Apparatus and method for generating depth image

摘要

Provided is a depth image generating apparatus. The depth image generating apparatus may include a filtering unit, a modulation unit, and a sensing unit. The filtering unit may band pass filter an infrared light of a first wavelength band among infrared lights received from an object. The modulation unit may modulate the infrared light of the first wavelength band to an infrared light of a second wavelength band. The sensing unit may generate an electrical signal by sensing the modulated infrared light of the second wavelength band.

主权项

1. An apparatus for generating a depth image, comprising:
a light emitter configured to emit the infrared light of a first wavelength band towards an object; a light receiver configured to receive a reflected infrared light from the object; a filter configured to band pass filter an infrared light of the first wavelength band among the reflected infrared lights received from the object; a modulator configured to modulate the filtered infrared light of the first wavelength band to an infrared light of a second wavelength band; a sensor configured to generate an electrical signal by sensing the modulated infrared light of the second wavelength band; and a processor configured to generate the depth image corresponding to the object using the electrical signal, wherein
the first wavelength band corresponds to a wavelength band including a radio wave received from sunlight to a surface of the Earth and having an infrared intensity less than or equal to a first threshold,the second wavelength band corresponds to a wavelength band in which an efficiency of the sensor is greater than or equal to a third threshold,the first wavelength band is substantially different from the second wavelength band,the first wavelength band corresponds to a wavelength band comprising 1300 nanometers (nm) and having a bandwidth less than or equal to a second threshold, andthe second threshold is about 10 nm.