US 11,810,534 B1
Distortion control in displays with optical coupling layers
Yi Qiao, San Jose, CA (US); Jean-Pierre S. Guillou, Los Gatos, CA (US); Yingying Tang, Sunnyvale, CA (US); Michael J. Brown, Campbell, CA (US); Paul C. Kelley, San Francisco, CA (US); Tyler R. Kakuda, Stockton, CA (US); Hao Dong, Santa Clara, CA (US); Ying-Chih Wang, Sunnyvale, CA (US); Chaohao Wang, Sunnyvale, CA (US); Shaorui Yang, Milpitas, CA (US); and Wei H. Yao, Palo Alto, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 10, 2019, as Appl. No. 16/566,530.
Claims priority of provisional application 62/731,468, filed on Sep. 14, 2018.
Int. Cl. G09G 5/37 (2006.01); G06T 5/00 (2006.01); G09G 3/3208 (2016.01); G06T 1/20 (2006.01); G06T 7/70 (2017.01); G09G 5/36 (2006.01); G02B 6/06 (2006.01)
CPC G09G 5/37 (2013.01) [G06T 1/20 (2013.01); G06T 5/006 (2013.01); G06T 7/70 (2017.01); G09G 3/3208 (2013.01); G09G 5/363 (2013.01); G02B 6/06 (2013.01); G09G 2320/0646 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method of measuring distortion in a display with a display layer that includes an array of light-emitting pixels and an optical coupling layer that guides light from an input surface that is adjacent to the array of light-emitting pixels to an output surface, the method comprising:
displaying a target image using the array of light-emitting pixels;
with a camera module that includes an image sensor and a telecentric lens, capturing an image of the target image on the output surface of the optical coupling layer; and
for each one of a plurality of the light-emitting pixels, determining a displacement between a first location of the respective light-emitting pixel and a second location where light from that light-emitting pixel is output from the output surface.