Patent application number | Description | Published |
20120302866 | PHOTOACOUSTIC IMAGING APPARATUS AND PHOTOACOUSTIC IMAGING METHOD - A photoacoustic imaging apparatus includes a detector that outputs detection signals by detecting acoustic waves generated at surfaces and an inner portion of a sample by irradiating the sample with light; and a signal processing unit that generates image data using the detection signal. The signal processing unit calculates an average sound speed in the inner portion of the sample by using the detection signal of the acoustic wave generated at the surface of the sample and propagated through the inner portion of the sample, and generates the image data using the average sound speed and the detection signal of the acoustic wave generated at the inner portion of the sample. | 11-29-2012 |
20130160557 | ACOUSTIC WAVE ACQUIRING APPARATUS - Provided is a technique capable of changing resolution or an imaging area during imaging, in an acoustic wave acquiring apparatus using a Fabry-Perot probe. An acoustic wave acquiring apparatus includes a measurement light source emitting measurement light, a probe having a Fabry-Perot interferometer including a first mirror, upon the side of which the measurement light is incident, and a second mirror, upon the side of which an elastic wave from an object is incident, an optical system changing a beam diameter of the measurement light, a controller controlling change in the beam diameter performed by the optical system, a photosensor measuring a light intensity of the measurement light reflected on the Fabry-Perot interferometer, and a processor acquiring intensity of the elastic wave on the basis of change in the light intensity measured by the photosensor due to incidence of the elastic wave. | 06-27-2013 |
20130267823 | MEASURING APPARATUS - A measuring apparatus has a holding unit for holding an object, and a probe including a receiving element for receiving through the holding unit an acoustic wave generated by the object irradiated with light. The light is applied to an object surface held by the holding unit. The probe is arranged such that a direction of a normal to the object surface held by the holding unit is nonparallel to a direction in which the receiving element exhibits its highest reception sensitivity. | 10-10-2013 |
20140066743 | OBJECT INFORMATION ACQUIRING APPARATUS - An object information acquiring apparatus is used which includes a first light source outputting irradiation light delivered to an object, an output unit to which the irradiation light is guided and which includes an opening smaller than a wavelength of the irradiation light, a probe detecting an acoustic wave generated when the object absorbs near-field light output by the output unit, and a signal processing unit acquiring information on an interior of the object from the acoustic wave detected by the probe. | 03-06-2014 |
20140076055 | ACOUSTIC WAVE RECEIVING APPARATUS - Use of an acoustic wave receiving apparatus which includes: a resonator including a first mirror on which measurement light is incident, a second mirror which is arranged to face the first mirror and on which acoustic waves from an object are incident, an acoustic wave reception layer interposed between the first mirror and the second mirror, and a compensation layer; and a detector for detecting a variation in an optical path length between the first mirror and the second mirror that occurs in response to deformation of the acoustic wave reception layer caused by incidence of the acoustic waves, wherein the variation in the optical path length due to a film thickness distribution of the acoustic wave reception layer is compensated by refraction in the compensation layer. | 03-20-2014 |
20140118749 | ACOUSTIC SIGNAL RECEIVING APPARATUS AND IMAGING APPARATUS - There is used an acoustic signal receiving apparatus including a wavelength-tunable light source for irradiating measurement light, a controller for controlling a wavelength of the measurement light, a Fabry-Perot probe having a first mirror on a side where the measurement light enters, a second mirror on a side where an elastic wave from an object enters, and a spacer film positioned between the first and second mirrors and deforms in response to the elastic wave, an array photosensor for detecting a reflected light amount of the measurement light by the Fabry-Perot probe, and a signal processor for acquiring an intensity of the incident elastic wave based on a change in the reflected light amount. The controller sweeps the wavelength of the measurement light, and the signal processor determines the wavelength based on the reflected light amount at each wavelength subjected to the sweep. | 05-01-2014 |
20160022149 | OBJECT INFORMATION ACQUIRING APPARATUS AND CONTROL METHOD THEREOF - Provided is an object information acquiring apparatus including: a light source; a controller that controls irradiation of light from the light source; a detector that receives an acoustic wave generated from an object onto which light from the light source is irradiated; a processor that generates characteristic information inside the object using the acoustic wave received by the detector; and an acquirer that acquires the shape of the object, wherein the controller controls an irradiation area when light is irradiated from the light source onto the object, based on the shape of the object acquired by the acquirer. | 01-28-2016 |