Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Mitsubishi Denki Kabushiki Kaisha

Kobelco Construction Machinery Co., Ltd.

Yasuhiro Tanaka

Michihiro Yamagata

Katsuhiko Hayashi

Tomohiko Sasano

Yoshiaki Komma

Kazuhiro Yamada

Motonobu Yoshikawa

Yoshiharu Yamamoto

Kazutake Boku

Hiroshi Yamaguchi

Hiroshi Mizuno

Fumitomo Yamasaki

Hiroaki Okayama

Kazuhiro Minami

Shinichi Kumashiro

Sadao Mizuno

Hiroyuki Asakura

Shusuke Ono

Masahiro Kasano

Daisuke Ogata

Toshiyuki Moriwaki

Youichirou Mae

Kazuhiko Ishimaru

Masahiro Birukawa

Takayuki Hayashi

Yoshimasa Fushimi

Kenichi Hayashi

Yasuo Nakajima

Jun Murata

Shigeki Murata

Kouki Ichihashi

Shinichi Tanaka

Yoshiyuki Shimizu

Hidenori Wada

Kenji Inoue

Toshiya Fujii

Kenji Hasegawa

Akihiro Arai

Kenji Nagashima

Tetsuo Saimi

Naohide Wakita

Katsu Yamada

Kyoichi Miyazaki

Hideki Hayashi

Yoshitomi Nagaoka

Daizaburo Matsuki

Makoto Umetani

Akihiro Yasuda

Masaru Fujita

Masaaki Sunohara

Sumio Terakawa

Kazuyoshi Itoh

Hisanori Sugiura

Takamasa Tamura

Yoshikazu Sano

Tomoko Komatsu

Takafumi Hamano

Yasuyuki Ozeki

Yasuo Nishihara

Syouji Tanaka

Michiyo Ichikawa

Yoshiyuki Hisatomi

Ryohei Miyagawa

Osamu Doi

Toshihiko Shibita

Yoichi Saito

Hiromitu Aoki

A tag reader acquires identification data and data of a reception intensity indicative of an intensity of a reception signal from a weight tag mounted on each weight, and a data processing device acquires the identification data and the data of a reception intensity of each weight tag from the tag reader, discriminates the identification data corresponding to each weight tag into attached weight data indicating that a reception intensity corresponding to the identification data exceeds a reference intensity set in advance and other non-attached weight data, and determines an attachment state of the weight to the main body portion based on the attached weight data.

Crane and method for determining weight state in crane

A projector system including a projector unit and a control device. The projector unit includes: a projector; a change mechanism that changes a projection direction; a plurality of optical systems having different optical properties; and a switch mechanism that selects one of the optical systems. The control device includes: a change unit that controls the change mechanism; and a switch unit that causes the switch mechanism to place one of the optical systems to be used for the projector in conjunction with the changing of the projection direction of the projector which is caused by the change unit.

Projector system

An image display apparatus according to the present disclosure includes: an image display panel; a backlight device; a first optical element located between the image display panel and the backlight device and configured to deflect a light incident thereon; a second optical element located between the first optical element and the image display panel and configured to change a deflection angle of emitted light according to a voltage applied thereto; a plurality of first lenses located between the first optical element and the backlight device; a plurality of second lenses located between the second optical element and the image display panel; a position detection section configured to detect a viewing position of a viewer; and a control section configured to control the voltage applied to the second optical element, according to the detected viewing position. The first lenses and the second lenses constitute an afocal optical system.

Image display apparatus

A display device having a display surface includes a plurality of black lines defining a plurality of pixels; and a plurality of information patterns arranged so as to overlap the display surface and each representing information regarding a position thereof on the display surface. Each information pattern is formed by using a plurality of marks provided so as to overlap the pixels, and each mark is formed from a material that transmits visible light and absorbs or diffusedly reflects infrared light. A length of each mark in a width direction of the thickest black lines among the black lines defining the pixel overlapped by the mark is larger than a width of each thickest black line.

Display device and display control system

The display control system performs display control according to a position indicated by a pointer on a display panel. The display panel includes pixel regions defined by a black matrix, and a positional information pattern showing a plan position is formed in the display panel. The pointer includes a reader configured to capture an image which is at the indicated position and includes the positional information pattern. The optical system of the reader is formed to have a low resolution so that the black matrix of the display panel is removed.

Display control system, pointer, and display panel

A light deflection element is capable of deflecting incident light so as to follow a position of an observer and suppressing reduction in intensity of light that reaches eyes of the observer regardless of their position. The light deflection element includes: a first optical element configured to deflect incident light; a second optical element configured to change a deflection direction of emitted light by changing a refractive index thereof according to a voltage applied thereto; a third optical element; and a control section configured to control the voltage applied to the second optical element. At least one of interfaces between the first and second optical elements and the second and third optical elements is an aspheric surface. The aspheric surface has an optical power that compensates enlargement of the emitted light which is caused by refractive index distribution caused when a voltage is applied to the second optical element.

