Koninklijke Philips Corporation N.v.

Philips Lighting Holding B.v.

Signify Holding B.v.

Yun Li

Simon Eme Kadijk

Christoph Gerard August Hoelen

Ludovicus Johannes Lambertus Haenen

Mo Shen

Ye Liu

Chuan Yuan

Zhigang Pei

Disclosed is an optical element () comprising a central cavity () extending from a first aperture () to a second aperture () of the optical element, said central cavity gradually widening in a direction from the first aperture to the second aperture, said central cavity being delimited by a stack of transparent frustums () including a first frustum defining the first aperture and a final frustum defining the second aperture, each frustum having a prismatic outer surface () having a first surface portion () tapering in the direction from the second aperture to the first aperture and a continuous inner surface (), wherein the respective continuous inner surfaces combine to delimit said central cavity. Also disclosed is a lighting device including such an optical element and a luminaire including such a lighting device.

Optical element, lighting device and luminaire

A LED light bulb () having at least one LED (-). Light output from the LED is directed toward an offset scattering optics structure () that intersects and scatters the light output. The LED may optionally be paired with a narrow beam optical piece (--) to focus and direct the light output of the LED toward the scattering optics structure. A mounting structure () may support the scattering optics structure and offset the scattering optics structure from the LED.

LED light bulb with light scattering optics structure

Growing community of inventors

Eindhoven, Netherlands

Yun Li