1. A lens stack array, comprising: lens elements formed on substrates separated by spacers, where the lens elements, substrates and spacers are configured to form a plurality of optical channels; wherein at least one optical channel includes: at least one aperture; at least one spectral filter, where each spectral filter is configured to pass a specific spectral band of light; at least one quantum dot color filter positioned to receive the specific spectral band of light passed by the at least one spectral filter located within the optical channel, where the at least one quantum dot color filter shifts each incoming photon passed by the at least one spectral filter to a specific narrow band of output wavelengths; at least a first optical channel includes at least one spectral filter configured to pass a first spectral band of light; at least a second optical channel includes at least one spectral filter configured to pass a second spectral band of light; and at least one quantum dot color filter is located within each of the first and second optical channels and is positioned to receive a specific spectral band of light passed by the at least one spectral filter located within each optical channel, where the at least one quantum dot color filter in each optical channel is configured to emit a spectral band of light that is within the same spectral band in response to incident light passed by the different spectral filters in each optical channel.