| 摘要 |
This spectroscope is provided with: a support body having a bottom wall part provided with a recessed portion including a concave curved inner surface, and peripheral portions adjacent to the recessed portion, and side wall parts provided to the side of the bottom wall part at which the recessed portion is open; a light detection element supported on the side wall parts in a state of facing the recessed portion; and a light dispersion part provided on the inner surface of the recessed portion. When viewed from a first direction in which the recessed portion and the light detection element face each other, the length of the recessed portion in a second direction in which a plurality of grating grooves that form the light dispersion part are aligned is greater than the length of the recessed portion in a third direction orthogonal to the second direction. When viewed from the first direction, the area of the peripheral portion adjacent to the recessed portion in the second direction is greater than the area of the peripheral portion adjacent to the recessed portion in the third direction. |
