| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for displaying distance by using an X-ray device.SOLUTION: An X-ray device includes an X-ray generator 182 and a visible light generator, and a projection member made of a material that is at least partially transparent to visible light, such as a reticle, and the projection member includes an image disposed within a path of visible light so as to project a two-dimensional image including a shadow demarcated by the image. The X-ray device is configured to emit laser beams at a certain angle to visible light, such that laser beams cross at least one portion of the two-dimensional image at predetermined distance from a laser device 113 and allow a user to accurately determine distance from the device to an object exposed to X-ray radiation.SELECTED DRAWING: Figure 9 |
