公开(公告)号：US10288423B2

公开(公告)日：2019-05-14

申请号：US15102596

申请日：2014-12-09

Applicant: HATCH PTY LTD

Inventor： Owen Pearcey

IPC: G01C3/02 ,  C23C2/20 ,  G01B11/06 ,  G01B11/02 ,  C23C2/00

Abstract: A measuring apparatus, for measuring the distance to a surface having fluctuating reflectivity, the measuring apparatus comprising, a measuring light source and sensor unit positioned at an angle to the perpendicular of the surface to allow the light to be reflected to a diffuse target surface in a known position; and a processor unit, wherein the processor unit is adapted to collect and analyze data from the a measuring light source and sensor unit and classify whether the reading of the measuring light source and sensor unit is a direct reading or a reflected reading.