Radiograph reader

Abstract

Abstract PURPOSE:To more exactly detect the intensity of emitted light by moving the spot projection part of excitation light to draw the locus of the circumference with the spacing distance between both end parts of an optical path mechanism as a radius. CONSTITUTION:The spot projection part of the excitation light 2 draws the locus of the circumference with the spacing distance R between both end parts of the optical path mechanism 9 as a radius when the optical mechanism 9 is rotated by a rotational driving mechanism 10. For example, a scanning circle P moves parallel along the central axial line L of a phosphor layer 1b and the scanning is progressed to a band shape with the diameter of the circle P as a width size if a radiograph recording member 1 is moved by each specified distance in an arrow (b) direction along the axial line L at every one rotation of the optical path mechanism 9. Not only the intensity of the emitted light detected by an emitted light detector 6 but also the difference in the detected intensity of the emitted light and the time elapsed during this time are obtd. as information when reading is executed twice at a time interval. The intensity of the emitted light is thereby exactly detected.

Inventors

• 👤 Chuji Katayama

Bibliographic Details