Process and device for the projection of image information for p

Details Process and device for the projection of image information for p Process and device for the projection of image information for p

1994-09-26

1999-02-23

Sikes, William L.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351209, 348 54, A61B 314

Patent

active

058750185

ABSTRACT:
A process and device for the projection of image information before at least one eye (A1,A2) of a person having a visual impairment is disclosed. The visual impairment is caused by a deviation of the angular position of the optical axis of one eye (A2) in relation to the optical axis of the other eye (A1), i.e., cross-eyed. The process and/or device enables a cross-eyed person to see stereoscopically over a long period of time without any restriction in his/her field of vision. According to the process, one eye (A1) is selected as the leading eye, the movement of the leading eye (A1) is then detected, the position of the optical axis of that eye (A1) is determined from the detected movement, and image information is projected before the non-leading eye (A2) while taking an angular deviation into account. The projected image information is identical with the image information which the non-leading eye would perceive if its optical axis was in a position corresponding to the angular position of the leading eye. The device according to the invention comprises, means (1,2) for detecting movement of at least one eye (A1) and means (3,2) for projecting an image information before the other eye (A2) while taking into account an angular deviation. The image information projected before the other eye (A2) is identical to the image information which the other eye (A2) would perceive if the position of its optical axis were to coincide with the angular position of the at least one eye (A1)

REFERENCES:
patent: 5422689 (1995-06-01), Knapp et al.

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