US 12,452,978 B2
Table lamp
Di Lou, Shanghai (CN); Huai Zhou Liao, Shanghai (CN); Zhong Huang, Shanghai (CN); Hua Jie Luo, Shanghai (CN); and Alexander Henricus Waltherus Van Eeuwijk, Eindhoven (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 18/720,846
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Dec. 22, 2022, PCT No. PCT/EP2022/087413
§ 371(c)(1), (2) Date Jun. 17, 2024,
PCT Pub. No. WO2023/131538, PCT Pub. Date Jul. 13, 2023.
Claims priority of application No. PCT/CN2022/070296 (WO), filed on Jan. 5, 2022; and application No. 22159477 (EP), filed on Mar. 1, 2022.
Prior Publication US 2025/0081311 A1, Mar. 6, 2025
Int. Cl. H05B 47/115 (2020.01); F21S 4/28 (2016.01); F21S 6/00 (2006.01); F21V 21/00 (2006.01); F21V 21/22 (2006.01); F21V 21/26 (2006.01); F21V 21/28 (2006.01); F21Y 103/10 (2016.01); F21Y 115/10 (2016.01); H05B 47/10 (2020.01); H05B 47/155 (2020.01)
CPC H05B 47/115 (2020.01) [F21S 4/28 (2016.01); F21S 6/003 (2013.01); F21V 21/22 (2013.01); F21V 21/26 (2013.01); H05B 47/155 (2020.01); F21V 21/28 (2013.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08); H05B 47/10 (2020.01)] 13 Claims
OG exemplary drawing
 
1. A table lamp for illuminating a task area of a table, the table lamp comprising:
a plurality of light sources, each light source being adapted to emit light in a respective illumination direction toward the task area; and
a control arrangement configured, for each of the plurality of light sources, to control the light source to illuminate the task area of the table responsive to:
a specular peak intensity angle of the light source being less than a reflected glare avoidance angle corresponding to a position of an observer; and
a sight angle from the light source to the observer being greater than a direct glare avoidance angle corresponding to the position of the observer;
wherein the specular peak intensity angle of the light source is an angle between a specular peak direction of the light source and a reference plane, and wherein the reflected glare avoidance angle is an angle between the reference plane and a direction between the position of the observer and the position of the light source, and
wherein the reference plane is perpendicular to a direction between the position of the observer and a center of the task area; wherein the direct glare avoidance angle corresponds to a field of view of the observer;
wherein the directions and angles are delimited in a plane parallel to the task area on the table.