US 12,468,157 B2
Augmented reality apparatus and optical system therefor
Bing Xiao, Beijing (CN); Xiaobin Liang, Beijing (CN); and Chi Xu, Beijing (CN)
Assigned to MATRIXED REALITY TECHNOLOGY CO., LTD., Wuxi (CN)
Filed by MATRIXED REALITY TECHNOLOGY CO., LTD., Wuxi (CN)
Filed on Apr. 2, 2024, as Appl. No. 18/624,141.
Application 18/624,141 is a continuation of application No. 18/325,986, filed on May 30, 2023, granted, now 11,988,839.
Application 18/325,986 is a continuation of application No. 16/930,061, filed on Jul. 15, 2020, granted, now 11,693,244.
Application 16/930,061 is a continuation in part of application No. PCT/CN2019/074876, filed on Feb. 12, 2019.
Claims priority of application No. 201810146738.7 (CN), filed on Feb. 12, 2018; application No. 201810146751.2 (CN), filed on Feb. 12, 2018; application No. 201810146905.8 (CN), filed on Feb. 12, 2018; application No. 201810146912.8 (CN), filed on Feb. 12, 2018; application No. 201810146915.1 (CN), filed on Feb. 12, 2018; application No. 201810147325.0 (CN), filed on Feb. 12, 2018; application No. 201810147326.5 (CN), filed on Feb. 12, 2018; application No. 201810147328.4 (CN), filed on Feb. 12, 2018; application No. 201810147330.1 (CN), filed on Feb. 12, 2018; application No. 201810147332.0 (CN), filed on Feb. 12, 2018; and application No. 201810147336.9 (CN), filed on Feb. 12, 2018.
Prior Publication US 2024/0241384 A1, Jul. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01); G02B 1/11 (2015.01); G02B 27/09 (2006.01); G02B 27/12 (2006.01); G02B 27/14 (2006.01); G02B 27/28 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 27/017 (2013.01); G02B 1/11 (2013.01); G02B 27/0101 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/013 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0185 (2013.01); G02B 27/0955 (2013.01); G02B 27/123 (2013.01); G02B 27/142 (2013.01); G02B 27/145 (2013.01); G02B 27/281 (2013.01); G02B 27/283 (2013.01); G02B 27/286 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical system for an AR apparatus, comprising:
an image source controlled to emit light;
a lens for focusing emitting light;
a polarizer located between the image source and the lens;
a cubic beam splitter having a prism with a bevel constituting a beam-splitting side;
a semi-reflector located downstream of the cubic beam splitter;
a wave plate located between the cubic beam splitter and the semi-reflector; and
an additional wave plate and an additional polarizer which are located in this order distal to the semi-reflector;
wherein the additional wave plate and the additional polarizer are adhered together, and
wherein the semi-reflector is a curved semi-reflector and configured to be one of partly-cylindrical, partly-spherical, partly rotational-symmetric, freely curved, and the additional wave plate and the additional polarizer are in one of configurations including:
contours of the additional wave plate and the additional polarizer in a lateral direction substantially follow a curved shape of the semi-reflector,
contours of the additional wave plate and the additional polarizer in a longitudinal direction substantially perpendicular to the lateral direction substantially follow a curved shape of the semi-reflector, and
contours of the additional wave plate and the additional polarizer substantially follow a curved shape of the semi-reflector.