Abstract: The present invention relates to a photoacoustic diagnostic apparatus and method using a combination of single-wavelength laser lights, and more particularly, to a photoacoustic diagnostic apparatus and method enabling the miniaturization of photoacoustic equipment because they irradiate a subject with a combination of single-wavelength laser lights. The photoacoustic diagnostic apparatus according to one embodiment of the present invention may comprise: a light source configured to irradiate a subject with light consisting of a combination of single-wavelength laser lights; a detection unit configured to acquire sound emitted by the light; and a control unit configured to calculate the concentration of glucose in the blood of the subject by analyzing the sound.

Abstract: The present invention relates to a photoacoustic diagnosis apparatus and method for measuring blood sugar in blood by measuring a change in shape of a membrane by sound waves, and more particularly, to a photoacoustic diagnosis apparatus and method for adjusting a frequency response of a diagnosis apparatus by adjusting a size of a membrane. A photoacoustic diagnosis apparatus according to an embodiment of the present invention includes a light source radiating sound by radiating light to a subject, a plurality of sound receivers provided with a membrane whose shape is changed by the sound, and a measuring unit measuring a change in shape of the membrane, in which the membranes of the plurality of sound receivers have different sizes.