A pulse oximetry device includes a light emission device configured to emit light with a wavelength in a first wavelength interval and light with a wavelength in a second wavelength interval, a first light detector configured to detect light with a wavelength in the first wavelength interval, but not to respond to light with a wavelength in the second wavelength interval, and a second light detector configured to detect light with a wavelength in the first wavelength interval and detect light with a wavelength in the second wavelength interval, wherein the light emission device has a first light-emitting diode structure configured to emit light with a wavelength in the first wavelength interval, and a second light-emitting diode structure configured to emit light with a wavelength in the second wavelength interval, and the first light-emitting diode structure and the second light-emitting diode structure are arranged in a common light-emitting diode chip.
