Canon Kabushiki Kaisha

Yukio Furukawa

Takahisa Kato

Yasuhiro Shimada

Kazunari Fujii

Hiroshi Yamamoto

Takahiro Akiyama

Toshihiko Ouchi

Hajime Sakata

Kazutoshi Torashima

Takayuki Yagi

Kenichi Nagae

Shuichi Kobayashi

Toshinobu Tokita

Shinichiro Iimura

Shigeru Ichihara

Natsuhiko Mizutani

Hiroshi Abe

Hiroshi Nishihara

Shimpei Matsuo

Tatsuya Hotogi

Kouichi Kato

Suguru Miyagawa

Soichiro Suzuki

Ryuhei Shoji

Takashi Yuasa

Yoshitaka Baba

Daisuke Nagao

Yohei Motoki

Hisako Kyono

An information processing apparatus includes an image data acquisition unit and a template data acquisition unit. The image data acquisition unit acquires a plurality of pieces of image data generated by performing a plurality of ultrasonic wave transmission and reception operations on a subject while changing an ultrasonic wave transmission and reception mode. The template data acquisition unit acquires a plurality of pieces of template data corresponding to the plurality of ultrasonic wave transmission and reception operations, respectively. The similarity information acquisition unit acquires information indicating a similarity between an image value sequence of the plurality of pieces of image data at a target position and a template data sequence of the plurality of pieces of template data at the target position.

Information processing apparatus, information processing method, and storage medium

The present invention uses an object information acquiring apparatus having: an optical transmitter that transmits light and emits the light to an object; a first optical meter disposed at the incidence side of the optical transmitter; a second optical meter disposed at the emission side of the optical transmitter; a calculator that calculates an equation that indicates the relationship between the fluence of light measured by the first optical meter and the fluence of light measured by the second optical meter; a probe that receives an acoustic wave that is generated from the object due to the light emitted by the optical transmitter and converts the acoustic wave; and a processor that acquires specific information about the inside of the object.

Object information acquiring apparatus

A photoacoustic measuring apparatus includes a light source, a movable holding unit which holds an object, a light diffusing unit which fixes the distance between the light diffusing unit and the holding unit and diffuses light incident from the light source, and an acoustic wave obtaining unit which obtains an acoustic wave generated from the object by the light emitted via the holding unit and the light diffusing unit.

Photoacoustic measuring apparatus

This invention employs an object information acquiring apparatus including a probe for receiving, as a received signal, an acoustic wave which is generated within an object irradiated with light and propagates on an object surface, and a processor for generating object information, which is information based on an internal optical characteristic value of the object, by using intensity of the received signal. The processor corrects the intensity of the received signal by using the reflectance upon the acoustic wave entering the probe which is calculated based on the angle of the acoustic wave entering the probe, and on the acoustic impedance and acoustic velocity of the object and the probe.

Object information acquiring apparatus and object information acquiring method

A subject-information acquisition apparatus includes a light source; a holding member configured to hold a subject so as to surround the subject; at least one transducer configured to receive an acoustic wave generated by irradiating the subject with light from the light source; and a signal processing unit configured to obtain distribution information using a received signal output from the transducer. The holding member includes a marker that absorbs the light and generates an acoustic wave.

Apparatus and method for obtaining subject information, display method, and program

The present invention employs an object information acquiring apparatus that includes a light source, a holding plate configured to hold an object, a supporting unit configured to support the holding plate, and a probe configured to receive, via the holding plate, an acoustic wave generated from the object on which light is irradiated from the light source. A light reflecting member is provided between the supporting unit and the holding plate.

An acoustic wave detector includes: a transducer; and a light reflecting member which is positioned between the transducer and a subject surface that is irradiated with the light, and which reflects scattered light on the subject surface. The light reflecting member includes a first reflecting surface and a second reflecting surface positioned closer to the transducer than the first reflecting surface, and a distance between the first reflecting surface and the second reflecting surface is an odd multiple of a half wavelength of a predetermined wavelength included in an acoustic wave generated from the light reflecting member by the scattered light.

