Illumination – Light source and modifier – Adjustable or repositionable modifier
Reexamination Certificate
2007-09-18
2007-09-18
Owens, Douglas W. (Department: 2821)
Illumination
Light source and modifier
Adjustable or repositionable modifier
C362S281000, C700S019000
Reexamination Certificate
active
11127975
ABSTRACT:
A stage lighting lamp unit includes a processor for receiving control data from a remote console. Beam orientation data for the lamp unit is passed to the lamp in the form of the x, y and z co-ordinates of a point in space through which the beam is to pass. The processor divides the required lamp travel into a number of stages dependent on execution duration data sent with the position data, and calculates, for each stage, a new value for pan and tilt angles for the lamp. These values are passed to pan and tilt controlling co-processors which control servo-motors for pan and tilt operation. The lamp unit also incorporates a rotatable shutter for interrupting the lamp beam when required. The shutters of all the lamps in a system can be instructed from the remote console to open and close in synchronism, thereby providing a stroboscopic effect.
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Hughes Michael D.
Hunt Mark A.
Owen Keith J.
Alemu Ephrem
Fish & Richardson P.C.
Owens Douglas W.
Production Resource Group L.L.C.
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