Title:
EYEPIECE FOR NEAR-TO-EYE DISPLAY WITH MULTI-REFLECTORS
Document Type and Number:
WIPO Patent Application WO/2013/012484
Kind Code:
A3
Abstract:
An eyepiece for a head mounted display includes an illumination module, an end reflector, a viewing region, and a polarization rotator. The illumination module includes an image source for launching computer generated image ("CGI") light along a forward propagating path. The end reflector is disposed at an opposite end of the eyepiece from the illumination module to reflect the CGI back along a reverse propagation path. The viewing region is disposed between the illumination module and the end reflector. The viewing region includes a polarizing beam splitter ("PBS) and non-polarizing beam splitter ("non-PBS") disposed between the PBS and the end reflector. The viewing region redirects the CGI light from the reverse propagation path out of an eye-ward side of the eyepiece. The polarization rotator is disposed in the forward and reverse propagation paths of the CGI light between the viewing region and the end reflector.
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Inventors:
MIAO XIAOYU (US)
AMIRPARVIZ BABAK (US)
AMIRPARVIZ BABAK (US)
Application Number:
PCT/US2012/041156
Publication Date:
March 21, 2013
Filing Date:
June 06, 2012
Export Citation:
Assignee:
GOOGLE INC (US)
MIAO XIAOYU (US)
AMIRPARVIZ BABAK (US)
MIAO XIAOYU (US)
AMIRPARVIZ BABAK (US)
International Classes:
G02B27/02
Foreign References:
| US20100157433A1 | 2010-06-24 | |||
| US5886822A | 1999-03-23 | |||
| JP2007156096A | 2007-06-21 | |||
| US20030165017A1 | 2003-09-04 |
Other References:
See also references of EP 2732328A4
Attorney, Agent or Firm:
VINCENT, Lester, J. et al. (Sokoloff Taylor & Zafman LLP,1279 Oakmead Parkwa, Sunnyvale CA, US)
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