| 主权项 |
1. An image sensor, comprising:
a plurality of pixels arrayed in a two-dimensional plane containing a first direction and a second direction perpendicular to the first direction, wherein each of the plurality of pixels includes, arranged in a third direction perpendicular to the plane,
a microlens,a waveguide unit having a core and a cladding, the waveguide unit being capable of propagating light transmitted through the microlens, anda pair of photo diodes arrayed in the first direction, the pair of photo diodes being configured to carry out photoelectric conversion of light guided by the waveguide unit, wherein each of the pixels includes an absorption unit that is electrically independent, the absorption unit having an optical absorptance with respect to a light beam to be photoelectrically converted by the pair of photo diodes higher than an optical absorptance of the core and of the cladding, wherein the absorption unit is provided in the first direction of the core as viewed in the third direction, and wherein an optical distance between the absorption unit and an interface of the cladding on the side toward the microlens in the third direction is no greater than a wavelength of the light beam. |
