A method for determining a surface topology of a workpiece
AssigneeEastman Kodak Company
InventorsThomas W. Dey, Philip F. Marino
Life of this patent
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Abstract
A method for determining a surface topology of a workpiece preferably comprising a general symmetric asphere. The method includes the steps of coupling a projectile to a surface of a workpiece, and imparting a trajectory to the projectile with respect to the surface; sensing the trajectory of the projectile with respect to the workpiece surface, for assessing a locus of positional points over time of the projectile, the locus being a measure of the surface topology of the workpiece; and computing from the locus of positional points over time, the surface topology of the workpiece.
Claims3
A method suitable for determining a surface topology of a workpiece, comprising the steps of:
- (1) coupling a projectile to a surface of a workpiece, and imparting a trajectory to the projectile with respect to the surface;
- (2) sensing the trajectory of the projectile with respect to the workpiece surface, for assessing a locus of positional points over time of the projectile, the locus being a measure of the surface topology of the workpiece;
- and
- (3) computing from said locus of positional points over time, the surface topology of said workpiece.
Dependencies are inferred from the claim text.