Illumination device and bio-information measurement device having the same

A bio-information measurement device comprising:

• a measurement device that includes a substrate and a sensor matrix in a two-dimensional region on the substrate,
• wherein the whole sensor matrix forms a sensor pixel array, the sensor matrix includes a plurality of sensor pixels, and each of the sensor pixels consists of a basic block which includes a plurality of sub sensor pixels that are arranged in multiple columns and rows to form a matrix,
• wherein each of the basic blocks includes at least an optical sensing unit and a pH sensing unit as the sub sensor pixels, and
• wherein the measurement device obtains (i) optical information and (ii) pH information for a test sample present on the sensor pixel array;
• an illumination device that includes a plurality of lighting units disposed to each correspond to a respective one of the basic blocks,
• wherein the lighting units emit light for each basic block at a light intensity to be emitted toward a region to be irradiated in the sensor pixel array of the measurement device;
• and
• a control unit configured to determine the region to be irradiated and vary the light intensity to be emitted to the region to be irradiated for each basic block, based on the pH information obtained by the measurement device, positional information on the sensor pixel array corresponding to the pH information obtained by the measurement device, and predetermined threshold conditions corresponding to the pH information obtained by the measurement device, to control light irradiation of the lighting units in accordance with the determined region and the light intensity for each basic block.