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US 2003/0169402 A1Published application
Method and device for calibrating an optical wavefront system
AssigneeVISX, Incorporated
InventorJeffrey Jonathan Persoff
Life of this patent
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AssigneeVISX, Incorporated
InventorJeffrey Jonathan Persoff
Estimating the term…
The present invention provides methods and devices for calibrating an optical wavefront system. The calibration devices of the present invention can include a body which has a proximal portion and a distal portion. A pupil can be positioned on the proximal portion of the body to aperture light. A target can be positioned on the distal portion of the body so as to reflect light back through the pupil and into the wavefront system. If the device has a lens assembly or a phase plate, the reflected light can pick up known aberrations or defocus characteristics from the lens assembly before it enters the calibration device. The known wavefront characteristic can be compared to the wavefront measurement obtained by the wavefront system to aid in calibrating the wavefront system.
A method of calibrating an imaging device, the method comprising:
A calibration tool comprising:
19 The calibration tool of claim 18 wherein the target is movably coupled to the body.
A calibration tool for a wavefront system, the calibration tool comprising:
Dependencies are inferred from the claim text.