US 12,455,462 B2
Dynamic full three dimensional display
Yaakov Amitai, Rehovot (IL); Mori Amitai, Rehovot (IL); and Menachem Amitai, Rehovot (IL)
Assigned to OORYM OPTICS LTD., Rehovot (IL)
Filed by OORYM OPTICS LTD., Rehovot (IL)
Filed on Aug. 15, 2022, as Appl. No. 17/888,092.
Application 17/888,092 is a division of application No. 16/839,844, filed on Apr. 3, 2020, granted, now 11,467,418.
Application 16/839,844 is a continuation of application No. 15/999,301, granted, now 10,649,224, issued on May 12, 2020, previously published as PCT/IL2017/050193, filed on Feb. 15, 2017.
Claims priority of application No. 244180 (IL), filed on Feb. 18, 2016.
Prior Publication US 2022/0397768 A1, Dec. 15, 2022
Int. Cl. G02B 27/42 (2006.01); G02B 27/01 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/4205 (2013.01) [G02B 27/0172 (2013.01); G02B 27/4272 (2013.01); G02F 1/133504 (2013.01); G02F 1/133553 (2013.01); G02F 1/1336 (2013.01); G06F 3/013 (2013.01); G06F 3/018 (2013.01); G02B 2027/0174 (2013.01); G02F 1/133616 (2021.01)] 9 Claims
OG exemplary drawing
 
1. An optical display system, comprising:
a light source;
a control unit; and
at least one juxtaposed double grating element, including a first grating and a second grating having grating functions, spaced apart at a constant distance from each other, each of the two gratings having a central point and at least two edges and comprising at least one sequence of a plurality of lines,
wherein the second grating is different than the first grating, the spacing between the lines gradually changes as a function of the radial distance from the central point of the grating, the sequence of the plurality of lines of at least one of the gratings has a radial symmetry,
wherein the first grating diffracts a light wave from the light source towards the second grating and is further diffracted by the second grating as an output plane light wave in a given direction, the direction of the output plane light wave is dynamically and externally controlled by the control unit and can be deviated linearly along at least two different radial directions, and
wherein for a collimated light source and for each deviated direction, the direction of the output plane light wave is invariant with respect to the central point on a surface of the second grating.