Olympus Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Hiroyoshi Yajima

Isao Kidoguchi

Yoshiaki Hasegawa

Kenji Taira

Keiji Ito

Kiminori Mizuuchi

Yasuo Kitaoka

Akihiko Ishibashi

Toshiya Yokogawa

Kenichi Kimura

Yuji Hirai

Makoto Igarashi

Hiroshi Miyajima

Akira Enokihara

Shinichi Takimoto

Yoshikazu Yoshida

Mamoru Hasegawa

Hiroshi Ogura

Takeshi Watanabe

Masanori Ogata

Satoshi Homma

Yuji Hashidate

Masahiro Kosaki

Provided is an optical fiber scanner capable of generating an image with excellent image quality, which displaces an emission end of an optical fiber by means of an optical scanning actuator and scans light emitted from the optical fiber, in which the optical fiber 31 includes a photonic crystal fiber at least in a propagation path of the light leading to the optical scanning actuator.

Optical fiber scanner and scanning endoscope apparatus

An optical fiber scanning apparatus is the optical fiber scanning apparatus for which an optical fiber to which a permanent magnet is disposed and which is configured to emit illumination light from a distal end portion is arranged in a hollow portion of a magnetic field generation unit, the magnetic field generation unit is provided with four coil units each including a flexible substrate where a planar coil, a lead-out wiring layer of the planar coil and an external connection electrode pad are disposed, and an inside of the four coil units arranged in a square prism shape configures the hollow portion.

Optical fiber scanning apparatus and optical scanning type endoscope

An optical fiber connection mechanism includes a pair of connectors and a split sleeve that are used in an endoscope. The connectors include respective ferrules, an end of a single-mode optical fiber and a collimator lens is mounted in each ferrule, and the collimator lens is disposed at the tip of the single-mode optical fiber. The optical fiber connection mechanism is configured so that when the ferrules are inserted into ends of the split sleeve, the collimator lenses face each other with a gap therebetween and the single-mode optical fibers are optically connected to each other. The ferrules are loosely fit in the corresponding connectors to be displaceable within a predetermined range in the direction along the optical axis of the single-mode optical fibers.

Optical fiber connection mechanism and optical fiber connection method

A medical apparatus includes a treatment device configured to be capable of treating a subject by applying energy to the subject, an optical fiber including a light emitting face for emitting light into the subject, the optical fiber being connected to the treatment device, and a shield portion that is disposed in front of the light emitting face of the optical fiber, the shield portion being configured to expose the light emitting face when the treatment device does not perform a treatment operation and to shield the light emitting face when the treatment device performs the treatment operation.

Medical apparatus

A multiphoton-excited measuring device measuring a sample with the use of a multiphoton absorption phenomenon by optical pulses having high intensity, comprising a short pulse light sourceemitting optical pulses; an irradiation optical systemirradiating a samplewith optical pulses emitted from the short pulse light source; a detectordetecting signal light generated, in association with multiphoton excitation, from the sampleby the irradiation with optical pulses; and an optical pulse compression meanscompressing a pulse width, with the use of intensity-dependent nonlinear effects of the optical fiber, so that a pulse width of optical pulses with which the sampleis to be irradiated is shorten to equal to or narrower than that of optical pulses emitted from the short pulse light sourceand so that a spectral width of optical pulses with which the sampleis to be irradiated is wider than that of optical pulses emitted from the short pulse light source, which makes it possible to stably irradiate, with the use of easy-to-use short pulse light source, a sample with optical pulses having higher peak intensity and a shorter temporal width and measure the sample easily with high accuracy without requiring sophisticated laser techniques and skills.

Multiphoton-excited measuring device

An optical inspection device, comprising a light generation means, a light irradiation meansirradiating an object to be inspectedwith light generated from the light generation meansand a photodetection meansphotoelectrically converting signal light obtained from the object to be inspectedthrough irradiation of light by the light irradiation means, and inspecting the object to be inspectedbased on output from the photodetection means, wherein a light amplification meansamplifying signal light obtained from the object to be inspectedis provided. There is thus provided an optical inspection device capable of photoelectrically converting signal light from the object to be inspected with high sensitivity and promptly with its inexpensive configuration without increasing the intensity of light with which the object to be inspected is irradiated and without using an expensive low-noise and high-sensitivity photodetector.

