High‐efficiency switchable optical elements for advanced head‐up displays

Abstract

The Pancharatnam‐Berry optical elements (PBOEs) are utilized to enhance the performance of head‐up displays (HUDs). The Pancharatnam‐Berry lenses (PBLs) provide varifocal functionality and compensate chromatic aberrations, while the Pancharatnam‐Berry deflectors (PBDs) can function as optical combiners and waveguide couplers. Moreover, the Rigorous coupled wave analysis (RCWA) based on the scattering matrix is developed and applied in the structure optimization of PBOEs for HUD applications.

UCF Continues its Odyssey with Optics

“…FOR THE FOURTH CONSECUTIVE YEAR, THE JOURNAL OF the Society for Information Display (JSID) has awarded its Outstanding Student Paper prize to researchers from CREOL, The College of Optics and Photonics at the University of Central Florida. Tao Zhan, a Ph.D. candidate set to earn his degree next spring, and Yun‐Han Lee, who recently graduated from the program and is a research scientist at Facebook Reality Labs, earned the honor for their work on “High‐Efficiency Switchable Optical Elements for Advanced Head‐Up Displays.” 4 The paper was supported by CREOL students Jianghao Xiong, Guanjun Tan, and Kun Yin, and Goertek engineers Jilin Yang and Sheng Liu, as well as professor Shin‐Tson Wu.…”

“…Tao Zhan, a Ph.D. candidate set to earn his degree next spring, and Yun-Han Lee, who recently graduated from the program and is a research scientist at Facebook Reality Labs, earned the honor for their work on "High-Efficiency Switchable Optical Elements for Advanced Head-Up Displays." 4 The paper was supported by CREOL students Jianghao Xiong, Guanjun Tan, and Kun Yin, and Goertek engineers Jilin Yang and Sheng Liu, as well as professor Shin-Tson Wu.…”

Multifocal displays: review and prospect

“…Optical elements with polarization-dependent focal lengths can offer the same features as the systems comprising polarization-dependent optical distances, yet usually with a compact size. Figure 9 illustrates the optical behavior of several special optical lenses with polarization-dependent focal length, including anisotropic crystal lenses [72], LC Fresnel lenses [73][74][75][76], Pancharatnam-Berry phase lenses (PBLs) [77][78][79][80] and CLC lenses [81]. Even though only part of them has been implemented to enable a multifocal display, the others also hold great potential for this application.…”

Liquid Crystal Based Head-Up Display with Electrically Controlled Contrast Ratio

“…By appropriately choosing the image source location and the focal length of the GP LC lens, the virtual information can be magnified by the system. The diffraction efficiency through the double passage is approximately sin 4 (Γ/2).…”

“…Wei et al proposed a HUD with superior optical performance using three off-axis freeform mirrors [3]. Zhan et al used GP elements to enhance the performance of HUDs in many aspects [4].…”