Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Max Co., Ltd.

Other

Fujifilm Corporation

Masahiko Hashimoto

Hidetomo Nagahara

Akihisa Adachi

Takehiko Suginouchi

Ushio Sangawa

Takuya Iwamoto

Masaaki Suzuki

Yuriko Kaneko

Toshiharu Sato

Takashi Hashida

Seigo Shiraishi

Yuji Nakabayashi

Kenzo Ohji

Norihisa Takahara

Kazuhiko Hashimoto

Masaichiro Tatekawa

Yuji Fujii

Yasuhiro Umekage

Fumikazu Shiba

Yukio Nagaoka

Shuji Abe

Osamu Eguchi

Norihisa Mino

Makoto Kato

Shinichiro Ueno

Yong Wang

Shinichi Yamamoto

Minoru Kubo

Tadashi Morita

Hiroyoshi Komobuchi

Masayoshi Miura

Keisuke Fujimoto

Michio Okajima

Kiyohide Amemiya

Naoko Azuma

Akihiro Yamamoto

Katsuhiko Asai

Kiyoyuki Morita

Masakazu Tanahashi

Hiroshi Fukukita

Katsu Takeda

Emiko Igaki

Kazuo Yokoyama

Yousuke N Irie

Yutaka Kato

Takahiro Yonezawa

Tatsuo Sasaoka

Tsutomu Yano

Yoshitaka Kitaoka

Toru Ishida

Shigeru Iwanaga

Atsushi Watanabe

Yoshiyuki Sugiyama

Hiroyuki Kiyomura

Shigenori Yamaguchi

Tetsuya Tokunaga

Koichi Saito

Toshio Hiranuma

Tooru Ninomiya

Haruo Ohmori

Youichi Muraoka

Naoki Tanaka

Kenji Sano

Takuji Watanabe

To provide a head adjustment device, a head device, and a printing apparatus with which it is possible to perform automatic position adjustment of a head module in a head including one or more head modules. Provided is a head adjustment device () which adjusts a position of a head module in a head including one or more head modules, the head adjustment device () including an adjustment unit that includes an actuator that is connected to an adjustment member, which is operated in a case where the position of the head module is to be adjusted, and operates the adjustment member, a movement unit () that moves the adjustment unit relative to the head, and a movement control unit () that sets coordinates to be applied to the movement unit based on a reference position of the head module and moves the adjustment unit based on coordinate values of the adjustment member.

Head adjustment device, head device, and printing apparatus

A detection apparatus that includes correlation processing systems that each find a correlation between a predetermined code sequence and a wave detection signal obtained by detecting a phase-modulated input wave at a frequency different from a frequency used by a different one of the correlation processing systems, and thereby generate a correlation signal, level reduction processors that each receive the correlation signal from a corresponding one of the plurality of correlation processing systems and reduce a level of the received correlation signal when the correlation signal is not to be used for detection of the target or do not reduce the level of the received correlation signal when the correlation signal is to be used for detection of the target, and a detector that detects at least presence or absence of the target based on the correlation signal processed by each of the plurality of level reduction processors.

Detection apparatus, detection method, and detection program

A detection device includes: a first correlation circuit that computes correlation of a first wave detection signal, which is a phase-modulated input wave detected at determined frequency, with a determined code sequence for every code composing the determined code sequence, and to generate first correlation signals the number of which corresponds to a code sequence length, which is a length of the determined code sequence; and a control circuit that rotates phases of the first correlation signals, generates an added value by adding the phase-rotated first correlation signals, and determines based on the added value whether the phase-modulated input wave is a return wave from a determined object.

Detection device, detection method, and detection program

Ultrasonic sensor

An optical microphone includes: an acousto-optic medium section having a pair of principal surfaces and at least one lateral surface provided therebetween; a restraint section which is in contact with the at least one lateral surface for preventing a shape change of the acousto-optic medium section; and a light emitting section for emitting a light wave so as to propagate through the acousto-optic medium section between the pair of principal surfaces. The pair of principal surfaces are in contact with an environmental fluid through which an acoustic wave to be detected is propagating and are capable of freely vibrating, and an optical path length variation of a light wave propagating through the acousto-optic medium section, which is caused by the acoustic wave that comes into the acousto-optic medium section from at least one of the pair of principal surfaces and propagates through the acousto-optic medium section, is detected.

Optical microphone

An optical microphone for detecting an acoustic wave propagating through an environmental fluid by using a light wave, includes: an acoustic wave receiving section having a propagation medium portion through which an acoustic wave propagate and a first support portion for supporting the propagation medium portion; a light source for outputting a light wave so that the light wave passes through the propagation medium portion across the acoustic wave propagating through the propagation medium portion; a light-blocking portion having an edge line for splitting the light wave having passed through the propagation medium portion into a blocked portion and a non-blocked portion; and a photoelectric conversion section for receiving a portion of the light wave having passed through the propagation medium portion which has not been blocked by the light-blocking portion to output an electric signal.

A porous silica material disclosed in the present application is a porous silica material in which a plurality of silica particles are connected to one another three-dimensionally, wherein: a density of the porous silica material is less than 220 kg/m; a particle diameter of the silica particles is 3.5 nm or more; and the water content of the porous silica material is 8 wt % or less.

