Monday, May 2025

02:40 PM - 04:10 PM

Room: LL21DEF Locate

Session: AR/VR/MR/XR Technologies and User Experience

Designing Digital Diffractive Optics for Displays and Sensing

Description:

Digital diffractive optics are increasingly being integrated into consumer products. Applications such as anti-counterfeiting holograms on credit cards and barcode scanners are used daily. In parallel, new applications, including augmented-reality waveguide glasses, depth cameras, optical tweezers, and chromatic dispersion compensation, are becoming more common. In this seminar, two exemplary applications of digital diffractive optics are explored: structured illumination for depth sensing and augmented-reality waveguides. First, specifications for these applications are defined, including field of view, efficiency, and cost. Second, a “first-order design” is conducted, considering factors such as the amplitude of the orders and how multiple elements can work together. Third, detailed descriptions of the computational techniques used for designing and optimizing the profiles of digital diffractive optics, including the Gerchberg-Saxton algorithm and the Rigorous Coupled Wave Analysis (RCWA), follow. Finally, perspectives related to manufacturing are discussed.

Video Presentation:

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