Takasago International Corporation

Stanley Electric Co., Ltd

Canon Kabushiki Kaisha

Other

Ricoh Company, Ltd.

Takao Saito

Hidenori Kumobayashi

Kazuhiko Matsumura

Noboru Sayo

Tohru Yokozawa

Shunichi Murahashi

Takashi Miura

Hideo Shimizu

Hidemasa Takaya

Takahiro Matsumoto

Ryoji Noyori

Susumu Akutagawa

Yasuyuki Kawakami

Xiaoyong Zhang

Takero Ishizaki

Izuru Nagasaki

Takashi Sato

Koji Saito

Yasushi Kato

Akira Suzuki

Toshiyuki Murayama

Tomohiro Kawamoto

Takaji Matsumoto

Yoshiki Okeda

Howard Alper

Takahiko Nozaki

Tetsuo Tomita

Kyoko Tamao

Kei Emoto

Akifumi Yoshida

Ryohei Ikeno

Kenji Yagi

Xiaoyaong Zhang

Noburo Sayo

Satoshi Mano

Nozomu Sakai

Hiroyuki Nagashima

Hidonori Kumobayashi

An image capture device includes an image capture circuit, a control unit, a determination unit, and a filter control unit. The image capture circuit is configured to capture an image formed by an image capture optical system. The control unit is configured to control exposure by determining an exposure time of each of pixel groups including one or more pixels on an image capture surface of the image capture circuit. The determination unit is configured to, on a basis of the exposure time, determine whether an image capture mode is to be a first mode in which a filter configured to attenuate infrared rays is inserted in an optical path of the image capture optical system or a second mode in which the filter is removed from the optical path. The filter control unit is configured to control insertion and removal of the filter.

Image capture device having control to insert or remove filter, control method, and storage medium

An image capturing apparatus comprising, an image sensor capable of performing exposure control for each of a plurality of partial regions obtained by dividing an image capturing region, and a control unit configured to perform exposure control of the image sensor, wherein the control unit sets a control value of exposure control for each partial region based on a size of the partial region to decrease a response speed of exposure control for a larger partial region, and performs exposure control of the image sensor based on the set control value.

Image capturing apparatus, method of controlling image capturing apparatus, system, and non-transitory computer-readable storage medium

An apparatus includes an imaging unit configured to capture an image with an exposure time determined for each pixel or for each area including a plurality of pixels, a detection unit configured to detect a moving object area from the captured image, a calculation unit configured to calculate a luminance of each of a plurality of the pixels or the areas that is included in the detected moving object area, and a determination unit configured to determine, for each of the plurality of pixels or areas included in the moving object area, a different exposure time in a predetermined range based on the calculated luminance.

Apparatus, control method, and storage medium

In an MEMS projector (), an image signal processing unit () outputs an inspection signal, and an inspection signal processing unit () outputs a light emission instruction signal. An inspection light source drive unit () outputs a light emission signal, and an inspection light source () radiates an inspection light. The inspection light radiated from the inspection light source () is reflected at the reflection position RP of a first support portion (), and then received by a light receiver (). Then, the light receiver () outputs a received light signal. Based on the received light signal, the inspection signal processing unit () detects the angle of the light deflecting mirror () around the X axial line.

Irradiation apparatus with angle detection unit

A control apparatus includes a processor configured to function as an angle control unit configured to control a tilt angle formed by a plane orthogonal to an optical axis of an imaging optical system and an imaging plane of an image sensor, and an aperture control unit configured to control a F-number based on the tilt angle and an output signal of a vibration detection unit configured to detect a vibration.

Control apparatus, imaging apparatus, and storage medium

A video projection apparatus includes: an optical deflector having a mirror projecting a first view field and projecting a second view field, an actuator for rocking the mirror and a sensor; an optical guide unit provided within the second view field; a photodetector; and a control unit. The control unit is adapted to calculate a resonant frequency of the sinusoidal-wave voltage; detect a first timing point from a sense voltage; detect a second timing point from a photo detection voltage when the second light beam is incident to the optical guide unit; calculate a time period from the first timing point to the second timing point; calculate a product value between the time period and the resonant frequency; and control an amplitude of the sinusoidal-wave voltage.

Video projection apparatus capable of realizing stable rocking angle at optimum resonant frequency

A system can include: a dividing unit which divides a light scanning within a rotation angle range into a right scan light of a first angle portion and a left scan light of a second angle portion; a right-side scan light generation unit which reflects the right scan light toward a right-side region portion of an irradiation region; and a left-side scan light generation unit which reflects the left scan light toward a left-side region portion of the irradiation region. Both end fields of the region are irradiated by the light from the middle part of the rotation angle range. A center field of the region is irradiated by the light from the end parts of the rotation angle range.

