Hitachi, Ltd.

Maxell, Ltd.

Hitachi Media Electronics Co., Ltd.

Other

Inphase Technologies, Inc.

Hitachi Consumer Electronics Co., Ltd.

Nichia Corporation

Hoya Corporation

Hitachi Maxell, Limited

Pentax Corporation

Hitachi Computer Peripherals Co., Ltd.

Akonia Holographics LLC

Maxell Joei Tech Co., Ltd.

Hitachi, Litd.

Takeshi Shimano

Harukazu Miyamoto

Shigeru Nakamura

Akira Arimoto

Takeshi Maeda

Kunikazu Ohnishi

Masayuki Inoue

Hiroyuki Awano

Tatsuro Ide

Shigeharu Kimura

Yukio Fukui

Tetsuo Ariyoshi

Yusuke Nakamura

Kevin R Curtis

Takahiro Kurokawa

Kenchi Ito

Kimio Tatsuno

Ken E Anderson

Yooji Maruyama

Mitsuhiko Oota

Koichi Maruyama

Hisataka Sugiyama

Hirofumi Sukeda

Kazuo Shigematsu

Friso Schlottau

Kazuyuki Tajima

Ken'ichi Shimada

Motoyasu Terao

Toshimichi Shintani

Takeshi Nakao

Hirohisa Sano

Kouichirou Wakabayashi

Fumio Isshiki

Mariko Umeda

Osamu Komoda

Kouichi Sakita

Masahide Tokuda

Mitsuhiko Ota

Hiroyuki Minemura

Toshiaki Tanaka

Tohru Sasaki

Atsushi Saito

Shuichi Takeuchi

Hideki Saga

Sumio Hosaka

Kenichi Shimada

Junko Ushiyama

Keikichi Andoo

Makoto Okai

Shinji Fujita

Tsukuru Ohtoshi

Koichi Sakita

Toshimasa Kamisada

Takao Kuroda

Hideharu Mikami

Yasuyuki Sugi

Masaya Horino

Nobuyuki Maeda

Mayu Sao

Atsuko Niwa

Motoyuki Suzuki

Shigeo Nakamura

Takuya Matsumoto

Yoshio Suzuki

Keiichi Betsui

Akemi Hirotsune

Hiroshi Fukuda

Masahiro Aoki

Koichi Watanabe

Naoki Mori

Masatoshi Kanamaru

Koji Yamasaki

Yoichi Tamaki

Yoshiro Konishi

Kenji Maio

Irizo Naniwa

Akio Fukushima

Chul Han Park

Masahiko Takahashi

Yoshinori Ishikawa

Kyoko Kojima

Chiyo Ohno

Shinichi Nakatsuka

Masayuki Fukui

Hisao Fujita

Takeru Utsugi

Youji Maruyama

Hiromi Kudo

Jiro Hashizume

Takeshi Doi

No-Cheol Park

Atsushi Kikukawa

Jeonghoon Yoo

Hideaki Koyanagi

Dong-Ju Lee

Kazuhiro Soga

Jeseung Oh

Hiroyuki Kajikawa

Hitoshi Ishii

Yoshiaki Ogino

An imaging optical system includes an optical component having a plurality of annular grooves formed to provide a phase to optical ray propagating an effective pupil, the phase causing the longitudinal aberration of the optical ray to alternate plural times to zigzag, and therefore, a focal-depth extended image being clear and having a large focal depth in a uniform image quality is achieved in a wide defocus range in front and back of a focal point.

Imaging optical system, imaging apparatus and focal-depth extension optical system

The cost and power consumption of an imaging apparatus are reduced by facilitating detection of an incident angle of a light beam transmitted through a grating substrate. An image sensor converts an optical image captured by pixels arranged on an imaging surface and outputs the converted image signal. A modulator is configured to modulate intensity of light; and an image processing circuit performs image processing of the output image signal. The modulator has a grating substrate, a grating pattern formed on a back surface side of the grating substrate arranged in proximity to the light receiving surface of the image sensor; and a grating pattern formed on a front surface facing the back surface. Each of the grating patterns is constituted of a plurality of concentric circles. The modulator performs intensity modulation on the light transmitted through the grating pattern and outputs the modulated light to the image sensor.

Imaging apparatus with cylindrical lenses

Portable information terminal with image processing generating subject image from moire fringe image

To reduce size and cost of a stereo camera and an onboard lighting unit. A stereo camera includes a first convex hyperboloidal mirror and a second convex hyperboloidal mirror that share a central axis and are vertically disposed with vertexes facing each other, an imaging optical system, and an image sensor. The second convex hyperboloidal mirror is formed of an outer circumferential hyperboloidal mirror and an inner circumferential hyperboloidal mirror that share the central axis with different conic constants, and an absolute value of the conic constant of the inner circumferential hyperboloidal mirror is greater than an absolute value of the conic constant of the outer circumferential hyperboloidal mirror.