Light deflection element and image display apparatus using the same

An objective lens element having excellent compatibility with optical discs having different base material thicknesses is provided. The objective lens element has optically functional surfaces on an incident side and an exit side. At least either one of the optically functional surfaces on the incident side and the exit side includes a diffraction portion which satisfies at least either one of the following formulas (1) and (2):&#x3b8;&#xd7;&#x3b8;&#x3c;0 ('&#xd7;' represents multiplication)&#x2003;&#x2003;(1),(sin &#x3b8;)/&#x3bb;=&#x2212;(sin &#x3b8;)/&#x3bb;&#x2003;&#x2003;(2),where

Objective lens element

An image display apparatus according to the present disclosure includes: a display panel having at least, first pixels that display a first parallax image and second pixels that display a second parallax image; and an image conversion element. The image conversion element includes: a plurality of first electrodes arranged at a predetermined pitch; a second electrode; and a liquid crystal layer. The image display apparatus according to the present disclosure simultaneously satisfies the following conditions, wherein f is a distance from the liquid crystal layer to the first pixels or the second pixels, r is a length equal to &#xbd; of an arrangement pitch of the first electrodes, &#x394;n is a birefringence of the liquid crystal molecules, P is an arrangement pitch of the first pixels and the second pixels, and d is a thickness of the liquid crystal layer: 

An image display apparatus makes the emission angle range of emitted light bilaterally symmetrical, at low cost, irrespective of the material refractive index of a prism composing a liquid crystal prism. The image display apparatus includes an image display panel , a backlight device located on a back surface side of the image display panel, a liquid crystal prism element located between the image display panel and the backlight device, an offset optical element located between the image display panel and the backlight device and configured to deflect light incident thereon, a position detection section configured to detect a viewing position of a viewer, and a control section configured to control a voltage applied to a liquid crystal prism element, in accordance with the viewing position detected by the position detection section.

An objective lens capable of converging light of a used wavelength with a satisfactory aberration on a recording medium is provided. An objective lens for converging light of a predetermined wavelength &#x3bb; on a recording medium satisfies the following condition: |CML|+|CMF|&#x3c;0.03 &#x3bb;, where CML is an amount of a generated third-order coma aberration per 1 degree of tilt of the objective lens, and CMF is an amount of a generated third-order coma aberration per 1 degree of tilt of off-axis light.

Objective lens and optical pickup device

An objective lens capable of converging light of a used wavelength with a satisfactory aberration on a recording medium is provided. An objective lens for converging light of a predetermined wavelength &#x3bb; on a recording medium satisfies the following condition: |CML|+|CMF|&#x3c;0.03&#x3bb;, where CML is an amount of a generated third-order coma aberration per 1 degree of tilt of the objective lens, and CMF is an amount of a generated third-order coma aberration per 1 degree of tilt of off-axis light.

A solid-state image pickup device capable of taking more light into light receiving regions is provided. The solid-state image pickup device of the present invention includes: a photoelectric conversion unit having a plurality of light receiving regions that are two-dimensionally arrayed, the photoelectric conversion unit for photoelectrically converting light incident on each of the light receiving regions, and outputting an electric signal according to the intensity of the incident light; a lens unit comprising a plurality of converging lenses provided on an upper layer of the photoelectric conversion unit, each of the converging lens being provided corresponding to a set of continuous first to third light receiving regions; and a dispersing element provided between the photoelectric conversion unit and the lens unit, the dispersing element being formed of a medium whose refractive index varies periodically, and diffracting beams of a first wavelength band and of a third wavelength band, having been transmitted through the converging lens, and directing the beams onto the first light receiving region and the third light receiving region, and transmitting, without diffracting, a beam of a second wavelength band, having been transmitted through the converging lens, and directing the beam onto the second light receiving region.

Solid-state image pickup device, imaging device, and dispersing element

An objective lens element that can suppress occurrence of an aberration is disclosed. Sawtooth-like diffraction structures having different height and cycles (pitches) are provided on an inner part Rand an outer part R, respectively. A curved surface Mextending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the inner part R, and a curved surface Mextending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the outer part Rare smoothly connected to each other. Even when wavelength of the light source and/or the environmental temperature change, a phase shift does not occur between the inner part Rand the outer part R, and a decrease in diffraction efficiency and occurrence of an aberration can be suppressed.

Objective lens element and optical pickup device

An objective lens element which has excellent compatibility with optical discs having different base material thicknesses is provided. An objective lens elementhas optically functional surfaces on an incident side and an exit side. Either one of the optically functional surfaces is divided into an inner partB including a rotational symmetry axis and an outer partF which is a ring-shaped region surrounding the inner partB. On the inner partB, a plurality of discontinuous steps are provided. The plurality of steps change in height in the same direction from the optical axis toward the outer part, and each of the steps causes a constant optical path difference longer than the wavelength &#x3bb;to the first incident light beamand causes a constant optical path difference shorter than the wavelength &#x3bb;to the second incident light beam

An optical pickup device is provided which is compatible with at least two types of optical disc standards having different NAs and which controls an effective NA when a light beam for an optical disc standard having a relatively small NA is converged, thereby forming a desired spot. An inner partB and an outer partF of an objective lens elementare provided with diffraction structures different from each other. A condition (1), DO&#xd7;DO&#x3e;0, and a condition (2), DO&#xd7;DO&#x3c;0, are satisfied (DO(DO) is the diffraction order of the diffracted light beam having the highest diffraction efficiency among light beams of the wavelength &#x3bb;(&#x3bb;) diffracted by the diffraction structure on the inner part; and DO(DO) is the diffraction order of the diffracted light beam having the highest diffraction efficiency among light beams of the wavelength &#x3bb;(&#x3bb;) diffracted by the diffraction structure on the outer part).

Growing community of inventors

Hyogo, Japan

Yasuhiro Tanaka