Patent ID: 9217559
Filing Date: 2015-12-22
Classification: F21S,F21V,F21W,G01D

Abstract:
1. A moving head light fixture comprising: a base; a yoke rotatably connected to said base; a head rotatably connected to said yoke, said head comprises at least one light source generating light; at least one actuator adapted to rotate at least one of said yoke around a yoke axis and said head around a head axis; a position sensor providing at least one position signal indicative of at least the position of said yoke in relation to said base or the position of said head in relation to said yoke; a processing device adapted to control said actuator based on said at least one position signal; wherein said position sensor comprises: a magnetic element attached to an axel of said at least one actuator, said magnetic element generating a magnetic field, said magnetic field is substantially perpendicular to said axel of said at least one actuator; a magnetic encoder fixed in relation to said axel of said at least one actuator; said magnetic encoder provides at least one actuator axel position signal based on said magnetic field, and said at least one axel position signal is indicative of the angular position of said axel of said actuator in relation to said magnetic encoder; an indicator providing an indication signal when said yoke is positioned at a number of predetermined angular positions in relation to said base or when said head is positioned a number of predetermined angular positions in relation to said yoke; wherein said at least one position signal comprises said actuator axel position signal and said indication signal.