Invention Grant
- Patent Title: Lighting device with sparkle effect
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Application No.: US17299612Application Date: 2019-12-10
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Publication No.: US11353163B2Publication Date: 2022-06-07
- Inventor: Rifat Ata Mustafa Hikmet , Ties Van Bommel
- Applicant: SIGNIFY HOLDING B.V.
- Applicant Address: NL Eindhoven
- Assignee: SIGNIFY HOLDING B.V.
- Current Assignee: SIGNIFY HOLDING B.V.
- Current Assignee Address: NL Eindhoven
- Agent Daniel J. Piotrowski
- Priority: EP18212198 20181213
- International Application: PCT/EP2019/084338 WO 20191210
- International Announcement: WO2020/120438 WO 20200618
- Main IPC: F21K9/232
- IPC: F21K9/232 ; F21K9/65 ; H01L33/50 ; H01L33/56 ; F21Y115/10

Abstract:
A lighting device comprising solid state light-emitting elements mounted on a carrier substrate, an encapsulant comprising a luminescent material, the encapsulant enclosing the light emitting surfaces of the solid state light-emitting elements and being configured to at least partly convert light emitted by the solid state light-emitting element to wavelength converted light, and a plurality of light-transmissive particles contained at least partly within the encapsulant, the light-transmissive particles having an average longest dimension extension in the range 0.4 to 1.5 times a layer thickness of said encapsulant over the light emitting surfaces. The light-transmissive particles may disrupt the luminescent effect of the encapsulant material to create a sparkling effect.
Public/Granted literature
- US20220018499A1 LIGHTING DEVICE WITH SPARKLE EFFECT Public/Granted day:2022-01-20
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