Porous silica material and optical microphone

A porous silica material in which silica particles are connected to one another three-dimensionally, wherein: the porous silica material includes a through hole including first pores smaller than a mean free path of an air, and second pores larger than the first pores; the porous silica material has a density of 100 kg/mor more and 300 kg/mor less; and an isobutyl group is bound to silicon of silica of the silica particles.

Porous silica material and optical microphone using the same

An optical microphone includes: a light source; a first polarizer for allowing linearly-polarized light, of light output from the light source, to pass therethrough; a second polarizer for allowing linearly-polarized light having a different polarization plane from the first polarizer to pass therethrough; a sound-receiving section including an acoustic medium having a smaller sound velocity than the air, wherein an acoustic signal propagates through the acoustic medium, the sound-receiving section being arranged so that the linearly-polarized light from the first polarizer passes through the acoustic medium and enters the second polarizer; and a photodetector for converting an intensity of light having passed through the second polarizer to an electric signal, wherein between the first polarizer and the second polarizer, the linearly-polarized light having passed through the first polarizer is given different phase shifts in two orthogonal directions which are each different from a polarization direction.

An optical microphone includes: a propagation medium portion; a light source to output a light wave passing through the propagation medium portion across the acoustic wave propagating through the propagation medium portion; a reflecting section to retroreflect the light wave having passed through the propagation medium portion; and a photoelectric conversion section to receive the light wave having been reflected by the reflecting section and passed through the propagation medium portion to output an electric signal. 0-order, +1-order and &#x2212;1-order diffracted light waves are respectively produced on outward and return paths, by virtue of a refractive index distribution across the propagation medium portion caused by the propagation of the acoustic wave therethrough. The photoelectric conversion section detects interference light between the +1-order or &#x2212;1-order diffracted light wave of the outward path and the &#x2212;1-order or +1-order diffracted light wave of the return path.

There is provided an optical microphone for detecting an acoustic wave propagating in an ambient fluid, the optical microphone including: a propagation medium section; a light source for emitting a light wave to be transmitted through a diffraction region in the propagation medium section; and a photoelectric conversion section for detecting the light wave having been transmitted through the propagation medium section. A first acoustic wave which is a portion of the acoustic wave and a second acoustic wave which is another portion thereof are allowed to propagate in the propagation medium section so as to simultaneously arrive at the diffraction region, and an interference component between a +1order diffracted light wave and a &#x2212;1order diffracted light wave of the light wave generated based on a refractive index distribution of the propagation medium occurring in the diffraction region.

An ultrasonic measuring method includes: (A) receiving a coded spread spectrum ultrasonic signal in at least two receivers, and generating at least two received signals; (B) performing an quadrature detection on the received signals using the carrier frequency, and producing I and Q components of the received signals; (C) performing phase difference processing on the I and Q components with a coding period synchronized with that of the carrier frequency, and obtaining I' and Q&#x2032; components from which a phase shift caused by a Doppler shift has been canceled; (D) despreading the I&#x2032; and Q&#x2032; components signals using different codes at time intervals synchronized with the carrier frequency, and obtaining despread I&#x2033; and Q&#x2033; components; (E) computing the amplitude and phase information based on the I&#x2033; and Q&#x2033; components; and (F) calculating the propagation distance and/or orientation of the ultrasonic wave based on the amplitude and phase information.

Ultrasonic measuring method and ultrasonic measuring apparatus

A method of producing a porous silica material includes: preparing a raw material solution containing silicon alkoxides including diisobutyldimethoxysilane and tetramethoxysilane in such a mass ratio that a mass of the diisobutyldimethoxysilane is 0.25 or more and 1 or less per mass of the tetramethoxysilane, and a solvent; obtaining a wet gel by adding, to the raw material solution, an aqueous solution containing a catalyst for promoting hydrolysis and condensation polymerization of the silicon alkoxides, the aqueous solution having a pH of 8.9 or more and 11.3 or less; washing the wet gel; and drying the washed wet gel under supercritical conditions.

Method for producing porous silica material

An optical ultrasonic microphone includes an acoustic waveguide that transmits a sound wave received from an opening, an optical acoustic propagation medium that forms at least one portion of a wall face of the acoustic waveguide and an LDV head, and a sound wave proceeding through the acoustic waveguide is received by the optical acoustic propagation medium so that a change in the refractive index caused by the proceeding sound wave inside the optical acoustic propagation medium is generated with high efficiency, and by detecting this as an optical modulation by the LDV head, the optical ultrasonic microphone is allowed to have a very wide band.

Optical ultrasonic microphone

An optoacoustic convolver includes: a light source; a first acoustic waveguide filled with a light-transmissive first acoustic medium; a second acoustic waveguide filled with a light-transmissive second acoustic medium; an optical system whereby light emitted from the light source is split into a first light beam and a second light beam, the first light beam entering the first acoustic waveguide, and the second light beam entering the second acoustic waveguide, thereby generating interference light between the first light beam having passed through the first acoustic waveguide and the second light beam having passed through the second acoustic waveguide; a light-receiving section for receiving the interference light and outputting an electric signal based on an intensity of the received light; and a correlation determination section for determining whether the received signal is correlated with the reference signal by observing the electric signal output from the light-receiving section.

Optoacoustic convolver

Growing community of inventors

Osaka, Japan

Masahiko Hashimoto