Apparatus for detecting particles in flat glass and detecting method using same

The present invention relates to an apparatus for detecting particles in flat glass and a detecting method using the same. The present invention provides an apparatus for detecting particles in flat glass, comprising: an illumination unit which is installed in one region selected from upper and lower regions on the basis of flat glass; a first polarizer which is installed between the illumination unit and the flat glass, and has a first polarization direction; a first camera and a second camera which are installed in the opposite direction where the illumination unit is installed on the basis of the flat glass; a second polarizer which is equipped in a space between the first camera and the flat glass, and has a polarization direction in the range of 0° to 20° that is different from the polarization direction of the first polarizer; a fourth polarizer which is equipped in a space between the second camera and the flat glass, and has a polarization direction in the range of 70° to 90° that is different from the polarization direction of the first polarizer; and a processor which receives images obtained from the first camera and the second camera, and decides whether defects are benign particles or malignant particles.