Global Patent Index - EP 2740004 B8

EP 2740004 B8 20171213 - METHOD AND APPARATUS FOR A NEAR-TO-EYE DISPLAY

Title (en)

METHOD AND APPARATUS FOR A NEAR-TO-EYE DISPLAY

Title (de)

VERFAHREN UND VORRICHTUNG FÜR AUGENNAHE ANZEIGE

Title (fr)

PROCÉDÉ ET APPAREIL PERMETTANT UN AFFICHAGE PROCHE DE L' IL

Publication

EP 2740004 B8 20171213 (EN)

Application

EP 12819922 A 20120711

Priority

  • US 201113196212 A 20110802
  • US 2012046306 W 20120711

Abstract (en)

[origin: US2013033756A1] An eyepiece for a head mounted display includes an illumination module, an end reflector, a viewing region, and a polarization rotator. The illumination module provides CGI light along a forward propagation path within the eyepiece. The end reflector is disposed at an opposite end of the eyepiece from the illumination module to reflect the CGI light back along a reverse propagation path within the eyepiece. The viewing is disposed between the illumination module and the end reflector and includes an out-coupling polarizing beam splitter (PBS). The out-coupling PBS passes the CGI light traveling along the forward propagation path and redirects the CGI light traveling along 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 between the out-coupling PBS and the end reflector.

IPC 8 full level

G02B 27/02 (2006.01); G02B 27/01 (2006.01)

CPC (source: EP US)

G02B 27/01 (2013.01 - US); G02B 27/0172 (2013.01 - EP US); G02B 27/0176 (2013.01 - EP); G02B 5/02 (2013.01 - EP); G02B 5/30 (2013.01 - EP); G02B 2027/0118 (2013.01 - EP); G02B 2027/0178 (2013.01 - EP)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

US 2013033756 A1 20130207; US 8767305 B2 20140701; CN 103718083 A 20140409; CN 103718083 B 20160504; EP 2740004 A1 20140611; EP 2740004 A4 20150401; EP 2740004 B1 20171025; EP 2740004 B8 20171213; EP 3290991 A1 20180307; EP 3290991 B1 20190619; WO 2013019371 A1 20130207; WO 2013019371 A8 20140130

DOCDB simple family (application)

US 201113196212 A 20110802; CN 201280038118 A 20120711; EP 12819922 A 20120711; EP 17191686 A 20120711; US 2012046306 W 20120711