Theses and Dissertations

Date of Award

5-2021

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Electrical Engineering

First Advisor

Dr. Nantakan Wongkasem

Second Advisor

Dr. Heinrich D. Foltz

Third Advisor

Dr. Yong Zhou

Abstract

Lenses are important optical device having numerous applications in our day-to-day life. As the conventional lenses, we use concave or convex lenses. These lenses are made with natural materials and the image quality imperfect. Furthermore, they are bulky, and design is complex. Consequently, mass production is difficult.

The shapes of entrance and exit faces of lenses has impact on its imaging capability. The Lens material also play a vital role for reconstructing the image. Flat lenses can be considered as a good alternative of the conventional lenses. One of the advantages of this Flat lenses is that it can restore both the propagating and evanescent waves in the image plane. The conventional lenses only restore the information contained by the propagating waves and the evanescent waves that contains small subwavelength information of the object decays in the image plane. Flat Lenses are preferable in terms of image quality.

Comments

Copyright 2021 S M Zia Uddin. All Rights Reserved.

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