US 12,455,452 B2
Highly efficient compact head-mounted display system
Yaakov Amitai, Rehovot (IL); and Menachem Amitai, Rehovot (IL)
Assigned to OORYM OPTICS LTD., Rehovot (IL)
Filed by OORYM OPTICS LTD., Rehovot (IL)
Filed on Nov. 8, 2023, as Appl. No. 18/504,560.
Application 18/504,560 is a continuation of application No. 17/703,593, filed on Mar. 24, 2022, granted, now 11,852,826.
Application 17/703,593 is a continuation of application No. 16/753,170, granted, now 11,340,458, issued on May 24, 2022, previously published as PCT/IL2018/051105, filed on Oct. 15, 2018.
Claims priority of application No. 255049 (IL), filed on Oct. 16, 2017; and application No. 257039 (IL), filed on Jan. 21, 2018.
Prior Publication US 2024/0077734 A1, Mar. 7, 2024
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01); G02B 25/00 (2006.01); G02B 27/10 (2006.01); G02B 27/14 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/0011 (2013.01); G02B 6/0031 (2013.01); G02B 6/0033 (2013.01); G02B 6/0055 (2013.01); G02B 25/001 (2013.01); G02B 27/01 (2013.01); G02B 27/0101 (2013.01); G02B 27/1066 (2013.01); G02B 27/144 (2013.01); G02B 27/145 (2013.01); G02B 27/148 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0125 (2013.01); G02B 2027/013 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical device, comprising:
an input aperture;
an output aperture;
at least a first and a second light-transmitting substrate, having refractive indices and each having at least two parallel major surfaces and edges;
a first and a second coupling-in element for coupling light waves characterized by an angular range into the first and the second light-transmitting substrate, respectively, to effect total internal reflection;
at least a first and a second reflecting surface located between the two major surfaces of the first light-transmitting substrate for coupling light waves out of the first light-transmitting substrate, and
at least a third and a fourth reflecting surface located between the two major surfaces of the second light-transmitting substrate for coupling light waves out of the second light-transmitting substrate,
wherein the angular range of the light waves incident on the first coupling-in element comprising at least a first, a second, and a third angular segment, the first and the third reflecting surfaces are angular sensitive surfaces, the first reflecting surface is substantially total reflective for the first angular segment and substantially transparent for the second and the third angular segments, the third reflecting surface is substantially total reflective for the first and the second angular segments and substantially transparent for the third angular segment, and the second and the fourth reflecting surfaces are substantially total reflective for the second and the third angular segments.