable by the respective first and second eyes. At least one beam splitter disposed in front of the first and second eyes directs the virtual images toward the respective eyes. The apparatus also includes first and second spherical correction devices and first and second cylindrical correction devices that respectively correspond to the first and second eyes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.