Abstract: The present invention relates to a photosensitive glass, having a ?-OH value of 0.20/mm or less. The present invention also relates to the photosensitive glass, having a difference between a crystal precipitation temperature after an exposure and a crystal precipitation temperature before the exposure of 10° C. or more, the exposure being performed so that a cumulative amount of a light having a wavelength of 280 nm to 360 nm is 2 J/cm2 or more.

Abstract: An optical glass having: a transmittance of light at a wavelength of 270 nm of 50% or more when converted into the transmittance with a thickness of the optical glass being 1.0 mm; an average thermal expansion coefficient in a range of 50° C. to 400° C. of 4.4 ppm/° C. to 7.2 ppm/° C.; a refractive index nd of 1.55 or more; and an Abbe number vd of 50 to 60.

Abstract: A harness is provided with one or more first wires each including a first core exposed portion, one or more second wires each including a second core exposed portion, and a bonded portion formed by welding the first and second core exposed portion(s). A total cross-sectional area of the second core(s) is equal to or less than ? of the sum of total cross-sectional areas of the first and second core(s). The bonded portion has two pairs of outer surfaces extending along an extending direction of the first and second wires and facing each other and a distance H between one pair of the outer surfaces (upper/lower surfaces), out of the two pairs of outer surfaces, is longer than a distance W between another pair of the outer surfaces (right/left side surfaces). The second core exposed portion(s) is/are arranged adjacent to the upper surface Up in the bonded portion.

Abstract: A harness 1 includes copper wires 10A and aluminum wires 10B. The copper wire 10A includes a copper core 11A. The aluminum wire 10B includes an aluminum core 11B made of a material different from that of the copper core 11A and having lower conductor strength than the copper core 11A. The copper cores 11A are multiply folded, and parts on tip sides serve as a bulky portion 11AE. The harness 1 includes a joined portion 20 formed by welding the copper cores 11A including the joined portion 11AE and the aluminum cores 11B. The joined portion 20 includes a first layer 21 constituted by the copper cores 11A including the bulky portion 11AE and a second layer 22 constituted by the aluminum cores 11B and overlaid on the first layer 21.

Abstract: A harness is provided with one or more first wires each including a first core exposed portion, one or more second wires each including a second core exposed portion, and a bonded portion formed by welding the first and second core exposed portion(s). A total cross-sectional area of the second core(s) is equal to or less than ? of the sum of total cross-sectional areas of the first and second core(s). The bonded portion has two pairs of outer surfaces extending along an extending direction of the first and second wires and facing each other and a distance H between one pair of the outer surfaces (upper/lower surfaces), out of the two pairs of outer surfaces, is longer than a distance W between another pair of the outer surfaces (right/left side surfaces). The second core exposed portion(s) is/are arranged adjacent to the upper surface Up in the bonded portion.