Array cameras and array camera modules including spectral filters disposed outside of a constituent image sensor

An array camera module comprising:

• lens elements arranged to form a plurality of optical channels, each optical channel comprising a separate aperture, and thereby being configured to image a distinct view of a scene;
• a plurality of focal planes, where each focal plane comprises a plurality of rows of pixel stacks that also form a plurality of columns of pixel stacks, and where each focal plane does not include pixel stacks from another focal plane;
• at least one cover glass that is disposed immediately adjacent to at least one focal plane and thereby covers all of the pixel stacks within the at least one focal plane;
• and
• at least one spectral filter that is embedded within at least one cover glass;
• wherein:
• each optical channel is associated with a focal plane;
• each pairing of an optical channel and a corresponding focal plane defines a camera;
• the at least one cover glass is flat and uniformly thick;
• the at least one spectral filter filters all the light that impinges on all of the pixel stacks of at least one focal plane;
• and
• each pixel stack comprises a single microlens and a single photodetector, and each respective single microlens is configured to focus incident electromagnetic waves onto the corresponding single photodetector.