公开(公告)号：US09823064B1

公开(公告)日：2017-11-21

申请号：US14488141

申请日：2014-09-16

Applicant: Amazon Technologies, Inc.

Inventor： Muhammad Arief Adityaputra ,  Mathieu Hampton ,  Romaric Mathieu Massard

IPC: G01B11/26

CPC classification number: G01B11/26

Abstract: Subject matter disclosed herein relates to arrangements and techniques that provide for improving contact angle measurement of a liquid droplet on an interface. An apparatus for measuring contact angles of a liquid droplet on a substrate comprises a platform configured to support the substrate and a camera configured to capture images of a liquid droplet on the interface. The apparatus further comprises multiple light sources to illuminate the liquid droplet along multiple direction and multiple optical paths to direct light illuminating the liquid droplet to the camera.