Evaluating an AR display employing laser beam scanner with waveguide combiner against the IEC 60825-1:2014 standard

Adarsh S. Prasad; Louahab Noui; Manuel Dorfmeister; Franz Maier; Zhe Chen; Faraj Nassar; Vinicius Esteves da Costa; Gregor Schestak; Jörg Reitterer

doi:10.1117/12.2655110

16 March 2023 Evaluating an AR display employing laser beam scanner with waveguide combiner against the IEC 60825-1:2014 standard

Adarsh S. Prasad, Louahab Noui, Manuel Dorfmeister, Franz Maier, Zhe Chen, Faraj Nassar, Vinicius Esteves da Costa, Gregor Schestak, Jörg Reitterer

Author Affiliations +

Proceedings Volume 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV; 124490G (2023) https://doi.org/10.1117/12.2655110
Event: SPIE AR | VR | MR, 2023, San Francisco, California, United States

Abstract

Realization of augmented reality (AR) solutions is key towards the much-needed integration of digital content into the real world. This seamless integration of digital content with the real world in AR devices is achieved by displaying the information using a suitable projector in the field-of-view (FOV) of the user. One of the most practical solutions to realize this is a laser beam scanner (LBS) projector combined with a diffractive optical waveguide. Features such as a small form factor, high brightness, large color gamut, and low power-consumption make LBS a popular choice as the light engine for the emerging consumer market for AR displays where the primary focus is on obtaining a stylish wearable rather than an unwieldly head mounted device. As should be the case for any AR/VR/MR display, LBS plus waveguide solution must be evaluated against the IEC 60825- 1:2014 standard for a typical use case. In this manuscript, we will first describe a typical AR solution, a TriLite Trixel® 3 LBS plus a waveguide combiner. We will discuss the operating principle of such a device. Based on that we shall highlight stepwise the key considerations in such a system for ensuring a Class 1 operation in a typical AR use case as per the IEC 60825-1:2014 requirements.

Conference Presentation

Citation Download Citation

Adarsh S. Prasad, Louahab Noui, Manuel Dorfmeister, Franz Maier, Zhe Chen, Faraj Nassar, Vinicius Esteves da Costa, Gregor Schestak, and Jörg Reitterer "Evaluating an AR display employing laser beam scanner with waveguide combiner against the IEC 60825-1:2014 standard", Proc. SPIE 12449, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) IV, 124490G (16 March 2023); https://doi.org/10.1117/12.2655110

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