Optical system for dosimeter reader
First Claim
Patent Images
1. A device comprising:
- an optically stimulated luminescence (OSL) reader for reading an OSL sensor positioned above an optical light pipe of the OSL reader,wherein the OSL reader comprises;
a light source emitting stimulation light for stimulating an optically stimulated luminescent material (OSLM) of the OSL sensor; and
the optical light pipe for illuminating the OSL sensor with the stimulation light,wherein the stimulation light defines a first light path,wherein the optical light pipe is located on a first light path between the light source and the reading position for the OSL reader,wherein the OSL reader comprises a dichroic mirror positioned so that the stimulation light passes there through and so that luminescence light emitted by the OSL sensor is reflected towards an emitted light detector and wherein the dichroic mirror is located on the first light path between the light source and the optical light pipe, andwherein the OSL reader comprises a green filter for filtering out non-green light in the stimulation light and wherein the green filter is located on the first light path between the light source and the optical light pipe.
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Abstract
Described is an optical system for a dosimeter reader having reduced sensitivity to vibration and motion.
61 Citations
20 Claims
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1. A device comprising:
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an optically stimulated luminescence (OSL) reader for reading an OSL sensor positioned above an optical light pipe of the OSL reader, wherein the OSL reader comprises; a light source emitting stimulation light for stimulating an optically stimulated luminescent material (OSLM) of the OSL sensor; and the optical light pipe for illuminating the OSL sensor with the stimulation light, wherein the stimulation light defines a first light path, wherein the optical light pipe is located on a first light path between the light source and the reading position for the OSL reader, wherein the OSL reader comprises a dichroic mirror positioned so that the stimulation light passes there through and so that luminescence light emitted by the OSL sensor is reflected towards an emitted light detector and wherein the dichroic mirror is located on the first light path between the light source and the optical light pipe, and wherein the OSL reader comprises a green filter for filtering out non-green light in the stimulation light and wherein the green filter is located on the first light path between the light source and the optical light pipe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 14, 15, 16)
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9. A device comprising:
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an optically stimulated luminescence (OSL) reader for reading an OSL sensor positioned above an optical light pipe of the OSL reader, wherein the OSL reader comprises; a light source emitting stimulation light for stimulating an optically stimulated luminescent material (OSLM) of the OSL sensor; and the optical light pipe for illuminating the OSL sensor with the stimulation light, wherein the stimulation light defines a first light path, wherein the optical light pipe is located on a first light path between the light source and the reading position for the OSL reader, wherein the OSL reader comprises a dichroic mirror positioned so that the stimulation light passes there through and so that luminescence light emitted by the OSL sensor is reflected towards an emitted light detector and wherein the dichroic mirror is located on the first light path between the light source and the optical light pipe, and wherein the OSLM of the OSL sensor is approximately 1 mm from the exit of the optical light pipe.
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10. A device comprising:
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an optically stimulated luminescence (OSL) reader for reading an OSL sensor positioned above an optical light pipe of the OSL reader, wherein the OSL reader comprises; a light source emitting stimulation light for stimulating an optically stimulated luminescent material (OSLM) of the OSL sensor; and the optical light pipe for illuminating the OSL sensor with the stimulation light, wherein the stimulation light defines a first light path, wherein the optical light pipe is located on a first light path between the light source and the reading position for the OSL reader, wherein the OSL reader comprises a dichroic mirror positioned so that the stimulation light passes there through and so that luminescence light emitted by the OSL sensor is reflected towards an emitted light detector and wherein the dichroic mirror is located on the first light path between the light source and the optical light pipe, and wherein the OSL reader comprises a dichroic mirror and an activity sensor for determining that the OSL reader is functional when a non-zero (non-0) reading is received by the activity sensor due to a portion of stimulated light being reflected by the dichroic mirror. - View Dependent Claims (11)
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12. A device comprising:
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an optically stimulated luminescence (OSL) reader for reading an OSL sensor positioned above an optical light pipe of the OSL reader, wherein the OSL reader comprises; a light source emitting stimulation light for stimulating an optically stimulated luminescent material (OSLM) of the OSL sensor; and the optical light pipe for illuminating the OSL sensor with the stimulation light, wherein the stimulation light defines a first light path, wherein the optical light pipe is located on a first light path between the light source and the reading position for the OSL reader, wherein the OSL reader comprises a dichroic mirror positioned so that the stimulation light passes there through and so that luminescence light emitted by the OSL sensor is reflected towards an emitted light detector and wherein the dichroic mirror is located on the first light path between the light source and the optical light pipe, and wherein each of the OSL sensor comprises an optically stimulated luminescent material (OSLM) mounted in one or more cylindrical cup-shaped energy compensating filters. - View Dependent Claims (13)
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17. A device comprising a filter optic assembly comprising the following components:
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an assembly mount bottom; an assembly mount top; an optical filter for filtering out lights of selected wavelength; and a dichroic mirror aligned with the optical filter, wherein the assembly mount bottom and assembly mount top together enclose the optical filter and dichroic mirror, wherein the optical filter passes stimulation light having a wavelength that will stimulate an optically stimulated luminescent material (OSLM), wherein the dichroic mirror is positioned so that the stimulation light passes there through, wherein the dichroic mirror is positioned to reflect light emitted by the OSLM when the OSLM is stimulated by the stimulation light, and wherein the device comprises; a lower gasket sandwiched between the assembly mount bottom and the optical filter; a middle gasket sandwiched between the optical filter and the dichroic mirror; and an upper gasket sandwiched between the dichroic mirror and the assembly mount top, wherein the lower gasket, middle gasket and upper gasket are each comprised of a resilient material and each include an opening through which light may pass. - View Dependent Claims (18, 19, 20)
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Specification