Abstract: The object of the invention is to provide a thermal conductivity measuring device that comprises a heat generator arranged in such a way as to come into contact with an object to be measured for thermal conductivity, a heat resistant material arranged in such a way as to come into contact with the heat generator, at least one pair of differential thermocouples for measuring a voltage value caused by the difference in temperature of two points of the heat resistant material, the temperature being generated by allowing heat to flow from the heat generator, and a calculating device for calculating the time rate of change of output voltage of the differential thermocouples and then calculating the thermal conductivity of the object to be measured on the basis of the calculated time rate of change.

Abstract: This invention aims at providing a decorated-part of which a design of three-dimensional effect is drawn onto the decorative-surface of a part material, thus improving design-quality. A design (4), consisting of a plurality of the same fine regularly arranged basic-pattern (5), is drawn onto the decorative-surface (3a) of the automobile interior-part (1) of this invention. The fine basic-pattern (5) consists of the first-graphic (8) drawn including the first laser-processed groove (6a) and of the second-graphic (9) located in the region surrounded by the first laser-processed groove (6a) and drawn including the second laser-processed groove (6b). The inner-surface roughness (Ra1) of the first laser-processed groove (6a) is greater than the decorative-surface roughness (Ra3) where the fine basic-pattern (5) does not exist on said decorative-surface (3a) (Ra1>Ra3).

Abstract: A method for manufacturing a decorated-part comprises a first and second base coat-layer-forming process, a surface coat-layer-forming process and a laser-decorating process. In the first base coat-layer-forming process, the first base coat-layer colored in a highly light color at a lightness-level of 70 or more is formed on the surface of the resin base-material 12. In the second base coat-layer-forming process, the second base coat-layer 21C colored in a chromatic color is formed on the first base coat-layer. In the surface coat-layer-forming process, the surface coat-layer colored in a less-bright color at a lightness-level of 20 or less is formed on the second base coat-layer 21C. In the laser-decorating process, the first laser-processed groove penetrating the surface coat-layer and exposing partially the second base coat-layer is made by irradiating the infrared laser onto such surface coat-layer, thus providing a fine decoration onto the surface of said decorated-part.

Abstract: This invention provides a decorating device for vehicle-interior components, which can accurately provide gradation on the design of the surface of a resin component. The decorating device comprises a laser-irradiating device and a control device. The control device comprises a virtual-decorating surface 5a that is deformed so as to have a different curvature than the surface of the actual decorating surface 5, thus allowing for the drawing of designs thereon. The control device prepares laser-irradiating data based on the drawing-data, and it controls the laser-irradiating device based on the laser-irradiating data. The laser-irradiating device irradiates the laser L1 focused on the virtual-decorating surface 5a and conducts the laser processing on the actual decorating surface 5, with the focal point of the laser L1 having been shifted from the actual decorating surface 5.

Abstract: This invention provides a method for manufacturing a decorative-part that makes it surely and easily possible to provide fine hairline-patterns that are similar to real texture by a laser-drawing process. By the method for manufacturing the decorative part, a laser-drawing process is done onto the coating-film 21 that has been formed on the surface 13 of the three-dimensional part-material 12. In this process a laser-processed groove-group 23 consists of a number of laser-processed grooves 24, 25, thus providing the hairline-pattern 22 on the coating-film 21. The laser processed groove-group 23 consists of various types of arc-like laser-processed grooves 24, 25 that comprise different curvature radii R of 1,000 mm or more. The arc-like laser-processed grooves 24, 25 are arranged extending appropriately in the same direction and of which each groove crosses at three degrees or less in irregular overlaps that show the line of each groove being wider than any other part.

Abstract: This invention provides a method for manufacturing decorated-parts of high design-quality and reliability, since the exposed surface of the base coat-layer is not bulged, and thus the color of said coat-layer is distinct. The method for manufacturing decorated-parts of this invention comprises a base coat-layer-forming process, a surface coat-layer-forming process and a laser-decorating process. In the base coat-layer-forming process, a resin-base material of a highly light color at a lightness-level of 70 or more or a clear and colorless resin base-material is formed. In the surface coat-layer-forming process, the surface coat-layer of a less-bright color at a lightness-level of 20 or less is formed on the base coat-layer. In the laser-decorating process, the first laser-processed groove penetrating the surface coat-layer and exposing partially the base coat-layer is made by irradiating the infrared laser onto such surface coat-layer, thus providing a fine decoration onto the surface of said decorated-part.

