Ricoh Company, Ltd.

Tohoku University

Toshiyuki Kawasaki

Ryosuke Kasahara

Yukiko Hamano

Migaku Takahashi

Itaru Fujimura

Shin Saito

Shigeyoshi Misawa

Koji Mori

Masakiyo Tsunoda

Tsuyoshi Suzudo

Shigeru Oohchida

Tomoyuki Ogawa

Yasushi Takahashi

Hideaki Hirai

Mitsuru Nakajima

Kenichi Yoshimura

Issei Abe

Tetsuya Ogata

Shinobu Kanatani

Masahiro Fujimoto

Tomoko Ishigaki

Hayato Yoshida

Naoki Moniwa

Ippei Matsumoto

An image processing apparatus for performing image processing for image data. The image processing apparatus includes a signal separation unit configured to separate a color signal and a luminance signal included in the image data, and a color signal control unit configured to control chroma of the color signal used for the image processing based on a luminance value of the luminance signal.

Image processing apparatus, imaging apparatus, image processing program, and image processing method

An imaging apparatus includes: a lens barrel which holds at least one optical element; an image sensor which converts an image of a photographic subject obtained by the optical element into an electrical signal; a circuit board on which the image sensor is mounted; and a fixing wall body which is a different body from the lens barrel, and where the lens barrel is mounted to an end part of the fixing wall body on a photographic subject side, and the circuit board is mounted to an end part of the fixing wall body on a side opposite to the photographic subject side by a bond structure by an adhesive agent.

Imaging apparatus including a lens barrel holding an optical element

A projector projecting an image on an object by scanning the object with a light beam includes a light source; a divergence angle converter converting the divergence angle of the light beam; a light deflector deflecting the light beam in a light beam scanning direction and a direction perpendicular to the light beam scanning direction; alight deflector drive controller controlling the light deflector to form the focused light spots at the respective pixel positions of the object on the basis of positional data for the pixels; a light amount controller controlling light amount of the light beam on the basis of luminance data for the pixels; and an image processor correcting the luminance data on the basis of previously obtained deterioration data of the projected image and outputting the corrected luminance data to the light amount controller while outputting the positional data to the light deflector drive controller.

Projector, image projection method, and head-up display device using the projector

A distortion of image data is corrected by performing a coordinate transformation of the image data by using where X and Y represent coordinates of a transformation source which is the image data after the correction of the distortion, x and y represent coordinates of a transformation destination which is the image data having the distortion, xand yare offset values in x direction and y direction, respectively, and f and g are correction functions.

Image processing method, image processing apparatus, and imaging apparatus

An image pickup device includes an optical system; an image sensor; an AGC circuit; an image processing unit configured to perform at least an MTF correction process; and a control unit configured to control the image processing unit so as not to perform the MTF correction process in the event that the control unit determines that illuminance is low based on information which directly or indirectly indicates the illuminance.

Image pick up device

An information recording apparatus has a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles. Summary information may be recorded for plural information recording parts.

Information recording apparatus and method, information reproducing method and fade-in memory, with summary information corresponding to plurality of information recording elements

A photoelectric conversion element includes a plurality of light receiving portions. A color filter is provided on a light receiving surface of the photoelectric conversion element with filters for red, green, and blue arranged corresponding to the light receiving portions, such that R, G, and B pixels including the light receiving portions and the filters are arranged in a two-dimensional array. A transfer unit transfers a light in a wavelength range other than lights of green and blue incident on the G pixel and a light in a wavelength range other than lights of blue and green incident on the B pixel to a neighboring R pixel.

Imaging device and imaging apparatus

An image projecting apparatus enables the formation of a projected image faithful to original image information by reducing degradation in the projected image due to decrease in imaging performance of a projection optical system. Image information is processed by an image processing device, which includes a first and a second image processor. A light modulating device modulates a flux of light emitted by an illumination optical system based on the processed image information. The modulated flux of light is projected on a screen by a projection optical system. If the image information processed by the first image processor in a pixel region is not within a representable modulation range of the light modulating device, the image information is processed by the second image processor.

Image projecting apparatus and image projecting method

An information recording apparatus comprises a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles.

Information recording method and apparatus using plasmonic transmission along line of ferromagnetic nano-particles with reproducing method using fade-in memory

A wide-angle lens is disclosed that includes a front lens group and a rear lens group that are arranged in order from an object side to an image side with an aperture being arranged between the front lens group and the rear lens group. The front lens group includes at least two lenses arranged toward the object side that have negative powers, and at least one lens arranged toward the image side that has a positive power. The rear lens group includes at least one lens having a positive power. One of the lenses of the front lens group arranged second in order from the object side has a lens face that is arranged into an aspheric surface. The front lens group, the aperture, and the rear lens group make up an image forming system having an angle of view greater than 180 degrees.

Wide-angle lens and image capturing apparatus

An optical recording medium tilt compensation device having a tilt compensation unit is disclosed that is able to compensate for a tilt error in servo control when recording or reproducing data in an optical recording medium. The optical recording medium tilt compensation device includes an object lens that condenses light from a light source on a recording surface of an optical recording medium; an object lens tilt actuator that controls a tilt of the object lens; an object lens tilt sensor that detects a tilt of the object lens; an optical recording medium tilt sensor that detects a tilt of the optical recording medium; a control unit that controls the tilt of the object lens in accordance with a tilt value from the optical recording medium tilt sensor so that an aberration of the spot condensed on the recording surface is minimum by driving the object lens tilt actuator; a gain variable unit that changes the magnitude of an output signal from the object lens tilt sensor or the optical recording medium tilt sensor.

Optical recording medium tilt compensation device, tilt compensation method, and optical information recording apparatus

A diffraction grating with periodically arranged protrusions and grooves at a relatively narrow pitch and improved diffraction efficiency is disclosed. The protrusions of the grating are made of a material whose index of refraction is greater than that of the grooves, and the ratio of the width D of the protrusion to the pitch &#x39b; of the protrusion is set equal to or less than 0.4 (D/&#x39b;&#x2266;0.4).

Growing community of inventors

Kanagawa, Japan

Toshiyuki Kawasaki