Patent ID: 9015868
Filing Date: 2015-04-28
Classification: A42B,A61F,G02C

Abstract:
1. A wearable fog-resistant structure, comprising: a lens or shield having a surface with opposite side ends, and with upper and lower portions extending along upper and lower peripheral edges, respectively; a transparent conductive film formed on the surface of the lens or shield; an upper linear electrode provided on the upper portion of the surface adjacent the upper peripheral edge, a lower linear electrode provided on the lower portion of the surface adjacent the lower peripheral edge; each electrode having opposite ends on the opposite side ends of the surface, an outer border extending between said opposite ends and contoured to follow an adjacent peripheral edge of the lens or shield, and an inner border extending between said opposite ends and spaced from the outer border by a width; wherein the width of at least one electrode of the upper linear electrode and the lower linear electrode varies to maintain substantially equal spacing between the inner border of the upper linear electrode and the inner border of the lower linear electrode throughout a full uninterrupted lateral extent of the transparent conductive film; wherein the lens or shield has a central vertical region and opposite side regions on opposite sides of the central vertical region, the central vertical region being narrower in height than the opposite side regions, and the width of the at least one electrode being larger in the opposite side regions than in the central vertical region, wherein variation of the width of said at least one electrode results in no difference in temperature between the central vertical region and the opposite side regions of the lens or shield when electrical power is supplied to the transparent conductive film; further comprising power supply lines, and wherein the surface includes an insulating portion on the opposite side ends of the surface of the lens or shield, in which each of the opposite ends of the upper linear electrode and the lower linear electrode are connected to a respective end of the power supply lines; wherein each of the opposite ends of the upper linear electrode and the lower linear electrode are used as a first connection terminal and each of opposite ends of the power supply lines are used as a second connection terminal; in opposite end portions of the lens or shield, one end of each of the upper linear electrode and the lower linear electrode are disposed close to each other; and the first connection terminal of each of the opposite ends of the upper linear electrode and the lower linear electrode are pressure-bonded to the second connection terminal of each of the opposite ends of the power supply lines; and wherein the first connection terminal of each of the opposite ends of the upper linear electrode and of the lower linear electrode are pressure-bonded by crimp bonding to the second connection terminal of each of the opposite ends of the power supply lines.