Body fat measurement apparatus and method of operating the apparatus

A non-transitory computer-readable recording medium storing an executable program for implementing a method of measuring a body fat by using a body fat measurement device comprising an optical detector and at least two light source units, the method comprising:

• illuminating a biological tissue with a first light source unit with a corresponding first source intensity and a second light source unit with a second source intensity;
• detecting an optical signal which is scattered from the biological tissue by the optical detector, and measuring an optical signal intensity corresponding to the at least two light source units;
• calculating a slope with respect to a first optical signal intensity and a second optical signal intensity by using a distance between the first light source unit and the second light source unit of the at least two light source units, and a difference between the first optical signal intensity and the second optical signal intensity, the first optical signal intensity corresponding to the first light source unit and the second optical signal intensity corresponding to the second light source unit;
• and
• measuring a thickness of body fat of the biological tissue from the calculated slope,
• wherein the first optical source intensity and the second optical source intensity are different from each other due to using different numbers of light sources.

A body fat measurement apparatus comprising:

• at least two light source units, including a first light source unit with a corresponding first source intensity and a second light source unit with a corresponding second source intensity, configured to emit a light to a biological tissue;
• an optical detector configured to detect an optical signal, which is scattered from the biological tissue, and to convert the detected optical signal into an electrical signal;
• an optical signal intensity measurement unit configured to measure an intensity of the detected optical signal corresponding to the at least two light source units;
• and
• a body fat measurement unit configured to measure a thickness of body fat of the biological tissue by calculating a slope based on a first optical signal intensity and a second optical signal intensity by using a distance between the first light source unit and the second light source unit, and a difference between the first optical signal intensity and the second optical signal intensity,
• wherein the first optical source intensity and the second optical source intensity are different from each other due to using different numbers of light sources.