Detection device and method for manufacturing the same

A detection device comprising:

• a substrate;
• a plurality of photodiodes arranged on a first principal surface of the substrate;
• a protective film that covers the photodiodes;
• a plurality of lenses provided for each of the photodiodes so as to face the photodiode with the protective film interposed between the lenses and the photodiodes;
• and
• a projection provided between the lenses,
• wherein
• a top of the projection is located at a position higher than a top of each of the lenses when viewed from the first principal surface,
• each of the photodiodes includes a plurality of partial photodiodes, in each of which a p-type semiconductor layer, an i-type semiconductor layer, and an n-type semiconductor layer are staked,
• the lenses are provided so as to overlap the respective partial photodiodes,
• the number of the projections is smaller than the number of the lenses,
• the substrate has a detection region that is divided into a plurality of detection elements each of which is provided with one or more of the partial photodiodes,
• the lenses are provided so as to overlap the partial photodiodes in the detection electrodes,
• the projection is provided at a boundary between adjacent detection elements of the detection elements,
• the projection is provided at a boundary between detection elements arranged in a first direction, of the detection elements, and
• in one detection element column in which the detection elements are arranged in the first direction in the detection region, the projection is provided for every other boundary between the detection elements.