US 12,247,720 B2
Light emitting device
Jui-Jen Yueh, Miao-Li County (TW); Kuan-Feng Lee, Miao-Li County (TW); and Hong-Sheng Hsieh, Miao-Li County (TW)
Assigned to InnoLux Corporation, Miao-Li County (TW)
Filed by InnoLux Corporation, Miao-Li County (TW)
Filed on Jul. 12, 2024, as Appl. No. 18/770,675.
Application 18/770,675 is a continuation of application No. 17/685,397, filed on Mar. 3, 2022, granted, now 12,066,165.
Application 17/685,397 is a continuation in part of application No. 17/548,596, filed on Dec. 13, 2021, granted, now 12,018,816, issued on Jun. 25, 2024.
Application 17/548,596 is a continuation of application No. 17/213,239, filed on Mar. 26, 2021, granted, now 11,221,126, issued on Jan. 11, 2022.
Claims priority of application No. 202010338925.2 (CN), filed on Apr. 26, 2020.
Prior Publication US 2024/0369207 A1, Nov. 7, 2024
Int. Cl. F21V 14/00 (2018.01); G02F 1/13 (2006.01); G02F 1/1334 (2006.01); H01L 25/075 (2006.01); H01L 33/58 (2010.01)
CPC F21V 14/003 (2013.01) [G02F 1/1323 (2013.01); H01L 25/0753 (2013.01); H01L 33/58 (2013.01); G02F 1/1334 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A light emitting device, switchable in a first state and a second state, and comprising:
a plurality of light emitting elements for emitting lights; and
an optical element configured to guide the emitting lights generating from the plurality of light emitting elements;
wherein in the first state, the light emitting device has an output light, a first intensity of the output lights is measured at a viewing angle of 0°, a second intensity of the output lights is measured at a viewing angle of θ2 and an azimuth angle of Φ2, and a ratio of the second intensity to the first intensity is less than or equal to 0.1, wherein θ2 ranges from 35° to 55°, and Φ2 ranges from 0° to 28° or from 152° to 180°.