Patent ID: 9593939
Date: 2017-03-14
CPC Classifications: G01B,H05K

Claim:
1. A material inspection system comprising: a. a unit under inspection comprising a substrate and a transparent material, wherein the substrate comprises a surface, the transparent material is coupled to a first portion of the surface and a second portion of the surface is exposed; b. a laser detector comprising a laser light source and a sensor, wherein the laser detector is positioned relative to the unit under inspection such that a laser light output from the laser light source impinges a sample point on the unit under inspection and the laser light has a non-vertical incident angle relative to the surface of the substrate, further wherein the sensor is configured to receive a mirror reflected light corresponding to the laser light; c. a controller configured to receive data from the sensor corresponding to the received mirror reflected light and to determine a distance measurement corresponding to the sample point; and d. a movement and alignment apparatus coupled to the unit under inspection and the laser detector, wherein the movement and alignment apparatus is configured to provide relative movement of the laser detector and the movement and alignment apparatus so as to determine the distance measurement at multiple sample points, at least one sample point on the second portion of the substrate and at least one sample point on the transparent material,