A polygon geometry type 2D grating structure for diffractive wave-guide display

Sen Ma; Xiaoming Guo; Qiang Song; Guobin Ma

doi:10.1117/12.2642010

19 December 2022 A polygon geometry type 2D grating structure for diffractive wave-guide display

Sen Ma, Xiaoming Guo, Qiang Song, Guobin Ma

Proceedings Volume 12318, Holography, Diffractive Optics, and Applications XII; 123180K (2022) https://doi.org/10.1117/12.2642010
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

Augmented reality(AR) glasses are smart wearing devices which is promising to be the next generation computing platform. The most important components in AR glasses is the near eye display module, which can be built dependent on different optics structures, for example, free-form optics, bird-bath and light or wave-guide. The diffractive wave-guide makes it possible to be a colorful near-eye display with high transparency and ultra-small form factor. Compared with other structures, the two-dimensional diffraction grating wave-guide is able to provide larger field of view with certain area, because it can expand and out-couple the light in the same region. To ensure the uniformity of lightness, it requires high flexibility of control on diffraction energy distribution. In this work a new 2D structure is proved as effective and efficient to concentrate light on the desired diffraction orders under different condition. The new structure was optimized by using Rigorous Coupled Wave Analysis (RCWA) method. The wave-guide model based on this structure had been simulated by VirtualLab software as a benchmark. The simulation results demonstrate that the uniformity of eye box and field of view is good enough for human perception.

Conference Presentation

Citation Download Citation

Sen Ma, Xiaoming Guo, Qiang Song, and Guobin Ma "A polygon geometry type 2D grating structure for diffractive wave-guide display", Proc. SPIE 12318, Holography, Diffractive Optics, and Applications XII, 123180K (19 December 2022); https://doi.org/10.1117/12.2642010

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available