The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2025
Filed:
Feb. 09, 2022
National Yang Ming Chiao Tung University, Hsinchu, TW;
Yu-Jen Wang, Taipei, TW;
Yi-Hsin Lin, Zhubei, TW;
NATIONAL YANG MING CHIAO TUNG UNIVERSITY, Hsinchu, TW;
Abstract
An optical system includes a pancake lens assembly which has a lens unit and a liquid crystal device. The lens unit includes a partially reflective mirror, a reflective polarizer, and a quarter waveplate disposed between the partially reflective mirror and the reflective polarizer. The liquid crystal device is disposed between the quarter waveplate and the reflective polarizer. When a light is introduced into the pancake lens assembly in a Z direction, an X-polarized light passes through the liquid crystal device two times and a Y-polarized light passes through the liquid crystal device one time.