	US 12,011,224 B2
	Method for determining refractive power of eye using immersive system and electronic device thereof
Ashish Goyal, Bangalore (IN); Vijay Narayan Tiwari, Bangalore (IN); Tushar Sircar, Bangalore (IN); and Aloknath De, Bangalore (IN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 16/967,948
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Feb. 7, 2019, PCT No. PCT/KR2019/001539 § 371(c)(1), (2) Date Aug. 6, 2020, PCT Pub. No. WO2019/156485, PCT Pub. Date Aug. 15, 2019.
Claims priority of application No. 201841004682 (IN), filed on Feb. 7, 2018; and application No. 2018 41004682 (IN), filed on Feb. 4, 2019.
Prior Publication US 2021/0030270 A1, Feb. 4, 2021
Int. Cl. A61B 3/103 (2006.01); G02B 27/01 (2006.01); G06V 40/16 (2022.01); G06V 40/18 (2022.01)

CPC A61B 3/103 (2013.01) [G02B 27/0172 (2013.01); G06V 40/161 (2022.01); G06V 40/18 (2022.01)]

16 Claims

1. A method for determining a refractive power of an eye of a wearer, the method being performed by an immersive system and comprising:

causing to display, through a positive lens, at least one optotype on a display of the immersive system;

changing a focus of the at least one optotype reflected using a plane reflecting mirror by changing a location of the at least one optotype on the display, such that a projection distance of the at least one optotype as seen by the wearer is changed;

obtaining a response about the changed focus of the at least one optotype as seen by the wearer; and

determining the refractive power of the eye of the wearer based on the response and the projection distance,

wherein the immersive system comprises the positive lens and the plane reflecting mirror disposed separately from the display, and

wherein the plane reflecting mirror is at an angle to an optical axis of the positive lens, and the optical axis is normal to the display.