Abstract: A neutron emission unit is configured to emit neutrons such that a center axis (Nh) of a neutron emission intersects a center axis direction of collimators (23a to 23e). A calculation unit is capable of generating information about an inspection object in the center axis direction of the collimators, based on position information of a neutron detector and/or position information of the neutron emission unit, information about an angle (?1) at which the center axis of the neutron emission intersects the center axis direction of the collimators, and a neutron amount detected by the neutron detector.

Abstract: A non-destructive inspection system 1 includes a neutron radiation source 3 capable of emitting neutrons N, and a neutron detector 14 capable of detecting neutrons Nb produced via an inspection object 6a among neutrons N emitted from the neutron radiation source 3. The neutron radiation source 3 includes a linear accelerator 11 capable of emitting charged particles P accelerated; a first magnet section 12 including magnets 12a and 12b facing each other, the magnets 12a and 12b being capable of deflecting the charged particles P in a direction substantially perpendicular to a direction of emission of the charged particles P from the linear accelerator 11; and a target section 13 capable of producing neutrons N by being irradiated with the charged particles P that have passed through the first magnet section 12.

Abstract: A non-destructive inspection system includes: a neutron emission unit 12 capable of emitting neutrons pulsed; a neutron detector capable of detecting the neutrons emitted from the neutron emission unit and penetrating through an inspection object; a storage unit storing attenuation information indicating a relationship between a material of the inspection object and attenuation of the neutrons; and a calculation unit capable of calculating distance information indicating a position of a specific portion in the inspection object in accordance with time change information which is information on a change over time in an amount of the neutrons detected by the neutron detector. The calculation unit is capable of generating information related to an amount of the specific portion from information based on the amount of the neutrons according to the time change information, using the distance information and the attenuation information.

Abstract: A non-destructive inspection system 1 includes a neutron detecting unit 4 and an arithmetic unit 60. The neutron detecting unit 4 includes a collimator 30 and a neutron detector 20 integrated together. The collimator 30 has a wall defining a through passage P. The wall is made from a material that absorbs neutrons produced via an inspection object. The neutron detector 20 is capable of detecting neutrons that have passed through the collimator 30. The arithmetic unit 60 generates information on a position and composition of the inspection object, based on information on the neutrons detected by the neutron detector 20, positional information indicating the position of the neutron detecting unit 4, and posture information indicating the posture of the neutron detecting unit 4. The positional information and the posture information are detected by a position and posture detecting unit 5.

Abstract: The neutron emission unit is configured to emit neutrons such that a center axis (Nh) of neutron emission intersects a center axis direction of collimators (23a to 23e). A calculation unit is capable of generating information about an inspection object in the center axis direction of the collimators, based on position information of the neutron detector and/or position information of the neutron emission unit, information about an angle (?1) at which the center axis of the neutron emission intersects the center axis direction of the collimators, and a neutron amount detected by the neutron detector.

Abstract: A non-destructive inspection system includes: a neutron emission unit 12 capable of emitting neutrons pulsed; a neutron detector capable of detecting the neutrons emitted from the neutron emission unit and penetrating through an inspection object; a storage unit storing attenuation information indicating a relationship between a material of the inspection object and attenuation of the neutrons; and a calculation unit capable of calculating distance information indicating a position of a specific portion in the inspection object in accordance with time change information which is information on a change over time in an amount of the neutrons detected by the neutron detector. The calculation unit is capable of generating information related to an amount of the specific portion from information based on the amount of the neutrons according to the time change information, using the distance information and the attenuation information.

Abstract: A non-destructive inspection system 1 includes a neutron detecting unit 4 and an arithmetic unit 60. The neutron detecting unit 4 includes a collimator 30 and a neutron detector 20 integrated together. The collimator 30 has a wall defining a through passage P. The wall is made from a material that absorbs neutrons produced via an inspection object. The neutron detector 20 is capable of detecting neutrons that have passed through the collimator 30. The arithmetic unit 60 generates information on a position and composition of the inspection object, based on information on the neutrons detected by the neutron detector 20, positional information indicating the position of the neutron detecting unit 4, and posture information indicating the posture of the neutron detecting unit 4. The positional information and the posture information are detected by a position and posture detecting unit 5.

Abstract: A non-destructive inspection system 1 includes a neutron radiation source 3 capable of emitting neutrons N, and a neutron detector 14 capable of detecting neutrons Nb produced via an inspection object 6a among neutrons N emitted from the neutron radiation source 3. The neutron radiation source 3 includes a linear accelerator 11 capable of emitting charged particles P accelerated; a first magnet section 12 including magnets 12a and 12b facing each other, the magnets 12a and 12b being capable of deflecting the charged particles P in a direction substantially perpendicular to a direction of emission of the charged particles P from the linear accelerator 11; and a target section 13 capable of producing neutrons N by being irradiated with the charged particles P that have passed through the first magnet section 12.

Abstract: An electronic distance meter includes an optical unit which emits light to a target object and receives the light reflected by the target object with a light receiving element, a measuring unit which calculates a length of round-trip time taken for the light to make a round trip to the target object and measures a distance to the target object according to the round-trip time of the received light, a light receiving system which receives and condenses the light reflected by the target object, and an optical guide which guides the light condensed by the light receiving element to the light receiving system, including a multi-mode graded index fiber and a multi-mode step index fiber coupled with each other.

Abstract: The invention provides a laser light emitting device, which comprises a laser light emitter for emitting a pump light, a resonator for emitting a laser beam by oscillating and amplifying the pump light and a multi-mode fiber for guiding the pump light emitted from the laser light emitter to the resonator, wherein a mode scrambler is provided on the multi-mode fiber, the pump light propagating the multi-mode fiber is stirred and a light intensity distribution is unified by the mode scrambler, and the pump light is entered to the resonator.

