| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photographing lens for easily and steplessly adjusting an interval of two adjoining lenses from the outside without disassembling the lenses while confirming the optical performances, causing no change in the optical performances from the outside of the lenses after the adjustment, and having favorable assembly workability allowing sure fixing. <P>SOLUTION: A first lens barrel and a second lens barrel for retaining lenses are coupled with screws, and the second lens barrel is rotatingly fed to the first lens barrel so as to adjust an interval between the lenses. While the optical performances are confirmed, the second lens barrel is rotatingly operated through an opening part provided in a lens housing. A lens barrel fixing mechanism that presses the second lens barrel in the optical axis direction to fix the lens barrel is provided adjacent to the second lens barrel. After the lens interval is adjusted, the lens barrel fixing mechanism is operated from the outside of the lens housing to fix the lens interval. <P>COPYRIGHT: (C)2012,JPO&INPIT |
