| 摘要 |
PURPOSE:To easily install a lens, and also to prevent deformation of a diameter, thickness, etc. of the lens, and its core shift and inclination, by providing a tapered surface corresponding to both the lens and the lens frame, respectively, and fixing it to the lens body by a rotating operation of the lens. CONSTITUTION:A cylindrical part 23 of a lens 20 is inserted from the front side opening part of a lens frame 10 and is installed. In this case, the cylindrical part 23 is fitted into the outside of the lens frame 10, making the position of each stopper 12 of the lens frame 10 match a back surface 21a of each supporting arm 21, and an end face side of a fitting end 22a. Subsequently, each supporting arm 21 is led into the outside of each stopper 12, and after that, the cylindrical part 23 is rotated counter-clockwise, and when the fitting end 22a of a fitting part 22 of each supporting arm 21 is fitted to its corresponding stopper 12, each supporting arm 21 fixes each stopper 12 under a holding state, and the lens 20 can be fixed firmly to the lens frame 10, holding its core and inclination at the normal position. |
