US 12,092,824 B2
Optical device for augmented reality
Jeong Hun Ha, Seoul (KR); and Soon Gi Park, Seoul (KR)
Assigned to LETINAR CO., LTD, Anyang-si (KR)
Appl. No. 17/291,231
Filed by LETINAR CO., LTD, Anyang-si (KR)
PCT Filed Sep. 3, 2019, PCT No. PCT/KR2019/011293
§ 371(c)(1), (2) Date May 4, 2021,
PCT Pub. No. WO2020/096188, PCT Pub. Date May 14, 2020.
Claims priority of application No. 10-2018-0134979 (KR), filed on Nov. 6, 2018.
Prior Publication US 2021/0373341 A1, Dec. 2, 2021
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/0055 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An optical device for augmented reality, the optical device comprising:
an optical means for transmitting at least part of visible light therethrough; and
a reflective unit group including a plurality of reflective units disposed in a line along a first direction, which is any straight-line direction, on a surface of the optical means or inside the optical means;
wherein the plurality of reflective units reflect image light, output from an image output unit configured to output image light corresponding to an image for augmented reality, toward a pupil of an eye of a user; and
wherein each of the plurality of reflective units is disposed such that a distance to an adjacent reflective unit is 8 mm or less.