To provide a light measuring device capable of performing spectroscopic measurement with high accuracy.
A spectrometer 1 comprises an etalon for short-wavelength region 2A that extracts first wavelength light in a first measurement wavelength region, an etalon for long-wavelength region 2B that extracts second wavelength light in a second measurement wavelength region, a wavelength of which is longer than a wavelength of the first measurement wavelength region, an aperture for short-wavelength region 4A that adjusts the amount of light to be measured that is incident on the etalon for short-wavelength region 2A, an aperture for long-wavelength region 4B that adjusts the amount of the light to be measured that is incident on the etalon for long-wavelength region 2B, a photodetector for short-wavelength region 3A that receives the first wavelength light and outputs a detection signal, and a photodetector for long-wavelength region 3B that receives the second wavelength light and outputs a detection signal. The amount of the light passing through the aperture for short-wavelength region 4A is larger than the amount of the light passing through the aperture for long-wavelength region 4B.
| WO/2021/180442 | CALIBRATION OF A DIGITAL CAMERA FOR USE AS A SCANNER |
| WO/2003/050514 | POSITION-DEPENDENT OPTICAL METROLOGY CALIBRATION |
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| JP2005106753A | 2005-04-21 |
Osamu Suzawa
Kazuhiko Miyasaka
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