an x - ray device for irradiating a beam of x - rays on an object to capture an x - ray image of the object is smaller in size and weight than conventional ones . the x - ray device includes an x - ray tube for generating the beam of x - rays and irradiating the beam of x - rays on the object , a shutter arranged around an x - ray irradiation axis for regulating an x - ray irradiation region on which the beam of x - rays is irradiated through the object , and a visual indicator unit arranged on the shutter for movement together with the shutter , the visual indicator unit being designed to visually indicate the x - ray irradiation region . in the x - ray device , the x - ray irradiation region is visually indicated by laser light without having to use a lamp otherwise provided between the x - ray tube and the shutter .