Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Kenji Narumi

Kenichi Nishiuchi

Shigeaki Furukawa

Tetsuya Akiyama

Seiji Nishiwaki

Naoyasu Miyagawa

Masahiro Birukawa

Eiji Ohno

Nobuo Akahira

Ken'ichi Nagata

Hiroyuki Yamaguchi

Teruhiro Shiono

Noboru Yamada

Rie Kojima

Takashi Ishida

Mamoru Shoji

Atsushi Nakamura

Shunji Ohara

Yasuhiko Adachi

Michihiro Yamagata

Yasuhisa Inada

Tsuguhiro Korenaga

Keiichi Matsuzaki

Masahiko Tsukuda

Norihiro Imamura

Takashi Nishihara

Takamasa Ando

Morio Tomiyama

Joji Anzai

Takeo Ohta

Yuuko Tomekawa

Haruhiko Habuta

Satoshi Arimoto

Kosaku Saeki

Jin Muraoka

Yumiko Ohno

Eiichi Ito

An optical device includes an optical deflector that emits, through a light exit surface parallel to a first direction and a second direction intersecting the first direction and in a direction intersecting the light exit surface, an optical beam having a shape extending in the second direction and that is configured to cause a direction of emission of the optical beam to change along the first direction and an optical element, placed on a path of the optical beam, that expands an extent of spread of the optical beam in the second direction.

Optical device

A biometric apparatus includes a light source, an image sensor, a control circuit, and a signal processing circuit. The control circuit causes a light source to repeatedly emit a light pulse radiated onto a target part including a head of a target, causes an image sensor to receive a reflected light pulse which is caused as the light pulse is radiated onto the target part, causes the image sensor to output first image data indicating appearance of a face of the target, and causes the image sensor to output second image data according to distribution of an amount of light of at least one of components of the reflected light pulse. The signal processing circuit generates data indicating a state of the target based on a temporal change in the first image data and a temporal change in the second image data and outputs the data.

Biometric apparatus, biometric method, and non-transitory computer-readable storage medium

A structural body includes a first dielectric layer and a second dielectric layer which is in contact with the first dielectric layer and which has a refractive index different from that of the first dielectric layer. The second dielectric layer includes at least two dielectric films different in hydrogen concentration from each other. The interface between the first dielectric layer and the second dielectric layer has periodic first irregularities.

Structural body, imaging device and method for manufacturing the structural body

A photo-detection system includes: a photo-detection apparatus including a light-shielding film, an optically-coupled layer, and a photodetector including first and second photo-detection cells; and an arithmetic circuit that generates, based on first signals and second signals, third signals each representing coherence of light having entered a position of each of the first and second photo-detection cells and generates at least one selected from the group consisting of an average value of the third signals, a standard deviation of the third signals, a ratio between the standard deviation and the average value, and a ratio between an average value of a first portion of the third signals based on light having entered the positions of the first photo-detection cells and an average value of a second portion of the third signals based on light having entered the positions of the second photo-detection cells.

Photo-detection system comprising photo-detection apparatus including light-shielding film, optically-coupled layer, and photodetector and arithmetic circuit

A photo-detection apparatus includes a light-shielding film, an optically-coupled layer, a photodetector, and an optical system. In the light-shielding film, light-transmitting regions and light-shielding regions are alternately arranged in at least a first direction within a plane. The optically-coupled layer faces the light-shielding film and includes a grating that propagates light in the first direction. The photodetector includes first photo-detection cells and second photo-detection cells arranged on an imaging area. The optical system is disposed between the optically-coupled layer and the photodetector. An image of light transmitted by parts of the optically-coupled layer that face each of the light-transmitting regions and light-shielding regions is enlarged or reduced by the optical system and formed on a corresponding one of the first and second photo-detection cells.

Photo-detection apparatus including light-shielding film, optically-coupled layer, photodetector, and optical system

An imaging apparatus includes an image sensor, an optical system, a control circuit, and a signal processing circuit. The image sensor includes a light-shielding film in which light-transmitting regions and light-shielding regions are alternately arranged in at least a first direction within a plane, a photodetector disposed opposite the light-shielding film, and an optically-coupled layer disposed between the light-shielding film and the photodetector. The optically-coupled layer includes a grating which generates a propagating light that propagates in the first direction and a transmitting light that transmits the optically-coupled layer when light of a predetermined wavelength enters the light-transmitting regions. The signal processing circuit extracts two different frames from frames included in a moving image acquired by the image sensor.

Imaging apparatus including image sensor, optical system, control circuit, and signal processing circuit

A photodetection device including an image sensor that includes first pixels and second pixels; an interference element that includes incident regions; and illumination that emits light in a first wavelength band and a second wavelength band. The interference element causes first interference of light in the first wavelength band incident on two incident regions, and guides resultant light of the first interference to any of the first pixels and guides another part of the light in the first wavelength band to any of the second pixels, and causes second interference of part of the light in the second wavelength band incident on the two incident regions, and guides resultant light of the second interference to any of the first pixels and guides another part of the light in the second wavelength band incident on the two incident regions to any of the second pixels.

