Takahiro Masumura
Takahiro Masumura, Tuscon, AZ US
Patent application number | Description | Published |
---|---|---|
20110071402 | APPARATUS AND METHOD FOR IRRADIATING A MEDIUM - A method for irradiating a medium includes irradiating the medium with an electromagnetic wave which is scattered in the medium and modulated in frequency at a position in the medium; obtaining information corresponding to an interference pattern generated by interference between the modulated electromagnetic wave and a reference wave; and generating a phase conjugate wave, based on the obtained information, which irradiates the medium. | 03-24-2011 |
20120127557 | APPARATUS AND METHOD FOR IRRADIATING A MEDIUM - An apparatus includes an irradiating unit, a spatial light modulator configured to modulate a wavefront of an electromagnetic wave, a device configured to receive a signal from a position of the medium by irradiating the electromagnetic wave, and a controller configured to control the spatial light modulator based on the received signal so that the irradiated electromagnetic wave with the modulated wavefront focuses on the position in the medium. | 05-24-2012 |
Takahiro Masumura, Tucson, AZ US
Patent application number | Description | Published |
---|---|---|
20100069750 | MEASUREMENT APPARATUS AND MEASUREMENT METHOD - A measurement apparatus includes a measurement unit configured to irradiate three types of ultrasonic waves and light upon a test region in a test object, and to measure modulated light and non-modulated light, the modulated light being modulated by an acousto-optical effect, and a signal processor configured to calculate a modulation depth that is an intensity of the modulated light divided by an intensity of the non-modulated light for the one, and at least one of a scattering characteristic and an absorption characteristic of the test region in the test object by utilizing a first change rate of the modulation depth to an amplitude of the one or an amount corresponding to the first change rate, and a second change rate of the modulation depth to a frequency of the one or an amount corresponding to the second change rate. | 03-18-2010 |
20100070233 | MEASUREMENT APPARATUS - A measurement apparatus includes an elastic detector configured to detect an elastic wave by utilizing a PAT and to convert the elastic wave into a detection signal, and a signal processor configured to calculate an absorption characteristic of a heterogeneous part included in a homogeneous part of a scattering medium based on μ | 03-18-2010 |
20100094561 | APPARATUS AND METHOD FOR PROCESSING BIOLOGICAL INFORMATION - A biological information processing apparatus includes the following elements. A light source irradiates biological tissue with light. A transducer functions as an ultrasonic wave transmitting unit that applies an ultrasonic wave to a local region in the biological tissue. A photodetector detects modulated light obtained by modulating the light from the light source with the ultrasonic wave in the local region. The transducer also functions as an acoustic wave detecting unit that detects an acoustic wave emitted from the local region at a time when the local region absorbs the light from the light source. An absorption characteristic in the local region is calculated using an acoustic signal, serving as an output of the acoustic wave detecting unit, on the basis of a light intensity in the local region calculated based on a modulation signal, serving as an output of the photodetector. | 04-15-2010 |
20100319453 | PHOTOACOUSTIC MEASUREMENT APPARATUS - Disclosed is a photoacoustic measurement apparatus that irradiates a light beam onto a subject, from a same side as that of an acoustic wave detector, and that measures photoacoustic waves. The photoacoustic measurement apparatus has: an acoustic wave detector; a diffraction grating member provided in front of a detection surface of the detector; a light source that generates a light beam; and an optical system that guides the light beam from the light source towards the diffraction grating member. The diffraction grating member is configured such that the light beam led to the diffraction grating member is outputted by the diffraction grating member towards a subject surface that opposes the detection surface of the detector. As a result, light beams can strike a biological body in a near-perpendicular angle. This affords greater illumination efficiency, and allows light of substantial light energy to be irradiated deep inside biological structures. | 12-23-2010 |
20120300608 | APPARATUS AND METHOD FOR IRRADIATING A MEDIUM - A method for irradiating a medium with a wave which is designed to focus on a particular portion in the medium, the method includes: irradiating the medium with an electromagnetic wave which is scattered in the medium, and is not designed to focus on the particular portion in the medium; detecting a first signal caused by irradiating the medium with the electromagnetic waver; irradiating the medium with a reconstructed wave which is designed to focus on the particular portion in the medium; detecting a second signal caused by irradiating the medium with the reconstructed wave; and monitoring, based on the first and second signals, that the particular portion is irradiated by the reconstructed wave. | 11-29-2012 |
Takahiro Masumura, Tokyo JP
Patent application number | Description | Published |
---|---|---|
20090066949 | MEASUREMENT METHOD AND MEASUREMENT APPARATUS - A measurement method of measuring a spectroscopic characteristic inside of a scattering medium includes | 03-12-2009 |
20090069674 | MEASUREMENT APPARATUS - A measurement apparatus is configured to measure a spectroscopic characteristic of a measurement site in a specimen by applying acousto-optical tomography. The measurement apparatus includes a measurement unit configured to measure a light intensity of each of measurement areas that are set differently from the measurement site on a light propagation path from the measurement site to a detection position of a light detector and a signal processing device configured to sequentially modify the spectroscopic characteristics of the measurement areas and the measurement site on the light propagation path from the detection position of the light detector to the measurement site by using a light intensity that is measured by the measurement unit in the measurement area that is closer to a surface layer of the specimen than the measurement site. | 03-12-2009 |
20090069685 | MEASUREMENT APPARATUS - A measurement apparatus measures a spectroscopic characteristic and a structural characteristic of a specimen. At the measurement site of the specimen, a modulation of light from the light source part by an acousto-optical effect and a generation of the ultrasound echo signal simultaneously occur, the light detecting unit detects modulated light that is simultaneously generated, and the ultrasound detecting unit detects the ultrasound echo signal that is simultaneously generated. | 03-12-2009 |
Takahiro Masumura, Utsunomiya-Shi JP
Patent application number | Description | Published |
---|---|---|
20120182558 | APPARATUS AND METHOD FOR IRRADIATING A SCATTERING MEDIUM - An apparatus includes a light source configured to emit an electromagnetic wave; a spatial light modulator configured to modulate a wavefront of the electromagnetic wave to irradiate a sample; a plate with an aperture; a lens unit configured to set a focal point in the sample; a detector configured to detect light coming from the focal point of the sample through the aperture; and a controller configured to control the spatial light modulator based on the detected light by the detector. | 07-19-2012 |
20120182561 | APPARATUS AND METHOD FOR IRRADIATING A MEDIUM - A method for irradiating a medium includes irradiating the medium with an electromagnetic wave which is scattered in the medium and modulated in frequency at a position in the medium; obtaining information corresponding to an interference pattern generated by interference between the modulated electromagnetic wave and a reference wave; and generating a phase conjugate wave, based on the obtained information, which irradiates the medium. | 07-19-2012 |
20120182591 | APPARATUS AND METHOD FOR IRRADIATING A SCATTERING MEDIUM - An apparatus includes a low-coherent light source configured to emit an electromagnetic wave; a spatial light modulator configured to modulate a wavefront of the electromagnetic wave; an interferometer including a movable mirror to set a depth of a medium to be irradiated by the electromagnetic wave and a beam splitter configured to the electromagnetic wave into a reference beam and an object beam; a detector to detect information about an interference pattern formed by the object beam coming from the medium via the beam splitter and the reference beam reflected by the movable mirror; and a controller configured to control the spatial light modulator, based on the information, to form a modulated wavefront for irradiating the medium. | 07-19-2012 |