公开(公告)号：US10827164B2

公开(公告)日：2020-11-03

申请号：US16144025

申请日：2018-09-27

Applicant: Google LLC

Inventor： John D. Perreault ,  Jonathan Huang ,  Patrick Llull ,  Adrian Wong ,  Justin Legakis

IPC: H04N13/332 ,  H01L27/32 ,  H04N13/167 ,  G02B27/01

Abstract: A head-mounted display (HMD) device includes one or more active shutters coupled to a synchronization module. The synchronization module includes a first photodiode configured to detect a synchronization signal for controlling operation of the one or more active shutters. The one or more active shutters are configured to alternate between an open state to pass light and a closed state to block light for reducing a duty cycle of a display screen of a mobile device positioned within the HMD device. The synchronization signal provides a timing to block light from the display screen for a display update duration corresponding to a subset of pixels of the display screen.