Hamamatsu Photonics Kabushiki Kaisha

Hamamatsu-photonics K.k.

Shiseido Company, Limited

Japan Aerospace Exploration Agency

Nagoya Institute of Technology

Asahi Kasei Emd Corporation

Yoshihiro Takiguchi

Makoto Kato

Kensaku Itoh

Yutaka Tsuchiya

Katsuyuki Kinoshita

Tsuneyuki Urakami

Junpei Yamanaka

Hiroshi Fukui

Katsushi Watanabe

Sadaki Takata

Shigeo Hara

Yoshimasa Miura

Masato Hatao

Masayuki Shirao

Katsuhiro Yamamoto

Masahiro Mouri

Mayu Okada

Tatsuhiro Iwama

Shigeru Okamoto

A microphase-separated structure comprising a block copolymer, which contains at least a block chain A consisting of a monomer A as a repeating unit and a block chain B consisting of a monomer B as a repeating unit, and a solvent, wherein the solvent has a temperature zone 1 where the block chain A and the block chain B are soluble and a temperature zone 2 where the block chain A is insoluble but the block chain B is soluble, and a structural period thereof varies by changing temperature between the temperature zone 1 and the temperature zone 2.

Microphase-separated structure, immobilized microphase-separated structure and wavelength-variable laser oscillator, temperature sensor and light filter using the structure

An ultraviolet radiation detector, detecting an ultraviolet radiation transmitted through or reflected from a measurement samplefrom a light beam including at least the ultraviolet radiation, is characterized by spectral meansfor spectrally splitting the ultraviolet radiation from the light beam and photodetection meansfor detecting the ultraviolet radiation spectrally split by the spectral means, the photodetection meansincluding a photoelectric surface detecting only the ultraviolet radiation and formed of an element selected from In, Ga, N, Al, O and Cs.

Ultraviolet radiation detector and apparatus for evaluating ultraviolet radiation protection effect

When a piezoelectric elementapplies an external force to a plastic photonic crystal, the photonic crystal deforms, and accordingly, the photonic band gap easily changes. When the photonic band gap changes, transmission of light with a specific wavelength is limited. Therefore, light with a desired wavelength is outputted from the photonic crystalupon sufficient tuning, and extracted to the outside through an output window. In the present invention, a plastic photonic crystalwhich can achieve sufficient wavelength tuning although it is small is used, and elements are unitized, so that the entire wavelength tunable light source unit is downsized.

Variable wavelength light source

A photonic crystalwith plasticity is arranged by making microspheres of silica or barium titanate or air bubbles be contained in a gel substance. When an external force is applied to this photonic crystal, photonic crystaldeforms and the photonic band gap is readily changed thereby. When the photonic band gap changes, the passage of light of a specific wavelength is restricted. Light of a desired wavelength is thus output from photonic crystal. With this invention, this wavelength can be varied readily by means of an external force.

Optical device

An end faceof an optical fiberand an end faceof an optical fiberare arranged so as to have a predetermined interval and to oppose each other in a V-grooveof a base. A solutionincluding particles used as a material of the photonic crystal is dropped into a space sectionwhich is formed by the end face, the end face, and the V-groove. Accordingly, by growing the photonic crystal from each of the end faceand the end face, the optical control section including the photonic crystalis formed on each of the end faceand the end face

Optical control unit and forming method therefor

A spatial light modulation device includes a spatial light modulation tube and converts a one-dimensional photoelectron image into a two-dimensional electron image, rotating the two-dimensional electron image, subjecting the rotated two-dimensional electron image and a previously stored electron image to addition or subtraction, and stores the electron image thus processed. An image reconstructing apparatus includes: projection means for detecting as projection data a projection of internal information of an object; the spatial light modulation device which produces and stores a corrected reconstructed image on the basis of a one-dimensional correction data image and a previously stored reconstructed image; optical reading means for reading out the reconstructed image form the spatial light modulation device; summing means for integrating parts of the readout reconstructed image to produce sum data; and comparison and correction means for subjecting the projection data and the sum data to comparison to form the one-dimensional correction data image.

