Image sensor and forming method thereof

The invention discloses an image sensor and a forming method thereof, and the image sensor comprises a substrate which is provided with a light receiving surface and comprises a photosensitive pixel region, and the photosensitive pixel region comprises a plurality of pixel unit regions which are distributed in a matrix manner; the light transmitting layer is located on the light receiving surface and comprises a plurality of lens layers in one-to-one correspondence with the pixel unit areas, the lens layers cover the light receiving surfaces of the pixel unit areas, and the lens layers are used for achieving the light gathering effect in the pixel unit areas. The production cycle of the product is shortened, the production efficiency of the product is improved, and the production cost is reduced. 一种图像传感器及其形成方法，图像传感器包括：基底，基底具有受光面，且基底包括感光像素区，感光像素区包括多个呈矩阵分布的像素单元区；透光层，位于受光面上，透光层包括与像素单元区一一对应的多个透镜层，透镜层覆盖像素单元区的受光面，透镜层用于在像素单元区中起到聚光作用。本发明有利于减少产品的生产周期，提高产品生产效率，降低生产成本。