Photodetection device including interference element

A light detection device includes a light detector including first detectors and second detectors both disposed along a main surface; a light coupling layer disposed on or above the light detector; and a light shielding film disposed on the light coupling layer. The light coupling layer includes a first low-refractive-index layer, a first high-refractive-index layer that is disposed on the first low-refractive-index layer and includes a first grating, and a second low-refractive-index layer that is disposed on the first high-refractive-index layer. The light shielding film includes a light transmitting region and a light shielding region adjacent to the light transmitting region. The light transmitting region faces two or more first detectors included in the first detectors, and the light shielding region faces two or more second detectors included in the second detectors.

Light detection device including light detector, light coupling layer, and light shielding film, and light detection system including same

A light detection device includes a light detector including a first detector and a second detector; a light coupling layer disposed on or above the light detector; and a polarizer array that is disposed on the light coupling layer. The light coupling layer includes a first low-refractive-index layer, a first high-refractive-index layer including a first grating and a second grating adjacent to the first grating, and a second low-refractive-index layer in this order. The polarizer array includes a first polarizer that transmits light polarized in one direction and a second polarizer that is adjacent to the first polarizer and blocks the light polarized in the one direction. The first grating and the first polarizer face the first detector, and the second grating and the second polarizer face the second detector.

Light detection device including light detector, light coupling layer, and polarizer array, and light detection system including same

A photodetection device comprises: an image sensor that includes first pixels, second pixels, third pixels, and fourth pixels; an interference element that includes first incident regions and second incident regions; and an optical system that causes light in a first wavelength band to be incident on the first incident regions and causes light in a second wavelength band different from the first wavelength band to be incident on the second incident regions. The interference element causes first interference of part of the light in the first wavelength band incident on two first incident regions that are included in the first incident regions. The interference element also causes second interference of part of the light in the second wavelength band incident on two second incident regions.

An imaging apparatus comprises a lens optical system including a lens and having first through nth optical regions (n is an integer equal to or greater than 2), an image sensor including pixel groups each including first through nth pixels, an optical element array disposed between the lens optical system and the image sensor and including optical components each guiding light that has passed through the first through nth optical regions to the respective first through nth pixels in each of the pixel groups, and an optical absorption member on which light reflected by the imaging surface of the image sensor is incident. The optical absorptance of the optical absorption member is substantially uniform across the entire wavelength bands of light that passes through the first through nth optical regions and is substantially uniform across the entire optical absorption member.

Imaging apparatus and imaging system

An imaging apparatus includes a lens optical system including a lens, a stop, and first through nth divided optical elements in which first through nth optical regions are defined, respectively, along a plane perpendicular to an optical axis and positioned to be point-symmetric with respect to the optical axis, an image sensor, and a microlens array guiding light that has passed through the first through nth optical regions to the first through nth pixels of the image sensor, respectively. At least three of s, . . . , and Sare mutually different and a relation of s&#x2267;sis satisfied, where s, . . . , and srepresent mean luminances of images obtained from the first through nth pixels, respectively. The first optical region and the nth optical region are positioned not to be point-symmetric to each other with respect to the optical axis.

Imaging apparatus and analyzing apparatus

Provided are an optical information recording medium and an optical information recording device that enable to accurately form recording marks each having a certain code length and to accurately reproduce information, even in the case where shingled write recording is applied to optical information recording. An optical information recording medium () is provided with a user area () configured such that optical characteristics of a photosensitive recording material are changed by irradiation of laser light for recording information. The user area () includes recording tracks () on which information is recorded by overwriting a part of recording marks (), and a heat insulating area () which is concentrically or spirally formed, and insulates heat generated by irradiation of the laser light. The heat insulating area () is formed between the recording tracks ().

Optical information recording medium and optical information recording device

The information recording medium () of the present invention includes: an information layer () including a recording layer () capable of changing its phase containing at least one selected from Ge&#x2014;Te, Sb&#x2014;Te and Ge&#x2014;Sb, and two or more dielectric layers () disposed on the optical beam incident side with respect to the recording layer (); and a transparent layer () disposed on the optical beam incident side with respect to the information layer () adjacent to the information layer, made of a transparent material with respect to the optical beam, and having a refractive index n of 1.75 or more. When two dielectric layers () from the near side to the transparent layer () each are referred to as a dielectric layer b () and a dielectric layer a () from the optical beam incident side among the two or more dielectric layers (), a relationship of the refractive index n of the transparent layer, a refractive index nof the dielectric layer b () and a refractive index nof the dielectric layer a satisfies n&#x3c;n&#x3c;n. In the information recording medium () of the present invention, information can be recorded or reproduced by means of an optical system having a numerical aperture (NA)&#x3e;1 by irradiation with optical beam.

Information recording medium and recording/reproducing method for the same

The present invention accurately operates a tilt servo even if a gap servo is operated with a small gap. A condensing unit () generates a near-field light and condenses a laser beam on an optical disk (), a light quantity detection unit () detects light quantity of return light from an area where the near-field light is generated, a gap control unit () controls a gap between the condensing unit () and the optical disk () based on the light quantity of the return light, a tilt calculation unit () calculates, in a state of controlling the gap, an inclination amount between the condensing unit () and the optical disk () based on the light quantity of the return light, a tilt error signal generation unit () generates from the inclination amount a tilt error signal, which is a signal from which a fluctuation component of the return light generated due to decentering of the optical disk () is removed, and a tilt control unit () controls the inclination between the condensing unit () and the optical disk () based on the tilt error signal.

Optical information reproduction device, optical information recording device, optical information reproduction method, and optical information recording method

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Osaka, Japan

Kenji Narumi