Multiple-head phosphor screen scanner

Details Multiple-head phosphor screen scanner Multiple-head phosphor screen scanner

G - Physics

01

N

G01N 23/04 (2006.01) G03B 42/02 (2006.01) G03B 42/08 (2006.01) H04N 1/04 (2006.01) H04N 1/10 (2006.01)

Patent

CA 2345266

A multiple-head scanning device (20) for reading an image stored on a photostimulable phosphor storage screen (10), comprising, a rotatable frame having a center (13) and an outer perimeter (15); a photomultiplier tube (40) mounted to the rotatable frame at a location proximal the center (13) of the rotatable frame; a plurality of radially extending optical trains (12) mounted to the rotatable frame at 120 degrees to one another, each optical train (12) configured to direct incident laser light towards phosphor storage screen (10) and to direct response radiation emitted by phosphor storage (10) screen in response to the incident laser light towards the photomultiplier tube (40).

L'invention concerne un scanner (20) à têtes multiples qui permet de lire une image stockée sur un écran fluorescent (10) photostimulable à mémoire. Le scanner comprend un cadre rotatif comportant un centre (13) et un périmètre (15); un photomultiplicateur (40) monté sur ledit cadre à proximité du centre (13) de ce dernier; et une pluralité de trains optiques (12) dirigés radialement et montés sur le cadre rotatif de façon à former entre eux un angle de 120 degrés. Chaque train optique (12) est configuré de façon à diriger la lumière laser incidente sur l'écran fluorescent (10), puis à diriger la radiation émise par ledit écran (10), en réponse à la lumière laser incidente, sur le photomultiplicateur (40).

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