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US 11,454,794 B2Granted
Systems and methods for conducting contact-free thickness and refractive-index measurements of intraocular lenses using a self-calibrating dual confocal microscopy
AssigneeThe United States of America, as represented by the Secretary, Department of Health and Human Services
InventorsDo-Hyun Kim, Ilko Kolev Ilev, Robert Harold James, Don Calogero
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Abstract
Systems and methods for conducting contact-free thickness and refractive-index measurements of transparent objects, such as intraocular lenses using a dual confocal microscopy system are disclosed.
Claims11
A method for noncontact measurement of an object comprising:
- aligning a first confocal microscope with a second confocal microscope along a beam axis;
- positioning an object having a first reflective side and an opposite second reflective side between the first confocal microscope and the second confocal microscope;
- measuring the first reflective side of the object by the first confocal microscope at a first position and measuring the second reflective side of the object by the second confocal microscope at a second position;
- and
- calibrating the first confocal microscope and the second confocal microscope based on the measurements of the first reflective side and the second reflective side at the first and second positions.
2 more elements
Dependencies are inferred from the claim text.