US 12,290,699 B2
Light outputting device for scalp care, and control method therefor
Kyuhyoung Choi, Seoul (KR); Kyounghee Kim, Seoul (KR); Hoseong Song, Seoul (KR); Dongwon Kim, Seoul (KR); and Gungil Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/625,509
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jul. 17, 2020, PCT No. PCT/KR2020/009480
§ 371(c)(1), (2) Date Jun. 21, 2022,
PCT Pub. No. WO2021/010801, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 10-2019-0087254 (KR), filed on Jul. 18, 2019.
Prior Publication US 2023/0181925 A1, Jun. 15, 2023
Int. Cl. A61N 5/06 (2006.01); A61B 5/00 (2006.01); A61B 5/01 (2006.01); A61N 5/067 (2006.01)
CPC A61N 5/0616 (2013.01) [A61B 5/0013 (2013.01); A61B 5/0077 (2013.01); A61B 5/01 (2013.01); A61B 5/448 (2013.01); A61N 5/067 (2021.08); A61B 2562/0271 (2013.01); A61B 2562/029 (2013.01); A61N 2005/0626 (2013.01); A61N 2005/0647 (2013.01); A61N 2005/0652 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A light outputting device for scalp care comprising:
an outer case having a dome shape to form an outer appearance;
an inner case located at an inside of the outer case;
a plurality of laser light sources disposed in a space between the outer case and the inner case;
a plurality of photodiodes comprising a respective photodiode located at each of the plurality of laser light sources; and
a processor configured to:
obtain a light amount sensing value of a first photodiode among the plurality of photodiodes,
set a light amount for a first laser light source corresponding to the first photodiode based on the obtained light amount sensing value, and
drive the first laser light source based on the set light amount,
wherein the processor is further configured to:
turn on at least one laser light source disposed within a predetermined distance from the first laser light source among the plurality of laser light sources, and
obtain the light amount sensing value of the first photodiode based on light emitted when the at least one laser light source is turned on, and
wherein the processor is further configured to:
sequentially turn on the at least one laser light source and sequentially obtain at least one light amount sensing value through the first photodiode, and
determine an average value of at least one sequentially obtained light amount sensing value, wherein the light amount for the first laser light source is set based on the determined average value.