Brightness colorimeter having measurement error caused by linearly polarized light, which is corrected

A brightness colorimeter having a measurement error caused by linearly polarized light, which is corrected, the brightness colorimeter comprising:

• a lens module to which light irradiated from one side is input;
• a spectral module provided in one unit block to reflect and penetrate the light input through the polarization conversion module so as to branch the light in different three directions;
• polarization conversion modules provided on progress paths of the light branched in different three directions through the spectral module, to penetrate the light branched in the different three directions;
• filter modules arranged on the progress paths of the light branched in different three directions via the polarization conversion modules, to convert the penetrated light into monochromatic light beams having specific spectra;
• and
• measurement modules arranged to correspond to exit angles of the monochromatic light beams penetrated through the filter modules, to measure at least one of a brightness, a colorimeter and a defect obtained by the monochromatic light beams.