Abstract: A white light-emitting device using a fluorescent fiber includes a blue semiconductor light-emitting element (2) for emitting an excitation light (a), and an optical fiber (3) having one side end face and the other side end face, the excitation light (a) emitted from the blue semiconductor light-emitting element (2) being made incident to the one side end face to be guided to the other side end face. The optical fiber (3) includes a core containing therein a phosphor for emitting wavelength conversion lights by being excited by the excitation light (a) received from the blue semiconductor light-emitting element (2), and a cladding member (3B) having a light emission surface in its peripheral surface, at least a part of optically multiplexed lights, which are obtained by optically multiplexing the wavelength conversion lights and the excitation light, being emitted through the light emission surface.

Abstract: A white light-emitting device using a fluorescent fiber includes a blue semiconductor light-emitting element (2) for emitting an excitation light (a), and an optical fiber (3) having one side end face and the other side end face, the excitation light (a) emitted from the blue semiconductor light-emitting element (2) being made incident to the one side end face to be guided to the other side end face. The optical fiber (3) includes a core containing therein a phosphor for emitting wavelength conversion lights by being excited by the excitation light (a) received from the blue semiconductor light-emitting element (2), and a cladding member (3B) having a light emission surface in its peripheral surface, at least a part of optically multiplexed lights, which are obtained by optically multiplexing the wavelength conversion lights and the excitation light, being emitted through the light emission surface.

Abstract: A white light-emitting device using a fluorescent fiber includes a blue semiconductor light-emitting element (2) for emitting an excitation light (a), and an optical fiber (3) having one side end face and the other side end face, the excitation light (a) emitted from the blue semiconductor light-emitting element (2) being made incident to the one side end face to be guided to the other side end face. The optical fiber (3) includes a core containing therein a phosphor for emitting wavelength conversion lights by being excited by the excitation light (a) received from the blue semiconductor light-emitting element (2), and a cladding member (3B) having a light emission surface in its peripheral surface, at least a part of optically multiplexed lights, which are obtained by optically multiplexing the wavelength conversion lights and the excitation light, being emitted through the light emission surface.

Abstract: A white light-emitting device using a fluorescent fiber includes a blue semiconductor light-emitting element (2) for emitting an excitation light (a), and an optical fiber (3) having one side end face and the other side end face, the excitation light (a) emitted from the blue semiconductor light-emitting element (2) being made incident to the one side end face to be guided to the other side end face. The optical fiber (3) includes a core containing therein a phosphor for emitting wavelength conversion lights by being excited by the excitation light (a) received from the blue semiconductor light-emitting element (2), and a cladding member (3B) having a light emission surface in its peripheral surface, at least a part of optically multiplexed lights, which are obtained by optically multiplexing the wavelength conversion lights and the excitation light, being emitted through the light emission surface.

Abstract: A multiple wavelength laser light source using a fluorescent fiber includes a blue semiconductor laser element (2) for emitting an excitation light (a), and an optical fiber (17) having a first side fiber end face and a second side fiber face, the excitation light (a) from the blue semiconductor laser element (2) being made incident to the first side fiber end face, the excitation light (a) thus made incident to the first side fiber end face being emitted through the second side fiber face, in which the optical fiber (17) has dichroic mirror portions constituting a laser resonator (3) in its first and second side fiber end faces, respectively, and a core of the optical fiber (17) is made of a wavelength-converting member including a low phonon glass containing therein at least praseodymium ions as trivalent rare earth ions for emitting wavelength conversion lights by being excited by the excitation light (a).

Abstract: The present invention is to provide a polyamide resin composition for fuse elements, assuring sufficient arc resistance upon boosting of vehicles voltage (e.g., 42 V system), being excellent in rigidity, heat resistance and transparency. The present invention relates to a polyamide resin composition for fuse elements, comprising: a mixed polyamide 100 parts by mass consisting of (A) polycaproamide (nylon 6) 95 to 5% by mass and (B) poly(hexamethylene adipamide) (nylon 66) 5 to 95% by mass; and (C) asilicatelayerof lamellarsilicate 0.1 to 20 parts by mass dispersed on molecular order level in the above described (A) and/or (B). The polyamide resin composition may further contain (D) an antioxidant, (E) a metal soap based lubricant, and/or (F) an inorganic fibrous reinforcing material are contained. The present invention also relates to a fuse element formed from the polyamide resin composition for fuse elements.

Abstract: In a relay (100), right and left sides of an edge on an upper end side of an L-shaped armature (201) are bent to form an engagement portion (201a) and the armature 201 is held to be rocked and displaced through an energizing spring piece (205c) of a hinge spring (205) in a state in which the engagement portion (201a) is engaged with an edge portion 204c of an end face 204a on an upper end side of a core (204). During magnetic adsorption, moreover, an upper end of the armature (201) has an outer peripheral surface thereof to abut on the end face (204a) at the upper end side of the core (201) in a close contact state.