Optical inspection device, electromagnetic wave detection method, electromagnetic wave detection device, organism observation method, microscope, endoscope, and optical tomographic image generation device

There are provided a photodetection device, a photodetection method, a microscope and an endoscope, which are capable of heterodyne-detecting desired light to be detected with high sensitivity and high S/N ratio, among which the photodetection device includes: a local light generation unit () generating local light having a plurality of optical frequency components in an optical frequency band of light to be detected within a given period of time; a light combining unit () combining the local light generated from the local light generation unit () and the light to be detected; and a photoelectric conversion unit () photoelectrically-converting light output from the light combining unit () and generating a beat signal of the local light and the light to be detected, such that the light to be detected is heterodyne-detected based on an output of the photoelectric conversion unit ().

Photodetection device for detecting low temporal coherence light, photodetection method, microscope and endoscope

A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.

Light source, optical pickup, and electronic apparatus

A semiconductor laser device according to the present invention includes: a semiconductor laser chipfor emitting laser light; a stemfor supporting the semiconductor laser chip; a plurality of terminal electrodes, inserted in throughholes provided in the stem, for supplying power to the semiconductor laser chip; and a caphaving an optical windowwhich transmits laser light and being affixed to the stemso as to cover the semiconductor laser chip. Between the stemand the terminal electrodes, this device includes insulation glass, which does not release silicon fluoride gas when heated to a temperature of no less than 700&#xb0; C. and no more than 850&#xb0; C.

Semiconductor laser device which is capable of stably emitting short-wavelength laser light

A laminated composite includes: a 1st-conductive-type cladding layer laid on a substrate; an active layer laid on the 1st-conductive-type cladding layer; and a ridge-stripe 2nd-conductive-type cladding layer laid on the active layer. A pair of films is disposed at the end faces of the laminated composite so as to oppose each other along the lamination direction. The paired films are formed to have different spectral reflectances from each other. The resonator structure is formed with the laminated composite and the paired films. When, in the length direction of the resonator, a side with one of the paired films which has a smaller spectral reflectance is the forward side and a side with the other film having a larger spectral reflectance is the backward side, the laminated composite is structured so that the optical confinement factor becomes smaller on the forward side than on the backward side.

Ridge-stripe semiconductor laser

An optical modulator includes an optical waveguide, a modulating electrode, a conductive layer, an electric signal input section, and connector members. At least a portion of the optical waveguide is made of an electro-optic material. The modulating electrode includes a first conductor line and a second conductor line, which are coupled together electromagnetically, and applies a modulating electric field to a portion of the optical waveguide. The conductive layer forms a first microstrip line with the first conductor line and a second microstrip line with the second conductor line, respectively. Through the electric signal input section, an RF modulating signal is supplied to the modulating electrode. The connector members connect the first and second conductor lines together at both ends. In this optical modulator, the first and second conductor lines function as an odd-mode resonator for the RF modulating signal.

Optical modulator and communications system including the optical modulator

A method of machining a glass substrate by using a laser, in which a low-permittivity, low-dielectric-loss glass substrate capable of coping with mass production processes is made applicable as the substrate of a high-frequency circuit intended for microwave and millimeter-wave bands in particular. For that purpose, a glass substrate is provided in which the amount of air bubbles in glass is arbitrarily controlled to improve the workability of the substrate itself. Then, the glass substrate is machined while being irradiated with a pulsed laser for a plurality of times, thereby improving the machining shape of the glass substrate. Since glass substrates which are typically difficult to machine can be easily applied to the fabrication of high-frequency circuits, it becomes possible to supply high-performance circuits and apparatuses widely to the public.

Growing community of inventors

Kanagawa, Japan

Hiroyoshi Yajima