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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10444419 B1

PDFFull Text
Date of Patent:
Oct. 15, 2019

Filed:

Aug. 22, 2017

Dithering methods and apparatus for wearable display device

Applicant:

Magic Leap, Inc., Plantation, FL (US);

Inventors:

Samarth Bhargava, Palo Alto, CA (US);

Robert D. TeKolste, Fort Lauderdale, FL (US);

Victor K. Liu, Mountain View, CA (US);

Christophe Peroz, San Francisco, CA (US);

Pierre St. Hilaire, Belmont, CA (US);

Evgeni Poliakov, San Mateo, CA (US);

Jason Schaefer, Coral Springs, FL (US);

Mauro Melli, San Leandro, CA (US);

Melanie West, San Francisco, CA (US);

Kang Luo, Austin, TX (US);

Vikramjit Singh, Pflugerville, TX (US);

Frank Y. Xu, Austin, TX (US);

Assignee:

Magic Leap, Inc., Plantation, FL (US);

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

John Bedtelyon

Int. Cl.
CPC ...
F21V 8/00 (2006.01); G02B 5/30 (2006.01); G02B 5/18 (2006.01); G02B 27/00 (2006.01); G02B 27/28 (2006.01); G02B 27/01 (2006.01); H04N 9/31 (2006.01); G02C 11/00 (2006.01); G02C 5/16 (2006.01); G06F 1/16 (2006.01); G06F 1/20 (2006.01); G09G 3/00 (2006.01); G02B 27/10 (2006.01); H05K 7/20 (2006.01); G06F 3/01 (2006.01); G06F 3/147 (2006.01); G09G 3/20 (2006.01); G02B 27/30 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0016 (2013.01); G02B 5/1823 (2013.01); G02B 5/1857 (2013.01); G02B 5/1866 (2013.01); G02B 5/1871 (2013.01); G02B 5/3025 (2013.01); G02B 6/005 (2013.01); G02B 6/0023 (2013.01); G02B 6/0035 (2013.01); G02B 6/0036 (2013.01); G02B 6/0038 (2013.01); G02B 6/0076 (2013.01); G02B 27/0018 (2013.01); G02B 27/0081 (2013.01); G02B 27/0172 (2013.01); G02B 27/0176 (2013.01); G02B 27/1086 (2013.01); G02B 27/283 (2013.01); G02C 5/16 (2013.01); G02C 11/10 (2013.01); G06F 1/163 (2013.01); G06F 1/203 (2013.01); G06F 1/206 (2013.01); G06F 3/011 (2013.01); G06F 3/013 (2013.01); G06F 3/147 (2013.01); G09G 3/001 (2013.01); G09G 3/002 (2013.01); G09G 3/2003 (2013.01); G09G 3/2044 (2013.01); H04N 9/3102 (2013.01); H04N 9/3164 (2013.01); H05K 7/20963 (2013.01); G02B 27/30 (2013.01); G02B 2027/012 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0114 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/0125 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/045 (2013.01); G09G 2340/0464 (2013.01); H04N 9/3144 (2013.01);
Abstract

A device includes an input coupling grating having a first grating structure characterized by a first set of grating parameters. The input coupling grating is configured to receive light from a light source. The device also includes an expansion grating having a second grating structure characterized by a second set of grating parameters varying in at least two dimensions. The second grating structure is configured to receive light from the input coupling grating. The device further includes an output coupling grating having a third grating structure characterized by a third set of grating parameters. The output coupling grating is configured to receive light from the expansion grating and to output light to a viewer.

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