US Patent No. 10,295,155

HEAT PROTECTION AND HOMOGENIZING SYSTEM FOR A LUMINAIRE


Patent No. 10,295,155
Issue Date May 21, 2019
Title Heat Protection And Homogenizing System For A 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. 10,295,155

1. An automated luminaire, comprising:a light source configured to produce a first light beam, the light source comprising an ellipsoidal reflector and a short arc discharge lamp fixedly mounted with the arc positioned near a first focus of the ellipsoidal reflector, the light source having an optical axis and being configured to move along the optical axis;
a compensation module optically coupled to the light source, the compensation module comprising a diffuser, the compensation module being configured to receive the first light beam and to produce a second light beam;
an optical device optically coupled to the compensation module and configured to receive the second light beam and to produce one of a modified light beam and an unmodified light beam; and
a controller configured to:
determine whether the optical device is producing the modified light beam or the unmodified light beam; and
in response to determining that the optical device is producing the modified light beam, (i) automatically move the light source to a first selected position along the optical axis or (ii) automatically alternately position first and second portions of the diffuser in the first light beam; and
in response to determining that the optical device is producing the unmodified light beam:
determine whether the light source is in the first selected position and, in response to so determining, automatically move the light source to a second selected position along the optical axis; and
determine whether the diffuser is positioned in the first light beam and, in response to so determining, automatically remove the diffuser from the first light beam.