Patent ID: 8334547

Claim:
A light-transmitting metal electrode comprising: a transparent substrate, and a metal electrode layer having a thickness in the range of not less than 10 nm and not more than 200 nm formed on said substrate, comprising a metal part that any pair of point-positions in the part is continuously connected, and a plurality of openings penetrating through said metal electrode layer, having an average diameter in the range of not less than 10 nm and not more than ⅓ of said wavelength of light, the pitches between the centers of said openings being not less than the average diameter and not more than ½ of said wavelength of light, wherein 90% or more of said metal part in said metal electrode layer continues linearly without breaks by the openings in a straight length between the adjoining openings of not more than ⅓ of the wavelength of light to use in 380 nm to 780 nm.