Abstract: A target bipyridine compound is synthesized with high purity and a high yield in a simple and safe manner in a short period of time. A method for synthesizing a di-tert-butyl-2,2?-bipyridine compound is provided, and the method includes a step of reacting, in a reaction solvent, a tert-butylpyridine compound with a dispersion product obtained by dispersing an alkali metal in a dispersion solvent. A method for synthesizing a bipyridine compound having no substituents is also provided, and the method includes a step of reacting, in a reaction solvent, pyridine with a dispersion product obtained by dispersing an alkali metal in a dispersion solvent.

Abstract: This invention provides a method for manufacturing a decorated part having a dynamic visual effect of a design that is drawn onto the surface of a work, thus reducing the manufacturing cost. The decorated part is manufactured by a laser-irradiating process, which involves irradiating a laser onto a decorative surface 4, thus forming a design 20 having many laser-processed linear grooves 21 closely aligned in a specific direction F1 on said decorative surface. Also, in the laser-irradiating process, said design 20 is formed such that the angle ?2 that is made by the specific direction F1 and by the direction F2 in which the laser-processed linear grooves 21 are extending is gradually changing into the direction in which such laser-processed linear grooves are aligned.

Abstract: This invention provides a method for manufacturing a decorative-part that makes it surely and easily possible to provide fine hairline-patterns that are similar to real texture by a laser-drawing process. By the method for manufacturing the decorative part, a laser-drawing process is done onto the coating-film 21 that has been formed on the surface 13 of the three-dimensional part-material 12. In this process a laser-processed groove-group 23 consists of a number of laser-processed grooves 24, 25, thus providing the hairline-pattern 22 on the coating-film 21. The laser processed groove-group 23 consists of various types of arc-like laser-processed grooves 24, 25 that comprise different curvature radii R of 1,000 mm or more. The arc-like laser-processed grooves 24, 25 are arranged extending appropriately in the same direction and of which each groove crosses at three degrees or less in irregular overlaps that show the line of each groove being wider than any other part.

Abstract: This invention provides a method for manufacturing a decorative-part of which the joint-lines bordering the laser-irradiation regions are unnoticeable, thus avoiding deterioration of the design-quality of such a decorative-part. Of this invention, the design (4) comprises the first-blocks (6) of a plurality of design-patterns (5) that are closely arranged with the second-blocks (8) of a plurality of design-patterns (7) that are different from those of the first-blocks (6). In the laser-irradiation-region-setting process, the decorative-area is divided into a plurality of laser-irradiation regions (LR1, LR2 and LR3), at which time the joint-lines (J1, J2) are set as borders of the first-blocks (6) and the second-blocks (8) of the design (4). In the laser-irradiation process, a laser-deflector is relatively displaced, and a laser L is irradiated onto each of the laser-irradiation regions (LR1, LR2 and LR3).

Abstract: This invention aims at providing a decorated-part of which a design of three-dimensional effect is drawn onto the decorative-surface of a part material, thus improving design-quality. A design (4), consisting of a plurality of the same fine regularly arranged basic-pattern (5), is drawn onto the decorative-surface (3a) of the automobile interior-part (1) of this invention. The fine basic-pattern (5) consists of the first-graphic (8) drawn including the first laser-processed groove (6a) and of the second-graphic (9) located in the region surrounded by the first laser-processed groove (6a) and drawn including the second laser-processed groove (6b). The inner-surface roughness (Ra1) of the first laser-processed groove (6a) is greater than the decorative-surface roughness (Ra3) where the fine basic-pattern (5) does not exist on said decorative-surface (3a) (Ra1>Ra3).

