Patent EP0142833A2 successfully refreshed from Google Patents.
EP0142833A2
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EP
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Radiation image read-out apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1984-11-16
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Granted: —
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Expires: 2004-11-16
Abstract
Abstract In a radiation image read-out apparatus for scanning a stimulable phosphor carrying a radiation image stored therein by stimulating rays, and photoelectrically detecting light emitted by the stimulable phosphor by use of a photodetector via a light guide member, the light guide member is fabricated into a hollow tubular shape. The light guide member Is positioned in face-to-face relation to the stimulable phosphor so that the longitudinal direction of the light guide member coincides with the scanning direction of the stimulating rays. The photodetector is secured to at least one end face of the light guide member. The light guide member is provided with a slit extending longitudinally for passing the stimulating rays therethrough and introducing the light emitted by the stimulable phosphor into the light guide member.
Inventors
- 👤 Chiaki C/O Fuji Photo Film Co. Ltd Goto
- 👤 Masaru C/O Fuji Photo Film Co. Ltd Noguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 13:16
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/0281; G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2012; G01T1/2014
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
A radiation image read-out apparatus for scanning a stimulable phosphor carrying a radiation image stored therein by stimulating rays which cause the stimulable phosphor to emit light in proportion to the radiation energy stored, and photoelectrically-detecting the emitted light by a photodetector via a light guide member, wherein the improvement comprises fabricating said light guide member into a hollow tubular shape, positioning said light guide member in face-to-face relation to said stimulable phosphor so that the longitudinal direction of said light guide member coincides with the scanning direction of said stimulating rays, securing said photodetector to at least one end face of said light guide member, and providing said light guide member with a slit extending in said longitudinal direction for passing said stimulating rays therethrough and for introducing the light, which is emitted by said stimulable phosphor when said stimulable phosphor is scanned by said stimulating rays, into said light guide member.
Claim 2
Dependent Claim
153 words
A radiation image read-out apparatus for scanning a stimulable phosphor carrying a radiation image stored therein by stimulating rays which cause the stimulable phosphor to emit light in proportion to the radiation energy stored, and photoelectrically-detecting the emitted light by a photodetector via a light guide member, wherein the improvement comprises fabricating said light guide member into a hollow tubular shape, positioning said light guide member in face-to-face relation to said stimulable phosphor so that the longitudinal direction of said light guide member coincides with the scanning direction of said stimulating rays, securing said photodetector to at least one end face of said light guide member, and providing said light guide member with a slit extending in said longitudinal direction for passing said stimulating rays therethrough and for introducing the light, which is emitted by said stimulable phosphor when said stimulable phosphor is scanned by said stimulating rays, into said light guide member.
Claim 3
Dependent Claim
35 words
An apparatus as defined in Claim 1 wherein said slit is positioned so that said stimulating rays impinge upon said stimulable phosphor at an angle with respect to a line normal to said stimulable phosphor.
Claim 4
Dependent Claim
44 words
An apparatus as defined in Claim 1 wherein said light guide member is asymmetric with respect to a line which is normal to said stimulable phosphor and which passes through said slit, on a cross-section normal to the scanning direction of said stimulating rays.
Claim 5
Dependent Claim
44 words
An apparatus as defined in Claim 2 wherein said light guide member is asymmetric with respect to a line which is normal to said stimulable phosphor and which passes through said slit, on a cross-section normal to the scanning direction of said stimulating rays.
Claim 6
Dependent Claim
42 words
An apparatus as defined in Claim 1 wherein said light guide member is shaped so that the cross-section normal to the scanning direction of said stimulating rays is of the shape of a laterally elongated circle with the lower half cut off.
Claim 7
Dependent Claim
50 words
An apparatus as defined in Claim 1 wherein said light guide member is provided with a reflecting mirror secured to the upper inner surface in the longitudinal direction of said light guide member so that the light emitted by said stimulable phosphor is reflected in directions other than said slit.
Claim 8
Dependent Claim
37 words
An apparatus as defined in Claim 1 wherein said light guide member is shaped so that the hollow portion is widened from the center to the end faces in the longitudinal direction of said light guide member.
Claim 9
Dependent Claim
35 words
An apparatus as defined in Claim 1 wherein said light guide member is fabricated by joining two truncated cones so that the diameter at the center is smaller and those at end portions are larger.
References Cited (Backward Citations)
No citation records indexed.
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