Instrument for optical examination of curved internal surfaces, projects annular beam onto internal surface and returns reflected light to camera

摘要

A beam guidance component (24) is introduced along the axis of the cavity (14). A source (18) emits the electromagnetic beam (2), which is converted to an annular beam (22'). This is projected using a half-silvered mirror (21) into the guide (24), and via a segmented conical mirror (26), onto the internal wall of the cavity. This reflects a beam (23) via the conical mirror to a CCD camera with a flat detection matrix. The data obtained, are sent to an evaluation unit (38). An independent claim is included for corresponding apparatus.