Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use
Reexamination Certificate
2006-05-09
2006-05-09
Winakur, Eric F. (Department: 3735)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Methods of use
C351S205000, C351S206000, C351S221000, C382S287000, C382S294000
Reexamination Certificate
active
07040759
ABSTRACT:
Apparatus and methods can determine positional and rotational offsets between a first and second imaging device. Embodiments may determine the relative offsets between a Hartmann-Shack wavefront sensor and a pupil camera using a calibration apparatus having a rotationally asymmetric aperture. The image obtained by the Hartmann-Shack wavefront sensor way comprise a spot pattern that corresponds to a shape of the aperture. A marker may be superimposed over the images, with a shape of the marker substantially corresponding to the shape of the aperture, and movements of the marker from nominal positions on each image can be compared to determine the offsets.
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Chernyak Dimitri
Persoff Jeffrey J.
Barrish Mark D.
Sanders John R.
Townsend&Townsend&CrewLLP
VISX Incorporated
Winakur Eric F.
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