Image sensor and electronic apparatus including the image sensor

An image sensor comprising:

• a sensor substrate comprising a plurality of pixels configured to sense incident light;
• a nano-optical micro-lens array comprising a plurality of nano-optical micro-lenses respectively corresponding to the plurality of pixels;
• and
• a color filter array disposed between the sensor substrate and the nano-optical micro-lens array and comprising a plurality of color filters,
• wherein each of the plurality of nano-optical micro-lenses comprises a plurality of nanostructures to condense the incident light onto a corresponding pixel,
• when the plurality of nanostructures are arranged in a form of an N×N matrix on a two-dimensional plane, in the nano-optical micro-lens disposed at a center of the nano-optical micro-lens array, the plurality of nanostructures are absent from four positions of (1, 1), (1, N), (N, 1), and (N, N) and are disposed at remaining N2−4 positions, and
• wherein N is an integer that is greater than or equal to 3.

An image sensor comprising:

• a sensor substrate comprising a plurality of pixels configured to sense incident light;
• a nano-optical micro-lens array comprising a plurality of nano-optical micro-lenses respectively corresponding to the plurality of pixels;
• and
• a color filter array disposed between the sensor substrate and the nano-optical micro-lens array and comprising a plurality of color filters,
• wherein each of the plurality of nano-optical micro-lenses comprises a plurality of nanostructures to condense the incident light onto a corresponding pixel, and
• when viewed in a cross-section of the nano-optical micro-lens array, a fill factor denotes a ratio of an area of the nanostructures arranged within a reference circle among the plurality of nanostructures included in one of the plurality of nano-optical micro-lenses, and the reference circle has a pixel size corresponding to the one nano-optical micro-lens as a diameter, the fill factor is greater than or equal to 95%,
• wherein the plurality of nano-optical micro lenses comprise
• a first nano-optical micro-lens facing a green filter;
• a second nano-optical micro-lens facing a blue filter;
• and
• a third nano-optical micro-lens facing a red filter, and
• wherein a fill factor of the second nano-optical micro-lens is less than a fill factor of the first nano-optical micro-lens or the third nano-optical micro-lens.