Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate
2007-10-16
2007-10-16
Stultz, Jessica (Department: 2873)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
C351S212000, C351S213000
Reexamination Certificate
active
11186733
ABSTRACT:
A corneal topography slit image alignment system10,includes a half-slit projector14for projecting half-slit images onto a patient's eye16.Half-slit images28and30are aligned into a single slit image. A camera18captures an image of the aligned slit image. Processor20including a memory26connected to the half-slit projector12and the camera18analyzes the alignment of the half-slit images28and30.An edge detector22detects the edges of each captured half-slit image and determines an amount of misalignment of the half-slit images28and30relative to half-slit images being aligned into a single slit image. This amount of misalignment allows computer processor20to correct the three-dimensional coordinates of the slit images obtained by a slit beam system14.
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International Search Report (PCT/ISA/210) and Written Opinion (PCT/ISA/237) mailed on Dec. 5, 2006.
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