LIGHT-RECEIVING DEVICE AND METHOD FOR MANUFACTURING LIGHT-RECEIVING DEVICE

This light-receiving device is provided with: a light-receiving element to which a plurality of light-receiving units are provided; and a glass cover that has a first surface and a second surface opposite to the first surface and that is fixed on the light-receiving element so that the second surface faces the light-receiving element. The glass cover includes a plurality of diffraction gratings provided to the inside and/or the first surface. The diffraction gratings are configured so as to concentrate, on the respective light-receiving units, distance-measuring laser beams entering the first surface of the glass cover. 本发明的受光装置具备：受光元件，其设置有多个受光部，及玻璃罩，其具有第1表面、及与第1表面为相反侧的第2表面，并且以第2表面与受光元件对向的方式固定于受光元件上。玻璃罩包含设置于第1表面及内部中的至少一者的多个衍射光栅。多个衍射光栅的各个构成为将朝玻璃罩的第1表面入射的测距用激光聚光于多个受光部的各个。