| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire that reduces the time required for rapid adjustments of focal position and adjustments of the focal positions of a number of spotlights to enable fine focus adjustments of the spotlights. SOLUTION: A moving block 16 is supported against a screw shaft 22 via a slide member 26 suitable for the screw shaft 22 relatively rotatable and slidable thereto. A guide pin 28 is movably supported against a guide member 40 disposed to extend from a sidewall 122a of a bottom member 122 in the direction perpendicular to the screw shaft 22. The guide pin 28 is detachably engaged in a screw groove 221 of the screw shaft 22 and a coil spring 30 biases the guide pin 28 in the direction for engaging in the screw groove 221. The guide pin 28 is operated by an operating handle 32 so that it is removed from the screw groove 221. With the guide pin 28 removed from the screw groove 221, the moving block 12 is moved in the direction of the optical axis of a condensing lens 14. COPYRIGHT: (C)2010,JPO&INPIT |
