Abstract: Disclosed herein is a fabric to be used for restraint devices having both internal pressure-holding capability or low air permeability and mountability or wearer comfort, especially for air belts suitable for practical use. The fabric to be used for restraint devices includes a coated woven fabric obtained by coating, with a resin, at least one surface of a woven fabric containing multifilaments, each of which is composed of microfibers each having a fineness of 0.05 to 1 dtex, wherein the thickness of the coated woven fabric is in the range of 0.10 to 0.25 mm.

Abstract: A manufacturing method for an optical waveguide device. The manufacturing method includes the steps of forming an optical waveguide in a substrate having an electro-optic effect, forming an SiO2 film on the substrate, forming Si films on the SiO2 film, the lower surface of the substrate, and at least a part of the side surface of the substrate to thereby make a conduction between the Si film formed on the SiO2 film and the Si film formed on the lower surface of the substrate. The manufacturing method further includes the steps of applying a photoresist to the Si film formed on the SiO2 film, patterning the photoresist so that a portion of the photoresist corresponding to the optical waveguide is left, forming a groove on the substrate along the optical waveguide by reactive ion etching, and removing the photoresist and the Si films.

Abstract: A manufacturing method for a planar lightwave circuit device. A lift-off mask layer is formed on a planar lightwave circuit composed of cores and a cladding. The lift-off mask layer is next exposed to light by using a mask having a plurality of first patterns respectively corresponding to the cores and a plurality of second patterns each formed on at least one side of each first pattern in spaced relationship therewith. A wiring pattern material layer is next deposited on the lift-off mask layer exposed above, and the lift-off mask layer is next stripped off to thereby form a plurality of real patterns respectively corresponding to the first patterns and a plurality of dummy patterns respectively corresponding to the second patterns, from the wiring pattern material layer.

Abstract: A manufacturing method for a planar lightwave circuit device. A lift-off mask layer is formed on a planar lightwave circuit composed of cores and a cladding. The lift-off mask layer is next exposed to light by using a mask having a plurality of first patterns respectively corresponding to the cores and a plurality of second patterns each formed on at least one side of each first pattern in spaced relationship therewith. A wiring pattern material layer is next deposited on the lift-off mask layer exposed above, and the lift-off mask layer is next stripped off to thereby form a plurality of real patterns respectively corresponding to the first patterns and a plurality of dummy patterns respectively corresponding to the second patterns, from the wiring pattern material layer.

Abstract: A manufacturing method for a planar lightwave circuit device. A lift-off mask layer is formed on a planar lightwave circuit composed of cores and a cladding. The lift-off mask layer is next exposed to light by using a mask having a plurality of first patterns respectively corresponding to the cores and a plurality of second patterns each formed on at least one side of each first pattern in spaced relationship therewith. A wiring pattern material layer is next deposited on the lift-off mask layer exposed above, and the lift-off mask layer is next stripped off to thereby form a plurality of real patterns respectively corresponding to the first patterns and a plurality of dummy patterns respectively corresponding to the second patterns, from the wiring pattern material layer.

Abstract: A laser diode module including a laser diode assembly having a laser diode and a holder, a lens-fiber assembly having a lens and an optical fiber fixed in a given positional relationship, and a sleeve. The lens-fiber assembly includes a casing having a first hole and a second hole offset from the first hole. The lens is inserted and fixed in the first hole, and a ferrule in which the optical fiber is embedded is press-fitted with the second hole. The ferrule has a slant polished first end and a second end projecting from an end surface of the casing by a given distance. The lens and the ferrule are fixed in the casing so that a given distance is defined between the lens and the first end of the ferrule.

Abstract: A manufacturing method for an optical waveguide device. The manufacturing method includes the steps of forming an optical waveguide in a substrate having an electro-optic effect, forming an SiO2 film on the substrate, forming Si films on the SiO2 film, the lower surface of the substrate, and at least a part of the side surface of the substrate to thereby make a conduction between the Si film formed on the SiO2 film and the Si film formed on the lower surface of the substrate. The manufacturing method further includes the steps of applying a photoresist to the Si film formed on the SiO2 film, patterning the photoresist so that a portion of the photoresist corresponding to the optical waveguide is left, forming a groove on the substrate along the optical waveguide by reactive ion etching, and removing the photoresist and the Si films.

Abstract: A receptacle type optical module including a lead frame having a plurality of leads, an L-shaped block mounted on the lead frame and having a through hole, a ferrule inserted and fixed in the through hole of the L-shaped block and having an optical fiber, a carrier mounted on the L-shaped block and having a wiring pattern, and an optical element mounted on the carrier. The optical module further includes a GRIN lens fixed to an end face of the ferrule and having a spherical end face adjacent to the optical element, a transparent resin for sealing an optical coupling portion between the optical element and the GRIN lens, and a resin molded package for encapsulating all of the lead frame, the L-shaped block, the ferrule, the carrier, and the optical element except a part of the lead frame and a part of the ferrule.

