| 摘要 |
PROBLEM TO BE SOLVED: To improve productivity by checking the soiling state of a transmitted- light window which is installed near a condensing lens without taking off the window and taking off the window when the soiling reaches a specific level or above. SOLUTION: This laser machining head 1 is such that its main body 3 is provided with an image pickup means 33 for detecting the machining condition of a work W, and is also provided with a zoom lens 29 capable of selecting the focal position for at least two positions, in order to detect by the image pickup means 33 the condition of a transmitted-light window 11 installed near a condensing lens 9 in the main body 3. The transmitted-light window 11 is installed so that it may be drawn out, and in addition, a mirror 7 for transmitting visible light is provided in the main body 3 of the machining head for the purpose of detecting the machined condition of the work W by the image pickup means 33. |
