公开(公告)号：US20250164781A1

公开(公告)日：2025-05-22

申请号：US18840011

申请日：2022-02-21

Applicant: LG ELECTRONICS INC.

Inventor： Youngjin KIM ,  Jaehyuk LIM ,  Yunyoung KWON ,  Kyoungil LEE

IPC: G02B27/01

Abstract: Discussed is a head-up display including, a housing formed with an inner space inside and disposed below a windshield, an imaging device accommodated in the inner space and emitting a first linearly polarized light polarized in a first direction, a polarization mirror having a transmission area through which the first linearly polarized light is transmitted and a polarization reflection area through which a second linearly polarized light polarized in a second direction perpendicular to the first direction is reflected, and a phase retardation mirror spaced apart from the polarization mirror and phase-converting the first linearly polarized light transmitted through the transmission area into the second linearly polarized light, wherein at least a portion of the polarization mirror is located between the imaging device and the phase retardation mirror, and wherein a first surface and a second surface of the polarization mirror are not parallel.