Stereo camera, onboard lighting unit, and stereo camera system

A phase filteris configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.

Phase filter, imaging optical system, and imaging system

Imaging apparatus generating subject image from moire fringe image obtained by concentric pattern and method thereof

An image sensor has a plurality of pixels arranged in an array on an imaging surface and converts a captured optical image into an image signal. A modulator is provided on a light receiving surface of the image sensor and modulates the light intensity using a grating pattern. An image processor performs image processing of the image signal output from the image sensor. The modulator has a grating substrate and a first grating pattern is formed on a first side of the grating substrate adjacent to a light receiving side of the image sensor. The grating pattern is composed of a plurality of concentric circle patterns. Each concentric circle pattern has concentric circles having a pitch which becomes smaller in inverse proportion to the distance from the center thereof. The plurality of concentric circle patterns do not overlap with each other in the grating pattern.

Imaging device modulating intensity of light with grating pattern

An imaging device includes: a modulator configured to modulate the intensity of light, based on a real pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate a complex sensor image including a complex number, from an image obtained by executing predetermined positioning for the sensor image taken through the real pattern; and an image processing unit configured to restore an image, based on an operation with the complex sensor image and data of a pattern for reconstruction.

Imaging device, imaging module, and imaging method

The diffraction lens has an incident side and an exit side that are both convexly shaped, includes an exit diffraction plane that has an absolute value for the order of diffraction of 5 or greater and is disposed on the exit side, and is shaped such that the absolute value of a curvature at the surface apex of an envelope surface of the exit diffraction plane is smaller than the absolute value of a curvature at the surface apex of an incident surface, or the absolute value of the amount of sag in the direction of the optical axis at an outer periphery of the envelope surface of the exit diffraction plane is smaller than the maximum absolute value of the amount of sag in the direction of the optical axis at an outer periphery of the incident surface.

Diffraction lens and vehicular lamp using same

To obtain an imaging device capable of achieving high functionality of the imaging device by facilitating detection of an incident angle of light transmitted through a grating substrate. There is provided an imaging device which includes an image sensor that converts an optical image captured by a plurality of pixels arranged in an array on an imaging surface into an image signal and outputs the image signal, a modulator that is provided on a light receiving surface of the image sensor and modulates light intensity, an image storing unit that temporarily stores the image signal output from the image sensor, and a signal processing unit that performs image processing of the image signal output from the image storing unit, and in which the modulator has a first grating pattern composed of a plurality of concentric circles, and the signal processing unit modulates the image signal output from the image storing unit with a virtual second grating pattern composed of a plurality of concentric circles so as to generate a moir&#xe9; fringe image and changes a size of the concentric circle of the second grating pattern according to a focus position.

Imaging device

This imaging device comprises: an image sensor which converts an optical image, captured by pixels arranged in an array on an imaging surface, into an image signal and outputs the image signal; a modulation unit which is provided to a light-receiving surface of the image sensor and modulates the intensity of light; and an image processing unit which carries out image processing on an output image output by the image sensor. The modulation unit has a grating substrate and a first grating pattern formed on a first surface of the grating substrate facing a surface of the image sensor near the light-receiving surface. The grating pattern is configured from a plurality of concentric circles having pitches which are inversely proportional to the distance from the origin point of at least one reference coordinate, the concentric circles do not overlap with each other within the grating pattern.

Provided is an optical component including multiple annular zones that each provides a predetermined phase to a light flux passing through an optical system, where for each of the annular zones, the surface closer to the inner circumference of the optical component is substantially equal in area to the surface closer to the outer circumference thereof, and in a cross section in the radial direction of the optical component, the tangent at an outer circumferential end of each annular zone is substantially equal in inclination to the tangent at an inner circumferential end thereof.

Optical component and imaging system using the same

An imaging device includes: a modulator with a first pattern, which is configured to modulate light intensity; an image sensor configured to convert light passing through the modulator to image data, and output the image data; and an image processing unit configured to restore an image on the basis of cross-correlation operation with the image data and pattern data that represents a second pattern.

Imaging device and imaging method

An imaging device includes: an image sensor that outputs, as an image signal, light received at a light-receiving surface; a phase modulation element provided in close to the light-receiving surface, which has a grating pattern composed of multiple zones arranged in a concentric form to modulate the phase of light passing through the grating pattern toward the surface; and an image processing unit that executes image processing for the image signal output from the sensor. The spacing between the phase modulation element and the image sensor is set so that the duty ratio of the full width at half maximum for a bright section to the width for one period of a projection image of the concentric grating pattern is 0.5 or less in the case of light incidence from a point light source disposed at a distance of a subject in the axial direction of a concentric circle of the grating pattern.

Growing community of inventors

Yokohama, Japan

Takeshi Shimano