Abstract: A lighting device includes a reflector that has forward and rearward segments separated by a clearance for cooling, a gobo holder into which gobos of differing sizes can be inserted and held in position, and a lens holder which can be moved forwardly and rearwardly in the lighting device by rotation of a gear which is attached to the lens holder and engages a rack in a slide guide in the lighting device, the gear being moved by a knob located outside the lighting device and which is rotatable with the gear and movable along the lighting device.

Abstract: The lighting device 1 is constructed such that the lens holder 11 is held by the guide rails 12a, 12b in such a way that the lens holder can be slid in a forward or rearward direction, the rack 13 is formed along the sliding direction of the lens holder 11, wherein it stores the lens position adjusting mechanism 6 including the gear 14 slid in integral with the lens holder 11 in a forward or rearward direction while being engaged with the rack 13, the operating knob 15 arranged at the outer surface of the lighting device 2 and slid in a forward or rearward direction while being integrally rotated with the gear 14, and the cam type lever 21 for use in locking a rotation of the operating knob 15. Thus, when either the focus adjustment or the zoom adjustment or the like is to be carried out, a fine adjustment of the position of the lens 5b can be easily carried out and a fixing of position of the lens after adjustment is also easily performed.