Design and Manufacture of 30-Degree Projection Lens for Augmented Reality Waveguide

A projection lens with a 30-degree field of view is developed for use in augmented reality (AR) glasses, including a waveguide combiner designed for a 0.35-inch LCoS panel. The entrance pupil diameter of the lens is 14 mm and the lens has an effective focal length of 16.443 mm; an F-number of 1.175....

Full description

Saved in:
Bibliographic Details
Published in:Micromachines (Basel) 2024-09, Vol.15 (10), p.1198
Main Authors: Sun, Wen-Shing, Hsu, Ying-Shun, Tien, Chuen-Lin, Lin, Wen-Kai, Su, Yi-Lun, Yu, Jun-Yi, Zhou, Shao-Kui, Liang, Yuan-Yan, Tsai, Wan-Pin, Sun, Chi, Lee, Tsung-Xian, Su, Wei-Chia, Lin, Shiuan-Huei, Sun, Ching-Cherng
Format: Article
Language:English
Subjects:
Angular resolution
Augmented Reality
Design
Image quality
LCoS pane
Lens design
Lenses
Light
magnifying glass
Pixels
projection lens
Sensors
waveguide
Waveguides
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A projection lens with a 30-degree field of view is developed for use in augmented reality (AR) glasses, including a waveguide combiner designed for a 0.35-inch LCoS panel. The entrance pupil diameter of the lens is 14 mm and the lens has an effective focal length of 16.443 mm; an F-number of 1.175. This paper has four key issues: optical projection lens design, lens manufacturing and assembly tolerance analysis, projection lens resolution testing, and AR glasses system resolution testing of panel images projected by the projection lens. After lens manufacture, the lens was tested, achieving a central field image quality of 57 cycles/mm, an angular resolution of 33 pixels per degree (PPD), a 0.7 field image quality of 40.3 cycles/mm, and an angular resolution of 23 pixels per degree (PPD). Imaging performance testing based on a diffraction-type waveguide shows a resolution of 57 cycles/mm in the center area and an angular resolution of 33 PPD.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi15101198