| 摘要 |
<p>A spectral module (1) is provided with a substrate (2) for transmitting light (L1) incident from the front surface (2a), a lens unit (3) for transmitting the light (L1) incident on the substrate (2), a spectroscopic unit (4) for reflecting the light incident on the lens unit (3) while separating the light into spectral components and a light detection element (5) for detecting the light (L2) reflected by the spectroscopic unit (4). The substrate (2) is provided with a concave portion (19) that has a predetermined positional relationship with alignment marks (12a, 12b) and the like functioning as a standard unit for positioning the light detection element (5) and the lens unit (3) is fitted with the concave portion (19). According to the spectral module (1), simply making the lens unit (3) fitted with the concave portion (19) can realize a passive alignment comprised of the spectroscopic unit (4) and the light detection element (5).</p> |
