Spectral filter module, spectroscopic camera, and electronic device

A spectroscopic device comprising:

• a first controller configured to output a trigger signal, the trigger signal repeatedly alternating between a high level and a low level, the trigger signal having a first timing state and a second timing state, the high level being changed to the low level at the first timing state, the low level being changed to the high level at the second timing state;
• a spectral filter configured to split incident light having a wavelength corresponding to a drive voltage from the incident light and output split light;
• a second controller configured to output a wavelength command value and change a value of the wavelength command value every time one of the first timing state and the second timing state occurs;
• a drive circuit configured to receive the wavelength command value from the second controller and output the drive voltage corresponding to the received wavelength command value;
• and
• a light-receiving sensor configured to receive the split light and output a light-receiving signal corresponding to an intensity of the received split light every time the other of the first timing state and the second timing state occurs.