OPTICAL FILTER, OPTICAL FILTER MODULE, SPECTROMETRIC MEASUREMENT APPARATUS, AND OPTICAL APPARATUS

摘要

An optical filter includes a first variable wavelength bandpass filter that extracts light of a first wavelength band and has first and second spectral bands and a second variable wavelength bandpass filter that extracts light of a second wavelength band adjacent to the first wavelength band and has third and fourth spectral bands. Part of the period during which the light of the first spectral band is extracted overlaps with the period during which the light of the third spectral band is extracted, and part of the period during which the light of the second spectral band is extracted overlaps with the period during which the light of the fourth spectral band is extracted.

主权项

1. An optical filter comprising:
a first variable wavelength bandpass filter that is driven during a first period; a second variable wavelength bandpass filter that is driven during a second period, the first period overlapping the second period.