| 摘要 |
A spectrometer 1 A is made up of: an optical body 10 within which a light separation path is set along which an object light to be separated propagates; a light entry slit 16 through which the object light enters; a diffraction grating 17 for spectrally separating the incident object light; and a photodiode array 18 for detecting the object light separated by the diffraction grating 17 . As an optical member for optically interconnecting the optical body 10 and the photodiode array 18 , an optical connection member 20 is provided, with its light entry surface 21 for the separated object light in contact with the upper surface 11 of the optical body 10 , with its light exit surface 22 in contact with the photodiode array 18 , with the light exit surface 22 tilted by a specified angle relative to the light entry surface 21 . Thus, the spectrometer capable of bringing about sufficient accuracy of placing optical elements in a simple constitution while bringing down cost is realized.
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