Invention Grant
- Patent Title: Head-up display system having a holographic panel comprising a first layer and a second layer
-
Application No.: US17700916Application Date: 2022-03-22
-
Publication No.: US12202336B2Publication Date: 2025-01-21
- Inventor: Kai-Han Chang , Thomas A. Seder
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Vivacqua Crane, PLLC
- Main IPC: B60K35/00
- IPC: B60K35/00 ; B60K35/22 ; B60K35/23 ; B60K35/60

Abstract:
A head-up display system of a vehicle visually transmits information to eyes of a first occupant and eyes of a second occupant. The system includes an illumination device emitting first and second display lights having first and second polarizations, respectively. The system includes a windshield and a holographic panel including first and second layers. The display lights emit toward the holographic panel at an entrance angle relative to an axis normal to the holographic panel. The first layer diffracts the first display light having the first polarization in a first exit direction at a first exit angle relative to the axis toward the eyes of the first occupant. The second layer diffracts the second display light having the second polarization in a second exit direction at a second exit angle relative to the axis, and different than the first exit angle, toward the eyes of the second occupant.
Public/Granted literature
- US20230302899A1 HEAD-UP DISPLAY SYSTEM HAVING A HOLOGRAPHIC PANEL COMPRISING A FIRST LAYER AND A SECOND LAYER Public/Granted day:2023-09-28
Information query