Solid-state color image sensor having an arrangement to compensate for dependence of light sensing characteristics upon color

摘要

A solid-state color image sensor includes a two-dimensional array of photo-to-electric conversion areas. A color separation filter has segments opposed to the photo-to-electric conversion areas respectively. The color separation filter segments have respective colors selected from among at least first and second predetermined colors. Micro-lenses operate for focusing portions of incident light containing image information on the photo-to-electric conversion areas via the color separation filter segments, respectively. The micro-lenses related to the color separation filter segments having the first predetermined color are different in characteristic from the micro-lenses related to the color separation filter segments having the second predetermined color. For example, the micro-lenses related to the color separation filter segments having the first predetermined color have a first predetermined curvature, and the micro-lenses related to the color separation filter segments having the second predetermined color have a second predetermined curvature different from the first predetermined curvature.