Abstract: The present invention is to provide a polyamide resin composition for fuse elements, assuring sufficient arc resistance upon boosting of vehicles voltage (e.g., 42 V system), being excellent in rigidity, heat resistance and transparency.

Abstract: A polyamide resin is disclosed. Moldings of the polyamide resin composition are lightweight and have high mechanical strength including high flexural strength and high flexural modulus, as well as good heat resistance, good impact resistance and good metallic appearance. In the polyamide resin composition, the polyamide resin is reinforced with from 0.1 to 10% by weight of a layered silicate uniformly dispersed therein on a molecular level. To 100 parts by weight of the reinforced polyamide resin are added from 0.1 to 10 parts by weight of particles capable of expressing a metallic color.

Abstract: The object of the present invention is to provide an oxide glass capable of exhibiting a long lasting afterglow and photostimulated phosphorescence, whereby energy can be accumulated by radiation excitation, for example, by &ggr;-rays, X-rays, UV-rays, etc. and light emission can be continued for a long time even after stopping the excitation. That is, the present invention relates to an oxide glass capable of exhibiting a long lasting afterglow and photostimulated luminescence, characterized by a constitutional composition comprising, at least, terbium oxide (Tb2O3) or manganese oxide (MnO), gallium oxide (Ga2O3) or aluminum oxide (Al2O3), alkali metal oxide or alkaline earth metal oxide and boron oxide (B2O3) or silicon oxide (SiO2) or zinc oxide (ZnO).

Abstract: The present invention provides an oxide glass capable of exhibiting a long lasting afterglow and photostimulated phosphorescence, can be used not only as a material for confirming an infrared laser or controlling an optical axis, but also as a material for recording or reproducing of &ggr;-rays, X-rays or UV-rays images and further can be used as an optical recording material of such a type that can be read. This glass material is represented, in term of atoms for making up the glass, by the following chemical composition (mol %): GeO2 21 to 80% ZnO 0 to 50% Ga2O2 0 to 55% (ZnO + Ga2O3 = 3 to 55%) Tb2O3 0 to 10% MnO 0 to 2% (Tb2O3 + MnO = 0.01 to 10%) R2O 0 to 45% (R: at least one atom selected from Li, Na, K and Cs) R′O 0 to 40% (R′: at least one atom selected from Mg, Ca, Sr and Ba) R2O + R′O 0.

Abstract: The present invention provides an oxide glass capable of exhibiting a long lasting afterglow and photostimulated phosphorescence, whereby energy can be accumulated by radiation excitation, for example, by .gamma.-rays, X-rays, UV-rays, etc., light emission can be continued for a long time even after stopping the excitation. Furthermore, the long lasting afterglow and photostimulated luminescence oxide glass can be used not only as a phosphorescent material for night illumination or night signal, but also as a material for confirming an infrared laser or controlling an optical axis because of exhibiting photostimulated luminescence by irradiation of infrared rays or visible rays. In addition, this glass is useful for recording or reproducing of .gamma.-rays, X-rays or UV-rays images. This glass material is represented, in term of atoms for making up the glass, by the following chemical composition (mol %):______________________________________ SiO.sub.2 1 to 55% B.sub.2 O.sub.3 1 to 50% (SiO.sub.2 + B.sub.2 O.

Abstract: A glass material is provided which is capable of exhibiting fluorescence in the visible region by ultraviolet ray excitation. This glass material is represented, in term of atoms for making up the glass, by the following chemical composition (mol %):______________________________________ SiO.sub.2 2 to 60%, B.sub.2 O.sub.3 5 to 70% (SiO.sub.2 + B.sub.2 O.sub.3 = 50 to 70%) RO 5 to 30% (R: at least one atom selected from Mg, Ca, Sr and Ba) ZnO 0 to 15% ZrO.sub.2 0 to 10%, Tb.sub.2 O.sub.3 or Eu.sub.2 O.sub.3 2 to 15% (containing either of Tb.sub.2 O.sub.3 or Eu.sub.2 O.sub.3) Ln.sub.2 O.sub.3 0 to 20% (Ln: at least one atom selected from Y, La, Gd, Yb, Lu, Sm, Dy and Tm) CeO.sub.2 0 to 1% Bi.sub.2 O.sub.3 0 to 2% Sb.sub.2 O.sub.3 0.01 to 0.5% and R'.sub.

Abstract: According to the present invention, there is provided a fluorophosphate fluorescent glass, capable of converting invisible ultraviolet rays into visually observable visible rays with a high efficiency and available for controlling the optical axis of a laser beam such as excimer laser, etc. The feature of this fluorescent glass consists in a fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having a chemical composition comprising, at least, (I) phosphorus (P), oxygen (O) and fluorine (F), as glass constituting components, and (II) at least one member selected from the group consisting of divalent europium, terbium, samarium and manganese, as a fluorescent agent, the divalent europium being contained as an essential component and at least one of samarium and manganese being contained as an essential component when terbium is contained.