Method for determining a local refractive index and device therefor
AssigneeIsra Surface Vision GmbH
InventorsROLF KUBIAK, CHRISTIAN RIPPERDA
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Abstract
A method for determining a local refractive index in a volume element of a transparent object using a pattern includes observing the pattern through the transparent object by a first camera, determining, using the observed pattern, a three-dimensional (3-D) shape and position of a surface of a particular volume element of the transparent object facing the pattern and using the determined 3-D shape and surface position of the particular volume element, determining a local refractive index for the particular volume element.
Claims14
A method for determining a local refractive index in a volume element of a transparent object using a pattern, the method comprising the steps of:
- observing the pattern through the transparent object by a first camera;
- using the observed pattern, determining a three-dimensional (3-D) shape and position of a surface of a particular volume element of the transparent object facing the pattern;
- and
- using the determined 3-D shape and surface position of the particular volume element, determining a local refractive index for the particular volume element.
A device for determining a local refractive index in a volume element of a transparent object using a predefined pattern, comprising:
- a first camera for capturing an image of the predefined pattern through the transparent object;
- means for determining a three-dimensional (3-D) shape and position of a surface of a particular volume element of the transparent object facing the pattern in reliance upon the captured image;
- wherein the means for determining utilizes the 3-D shape and position of the surface of the particular volume element to determine a local refractive index for the particular volume element.
Dependencies are inferred from the claim text.