Method for testing an OCT device and test object
OwnerEva Lankenauinventor
Life of this patent
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Abstract
A method for testing an OCT device (14), in which a first test object (27) is arranged in an OCT beam path (16) of an OCT device (14). The first test object (27) comprises a layered structure (29) made up of a plurality of transparent layers and an entry body (30). OCT light emitted by the OCT device (14) enters the entry body (30) via an entry surface and propagates through the entry body (30) up to the layered structure (29). An entry surface of the entry body (30) is shaped as a lens surface (31). The invention also relates to a test object (27), which can be used in such a method.
Claims12
A method for testing an OCT device (14), in which a first test object (27) is arranged in an OCT beam path (16) of the OCT device (14), wherein the first test object (27) comprises a layered structure (29) made of a plurality of planar transparent layers and an entry body (30), wherein OCT light emitted by the OCT device (14) enters the entry body (30) via an entry surface and propagates through the entry body (30) up to the layered structure (29), and wherein the entry surface of the entry body (30) is shaped as a lens surface (31), wherein the OCT light is convergent before entering the lens surface (31) and is focused by the first test object (27) within the layered structure, said method determining one or more of the following parameters of the tested OCT device:
- axial depth of the measurement window, OCT roll-off, numerical aperture, OCT sensitivity, signal-to-noise ratio, and image curvature.
A test object for use in testing an OCT device (14), comprising a layered structure (29) made up of a plurality of layers and an entry body (30), wherein the layered structure (29) and the entry body (31) consist of materials transparent to OCT light, an entry surface of the entry body is shaped as a lens surface (31) configured to focus a convergent beam within the layered structure (29), wherein an interface formed between each of two adjacent layers of the layered structure is a planar surface.
Dependencies are inferred from the claim text.