Enhancing the virtual reality optical efficiency via emission cone optimization of the display panel
Year: 2025
Type: article
Abstract: The pancake lens, also referred to as a polarization-based catadioptric lens, is commonly employed as the imaging lens in virtual reality (VR) headsets due to its compact design and superior image quality. However, the pancake lens significantly reduces the optical efficiency to about 12.5% if the incident light is unpolarized, primarily due to the use of a half-mirror. To boost system efficiency, we analyze how the display panel's emission cone affects optical efficiency. By incorporating brightness enhancement films (BEFs) to tailor the angular distribution of the emitted light, the optical efficiency can be improved by 65.2%.
Source: Optics Express
DOI: 10.1364/oe.561665
Authors: Zhenyi Luo, Yefu Zhang, Yuqiang Ding, Shin-Tson Wu
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W4409210850