| 摘要 |
An optical measuring machine comprises an optical detection unit (7) equipped with lighting means (8) and video capturing means (9), a support (4), interposed between the lighting means (8) and the video capturing means (9), comprising a transparent panel (6) defining a supporting stage (A) for a workpiece (100) to be measured and positioned along an optical path (B) to be crossed by the light beam. The machine also comprises a check master (20) connected to the support (4) and placed in a plane located at a distance from the video capturing means (9) equal to the focal length (F), in order to define an element of comparison for correcting a measuring error, wherein said check master (20) comprises a first segment (23a) and a second segment (23b) forming a substantially L-shaped structure disposed along the periphery of the transparent panel (6), at least partly delimiting the measuring area (M), extending along at least one direction transversal to the direction of movement (C) and positioned within the measuring area (M) of the machine. |
