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 an operation of the image sensor, and store and output a signal generated by the image sensor,
• wherein the image sensor comprises:
• a sensor substrate comprising a first photosensitive cell and a second photosensitive cell which are configured to sense light incident on the sensor substrate;
• a color separating lens array configured to change a phase of first wavelength light and a phase of second wavelength light different from each other such that the first wavelength light included in light incident on the color separating lens array travels to the first photosensitive cell and the second wavelength light included in the light incident on the color separating lens array travels to the second photosensitive cell;
• and
• a spectrum shaping layer comprising a plurality of nanostructures respectively having a first refractive index and a dielectric material provided between the plurality of nanostructures and respectively having a second refractive index, the spectrum shaping layer being provided between the sensor substrate and the color separating lens array and configured to shape a spectral profile of the light incident on the sensor substrate by reflecting and/or absorbing portion of light passing through the color separating lens array, and
• wherein the color separating lens array comprises a first region corresponding to the first photosensitive cell and a second region corresponding to the second photosensitive cell, each of the first region and the second region comprising at least one nanopost.

An image sensor comprising:

• a sensor substrate comprising a first photosensitive cell and a second photosensitive cell which are configured to sense light incident on the sensor substrate;
• a color separating lens array configured to change a phase of first wavelength light and a phase of second wavelength light different from each other such that the first wavelength light included in light incident on the color separating lens array travels to the first photosensitive cell and the second wavelength light included in the light incident on the color separating lens array travels to the second photosensitive cell;
• and
• a spectrum shaping layer comprising:
• a plurality of nanostructures respectively having a first refractive index;
• and
• a dielectric material provided between the plurality of nanostructures and having a second refractive index,
• wherein the spectrum shaping layer is provided between the sensor substrate and the color separating lens array and configured to shape a spectral profile of the light incident on the sensor substrate by reflecting and/or absorbing portion of light passing through the color separating lens array, and
• wherein the color separating lens array comprises a first region corresponding to the first photosensitive cell and a second region corresponding to the second photosensitive cell, each of the first region and the second region comprising at least one nanopost.