Vital sensor and method for operating a vital sensor

Abstract

A vital sensor includes at least one pixelated emitter array with first and second pixels. The pixels are configured to emit light of a wavelength range in the direction of a projection surface. The vital sensor also includes an optical element, arranged between the at least one pixelated emitter array and the projection surface, and which is configured to direct light of the first pixel onto a first region of the projection surface and light of the second pixel onto a second region of the projection surface which differs from the first region. The vital sensor further includes a photodetector configured to detect the light emitted by the pixels and reflected on the projection surface. The vital sensor additionally includes an evaluation unit configured to control the first pixel and the at least one second pixel in a pulsed and time-sequential manner to determine a first reference value.

Dependencies are inferred from the claim text.