Abstract: A measuring method of a longitudinal distribution of bending loss of an optical fiber includes calculating an arithmetical mean value I(x) from two backscattering light intensities of two backscattering light at a position x obtained by bidirectional OTDR measurement of the optical fiber; and obtaining a bending loss value at the position x from a mode field diameter 2W(x) and a relative refractive index difference ?(x) at the position x calculated from the arithmetical mean value.

Abstract: This invention provides a decorating device for vehicle-interior components, which can accurately provide gradation on the design of the surface of a resin component. The decorating device comprises a laser-irradiating device and a control device. The control device comprises a virtual-decorating surface 5a that is deformed so as to have a different curvature than the surface of the actual decorating surface 5, thus allowing for the drawing of designs thereon. The control device prepares laser-irradiating data based on the drawing-data, and it controls the laser-irradiating device based on the laser-irradiating data. The laser-irradiating device irradiates the laser L1 focused on the virtual-decorating surface 5a and conducts the laser processing on the actual decorating surface 5, with the focal point of the laser L1 having been shifted from the actual decorating surface 5.

Abstract: For example, of a first intensity distribution waveform WF1 indicated by a distance distribution of an intensity of light which returns to one end of a core of a multicore fiber, and a second intensity distribution waveform WF2 indicated by a distance distribution of an intensity of light which returns to the other end of the core, the second intensity distribution waveform WF2 is inverted. Further, for example, an inverted intensity distribution waveform WF3 which is inverted and the first intensity distribution waveform WF1 which is not inverted are added.

Abstract: A measuring method of a hole diameter of a holey optical fiber includes calculating an arithmetical mean value I(x) from two backscattering light intensities at a position x of two backscattering light waveforms of the holey optical fiber, in which the two backscattering light waveforms are obtained by OTDR measurement; and obtaining the hole diameter at the position x, based on a correlation between an arithmetical mean value I(x) and an hole diameter of the holey optical fiber that is obtained in advance.

Abstract: A hole-assisted optical fiber includes a core portion and a cladding portion that includes an inner cladding layer, an outer cladding layer, and holes formed around the core portion. A diameter of the core portion is 3 ?m to 9.8 ?m, a relative refractive index difference of the core portion relative to the outer cladding layer is 0.11% to 0.45%, an outside diameter of the inner cladding layer is 53 ?m or less, a relative refractive index difference of the inner cladding layer relative to the outer cladding layer is a negative value, ?0.30% or more, a diameter of each hole is 2.4 ?m to 4.0 ?m, a hole occupancy rate is 17% to 48%, a bending loss at a wavelength of 1625 nm when bent at a radius of 5 mm is 1 dB/turn or less, and a cut-off wavelength is 1550 nm or less.

Abstract: At least either convex parts 11 set on the surface 3a of a work 2 or concave parts 21 set in a location different from the convex part 11 are formed by laser irradiation. Then, a protective film 71 is formed that covers the surface 3a of the work 2 and the surface 13 of the convex parts 11 and the surface 22 of the concave parts 21.

Abstract: For example, of a first intensity distribution waveform WF1 indicated by a distance distribution of an intensity of light which returns to one end of a core of a multicore fiber, and a second intensity distribution waveform WF2 indicated by a distance distribution of an intensity of light which returns to the other end of the core, the second intensity distribution waveform WF2 is inverted. Further, for example, an inverted intensity distribution waveform WF3 which is inverted and the first intensity distribution waveform WF1 which is not inverted are added.

Abstract: A measuring method of a longitudinal distribution of bending loss of an optical fiber includes calculating an arithmetical mean value I(x) from two backscattering light intensities of two backscattering light at a position x obtained by bidirectional OTDR measurement of the optical fiber; and obtaining a bending loss value at the position x from a mode field diameter 2W(x) and a relative refractive index difference ?(x) at the position x calculated from the arithmetical mean value.

Abstract: A measuring method of a hole diameter of a holey optical fiber includes calculating an arithmetical mean value I(x) from two backscattering light intensities at a position x of two backscattering light waveforms of the holey optical fiber, in which the two backscattering light waveforms are obtained by OTDR measurement; and obtaining the hole diameter at the position x, based on a correlation between an arithmetical mean value I(x) and an hole diameter of the holey optical fiber that is obtained in advance.