An extruded resin plate (16X, 16Y) in which a layer containing a methacrylic resin (22, 22A, 22B) is laminated on at least one surface of a layer containing a polycarbonate, wherein the extruded resin plate (16X, 16Y) contains, on a surface of and/or inside the extruded plate (16X, 16Y), at least one type of a coloring material that exhibits a black color, or a plurality of types of coloring materials that exhibit a black color in combination, the glass transition temperature of the layer containing the methacrylic resin (22, 22A, 22B) is 110°C or higher, as determined according to the method indicated in the description, when the extruded resin plate (16X, 16Y) is heated for 5 hours at a constant temperature within a range of 75 to 100°C, the in-plane retardation value of at least a part of the extruded resin plate (16X, 16Y) in a width direction is 50 to 330 nm both before and after the heating, as determined according to the method indicated in the description, the decreasing rate of the retardation value after the heating to the decreasing rate thereof before the heating is 30% or lower, as determined according to the method indicated in the description, the light transmittance in wavelengths of 400 to 650 nm is 30 to 70% and the light transmittance in wavelengths of 700 to 1,000 nm is 70% or higher, as determined according to JIS K 7361-1, and the ratio ((S2-S1)/S1) which is composed of the difference (S2-S1) between a linear expansion rate of the layer containing the polycarbonate and the linear expansion rate of the layer containing the methacrylic resin (22, 22A, 22B) and the linear expansion rate of the layer containing the polycarbonate is between -10% and +10%, as determined according to the method indicated in the description. the extruded resin plate (16X, 16Y) contains, on a surface of and/or inside the extruded plate (16X, 16Y), at least one type of a coloring material that exhibits a black color, or a plurality of types of coloring materials that exhibit a black color in combination, the glass transition temperature of the layer containing the methacrylic resin (22, 22A, 22B) is 110°C or higher, as determined according to the method indicated in the description, when the extruded resin plate (16X, 16Y) is heated for 5 hours at a constant temperature within a range of 75 to 100°C, the in-plane retardation value of at least a part of the extruded resin plate (16X, 16Y) in a width direction is 50 to 330 nm both before and after the heating, as determined according to the method indicated in the description, the decreasing rate of the retardation value after the heating to the decreasing rate thereof before the heating is 30% or lower, as determined according to the method indicated in the description, the light transmittance in wavelengths of 400 to 650 nm is 30 to 70% and the light transmittance in wavelengths of 700 to 1,000 nm is 70% or higher, as determined according to JIS K 7361-1, and the ratio ((S2-S1)/S1) which is composed of the difference (S2-S1) between a linear expansion rate of the layer containing the polycarbonate and the linear expansion rate of the layer containing the methacrylic resin (22, 22A, 22B) and the linear expansion rate of the layer containing the polycarbonate is between -10% and +10%, as determined according to the method indicated in the description.