Acoustic wave detector and acoustic wave measurement apparatus

Disclosed is an object information acquiring apparatus including: a receiver that includes a plurality of elements and converts an acoustic wave generated from an object irradiated with light into a received signal, and outputs the received signal in a time series; a normalizer that generates a normalized signal by normalizing the intensity of the received signal; and a processor that generates, from the normalized signal, first image data that indicates the distribution of property information inside the object.

A light deflector device includes a light deflector having an oscillation system, a driving unit for driving the oscillation system and a drive controlling unit for supplying a drive signal. The oscillation system simultaneously generates a first oscillating motion of a first frequency and a second oscillating motion of a second frequency. The drive controlling unit supplies a drive signal formed by synthetically combining a first signal having the first frequency and a second signal having the second frequency to the driving unit and, at the same time, another drive signal for changing at least the amplitude of the first oscillating motion, the amplitude of second oscillating motion or the relative phase difference of the first oscillating motion and the second oscillating motion to the driving unit in order to correct an offset of scanning light deflected by the light deflector.

Light deflector device and image forming apparatus

Disclosed is an oscillator device that includes an oscillating system having a first oscillator, a second oscillator, a first torsion spring for connecting the first and second oscillators each other, and a second torsion spring being connected to the second oscillator and having a common torsional axis with the first torsion spring; a supporting system for supporting the oscillating system; a driving system for driving the oscillating system so that at least one of the first and second oscillators produces oscillation as can be expressed by an equation that contains a sum of a plurality of time functions; a signal producing system for producing an output signal corresponding to displacement of at least one of the first and second oscillators; and a drive control system for controlling the driving system on the basis of the output signal of the signal producing system so that at least one of amplitude and phase of the time function takes a predetermined value.

Oscillator device, optical deflecting device and method of controlling the same

An oscillator device having an oscillating member, a resilient support and a supporting member is produced. The oscillating member is supported by the resilient support for oscillation about an oscillation axis. The oscillating member is formed with a movable element having protrusions for adjusting its mass, the protrusions extending from the movable element parallel to the oscillation axis and being formed in pairs disposed at positions symmetrical with respect to the oscillation axis. A sectional area of each protrusion along a plane perpendicular to the oscillation axis is constant in the oscillation axis direction. A laser beam is projected to a cutting position of protrusions, so as to partly remove the protrusion. The protrusions are cut based on adjusting the cutting position. The sum of the lengths removed from the protrusions by the cutting becomes equal to a predetermined length to thereby adjust an inertia moment of the oscillating member.

Method of producing an oscillator device

A DBR semiconductor laser is controlled in an image projecting apparatus, which includes the DBR laser having a phase and DBR region, a light wavelength converting device for converting fundamental-wave light emitted from the DBR laser into second harmonic wave light, an optical deflector for scanning the second harmonic wave in a one or two-dimensional manner, and a modulating portion for modulating the DBR laser. Coefficient calculating and wavelength adjusting steps are performed within a non-drawing time. The coefficient calculating step calculates at least one coefficient in a relationship between a DBR current to be injected into the DBR region and a phase current to be injected into the phase region for continuously shifting the wavelength of the fundamental-wave light. The wavelength adjusting step changes DBR current injected into the DBR region and phase current injected into the phase region based on the relationship.

Control method of distributed Bragg reflection semiconductor laser, and image projecting apparatus

An optical deflector includes a supporting member, a first movable element having a light deflecting element, at least one second movable element, at least one first torsion spring configured to support the first and second movable elements, for torsional oscillation about an oscillation axis, at least one second torsion spring configured to support the second movable element and the supporting member, for torsional oscillation about the oscillation axis, and a driving system configured to apply a driving force to at least one of the first and second movable elements, wherein a moment of inertia of the second movable element with respect to the oscillation axis is larger than a moment of inertia of the first movable element with respect to the oscillation axis, and wherein a length of the second movable element in a direction perpendicular to the oscillation axis is equal to or less than a length of the first movable element in a direction perpendicular to the oscillation axis.

Growing community of inventors

Sagamihara, Japan

Yukio Furukawa