Patent ID: 11965625
Assignee: SIGNIFY HOLDING B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC F

Claim 0:
1. A light emitting device adapted for projecting a light beam onto a target surface, the light emitting device comprising:
a light engine comprising a light source,
a light mixing chamber comprising a light exit window,
an optical component having a spherical shape with a curved light-receiving surface, and
a diffuser,
wherein the light source is arranged to, in operation, emit light towards the light exit window of the light mixing chamber,
wherein the diffuser is provided at the light exit window of the light mixing chamber,
wherein the optical component is provided adjacent to the diffuser, and
wherein the shape of the diffuser is conformal to the curved light-receiving surface of the optical component and the diffuser is placed distance from the optical component coincident with a predetermined focal plane of the optical component; wherein the spherical shape is a sphere, and the predetermined focal plane is equal to:
f=(R·n)/(2(n−1))

where f is a focal length, R is a radius of the sphere, and n is a refractive index of the spherical shape.