Detection device

A detection device comprising:

• a first light source configured to emit light having a predetermined wavelength;
• a second light source configured to emit light having a wavelength different from that of the light emitted by the first light source;
• a plurality of optical sensors provided at different locations from each other and configured to measure and detect the light emitted by the first light source and the second light source, the plurality of optical sensors configured to output detection values based on the detected light;
• circuitry configured to set a light quantity of at least one of the first light source or the second light source so that a measurement value based on at least one of the detection values output by the optical sensors reaches a predetermined target value;
• and
• a biometric information detector configured to, when the measurement value has reached the predetermined target value, detect information on a living body with the optical sensors using the light quantity for detecting biometric information set by the light quantity controller.