Image sensor including color separating lens array and electronic device including the image sensor

An electronic device comprising:

• an image sensor configured to convert an optical image into an electrical signal;
• and
• a processor configured to control the image sensor, and store and output a signal generated by the image sensor,
• wherein the image sensor comprises:
• a sensor substrate comprising a plurality of first pixels configured to sense first wavelength light in an infrared ray band, a plurality of second pixels configured to sense second wavelength light in a visible light band, a plurality of third pixels configured to sense third wavelength light in a visible light band, and a plurality of fourth pixels configured to sense fourth wavelength light in a visible light band;
• and
• a color separating lens array provided on the sensor substrate, the color separating lens array comprising a plurality of first pixel corresponding regions corresponding to the plurality of first pixels, a plurality of second pixel corresponding regions corresponding to the plurality of second pixels, a plurality of third pixel corresponding regions corresponding to the plurality of third pixels, and a plurality of fourth pixel corresponding regions corresponding to the plurality of fourth pixels,
• wherein each of the plurality of first pixel corresponding regions comprises a first nanopost, each of the plurality of second pixel corresponding regions comprises a second nanopost, each of the plurality of third pixel corresponding regions comprises a third nanopost, and each of the plurality of fourth pixel corresponding regions comprises a fourth nanopost,
• wherein the first nanopost, the second nanopost, the third nanopost, and the fourth nanopost has a different cross-sectional areas such that the plurality of first pixel corresponding regions, the plurality of second pixel corresponding regions, the plurality of third pixel corresponding regions, and the plurality of fourth pixel corresponding regions change a phase of the first wavelength light incident on the color separating lens array and form a plurality of first light condensing regions condensing the first wavelength light among light passing through the plurality of first light condensing regions to the plurality of first pixels.