Spatial light modulation device and image reconstructing apparatus using

An apparatus for measuring the temporal correlation of fundamental particles such as photons, neutrons, X-rays or the like, comprising at least one deflector for sweeping the fundamental particles or images thereof in at least one direction, an aperture member having at least two apertures for time-divisionally extracting the swept fundamental particles or the images thereof, multiplication means, such as dynode groups or photomultipliers, for multiplying each of the extracted fundamental particles or the images thereof and a correlator for performing correlating arithmetic operations on the basis of each output signal from the multiplication means.

Apparatus for measuring the temporal correlation of fundamental particles

An image reconstructing apparatus wherein the object under examination is irradiated in at least one direction to provide projection data, and the provided projection data is optically processed to form a reconstructed image representing the internal information of the object. An image associated with the projection data is formed and stored in the storage medium. The stored image is optically read out of the storage medium. The read out stored image which corresponds to one direction of irradiation is integrated at a time to produce sum data. The sum data and projection data corresponding to the same direction of irradiation are compared to form correction data. An image associated with the correction data is formed and optically superposed on the stored image in the storage medium corresponding to the same direction of irradiation, to produce the reconstructed image.

Image reconstructing apparatus

A non-contacting revolving speed detecting apparatus for detecting the speed of rotation of a rotary body includes a diffraction plate that may be attached to the surface of the rotary body, a light source for radiating monochromatic laser light onto the diffraction plate, a light detector for detecting an output diffraction pattern of reflected and diffracted light from the diffraction plate, and circuitry for processing an output signal from the light detector means to detect and display the speed of rotation of the rotary body in either a digital or an analog manner.

Non-contacting revolving speed detecting apparatus

A high spatial and time resolution measuring apparatus for optically measuring a fine area in an object to be measured, the apparatus comprising a stage for mounting a specimen thereon, a light source for generating a first light, a first optical system for leading the first light from the light source to the specimen, an objective lens for magnifying an image of a second light from the specimen, a second optical system for imaging a part of the image in a form of a slit, a streak tube having a photocathode at a position of image formation of the second optical system for receiving the part of the image and forming a streak image thereof, a housing for shielding the first optical system, the objective lens and the second optical system from stray light.

High spatial and time resolution measuring apparatus

In an object movement measuring apparatus, a movement monitor detects the movement of an object under measurement to output a signal in synchronization with the movement, and the signal thus outputted is utilized to trigger the streak camera, so that the motion of an object moving at high-speed can be detected as a streak image.

Object movement measuring apparatus

An alpha-ray image detecting apparatus detects the image of alpha-rays emitted from nuclides of a substance by analyzing the electrons emitted from the substance. The apparatus includes a vacuum chamber having a layer of fluorescent material at one end and an electronic optical system for multiplying the emitted electrons and focusing the emitted electrons on the fluourescent layer.

Alpha-ray image detecting apparatus

An apparatus for sampling, analyzing and displaying an electrical signal as disclosed having a good signal-to-noise ratio and high resolution. The apparatus includes a light pulse source for emitting a light pulse toward the electro-optical surface of a photoelectron sampling tube which in turn emits a photoelectron pulse after receiving the light pulse. The emitted photoelectron pulse is then modulated by a signal to be measured and is accelerated to an anode which may comprise a display for displaying the wave form of the electrical signal as a two-dimensional image.

Apparatus for sampling, analyzing and displaying an electrical signal

An apparatus for optically measuring a three-dimensional surface shape and inner structure of a three-dimensional object without destruction of the object. When a light pulse having a short pulse width is applied to the object, there are observed a flux of light pulses reflected from or transmitted through the object which has information on the three-dimensional surface shape and inner structure of the object. This apparatus optically measures and analyzes in the order of a picosecond the intensity distribution of the light pulses from the object with time and space, to thereby obtain a complete three-dimensional image of the object.

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Shizuoka, Japan

Yoshihiro Takiguchi