Patent ID: 8095211

Claim:
A body fat measuring device that measures a visceral fat amount of a subject, comprising: a plurality of electrodes that are contactable with a waist portion of the subject; an impedance measurer that measures an impedance between a subset of the plurality of electrodes; at least one optical sensor that includes a light source that is configured to apply light to the waist portion of the subject and a light receiver that receives reflected light, the plurality of electrodes and the at least one optical sensor being configured to be provided at a single location; a subcutaneous fat thickness measurer that measures a subcutaneous fat thickness of the subject based on a value detected by the at least one optical sensor; and a body fat determiner that computes the visceral fat amount by subtracting a subcutaneous fat amount that is determined based on the subcutaneous fat thickness measured by the subcutaneous fat thickness measurer from a total fat amount of the subject which is obtained from the impedance measured by the impedance measurer, wherein the plurality of electrodes include plural sets of electrodes that are configured to be contactable with different directly opposing positions on the waist portion of the subject; wherein the plurality of electrodes includes a first pair of conductive electrodes that are configured to be directly opposed to each other across the waist portion of the subject for measuring the impedance, wherein the plurality of electrodes includes a second pair of conductive electrodes that are configured to be directly opposed to each other across the waist portion of the subject and between which voltage is detected, and wherein each of the second pair of conductive electrodes adjoin corresponding electrodes from the first pair of conductive electrodes.