Patent ID: 9588060
Date: 2017-03-07
CPC Classifications: G01B,G01N

Claim:
1. A non-destructive inspection apparatus comprising: a light source generating light; an optical coupler which divides the generated light, irradiates the divided light to a reference part and a sample part, generates coherent light by combining light reflected and incident from the reference part and the sample part, and transmits the coherent light to a detecting part; the reference part which phase-scans the light incident from the optical coupler and includes a reference mirror to reflect the light; the sample part which irradiates the light incident from the optical coupler to a display panel, and includes a scanner to scan and reflect the light reflected from the display panel; the detecting part including a spectrometer to obtain an image signal of the display panel from the coherent light incident from the optical coupler; a transferring device which moves a position of the sample part up and down according to the scanning of the light reflected from the display panel by the sample part so that the display panel is located at a predetermined scan area, thereby enabling automatic focusing on the display panel to be inspected; and a controller comprising at least one processor configured to: