Image sensor and electronic apparatus including the same

An electronic apparatus comprising:

• a lens assembly comprising at least one lens and configured to form an optical image of an object;
• an image sensor configured to convert the optical image formed by the lens assembly into an electrical signal;
• and
• a processor configured to process a signal generated by the image sensor,
• wherein the image sensor comprises:
• a sensor substrate comprising a plurality of photodetection cells;
• a spacer layer on the sensor substrate;
• and
• a color separation lens array on the spacer layer and comprising a plurality of nanostructures,
• wherein the image sensor further comprises a plurality of unit pixels, each of the plurality of unit pixels comprising a plurality of pixels,
• wherein the plurality of pixels are defined by respective ones of the plurality of photodetection cells, and by the plurality of nanostructures,
• wherein the plurality of nanostructures are configured to split incident light according to wavelengths of the incident light within each of the plurality of unit pixels and collect the incident light, that is split, in corresponding ones of the plurality of pixels,
• wherein at least two pixels, from among the plurality of pixels, of each of the plurality of unit pixels are configured to detect light of an identical wavelength, and
• wherein a wavelength of light detected by the at least two pixels of one of the plurality of unit pixels is different from a wavelength of light detected by the at least two pixels of an identical wavelength of another one of the plurality of unit pixels.