Image sensor and electronic apparatus including the image sensor

An image sensor comprising:

• a sensor substrate including a first pixel, a second pixel, a third pixel, and a fourth pixel that are configured to sense light;
• and
• a color separating lens array including a first pixel corresponding region corresponding to the first pixel, a second pixel corresponding region corresponding to the second pixel, a third pixel region corresponding to the third pixel, and a fourth pixel corresponding region corresponding to the fourth pixel,
• wherein each of the first pixel corresponding region and the fourth pixel corresponding region include a plurality of nanoposts, an arrangement of the plurality of nanoposts in the first pixel corresponding region being rotated by 90□ with respect to an arrangement of the plurality of nanoposts in the fourth pixel corresponding region,
• the first pixel includes a first focusing signal region and a second focusing signal region that generate focusing signals independently from each other, and the first focusing signal region and the second focusing signal region are arranged to be adjacent to each other in a first direction in the first pixel, and
• the fourth pixel includes a third focusing signal region and a fourth focusing signal region that generate focusing signals independently from each other, and the third focusing signal region and the fourth focusing signal region are arranged to be adjacent to each other in a second direction that is perpendicular to the first direction in the fourth pixel.

An electronic apparatus comprising:

• an image sensor configured to convert an optical image into an electrical signal;
• a processor configured to control operations of the image sensor and to store and output a signal generated by the image sensor;
• and
• a lens assembly for providing light from an object to the image sensor,
• wherein the image sensor comprises:
• a sensor substrate including a first pixel, a second pixel, a third pixel, and a fourth pixel that are configured to sense light;
• and
• a color separating lens array comprising a plurality of nanoposts, the plurality of nanoposts being configured to:
• condense light of a first wavelength, in incident light incident on the color separating lens array, onto the first pixel and the fourth pixel,
• condense light of a second wavelength different from the first wavelength, in the incident light incident on the color separating lens array, onto the second pixel, and
• condense light of a third wavelength different from the first wavelength and the second wavelength, in the incident light incident on the color separating lens array, onto the third pixel,
• wherein the first pixel includes a first focusing signal region configured to generate a first focusing signal and a second focusing signal region configured to generate a second focusing signal, wherein the first focusing signal region and the second focusing signal region independently generate the first focusing signal and the second focusing signal, and the first focusing signal region and the second focusing signal region are arranged to be adjacent to each other in the first pixel in a first direction, and
• the fourth pixel includes a third focusing signal region configured to generate a third focusing signal and a fourth focusing signal region configured to generate a fourth focusing signal, wherein the third focusing signal region and the fourth focusing signal region independently generate the third focusing signal and the fourth focusing signal, and the third focusing signal region and the fourth focusing signal region are arranged to be adjacent to each other in the fourth pixel in a second direction that is different from the first direction.