Radiation image read-out apparatus

Claim 1

A radiation image read-out apparatus provided with a stimulating ray source for emitting stimulating rays for scanning a stimulable phosphor sheet carrying a radiation image stored therein, a photoelectric read-out means for photoelectrically detecting light emitted by the stimulable phosphor sheet during scanning by the stimulating rays, and a reflection mirror for reflecting the emitted light towards the photoelectric read-out means, wherein the improvement comprises the provision of: a stimulating ray adjustment means which comprises a beam diameter increasing means for increasing the beam diameter of said stimulating rays on the surface of said stimulable phosphor sheet by acting on the beam of said stimulating rays, a light intensity decreasing means for decreasing the intensity of said stimulating rays by acting on the beam of said stimulating rays, and an optical path changing means for changing the optical path of said stimulating rays by acting on the beam of said stimulating rays, said stimulating ray adjustment means being moveable between a position for acting on the beam of said stimulating rays and a position for not acting thereon, said reflection mirror being moveable in such a direction that the distance between said reflection mirror and said photoelectric read-out means changes, the movement of said stimulating ray adjustment means to the position for acting on the beam of said stimulating rays being interlocked with the movement of said reflection mirror in such a direction that said distance is increased.