Pan/tilt limitation method
AssigneeHarman Professional Denmark ApS
InventorChristian Quist NIELSEN
Life of this patent
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Abstract
The invention relates to a moving head light fixture including a base, a yoke connected to the base and configured to be rotated relative to the base around a pan axis, a head connected to the yoke and configured to be rotated relative to the yoke around a tilt axis, and a control unit. The control unit is configured to operate the moving head light fixture in a calibration mode to determine a maximum needed rotation around the tilt and pan axis in order to illuminate a target area, and to operate in an operating mode in which the moving head light fixture illuminates the target area only within the maximum needed rotation.
Claims15
A moving head light fixture, comprising:
- a base,
- a yoke connected to the base and configured to be rotated relative to the base around a pan axis,
- a head connected to the base and configured to be rotated relative to the yoke around the tilt axis,
- a control unit configured to:
- operate the moving head light fixture in a calibration mode used to determine a maximum needed rotation around the tilt axis and the pan axis in order to illuminate a target area, and operate in an operating mode in which the moving head light fixture illuminates the target area only within the maximum needed rotation,
- control the movement of the yoke around the pan axis and of the head around the tilt axis,
- determine that the calibration mode should be entered upon detection of a first predefined user interaction with the moving head light fixture, wherein in the calibration operating mode the control unit is configured to:
- determine a minimum pan rotation angle of the yoke around the pan axis upon detecting that the user has moved the moving head light fixture to a first position,
- determine a maximum pan rotation angle of the yoke around the pan axis upon detecting that the user has moved the moving head light fixture to a second position,
- determine a minimum tilt rotation angle of the head around the tilt axis upon detecting that the user has moved the moving head light fixture to a third position,
- determine a maximum tilt rotation angle of the head around the tilt axis upon detecting that the user has moved the moving light fixture to a fourth position,
- wherein the control unit is further configured, when operating in the operating mode, to limit the rotation of the yoke around the pan axis to pan rotation angles in a range between the minimum pan and the maximum pan rotation angle, and to limit the rotation of the head around the tilt axis to tilt rotation angle in a range between the minimum tilt and the maximum tilt rotation angle independent of a control signal provided to the control unit for controlling the movement of the yoke and the head.
The moving head light fixture according to any of the preceding claims, wherein the control unit is configured to:
- determine that the calibration mode is entered when a first predefined user interaction is detected, and
- detect the position of the head at the maximum tilt rotation angle as positioned by the user in the fourth position when a fifth predefined user interaction is detected
A method for operating a moving head light fixture which comprises a base, a yoke connected to the base and configured to be rotated relative to the base around a pan axis, a head connected to the yoke and configured to be rotated relative to the yoke around a tilt axis, and a control unit configured to operate the moving head light fixture in a calibration mode used to determine a maximum needed rotation around the tilt and the pan axis in order to illuminate a target area, and in an operating mode in which the moving head light fixture illuminates the target area only within the maximum needed rotation, the method comprising:
- determining that the calibration mode should be entered upon detection by a control unit of an interaction of a user with the moving head light fixture, and when operating in the calibration mode:
- determining a minimum pan rotation angle of the yoke around the pan axis upon detecting that the user has moved the moving head light fixture to a first position,
- determining a maximum pan rotation angle of the yoke around the pan axis upon detecting that the user has moved the moving head light fixture to a second position,
- determining a minimum tilt rotation angle of the head around the tilt axis upon detecting that the user has moved the moving head light fixture to a third position,
- determining a maximum tilt rotation angle of the head around the tilt axis upon detecting that the user has moved the moving light fixture to a fourth position, and
- when operating in the operating mode:
- limiting a rotation of the yoke around the pan axis to pan rotation angles in a range between the minimum pan and the maximum pan rotation angle, and limiting the rotation of the head around the tilt axis to tilt rotation angles in a range between the minimum tilt and the maximum tilt rotation angle independent of a control signal provided to the control unit for controlling the movement of the yoke and the head.
Dependencies are inferred from the claim text.