Headlight having a division scan optical system

A video projection apparatus includes: a light source; an optical deflector having a mirror for reflecting light to project a view field, an actuator for rocking the mirror with an axis of the mirror and a sensor provided in the vicinity of the actuator; and a control unit. The control unit generates a sine-wave voltage applied to the actuator and a cosine-wave voltage; calculates a first convolution between the sine-wave voltage and a sense voltage from the sensor; calculates a second convolution between the cosine-wave voltage and the sense voltage; converts an orthogonal coordinate formed by the first convolution and the second convolution into a polar coordinate formed by a radius component and an angle component; and sweeps the frequency of the first and second voltages so that the frequency is defined as a resonant frequency when the radius component is maximum.

Video projection apparatus capable of operating at optimum resonant frequency and its controlling method

A video projection system includes: at least first and second local video projection units, and a video signal distributing unit adapted to distribute first and second luminance signals to the first and second local video projection units, respectively. The first local video projection unit projects a first view field along with a first maximum luminance of a first luminance distribution, and the second local video projection unit projects a second view field larger than the first view field along with a second maximum luminance of a second luminance distribution smaller than the first maximum luminance. A luminance resolution of the first luminance distribution is equal to a luminance resolution of the second luminance distribution.

Video projection system including multiple local video projection units

A light source device comprising a filament showing high electric power-to-visible light conversion efficiency is provided. A light source device comprising a translucent gastight container, a filament disposed in the translucent gastight container, and a lead wire for supplying an electric current to the filament is provided. The filament comprises a substrate formed from a metal material and a visible light reflectance-reducing film coating the substrate for reducing visible light reflectance of the substrate. The reflectance of the substrate for visible lights is thereby made low, and the reflectance of the substrate for infrared lights is thereby made high. Therefore, radiation of infrared lights is suppressed, and visible luminous efficiency can be enhanced.

Light source device and filament

A light source device comprising a filament showing high electric power-to-visible light conversion efficiency is provided. The light source device of the present invention comprises a translucent gastight container, a filament disposed in the translucent gastight container, and a lead wire for supplying an electric current to the filament. The filament comprises a substrate formed from a metal material and a visible light-absorbing film covering the substrate. The visible light-absorbing film is transparent to lights of infrared region. The reflectance of the substrate for visible lights is thereby made low, and the reflectance of the substrate for infrared lights is thereby made high. Therefore, radiation of infrared lights is suppressed, and visible luminous efficiency can be enhanced.

A semiconductor light-emitting device including a favorable radiating structure can include a semiconductor light source sealed between a metallic cap having a light-emitting window and a metallic base attached on a heat sink plate. The semiconductor light-emitting device can also include a holder attaching the metallic base along the metallic cap between the holder and the heat sink plate to efficiently radiate heat generated from the light source, and a thermal interface material layer disposed between at least a top surface of the heat sink plate and an outer bottom surface of the holder so as to be able to enlarge each tolerance of parts composing the light-emitting device. Thus, the disclosed subject matter can provide semiconductor light-emitting devices including the favorable radiating structure, which can be employed for various lighting apparatuses including a headlight in a relatively small size by selecting the semiconductor light source incorporated in the devices.

Semiconductor light-emitting device

A lighting unit can form a plurality of light distribution patterns without use of a shield and without an act of shielding light from a light source. The lighting unit can include a laser diode, a fluorescent member with a fluorescent portion configured to receive blue light from the laser diode and emit white light, and a projector type lens configured to project the white light. The fluorescent member can be rotated around a rotation shaft perpendicular to the optical axis of the projector type lens and shaped such that when the fluorescent member is rotated by a predetermined angle by the driving member and viewed from the projector type lens, a plurality of contours of the fluorescent portion can be changed according to the predetermined angle.

Lighting unit

Disclosed is a producing method of an optically active &#x3b2;-amino acid useful as intermediate for the production of medicines, agricultural. chemicals and physiologically active substances, by means of a catalytic and asymmetric synthesis method of high performance and a high enantiomeric excess, without requiring additional procedures such as introduction and removal of protecting group and so on. The method includes subjecting an enamine to an asymmetric hydrogenation.

Method for producing an optically active &#x3b2;-amino acid

The present invention relates to a process for producing amino acid derivatives such as optically active &#x3b2;-amino acid in short steps with good yield and high optical purity, which comprises reacting a keto acid of the formula (1): wherein Ris hydrogen, an optionally substituted hydrocarbon, etc.; Ris a spacer; and Ris an optionally substituted alkoxy, etc., or a salt thereof, with ammonia or an amine or a salt thereof in the presence of a chiral catalyst and in the presence or absence of an acid and/or a fluorine-containing alcohol, to give an amino acid derivative of the formula (2): wherein Q is a group formed by removing one hydrogen atom from ammonia or an amine; X' is an acid and/or a fluorine-containing alcohol; and b is 0 or 1.

Growing community of inventors

Hiratsuka, Japan

Takao Saito