公开(公告)号：US20250138283A1

公开(公告)日：2025-05-01

申请号：US18402360

申请日：2024-01-02

Applicant: NATIONAL CENTRAL UNIVERSITY

Inventor： Ying-Shun SHIU ,  Guan-Wei HUANG ,  Jun-Yi YU ,  Wen-Hsin SUN ,  Wei-Chia SU ,  Wen-Kai LIN ,  Shao-Kui ZHOU ,  Yuan-Yan LIANG ,  Ching-Cherng SUN

IPC: G02B13/00 ,  G02B9/34

Abstract: A coupled lens structure for a mixed/augmented reality system includes: a lens tube; a first lens with a first aspherical light input surface coupled to a lens-tube light input surface; a second lens with a second spherical light input surface optically coupled to a first spherical light output surface of the first lens; a third lens with a third spherical light input surface optically coupled to a second aspherical light output surface of the second lens; and a fourth lens with a fourth spherical light input surface optically coupled to a third spherical light output surface of the third lens and a fourth spherical light output surface coupled to a lens-tube light output surface. The coupled lens structure has volume of 2.1-3 cc, a lens-tube outer diameter of 12-13.5 mm, and a full angle of view not greater than 30 degrees, featuring an effective reduction in volume and weight.