To provide a thermoplastic resin composition having excellent transmittance of a specific wavelength as a part for an optical sensor and excellent absorbency of a laser welding wavelength carrying out laser welding with other materials and to provide a molded product, a sheet-like member and a laminate composed of the resin composition.

The thermoplastic resin composition has ≤65% light transmittance at 808 nm wavelength λ and ≤70% light transmittance at 850 nm wavelength λ measured for a test piece having 1 mm thickness and is obtained by compounding a pigment or a dye in a thermoplastic resin. The molded product, especially the sheet-like member is formed of the composition. The laminate is obtained by welding the molded product to a molded product composed of a thermoplastic resin having ≥75% light transmittance at 850 nm wavelength λ measured for a test piece having 1 mm thickness with laser.

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