US Patent No. 10,520,175

COLLIMATION AND HOMOGENIZATION SYSTEM FOR AN LED LUMINAIRE


Patent No. 10,520,175
Issue Date December 31, 2019
Title Collimation And Homogenization System For An Led Luminaire
Inventorship Pavel Jurik, Prostredni Becva (CZ)
Josef Valchar, Prostredni Becva (CZ)
Assignee Robe Lighting s.r.o., Roznov pod Radhostem (CZ)

Claim of US Patent No. 10,520,175

1. An automated luminaire, comprising:a plurality of light sources, each light source comprising:
a plurality of light emitting diode (LED) sources, each LED source configured to emit a different color of light; and
a light integrator optically coupled to the plurality of LED sources and configured to homogenize the colors of light emitted by the LED sources;
a plurality of receiving lens assemblies, each receiving lens assembly optically coupled to an associated one of the plurality of light sources, each receiving lens assembly comprising a receiving lens and a receiving lens spill shield, the receiving lens spill shield extending (i) toward the associated one of the plurality of light sources, (ii) parallel to a light source optical axis of the associated one of the plurality of light sources, and (iii) around at least a portion of the light integrator and mechanically coupled to the receiving lens, each receiving lens spill shield configured to reduce light spill from between the light integrator of the associated one of the plurality of light sources and the receiving lens impinging on a receiving lens or other optical component associated with an adjacent light integrator;
an output lens assembly optically coupled to the plurality of receiving lens assemblies, the output lens assembly comprising an output lens and an output lens spill shield, the output lens spill shield extending around at least a portion of at least one receiving lens assembly and configured to move with the output lens, the output lens spill shield configured to reduce light spill from the at least one receiving lens assembly impinging on optical components associated with an adjacent receiving lens assembly; and
a gobo carrier optically coupled to at least one light source of the plurality of light sources and to the associated one of the plurality of receiving lens assemblies, the receiving lens spill shield extending around at least a portion of the gobo carrier, the gobo carrier comprising a plurality of gobo patterns, the gobo carrier configured to be electrically actuated to move a selected one of the plurality of gobo patterns into a light beam emitted from the at least one light source,
the receiving lens assembly associated with the gobo carrier is configured to move along the light source optical axis of the associated one of the plurality of light sources, the output lens assembly is configured to move along an optical axis of the plurality of receiving lens assemblies, and the receiving lens assembly associated with the gobo carrier is configured to move independently of the output lens assembly.