| 摘要 |
<p>PROBLEM TO BE SOLVED: To mechanically rapidly conduct the replacement of objective having a low magnification with an objective having a high magnification and a focusing mechanism at the body of an infrared camera. SOLUTION: An objective replacing mechanism 5 has a camera elevating mechanism 51 and a lens moving mechanism 52. The body 31 of an infrared camera 3 is lifted by the mechanism 51, and both the objectives 32a, 32b attached to the lens mount 528 of the mechanism 52 lifting together with the body 31 are stopped at the predetermined height by an upper limit stopper 524, and separated. The amount 528 is horizontally moved by a switching motor 527, both the lenses 32a, 32b are alternately stopped at the positions corresponding to the body 31, replaced, and then the body 31 and the objective 32a or 32b are lowered together, brought into contact with one another, and then vertically moved to regulate the focus.</p> |
