US 12,374,804 B2
Lens, electromagnetic lens assembly having the lens, and wireless communication device having the electromagnetic lens assembly
I-Ru Liu, Hsinchu (TW); Kai-Jia Yeh, Hsinchu (TW); Ming-Hung Su, Hsinchu (TW); Chih-Yung Chen, Hsinchu (TW); Wen-Pin Lo, Hsinchu (TW); and Pai-Yuan Hsiao, Hsinchu (TW)
Assigned to ACCTON TECHNOLOGY CORPORATION, Hsinchu (TW)
Filed by ACCTON TECHNOLOGY CORPORATION, Hsinchu (TW)
Filed on Oct. 20, 2022, as Appl. No. 17/970,251.
Claims priority of application No. 202123113330.6 (CN), filed on Dec. 13, 2021.
Prior Publication US 2023/0187842 A1, Jun. 15, 2023
Int. Cl. H01Q 15/08 (2006.01); H01Q 1/22 (2006.01); H01Q 1/42 (2006.01); H01Q 15/02 (2006.01); H01Q 19/06 (2006.01); H04W 88/08 (2009.01)
CPC H01Q 19/06 (2013.01) [H01Q 1/2291 (2013.01); H01Q 1/42 (2013.01); H01Q 15/02 (2013.01); H04W 88/08 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A wireless communication device, comprising:
a casing and an antenna, wherein the casing has a wireless signal penetrating area; the antenna located in the casing corresponds to the wireless signal penetrating area and sends a wireless signal through the wireless signal penetrating area; and
an electromagnetic lens assembly comprising a lens barrel and a lens, wherein the lens barrel has a first end and a second end opposite to the first end on an axis of the lens barrel; the first end is closer to the wireless signal penetrating area than the second end; the lens is disposed in the lens barrel for concentrating an electromagnetic wave; the lens has an incident surface and an emission surface on an axis of the lens, wherein the incident surface of the lens is a flat surface and faces the first end, and the emission surface is a convex surface; the emission surface has a curvature, which is not equal to 0, from a perspective of a first axis perpendicular to the axis of the lens, and has a curvature of 0 from a perspective of a second axis perpendicular to the axis of the lens and the first axis;
wherein a radius of a projection circle that the emission surface projects along the axis of the lens is defined as R; a curvature radius of the emission surface on the second axis is defined as Rc; a distance between the incident surface and the antenna on the axis of the lens is defined as D; the lens satisfies 0.50≤R/Rc≤0.6 and 0.4≤R/D≤0.5.