Abstract: Provided is a photoacoustic measuring apparatus. The apparatus comprises an ultrasonic sensor configured to detect a photoacoustic wave generated in a photoacoustic wave generating area in the measurement target in a predetermined frequency band, wherein with a light-incident position and a beam width of the laser light, a center of the photoacoustic wave generating area, and a position of the ultrasonic sensor given according to a predetermined geometry, the frequency band of the ultrasonic sensor may be configured to include a frequency corresponding to a wavelength equal to twice the beam width at the point of light incidence.

Abstract: Provided is a photoacoustic measuring apparatus. The apparatus comprises a light source configured to emit laser of a predetermined wavelength to a measurement target, a photoacoustic detector configured to detect a photoacoustic signal generated from the measurement target receiving the laser light emitted from the light source, a contact sensor including a first bioimpedance electrode, a second bioimpedance electrode, and a third bioimpedance electrode and configured to obtain a bioimpedance value when the electrodes come into contact with the measurement target and an operator during use of the photoacoustic measuring apparatus, and a controller configured to decide whether the apparatus is in proper contact with the measurement target and whether the operator and the measurement target are the same individual based on a bioimpedance value measured using the contact sensor.

Abstract: Provided is a photoacoustic measuring apparatus. The apparatus comprises a light source configured to provide laser light of a predetermined wavelength to a measurement target, a photoacoustic detector configured to detect a photoacoustic signal generated from the measurement target receiving the laser light emitted from the light source, a contact sensor configured to measure a bioimpedance of the measurement target, and a controller configured to determine whether the photoacoustic measuring apparatus is in proper contact with the measurement target based on a bioimpedance value measured using the contact sensor.

Abstract: Provided is a photoacoustic measuring apparatus. The apparatus comprises an ultrasonic sensor configured to detect a photoacoustic wave generated in a photoacoustic wave generating area in the measurement target in a predetermined frequency band, wherein with a light-incident position and a beam width of the laser light, a center of the photoacoustic wave generating area, and a position of the ultrasonic sensor given according to a predetermined geometry, the frequency band of the ultrasonic sensor may be configured to include a frequency corresponding to a wavelength equal to twice the beam width at the point of light incidence.

Abstract: Provided is a photoacoustic measuring apparatus. The apparatus comprises a light source configured to emit laser of a predetermined wavelength to a measurement target, a photoacoustic detector configured to detect a photoacoustic signal generated from the measurement target receiving the laser light emitted from the light source, a contact sensor including a first bioimpedance electrode, a second bioimpedance electrode, and a third bioimpedance electrode and configured to obtain a bioimpedance value when the electrodes come into contact with the measurement target and an operator during use of the photoacoustic measuring apparatus, and a controller configured to decide whether the apparatus is in proper contact with the measurement target and whether the operator and the measurement target are the same individual based on a bioimpedance value measured using the contact sensor.

Abstract: The present disclosure discloses a photoacoustic diagnostic device. More specifically, the present invention relates to a photoacoustic diagnostic device that detects ultrasound waves generated by irradiating a biological surface with a laser to noninvasively determine blood sugar concentration, or the like in a biological body. According to an embodiment of the present invention, the photoacoustic diagnostic device is equipped with a membrane element manufactured by a micro electro mechanical system (MEMS) process, and instead of mounting an expensive FFT, or the like on a transducer for receiving an ultrasound wave signal radiated from a subject and detecting a resonance peak or using a spectrum analyzer, by detecting multiple resonance peaks through multiple transducers with different resonance frequencies and combining the resonance peaks to perform analysis on blood sugar, or the like, it is possible to provide analysis results with high accuracy that are easy to implement and low cost.