Hitachi, Ltd.

Hitachi Koki Co., Ltd.

Other

Pentax Corporation

Hoya Corporation

Hitachi Process Computer Engineering, Inc.

Hitachi Kiki Co., Ltd.

Hitachi Maxell, Limited

Akira Arimoto

Susumu Saito

Takeshi Mochizuki

Shigeru Nakamura

Takeshi Shimano

Hideo Sato

Shinichi Komura

Tetsuya Nagata

Shinya Kobayashi

Yoshiharu Nagae

Kimio Tatsuno

Yuji Mori

Minoru Hoshino

Akio Hayasaka

Yoshiyuki Kaneko

Keiji Kataoka

Takeshi Nakao

Seiji Maruo

Masayuki Inoue

Tetsuya Ooshima

Shigeo Moriyama

Kunikazu Ohnishi

Hiroki Kaneko

Shinichi Nakatsuka

Minoru Seino

Masahiro Fushimi

Koichi Maruyama

Ikuo Hiyama

Hisataka Sugiyama

Kazuo Shigematsu

Yoshito Tsunoda

Teruaki Mitsuya

Tatsuya Sugita

Masahiro Ojima

Mitsunori Iima

Tadashi Minakuchi

Kenkichi Suzuki

Yasuyuki Tsuji

Shinji Tsukamoto

Akira Hashimoto

Mariko Umeda

Yoshimi Obara

Eiichi Ito

Tetsuya Ohshima

Katsuhiko Shibata

Osamu Namikawa

Hiroyuki Minemura

Takeshi Maeda

Motoyasu Terao

Katsumi Kondo

Hiroshi Kikuchi

Masahiko Yatsu

Koichi Sato

Kenji Morita

Toshiaki Tanaka

Tohru Sasaki

Hirofumi Sukeda

Yoshio Suzuki

Kenchi Ito

Yumiko Anzai

Kazutaka Tsuji

Naoki Chinone

Masaru Eguchi

Fumiyoshi Kirino

Yasuo Hira

Masataka Shiba

Hiroyoshi Matsumura

Kensuke Ogawa

Shinichi Arai

Shinji Tsuji

Kazumi Kawamoto

Nobuyoshi Hoshi

Yukio Fukui

Yoshinori Miyamura

Hirohisa Sano

Koji Takahashi

Yasuo Takuma

Makoto Nakura

Mamoru Okano

Hiroaki Inoue

Masahiko Takahashi

Fumio Kugiya

Hidemi Sato

Junshin Sakamoto

Osamu Itoh

Shigenobu Katagiri

Yasuo Kikuchi

Fumihiko Uchida

Kunio Sato

Kenichi Kugai

Masuo Kasai

Takashi Nishimura

Yoshihito Maeda

Shinichi Nishino

Atsushi Onose

Tatsuhisa Fujii

Akira Terakado

Sadao Takahashi

Masahide Tokuda

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.

Solid-state image pickup device and method of producing the same

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.

Focusing controlling device

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.

Digital single-lens reflex camera

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.

Optical head with lasers and mirrors in a recess formed in a substrate

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.

Optical fiber and method for producing the same

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.

Optical communication apparatus

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.

Optical communication device

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.

LCD and projection type display using same

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.

Optical lens for optical disc drive with aberration suppression for recording/reproducing for a plurality of optical disc types

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.

Full-color recorder using potential split developing process

It is an object of the present invention to implement a display providing high optical efficiency irrespective of the size of a light valve, and capable of enhancing the uniformity of the luminance of an image to be projected. In order to attain the foregoing object, for example, as shown in FIG. , a light valve of a projector is located roughly at the focus point of an illumination lens . Further, as shown in FIG. , a light source is also located roughly at the focus point of the illumination lens . Consequently, it is possible to implement a miniaturized projector.

Picture display device

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 semi-conductor 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.

Liquid crystal light valve and projection type display using same

An electric photograph system for improving non-linearities of an exposing light intensity and an operating current at a low exposing level when performing analog printing operation. A range (saturable absorber) having a saturable absorbing characteristic is provided in a part of an optical path including a semiconductor laser as light source to improve the non-linearity of the operating current when the light intensity is weak. The saturable absorber may be made in the form of a non current injected area provided in a part of the semiconductor laser as the light source or a thin film layer provided partly in films coated on a facet of the semiconductor laser. Due to the provision of the saturable absorber, the light output power characteristic can exhibit its linearity in its low optical power range, the size of a printing dot can be arithmetically changed, and thus fine laser printing can be realized.

Electric photograph system

An image projector, having a light source, an LCD panel into which a light emitted from the light source enters, and a projection lens into which the light emitted from the LCD panel enters. There exists, in an entrance pupil of the projection lens, a range in which light emitted from respective pixels of the LCD panel overlap with each other at least in a horizontal direction. The image projector forms part of an image display.

Projector and display system

Growing community of inventors

Kodaira, Japan

Akira Arimoto