Image sensor with auxiliary photosensitive region

An image sensor, comprising:

• at least one photosensitive unit, wherein the photosensitive unit comprises a main photosensitive region and an auxiliary photosensitive region arranged at a periphery of the main photosensitive region, and a photosensitive component content of the main photosensitive region is different from a photosensitive component content of the auxiliary photosensitive region, enabling a wavelength range of sensible light corresponding to the main photosensitive region to be different from a wavelength range of sensible light corresponding to the auxiliary photosensitive region, wherein the main photosensitive region and the auxiliary photosensitive region are sensitive to the same color of light;
• wherein both the main photosensitive region and the auxiliary photosensitive region comprise a photosensitive component, the auxiliary photosensitive region comprises at least one first auxiliary photosensitive region and at least one second auxiliary photosensitive region, both the first auxiliary photosensitive region and the second auxiliary photosensitive region comprise the photosensitive component, and a photosensitive component content of the first auxiliary photosensitive region is different from a photosensitive component content of the second auxiliary photosensitive region.