Abstract: The invention provides a laser light emitting device, which comprises a laser light emitter for emitting a pump light, a resonator for emitting a laser beam by oscillating and amplifying the pump light and a multi-mode fiber for guiding the pump light emitted from the laser light emitter to the resonator, wherein a mode scrambler is provided on the multi-mode fiber, the pump light propagating the multi-mode fiber is stirred and a light intensity distribution is unified by the mode scrambler, and the pump light is entered to the resonator.

Abstract: An electronic distance meter includes an optical unit which emits light to a target object and receives the light reflected by the target object with a light receiving element, a measuring unit which calculates a length of round-trip time taken for the light to make a round trip to the target object and measures a distance to the target object according to the round-trip time of the received light, a light receiving system which receives and condenses the light reflected by the target object, and an optical guide which guides the light condensed by the light receiving element to the light receiving system, including a multi-mode graded index fiber and a multi-mode step index fiber coupled with each other.

Abstract: An optical branching device comprises a first lens member comprising a transmitting plane surface, a transmitting convex surface having an approximate center of curvature in the transmitting plane surface, and a first optical fiber and a second optical fiber firmly affixed on the transmitting plane surface of the first lens member. The transmitting convex surface has a wavelength-selective mirror surface that transmits light of a first wavelength and reflects light of a second wavelength. The light of the second wavelength, which is one of the wavelengths of light emitted from the first optical fiber and is reflected and converged by the wavelength-selective mirror surface, enters into the second optical fiber.

Abstract: An optical branching device comprises a first lens member comprising a transmitting plane surface, a transmitting convex surface having an approximate center of curvature in the transmitting plane surface, and a first optical fiber and a second optical fiber firmly affixed on the transmitting plane surface of the first lens member. The transmitting convex surface has a wavelength-selective mirror surface that transmits light of a first wavelength and reflects light of a second wavelength. The light of the second wavelength, which is one of the wavelengths of light emitted from the first optical fiber and is reflected and converged by the wavelength-selective mirror surface, enters into the second optical fiber.

Abstract: An optical fiber cable, comprising a cable main unit with an optical fiber covered by a sheath and terminal units mounted on end portions of the cable main unit, wherein each of the terminal units has a transparent cover member with a refractive index approximately equal to the optical fiber, the cover member of at least one of the terminal units and the optical fiber are welded under such condition that the cover member is brought closer to or into contact with the optical fiber, and the cover member and the optical fiber are integrated with each other.

Abstract: An optical fiber cable, comprising a cable main unit with an optical fiber covered by a sheath and terminal units mounted on end portions of the cable main unit, wherein each of the terminal units has a transparent cover member with a refractive index approximately equal to the optical fiber, the cover member of at least one of the terminal units and the optical fiber are welded under such condition that the cover member is brought closer to or into contact with the optical fiber, and the cover member and the optical fiber are integrated with each other.

Abstract: An apparatus for discriminating authenticity of a card 1 having a predetermined hologram corresponding to a kind of the card 1 to discriminate the authenticity of the card 1 based on the hologram, comprises: a measuring light projecting system (semiconductor laser 25a, collimating lens 25b) to project a measuring beam P onto the hologram; an area sensor 28 to receive reflected diffraction light of the measuring beam P reflected by the hologram; a plurality of discriminating calculation means 30˜32 to perform the authenticity discrimination for card 1 by achieving calculations corresponding to respective kind of the holograms based on output signals from the area sensor 28; and a selecting mean (selecting switch 24, switch circuit 29) to select any one of the plurality of discriminating calculation means 30˜32.

Abstract: An apparatus for discriminating authenticity of a card according to the present invention comprising measuring light projecting system 23 which projects a measuring beam of light P from a predetermined direction onto a hologram 2 formed on a predetermined position on a card 1, a light receiving element 24b which receives reflected diffraction light R1, R2 and R3 generated by the measuring beam of light P reflected on the hologram 2, an averaging means 25 which varies projecting position of the measuring beam of light P to average received light signals corresponding to distribution characteristics of light intensity on the light receiving element 24b, and a discriminating means 26 to discriminate authenticity for the card by a comparison of output from the averaging means 25 with an allowable value.

Abstract: A card authenticity judging apparatus includes a light projecting system for projecting a laser measurement light Q1 toward hologram which is provided on surface of a card 1 and on which an image 4′ based on a grating pattern 3 is formed, a Fourier transform lens 27 for forming grating pattern image on a light receiving section 28 on the basis of reflected diffraction luminous flux of being reflected from the hologram, and a judging means 30′ for judging authenticity of the card 1 based on photoelectric output from the light receiving section 28, in which authenticity of the card 1 is made to judge depending on grating pattern image based on reflected diffraction light.

Abstract: An simlified optical configuration is acheved and, a direction discrimination function and a high resolving detection function are performed by one light receiving section. A TE mode emitted from an optical waveguide section 3 transmits through a beam splitter 5 and is guided to a measurement optical path. A TM mode emitted from the optical waveguide is reflected by the beam splitter 5 and is guided to a reference optical path. First and second ¼ wave plates 10 and 11 are inserted in the respective optical paths, and the TE and TM modes are acted by a ½ wave plate while travelling forward and backward on the reference and measurement optical paths. A reference light (TM mode) is reflected by a reference reflection section 8 and transmits through the beam splitter section 5. A measurement light (TE mode) is reflected by a measurement reflection section 9 and is reflected by the beam splitter section 5.