Abstract: A solid-state image pickup device including a substrate having a first face and a second face which serves as an opposite face of the first face; a solid-state image pickup element having a plurality of electrodes and a light sensing part, an opposite face of the light sensing part being bonded to the first face via a bonding agent; a plurality of wires formed over the face, first ends of the wires serving as external electrode terminals; and a connection part for electrically connecting the electrodes to the wires, wherein an endless-shaped contraction frame formed of resin larger in thermal expansion coefficient than the substrate and image pickup element is bonded to and formed on surface of the substrate located outside the light sensing part so as to surround the light sensing part, and a light sensing face of the light sensing part is warped.

Abstract: A focusing controlling device is for a camera having a photographing lens and an imaging surface. The focusing controlling device includes a focus adjuster that adjusts a focus position of the photographing lens based on field curvature data. The field curvature data indicates a field curvature ratio which is a ratio of a distance between an image point of light transmitted through the photographing lens and the imaging surface to a focal distance of the photographing lens, the field curvature data being set for a partial area of the imaging surface as an average value of the field curvature ratios for the partial area.

Abstract: A digital single-lens reflex camera includes a lens unit, a storage medium and a camera body. The lens unit has a photographing lens and an identification data memory for storing identification data to identify the photographing lens. The storage medium stores lens data that indicates shading characteristics of the photographing lens. The lens unit and the storage medium are detachably attached to the camera body. The camera body has an imaging device, a lens data reader, and an image corrector. The imaging device receives light transmitted through the photographing lens to generate an image corresponding to a subject. The lens data reader reads the lens data based on the identification data. An image corrector corrects an error in the image of the subject caused by shading, based on the lens data read by the lens data reader and imaging device data that indicates shading characteristics of the imaging device.

Abstract: A digital single-lens reflex camera includes a lens unit and a camera body. The lens unit has a photographing lens and an identification data memory for storing identification data to identify the photographing lens. The camera body, to which the lens unit is detachably attached, has an imaging device which receives light transmitted through the photographing lens to generate an image corresponding to a subject, a lens data memory for storing lens data that indicates the shading characteristics of the photographing lens, a lens data reader that reads the lens data based on the identification data, and an image corrector that corrects an error in the image of the subject caused by shading, based on the lens data read by the lens data reader and imaging device data that indicates the shading characteristics of the imaging device.

Abstract: A solid-state image pickup device including a substrate having a first face and a second face which serves as an opposite face of the first face; a solid-state image pickup element having a plurality of electrodes and a light sensing part, an opposite face of the light sensing part being bonded to the first face via a bonding agent; a plurality of wires formed over the face, first ends of the wires serving as external electrode terminals; and a connection part for electrically connecting the electrodes to the wires, wherein an endless-shaped contraction frame formed of resin larger in thermal expansion coefficient than the substrate and image pickup element is bonded to and formed on surface of the substrate located outside the light sensing part so as to surround the light sensing part, and a light sensing face of the light sensing part is warped.

Abstract: An integrated optical head records and reproduces information to and from optical discs of different types, including CD and DVD, with use of a single information recording/reproducing apparatus. The optical head has a plurality of semiconductor lasers of different wavelengths integrated by index alignment onto a substrate formed with an optoelectric integrated circuit, photodetection patterns, and a reflecting mirror.

Abstract: An endoscope comprises an electric scope and a processor. The electric scope has a CMOS sensor and a video-signal emitting unit that outputs an image signal that is imaged by the CMOS sensor and that is converted to a light signal. The processor has a video-signal photo sensor unit that receives light regarding the image signal that is output from the video-signal emitting unit, and performs an image processing operation based on the light regarding the image signal.

Abstract: A digital single-lens reflex camera includes a lens unit and a camera body. The lens unit has a photographing lens and an identification data memory for storing identification data to identify the photographing lens. The camera body, to which the lens unit is detachably attached, has an imaging device which receives light transmitted through the photographing lens to generate an image corresponding to a subject, a lens data memory for storing lens data that indicates the shading characteristics of the photographing lens, a lens data reader that reads the lens data based on the identification data, and an image corrector that corrects an error in the image of the subject caused by shading, based on the lens data read by the lens data reader and imaging device data that indicates the shading characteristics of the imaging device.

Abstract: A focusing controlling device is for a camera having a photographing lens and an imaging surface. The focusing controlling device includes a focus adjuster that adjusts a focus position of the photographing lens based on field curvature data. The field curvature data indicates a field curvature ratio which is a ratio of a distance between an image point of light transmitted through the photographing lens and the imaging surface to a focal distance of the photographing lens, the field curvature data being set for a partial area of the imaging surface as an average value of the field curvature ratios for the partial area.

Abstract: An optical fiber includes an entrance face that is optically coupleable with a device for transmitting a light beam through the optical fiber. The entrance face includes a core region and a cladding region surrounding the core region. The cladding region is at least partially covered with a coating, which is made of metal, for example. That is, the coating is formed over a whole area of the cladding region or the coating is formed on an area of the cladding region defined in a vicinity of the core region. The coating has a mirror surface to increase the reflectivity thereof and enhances the reflectivity of the entrance face.

