Invention Grant
- Patent Title: Eyepiece with switchable reflector for head wearable display
- Patent Title (中): 带可切换反射镜的目镜,用于头戴式显示屏
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Application No.: US14209995Application Date: 2014-03-13
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Publication No.: US09395544B2Publication Date: 2016-07-19
- Inventor: Amber M. Luttmann , Ozan Cakmakci , Anurag Gupta
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: G02B27/01
- IPC: G02B27/01 ; G02F1/137

Abstract:
An eyepiece for a head wearable display includes a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region. The light guide component includes an input surface to receive the display light into the light guide component, an eye-ward facing side, a world facing side, a total internal reflection (“TIR”) portion disposed proximal to the input surface to guide the display light received through the input surface using TIR, and a partially reflective portion including a partially reflective element disposed over the eye-ward facing side and a switchable reflector disposed over the world facing side. The partially reflective portion is disposed to receive the display light from the TIR portion and to guide the display light via reflections off of the partially reflective element and the switchable reflector.
Public/Granted literature
- US20150260992A1 EYEPIECE WITH SWITCHABLE REFLECTOR FOR HEAD WEARABLE DISPLAY Public/Granted day:2015-09-17
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