CONDENSING ELEMENT, SOLID-STATE IMAGING DEVICE AND METHOD FOR FABRICATING THE SAME

摘要

A high sensitivity solid-state imaging device applicable even to an optical system of short focal length (large incident angle ?). Each element (size?2.8 mm) comprises a distributed refractive index lens (1), a color filter (2) for G, Al wiring (3), a signal transmitting section (4), a planarization layer (5), a light receiving element (Si photodiode) (6), and an Si substrate (7). A concentric circular structure of the distributed refractive index lens is composed of four kinds of material of different refractive index, i.e. TiO