公开(公告)号：US20240411138A1

公开(公告)日：2024-12-12

申请号：US18717960

申请日：2022-11-21

Applicant: GOOGLE LLC

Inventor： Daniel Adema ,  Syed Moez Haque ,  Thuy Hong Nguyen ,  Brian Watson Cranton ,  Lloyd Frederick Holland

IPC: G02B27/01

Abstract: The present disclosure describes tinting techniques in a lens stack assembly for a wearable head mounted display (WHMD). The lens stack assembly includes a waveguide disposed between two lenses, where the two lenses include tints to selectively reduce the amount of ambient light transmitted to the user while not reducing the amount of the display light in the WHMD. In addition, the tinting techniques described herein reduce or eliminate the generation of ghost images resulting from the reflection of outcoupled light from the waveguide away from the user back toward the user.