Patent ID: 8591032
Filing Date: 2013-11-26
Classification: A61B

Abstract:
1. An a scanning wavefront aberrometer comprising: a laser operable to emit a laser beam; a scanning mirror operable to scan the laser beam over at least a +/−15 degree scan; and a double pass scanning lens system comprising a telescopic pair of lenses, wherein each of the lenses within said telescopic pair comprises at least a three component lens, said double pass scanning lens system operable to receive the laser beam from the scanning mirror and direct the laser beam to a spot on a patients entrance pupil plane and operable to receive reflected light from the patient's eye and direct the reflected light to a sensor operable to sense the reflected light; wherein the lens system optically conjugates the center of the scanning mirror with the center of the patient's entrance pupil and optically conjugates an entrance aperture of the sensor with the patient's entrance pupil, the lens system being configured to minimize scanning pass aberration of the laser beam over the range of said at least +/−15 degree scan, and the lens system being configured to minimize reflection pass aberration of light reflected from the eye over the range of said at least +/−15 degree scan.