Invention Grant
- Patent Title: Dual axis internal optical beam tilt for eyepiece of an HMD
- Patent Title (中): HMD目镜的双轴内光束倾斜
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Application No.: US13714171Application Date: 2012-12-13
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Publication No.: US08867139B2Publication Date: 2014-10-21
- 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: G02B27/14
- IPC: G02B27/14 ; G02B27/01 ; G02B5/30

Abstract:
An eyepiece includes a display module for providing display light, a concave 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 with an offset from 45 degrees relative to the eye-ward side to cause the emission path to have a first oblique angle in a horizontal dimension relative to a first normal vector of the eye-ward side. The concave end reflector is tilted such that a second normal vector from a center point of the concave end reflector is obliquely angled relative to a top or bottom surface of the eyepiece to cause the emission path to have a second oblique angle in a vertical dimension relative to the first normal vector of the eye-ward side.
Public/Granted literature
- US20140153103A1 DUAL AXIS INTERNAL OPTICAL BEAM TILT FOR EYEPIECE OF AN HMD Public/Granted day:2014-06-05
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