Session Index

S10. Metaverse Photonics

Metaverse Photonics II
Friday, Dec. 1, 2023  15:15-17:30
Presider: Prof. Yu-Chieh Cheng (National Taipei University of Technology, Taiwan) Prof. Chun-Ta Wang (National Sun Yat-sen University, Taiwan)
Room: 92383 (3F)
15:15 - 15:45
Manuscript ID.  0648
Paper No.  2023-FRI-S1002-I001
Invited Speaker:
Maria Pace
Optics and the Metaverse
Maria Pace, XR Hardware, Business Strategy and Partnerships, Google (USA)

15:45 - 16:00
Manuscript ID.  0861
Paper No.  2023-FRI-S1002-O001
Chien-Ying Chen Analysis of Holographic Optical Element Based on Wave Optic
Chien-Ying Chen, Yeh-Wei Yu, Tsung-Hsun Yang, Ching-Cherng Sun, Chih-Hung Chen, Chih-Yuan Cheng, National Central University (Taiwan)

Volume holographic optical elements (VHOE) as lightguide components for near-eye displays (NED) can control the propagation direction of input light fields. We establish an optical model to simulate inputting a two-dimensional image, and after passing through the lightguide structure, the angular spectrum distribution of the two-dimensional image can be output. In addition to the information regarding the angular spectrum distribution of the image, the distribution of input light with different wavelengths can also be analyzed simultaneously.

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16:00 - 16:15
Manuscript ID.  0715
Paper No.  2023-FRI-S1002-O002
Wen-Kai Lin Two-dimensional Exit Pupil Expander in Near-eye Display Light-guide Based on Volume Holographic Gratings
Wen-Kai Lin, Department of Optics and Photonics (Taiwan); Shao-Kui Zhou, Graduate Institute of Photonics (Taiwan), College of Photonics (Taiwan); Wen-Teng Liang, Chih-Wei Chen, Department of Physics (Taiwan); Ching-Cherng Sun, Department of Optics and Photonics (Taiwan); Wei-Chia Su, Graduate Institute of Photonics (Taiwan)

This study proposed a 2-D EPE light-guide design based on VHOEs. Compare to traditional structure, the engineering difficulty of the angular multiplexing process is easier. Finally, the light-guide achieves a FOV of 27.2 degrees when used with the LED light source.

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16:15 - 16:30
Manuscript ID.  0166
Paper No.  2023-FRI-S1002-O003
Chia Chun Hu LSR light guide design for compact automotive high beam headlights
Chia Chun Hu, Yang Jun Zheng, Yu Fu Hsu, Zhi Ting Ye, National Chung Cheng University (Taiwan)

Currently, automotive high-beam headlights commonly use designs based on reflectors and fisheye lens refraction. It requires a larger fixture size, leading to excessive weight, and suffers from issues such as poor optical efficiency. We propose a Refracting type LSR design for compact automotive High-Beam headlights, utilizing high-power LEDs combined with Liquid Silicone Rubber (LSR) light guid and Aspheric Biconvex lenses to complete the High-Beam headlights module for automotive. On the ECE R112B surface has been improved to 50.9%. Imax is 81506.3 cd, and the H-V point is 80075.1 cd. Achieving lightweight and miniaturization while complying with ECE R112B.

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16:30 - 16:45
Manuscript ID.  0833
Paper No.  2023-FRI-S1002-O004
Guan-Yu Ji Light Field Near Eye Display Base On View-Angle Extraction
Guan-Yu Ji, Yu-Chien Wang, Yeh-Wei Yu, Tsung-Hsun Yang, Ching-Cherng Sun, National Central University (Taiwan)

This study combines angle multiplexing with near-eye display technology and light field design to address the conflict of visual accommodation and convergence. By recording the wavefront of a micro-lens system with different focal lengths on a holographic plate, the effects of angular magnification and the Bragg condition of volume holography are used to select specific sub-scenes.

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16:45 - 17:00
Manuscript ID.  1021
Paper No.  2023-FRI-S1002-O005
Chiao-Chih Lin Feasible Nanolasers for the Metaverse
Chiao-Chih Lin, Yu-Hsun Chou, National Cheng Kung University (Taiwan)

In recent times, the metaverse has been rapidly developing, aiming to create a cyberpunk-inspired 3D virtual world network with a strong focus on social connections. Current limitations stem from hardware and sensor constraints for real-time interaction. In this article, we introduce a novel nanolaser technology capable of miniaturizing laser components below the diffraction limit, significantly increasing the density of laser units. By enhancing the density of laser arrays, they have the potential to be used in laser displays, enabling a more realistic and personalized modeling of the virtual world, ultimately delivering an enhanced user experience.

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17:00 - 17:15
Manuscript ID.  0717
Paper No.  2023-FRI-S1002-O006
Tung-Hon Yiu Optimized Analysis of Interval Time for Laser Ablation during the process of CMOS-MEMS Fabrication
Chien-Chung Tsai, Tung-Hon Yiu, Minghsin University of Science and Technology (Taiwan)

The study uncovers significant insights into the impact of interval time on laser ablation processes. Remarkably, the baseline of interval time(bit)/√2 group demonstrates higher mean laser ablation quality values, reb, than the bit and bit/∜2 group, despite the same energy levels. Notably, a striking peak mean reb occurs at 70.7 seconds interval time and 0.378 mJ energy level. Through k-means learning, k is 5, the representative equation emerges as the superior regression mode for fitting the cluster points. An impressive coefficient of determination, R2, value of 0.9368. Furthermore, a distinctive trend reveals a decrease in Δreb with rising energy levels.

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17:15 - 17:30
Manuscript ID.  0882
Paper No.  2023-FRI-S1002-O007
Ming-Wei Lin Eye Tracking Through Lens-Array and Light Guide
Ming-Wei Lin, Guan-Yu Zhu, Yeh-Wei Yu, Tsung-Hsun Yang, Ching-Cherng Sun, National Central University (Taiwan)

This paper presents a machine learning-based eye-tracking model for head-mounted light field displays. Using a camera to capture visible light RGB images, the model predicts gaze points from human eye inputs through a neural network. This work addresses eyetracking within light field applications.

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