Curious... If the Fourier transform can be 'calculated' by photons passing through an optical lens, has anyone ever produced a component that could capture the

Curious... If the Fourier transform can be 'calculated' by photons passing through an optical lens, has anyone ever produced a component that could capture the computation numerically? I.e., some sort of capsule/chip with: * A digital-to-analog converter with pixel array on one end * A lens in the center * A sensor array with an analog-to-digital converter on the other end