Abstract: A silicon base optical waveguide manufacturing method including the steps of preparing a silicon wafer having a plurality of embedded optical waveguides, performing first-stage dicing of the silicon wafer to form a cut groove by using a first resin diamond blade having a thickness t1, and performing second-stage dicing of the silicon wafer along the cut groove to polish an end face of each optical waveguide by using a second resin diamond blade having a thickness t2 greater than the thickness t1. The second resin diamond blade includes diamond abrasive grains having a grain diameter of 2 &mgr;m or less, and the relation between the thicknesses t1 and t2 is set to t1+0.01 mm≦t2≦t1+0.05 mm.

Abstract: A manufacturing method for a planar lightwave circuit device. A lift-off mask layer is formed on a planar lightwave circuit composed of cores and a cladding. The lift-off mask layer is next exposed to light by using a mask having a plurality of first patterns respectively corresponding to the cores and a plurality of second patterns each formed on at least one side of each first pattern in spaced relationship therewith. A wiring pattern material layer is next deposited on the lift-off mask layer exposed above, and the lift-off mask layer is next stripped off to thereby form a plurality of real patterns respectively corresponding to the first patterns and a plurality of dummy patterns respectively corresponding to the second patterns, from the wiring pattern material layer.

Abstract: An optical multiplexer/demultiplexer module including a first ferrule assembly having a first sleeve and a first ferrule inserted and fixed in the first sleeve, the first ferrule having first and second optical fibers; a first element fixed to the first ferrule assembly, the first element having a first lens and a bandpass filter; and a second element fixed to the first element, the second element having a wedge plate for optical path correction, the wedge plate being formed of glass. The optical multiplexer/demultiplexer module further includes a third element fixed to the second element, the third element having a second lens; and a second ferrule assembly fixed to the third element, the second ferrule assembly having a second sleeve and a second ferrule inserted and fixed in the second sleeve, the second ferrule having a third optical fiber.

Abstract: A silicon base optical waveguide manufacturing method including the steps of preparing a silicon wafer having a plurality of embedded optical waveguides, performing first-stage dicing of the silicon wafer to form a cut groove by using a first resin diamond blade having a thickness t1, and performing second-stage dicing of the silicon wafer along the cut groove to polish an end face of each optical waveguide by using a second resin diamond blade having a thickness t2 greater than the thickness t1. The second resin diamond blade includes diamond abrasive grains having a grain diameter of 2 &mgr;m or less, and the relation between the thicknesses t1 and t2 is set to t1+0.01 mm≦t2≦t1+0.05 mm.

Abstract: An optical multiplexer/demultiplexer module including a first ferrule assembly having a first sleeve and a first ferrule inserted and fixed in the first sleeve, the first ferrule having first and second optical fibers; a first element fixed to the first ferrule assembly, the first element having a first lens and a bandpass filter; and a second element fixed to the first element, the second element having a wedge plate for optical path correction, the wedge plate being formed of glass. The optical multiplexer/demultiplexer module further includes a third element fixed to the second element, the third element having a second lens; and a, second ferrule assembly fixed to the third element, the second ferrule assembly having a second sleeve and a second ferrule inserted and fixed in the second sleeve, the second ferrule having a third optical fiber.

Abstract: A receptacle type optical module including a lead frame having a plurality of leads, an L-shaped block mounted on the lead frame and having a through hole, a ferrule inserted and fixed in the through hole of the L-shaped block and having an optical fiber, a carrier mounted on the L-shaped block and having a wiring pattern, and an optical element mounted on the carrier. The optical module further includes a GRIN lens fixed to an end face of the ferrule and having a spherical end face adjacent to the optical element, a transparent resin for sealing an optical coupling portion between the optical element and the GRIN lens, and a resin molded package for encapsulating all of the lead frame, the L-shaped block, the ferrule, the carrier, and the optical element except a part of the lead frame and a part of the ferrule.

Abstract: An optical module receives light traveling through an optical fiber in two ways. A coupler is provided in a case member and is attached to an end surface of a ferule having the optical fiber. The coupler allows light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflects light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis. A light emitting element is provided so as to be located on one of the first and second optical axes. A light receiving element is provided so as to be located on the other one of the first and second optical axes.

Abstract: A toner cartridge including an engaging protrusion and an engaging concavity on a capped unit formed at one end surface of a container, and on a seal cap capped rotatably on the capped unit, a rotating range limiting opening into which the engaging protrusion fits and a stopping claw disallowing the seal cap to rotate by fitting into the engaging concavity to keep a toner replenishing opening closed. The user can not rotate the seal cap unless he presses down the stopping claw, and thus erroneous toner leakage or scattering can be prevented.