Optical material and use thereof

An optical material in which a transmittance curve measured at a thickness of 2 mm thereof satisfies the following characteristics (1) to (4),

• wherein (1) the transmittance curve has a local maximum transmittance value in a wavelength range of 400 nm to 440 nm and the maximum transmittance thereof is 50% or more,
• wherein (2) the transmittance curve has a minimum transmittance value in a wavelength range of 445 nm to 470 nm,
• wherein (3) the transmittance at a wavelength of 500 nm is 70% or more, and
• wherein (4) the minimum transmittance value in the wavelength range of 445 nm to 470 nm is four-fifths or less of the transmittance at a wavelength of 500 nm,
• wherein the optical material comprises a polythiourethane and organic dyes,
• wherein the organic dyes are comprised of at least two selected from porphyrin-based compounds represented by the General Formula (A):
• wherein all of X1 to X8 represent bromine atoms;
• R1 to R4 each independently represents a hydrogen atom, and a straight or branched alkyl group;
• and M represents two hydrogen atoms, a divalent metal atom, a trivalent substituted metal atom, a tetravalent substituted metal atom, a hydroxylated metal atom, or an oxidized metal atom, and
• wherein the amount of the organic dyes is 5 ppm to 100 ppm.