An optical sensor device includes a resin sealing portion for sealing an optical sensor element fixed to an element-mounting portion. The resin sealing portion is constituted of a resin having mixed and dispersed therein a glass filler obtained by pulverizing a phosphate-based glass which has spectral luminous efficacy properties by composition adjustment and high heat resistance and weatherability. The optical sensor device is highly reliable and capable of accommodating size and thickness reductions in packages and has stable and hardly changeable spectral luminous efficacy properties.