A terahertz wave camera that acquires information on a measurement target includes: a sensor unit in which a plurality of elements having spectral sensitivity to the terahertz wave are arranged; a readout circuit unit that reads out signals from the elements; a first light-shielding portion; and an optical unit. The first light-shielding portion reduces disturbance light to which the readout circuit unit has spectral sensitivity. The optical unit guides a terahertz wave from the measurement target to the sensor unit.