Apparatus and method for analyzing substance of object

An apparatus for analyzing a substance of an object, the apparatus comprising:

• a sensor part including an image sensor wherein the image sensor being disposed at the center of the sensor part, a plurality of first light sources disposed evenly around the image sensor, the image sensor comprising a plurality of pixels wherein the plurality of light sources are disposed to face each other diagonally with respect to the image sensor;
• and a second light source for fingerprint recognition;
• and
• a processor configured to:
• drive the second light source to perform user authentication based on a fingerprint image of a finger obtained by the image sensor, and based on a successful user authentication;
• drive the plurality of first light sources to obtain absorbance of each pixel of the image sensor based on an intensity of light received by each pixel;
• correct, for each pixel of the plurality of pixels, the absorbance of each pixel by applying, to the obtained absorbance of each pixel, a value obtained according to a pre-defined function for a distance between the plurality of first light sources and each pixel;
• and
• analyze a substance of an object based on the corrected absorbance of each pixel,
• wherein the processor is further configured to sequentially drive a group of the plurality of light sources, the light sources in the group having different wavelengths and are driven in a time division manner in a predetermined direction centered around the sensor part.

A method of analyzing a substance of an object, the method comprising:

• emitting light onto an object by driving a plurality of light sources disposed evenly around an image sensor, the image sensor being disposed at the center of a sensor part comprising a plurality of pixels;
• receiving light, scattered or reflected from the object, through the image sensor;
• obtaining absorbance of each pixel of the image sensor based on an intensity of light received by each pixel;
• correcting, for each pixel of the plurality of pixels, the absorbance of each pixel by applying, to the obtained absorbance of each pixel, a value obtained according to a pre-defined function for a distance between the plurality of light sources and each pixel;
• and
• analyzing a substance of an object based on the corrected absorbance of each pixel,
• wherein in the emitting light, light is emitted under processor control to sequentially drive a group of the plurality of light sources, the light sources in the group having different wavelengths and are driven in a time division manner in a predetermined direction centered around the sensor part.