US 12,345,884 B2
Holographic image projection with holographic correction
Jamieson Christmas, Milton Keynes (GB); and Dackson Masiyano, Milton Keynes (GB)
Assigned to ENVISICS LTD, Milton Keynes (GB)
Filed by Envisics Ltd, Milton Keynes (GB)
Filed on May 23, 2024, as Appl. No. 18/672,419.
Application 18/672,419 is a continuation of application No. 17/367,703, filed on Jul. 6, 2021, granted, now 12,013,533.
Application 17/367,703 is a continuation of application No. 16/257,497, filed on Jan. 25, 2019, granted, now 11,054,643, issued on Jul. 6, 2021.
Application 16/257,497 is a continuation of application No. 15/683,443, filed on Aug. 22, 2017, granted, now 10,228,559, issued on Mar. 12, 2019.
Application 15/683,443 is a continuation of application No. 14/654,275, granted, now 9,766,456, issued on Sep. 19, 2017, previously published as PCT/GB2013/053403, filed on Dec. 20, 2013.
Claims priority of application No. 1223416 (GB), filed on Dec. 21, 2012.
Prior Publication US 2024/0310629 A1, Sep. 19, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01); G03H 1/08 (2006.01); G03H 1/16 (2006.01); G03H 1/22 (2006.01); G03H 1/30 (2006.01); G06T 5/20 (2006.01); G06T 11/60 (2006.01); H04N 9/31 (2006.01)
CPC G02B 27/0103 (2013.01) [G03H 1/0808 (2013.01); G03H 1/0841 (2013.01); G03H 1/16 (2013.01); G03H 1/2205 (2013.01); G03H 1/2294 (2013.01); G06T 5/20 (2013.01); G06T 11/60 (2013.01); H04N 9/3185 (2013.01); G02B 2027/0107 (2013.01); G02B 2027/0109 (2013.01); G02B 2027/011 (2013.01); G02B 2027/013 (2013.01); G02B 2027/014 (2013.01); G03H 2001/0816 (2013.01); G03H 2001/0825 (2013.01); G03H 2001/0833 (2013.01); G03H 2001/085 (2013.01); G03H 2001/221 (2013.01); G03H 2001/2218 (2013.01); G03H 2001/2242 (2013.01); G03H 2001/2271 (2013.01); G03H 2001/2284 (2013.01); G03H 2001/306 (2013.01); G03H 2223/14 (2013.01); G03H 2225/32 (2013.01); G03H 2225/60 (2013.01); G03H 2225/61 (2013.01); G03H 2226/05 (2013.01); G06T 2207/10016 (2013.01); G06T 2207/10024 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of projection comprising:
providing first holographic data comprising hologram domain data representative of a display image and a first lensing function; and
providing a first spatially modulated light beam to a first viewing location by a method comprising
spatially modulating light with the first holographic data to form the first spatially modulated light beam; and
redirecting the first spatially modulated light beam using an optical combiner having
a first region having a first local curvature and
a second region having a second local curvature, the second local curvature being different from the first local curvature,
the redirecting being performed by illuminating the first region of the optical combiner with the first spatially modulated beam, the optical combiner redirecting the first spatially modulated light beam to the first viewing location to provide a first image corresponding to the display image at the first viewing location,
wherein the first lensing function compensates at the first viewing location for the first local curvature of the first region of the optical combiner.