| 摘要 |
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. The desired number of gobos 9 are removably arranged at the holder slot 10 under a state in which they are held by the holders 8, and each of the holders 8 is formed such that the gobo insertion segments 45, 46 are arranged in duplex form. Thus, one type of gobo holder can be adapted for two kinds of gobos 9-1, 9-2 of different sizes with high degree of repetitive use (an amount of distribution) . The reflector 4 is separated into the forward half segment 4a and the rearward half segment 4b, and a clearance 4c is present between these both members 4a, 4b, so that the optical characteristic is not damaged and the thermal influence of the bulb 3 in respect to the reflector 4 is restricted as much as possible to enable some phenomena such as a crack at the base material of the reflector 4 or a peeling of the coating raw material to be prevented. <IMAGE> |
