Method and apparatus for measuring wavefront aberrations
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsLarry G. Jones, Denwood Ross
Life of this patent
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Abstract
An apparatus and method for measuring wavefront aberrations. A beam splitter separates the aberrated wavefront into two components, mirror arrays focus each of the components to a plurality of discrete lines with the discrete lines of one component having a different orientation than the discrete lines of the other component, and an imaging device detects the discrete lines to determine wavefront aberrations. The method includes separating the wavefront into two components, focusing each of the components into a plurality of discrete lines with the discrete lines of one component having a different orientation than the discrete lines of the other component, and detecting information related to the discrete lines.
Claims24
A sensor for detecting aberrations of a wavefront emitted from an optical system, said sensor comprising:
- a beam splitter for receiving the wavefront and separating the wavefront into a first component having a first polarization and a second component having a second polarization, said first polarization being distinguishable from said second polarization;
- a first mirror array reflecting and focusing said first component to a first plurality of discrete lines having a first orientation;
- a second mirror array for reflecting and focusing said second component to a second plurality of discrete lines having a second orientation different from said first orientation;
- and
- an imaging device for detecting said first plurality of discrete lines and said second plurality of discrete lines.
An apparatus for measuring aberrations of a wavefront emitted from an optical system, comprising:
- a beam splitter for receiving and separating the wavefront into a first component having a first polarization and a second component having a second polarization, said first polarization being distinguishable from said second polarization;
- a first mirror array for reflecting and focusing said first component to a first plurality of discrete lines having a first orientation;
- a second mirror array for reflecting and focusing said second component to a second plurality of discrete lines having a second orientation different from said first orientation;
- and
- an imaging device for detecting information related to said first plurality of discrete lines and said second plurality of discrete lines;
- and
- a processor for computing wavefront aberrations from the detected information received from said imaging device.
A method for measuring a wavefront emitted from an eye comprising the steps of:
- (a) separating the wavefront into a first component and a second component;
- (b) focusing said first component to a first series of discrete lines having a first orientation, and focusing said second component to a second series of discrete lines having a second orientation, said second orientation being different from said first orientation;
- and
- (c) detecting information related to said first series of discrete lines and said second series of discrete lines for determining the aberrations of the wavefront.
Dependencies are inferred from the claim text.