US 11,754,230 B2
Optical structure for producing decorative lighting effects
Ties Van Bommel, Horst (NL); and Rifat Ata Mustafa Hikmet, Eindhoven (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/630,845
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Jul. 27, 2020, PCT No. PCT/EP2020/071074
§ 371(c)(1), (2) Date Jan. 27, 2022,
PCT Pub. No. WO2021/018813, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 19189513 (EP), filed on Aug. 1, 2019.
Prior Publication US 2022/0299171 A1, Sep. 22, 2022
Int. Cl. F21K 9/232 (2016.01); F21V 8/00 (2006.01)
CPC F21K 9/232 (2016.08) [G02B 6/0068 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An optical structure for producing a decorative lighting effect in a lighting device, said optical structure comprising:
an optical element formed in one piece and comprising at least two openings;
an LED-filament comprising a substrate and a plurality of light sources arranged on said substrate, said substrate being at least partly made of a flexible material;
said LED filament comprises two or more portions;
wherein each of said openings is adapted to receive said LED-filament such that a portion of said LED-filament respectively extends through and is at least partly enclosed by a surrounding wall of said at least one opening such that said LED-filament is guided by and held in place by means of said at least one opening of the optical element and wherein light emitted from said LED-filament interacts with said optical element, and
wherein the two or more portions are arranged to respectively extends through respective two or more openings of said optical element.