CPC G02B 3/0056 (2013.01) [G02B 3/0043 (2013.01); H04N 9/64 (2013.01); H04N 23/84 (2023.01)] | 20 Claims |
1. An image sensor comprising:
a sensor substrate comprising a plurality of first pixels configured to sense light of a first wavelength and a plurality of second pixels configured to sense light of a second wavelength different from the first wavelength; and
a color separating lens array comprising a plurality of first pixel corresponding regions respectively corresponding to the plurality of first pixels and a plurality of second pixel corresponding regions respectively corresponding to the plurality of second pixels,
wherein the plurality of first pixel corresponding regions are configured to change a phase of the light of the first wavelength and condense the light of the first wavelength onto each of the plurality of first pixels, and the plurality of second pixel corresponding regions are configured to change a phase of the light of the second wavelength and condense the light of the second wavelength onto each of the plurality of second pixels,
each of the plurality of first pixel corresponding regions and the plurality of second pixel corresponding regions comprises a plurality of nanoposts, and
at least one of a shape, a width, and an arrangement of the plurality of nanoposts of the plurality of first pixel corresponding regions is set according to an azimuth angle of the plurality of nanoposts in a peripheral portion surrounding a central portion of the color separating lens array,
wherein in area having a same chief ray angle and different azimuth angles, the plurality of nanoposts in the plurality of first pixel corresponding regions have different shapes, widths, or arrangements.
|