US 12,436,400 B2
Optical system
Yochay Danziger, Kfar Vradim (IL); Shimon Grabarnik, Rehovot (IL); Ronen Chriki, Lod (IL); Eitan Ronen, Rehovot (IL); and Elad Sharlin, Mishmar David (IL)
Assigned to Lumus Ltd., Ness Ziona (IL)
Filed by Lumus Ltd., Ness Ziona (IL)
Filed on Jan. 26, 2023, as Appl. No. 18/101,607.
Application 18/101,607 is a continuation of application No. 17/640,004, abandoned, previously published as PCT/IL2021/051034, filed on Aug. 23, 2021.
Claims priority of provisional application 63/076,971, filed on Sep. 11, 2020.
Claims priority of provisional application 63/072,174, filed on Aug. 30, 2020.
Claims priority of provisional application 63/069,059, filed on Aug. 23, 2020.
Prior Publication US 2023/0168519 A1, Jun. 1, 2023
Int. Cl. G02B 27/14 (2006.01); B29D 11/00 (2006.01); F21V 8/00 (2006.01); G02B 27/01 (2006.01)
CPC G02B 27/143 (2013.01) [B29D 11/00663 (2013.01); G02B 6/0031 (2013.01); G02B 6/0055 (2013.01); G02B 27/0172 (2013.01); G02B 27/145 (2013.01); G02B 2027/013 (2013.01); G02B 27/0189 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A light guide comprising:
(a) a clear block of transparent material having an internal volume, said internal volume being an optical continuum without reflecting surfaces internal thereto;
(b) a first facet block of transparent material containing a first set of mutually-parallel partially-reflecting internal surfaces, said first facet block bonded to said clear block at a first planar interface; and
(c) a second facet block of transparent material containing a second set of mutually-parallel partially-reflecting internal surfaces, said second facet block bonded to said clear block at a second planar interface, said second planar interface being non-parallel to said first planar interface,
wherein said clear block, said first facet block and said second facet block together form at least part of a rigid optical assembly bounded by a pair of parallel surfaces for supporting internal reflection within said rigid optical assembly, and wherein said first set of partially-reflecting internal surfaces is parallel to said second set of partially-reflecting internal surfaces, and wherein a straight line between at least one of said first set of partially-reflecting internal surfaces and at least one of said second set of partially-reflecting internal surfaces passes through said clear block.