Textbook in PDF format Elementary Fourier Optics for Science and Engineering Students introduces the principles of Fourier optics, emphasizing their foundational role in modern optical systems. Designed for undergraduates and early graduates in Physics, Mathematics, or Engineering, this book describes how wave propagation, diffraction, and linear systems theory unite under the Fourier framework to explain phenomena like image formation, holography, and optical signal processing. Important concepts as convolution, cross-correlation, transfer function and their relationship with image resolution are also included. Between the key features of the books are a progressive learning path, visual explanations, use of a specialized program for graphic Fourier Transform implementation, chapter abstracts, solved and non-solved exercises, and a list of relevant bibliography