Abstract: There is provided an optical communication apparatus, which is provided with a light emitting device that emits a transmission light signal modulated with transmission data, an optical fiber, and a deflecting system that is located between the light emitting device and the optical fiber so as to move a position of the transmission light signal on an entrance surface of the optical fiber. The optical communication apparatus is further provided with a feedback control system that controls the deflecting system so as to move the position of the transmission light signal to a center of a core of the optical fiber based on intensity of a portion of the transmission light signal.

Abstract: An optical communication device includes a light source that emits a light beam and an optical fiber having a core and a cladding. The optical fiber has a light entrance face having a core region and a cladding region. The light beam emitted by the light source is converged by a converging lens on the core region and is transmitted through the optical fiber. The entrance face is configured to generate a light intensity distribution in light reflected by the light entrance face depending on a position where the light beam is incident on the entrance face, a converging lens arranged between the light source and the optical fiber.

Abstract: An optical communication device includes a light source that emits a light beam and an optical fiber having a core and a cladding. The optical fiber has a light entrance face having a core region and a cladding region. The light beam emitted by the light source is converged by a converging lens on the core region and is transmitted through the optical fiber. The entrance face is configured to generate a light intensity distribution in light reflected by the light entrance face depending on a position where the light beam is incident on the entrance face, a converging lens arranged between the light source and the optical fiber.

Abstract: An integrated optical head records and reproduces information to and from optical discs of different types, including CD and DVD, with use of a single information recording/reproducing apparatus. The optical head has a plurality of semiconductor lasers of different wavelengths integrated by index alignment onto a substrate formed with an optoelectric integrated circuit, photodetection patterns, and a reflecting mirror.

Abstract: A liquid crystal light valve includes a semiconductor substrate having a region for a plurality of switching elements formed in a matrix form. A first metal layer is formed on the surface of the semiconductor substrate through an insulating layer and divided into a plurality of parts by first slits. A second metal layer is formed on the first metal layer through another insulating layer and divided into a plurality of parts by second slits. A third metal layer is formed on the second metal layer through still another insulating layer and divided into a plurality of parts by third slits. An opposite substrate has an opposite electrode on a surface thereof, disposed so as to be opposite to said third metal layer through an interval on the opposite electrode side. Liquid crystal fills the interval between said opposite electrode and the third metal layer.

Abstract: An objective lens converges a shorter wavelength laser beam on a DVD having a protective layer, which is 0.6 mm thick, and a longer wavelength laser beam on a CD having a protective layer, which is 1.2 mm thick. A common region is defined on the objective lens. The common region provides a numerical aperture appropriate for converging the longer wavelength laser beam on the CD. Coma of the objective lens in the first region is compensated better in a case where the longer wavelength laser beam is converged on the CD than a case where the shorter wavelength laser beam is converged on the DVD.

Abstract: An optical fiber includes an entrance face that is optically coupleable with a device for transmitting a light beam through the optical fiber. The entrance face includes a core region and a cladding region surrounding the core region. The cladding region is at least partially covered with a coating, which is made of metal, for example. That is, the coating is formed over a whole area of the cladding region or the coating is formed on an area of the cladding region defined in a vicinity of the core region. The coating has a mirror surface to increase the reflectivity thereof and enhances the reflectivity of the entrance face.

Abstract: In order to provide a miniature full-color recorder having an excellent color reproducibility and to provide a full-color recorder having a wider color reproduction range beyond the range of subtraction color mixing of three primary colors, first and second potential split developing processes are continuously arranged for one recording medium.

Abstract: An optical communication device includes a light source that emits a light beam for transmitting data, and an optical fiber that has an entrance face through which the light beam emitted from the light source enters the optical fiber. The entrance face has a core region and a cladding region. A beam spot moving mechanism moves a beam spot formed by the light beam emitted from the light source on the entrance face of the optical fiber in first and second directions. A light detector having a light receiving surface detects light amount of the light beam reflected by the entrance face of the optical fiber. The light receiving surface is divided in multiple light detecting areas. A controller controls the beam spot moving mechanism to adjust light amounts detected by the light detecting areas to a predetermined ratio. For example, the controller controls the beam spot moving mechanism so that the light amounts detected by the light detecting areas become the same.

Abstract: A liquid crystal light valve includes a semiconductor substrate having a region for a plurality of switching elements formed in a matrix form. A first metal layer is formed on the surface of the semiconductor substrate through an insulating layer and divided into a plurality of parts by first slits. A second metal layer is formed on the first metal layer through another insulating layer and divided into a plurality of parts by second slits. A third metal layer is formed on the second metal layer through still another insulating layer and divided into a plurality of parts by third slits. An opposite substrate has an opposite electrode on a surface thereof, disposed so as to be opposite to said third metal layer through an interval on the opposite electrode side. Liquid crystal fills the interval between said opposite electrode and the third metal layer.