| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a surface state measurement method capable of accurately detecting a surface state of a measurement object.SOLUTION: Before measurement (steps S5-S8) of a measurement area of a sun gear, a focal position of a lens is matched on an optimum position. When adjusting the focal position of the lens, an operator sticks a focus confirmation plate to the measurement area, and images a base end surface of an infrared radiation fiber cable by an infrared radiation camera, and while viewing a monitor of a display device, makes a tip end part of the infrared radiation fiber cable come close to or separate from the measurement area of the sun gear (step S4).</p> |
