Invention Grant
- Patent Title: Dual axis internal optical beam tilt for eyepiece of an HMD
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Application No.: US14485414Application Date: 2014-09-12
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Publication No.: US09733477B2Publication Date: 2017-08-15
- Inventor: 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 ; G02B27/28 ; G02B5/30 ; G02B27/00

Abstract:
An eyepiece includes a first end for receiving display light, an end reflector, and a viewing region including a partially reflective surface to redirect at least a portion of the display light out of an eye-ward side of the eyepiece along an emission path. The partially reflective surface is obliquely angled to cause the emission path to have a first oblique angle in a first dimension relative to a first normal vector of the eye-ward side. The end reflector is tilted to cause the emission path to have a second oblique angle in a second dimension relative to the first normal vector of the eye-ward side. The first and second dimensions are orthogonal to each other.
Public/Granted literature
- US20150002941A1 DUAL AXIS INTERNAL OPTICAL BEAM TILT FOR EYEPIECE OF AN HMD Public/Granted day:2015-01-01
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