LED lighting arrangement including a substantially spherical optical component having a surface partially coated with a light emitting phosphor

A lighting arrangement comprising:

• a light reflective enclosure;
• at least one light emitting diode housed within the enclosure and operable to generate light having a wavelength ranging from 300 to 500 nm;
• a solid substantially spherical optical component mounted over the enclosure opening and at least one phosphor operable to absorb at least a portion of the light emitted by the light emitting diode and to emit light having a wavelength ranging from 450 to 700 nm, wherein light generated by the arrangement comprises the combined light emitted by the light emitting diode and the at least one phosphor and is configured to appear white in color and wherein the at least one phosphor material is provided as a layer on at least a part of the surface of the optical component that is enclosed within the volume of the enclosure when the component is mounted to the enclosure.

An optical component for a lighting arrangement comprising:

• a light reflective enclosure;
• at least one radiation source housed within the enclosure and operable to generate excitation light of a first wavelength range;
• at least one phosphor operable to absorb at least a portion of the excitation light and to emit light of a second wavelength range, wherein light generated by the arrangement comprises the combined light of the first and second wavelength ranges and wherein the optical component is a substantially spherical and the at least one phosphor material is provided as a layer on at least a part of the surface of the optical component that is enclosed within the volume of the enclosure when the component is mounted to the enclosure opening.