公开(公告)号：US5308986A

公开(公告)日：1994-05-03

申请号：US992140

申请日：1992-12-17

Applicant: James K. Walker

Inventor： James K. Walker

IPC: G01T1/203 ,  G01T5/08

CPC classification number: G01T1/201 ,  G01T1/203 ,  G02B6/02033

Abstract: A new scintillating optical fiber is used in an array as a scintillator plate for imaging with high energy radiation, particles and the like. The scintillating optical fiber has an inner plastic core fiber which is transparent to visible radiation and has an index of refraction of about 1.45 or greater. The inner plastic core fiber has a plastic cladding material which has an index of refraction less than that of the inner plastic core fiber. The inner plastic core fiber contains a polymeric matrix material; a metal moiety; and an organic quench-resistant fluorescent material. The scintillator plates are useful in producing high efficiency and high resolution radiographic systems for x-ray medical diagnosis or non-destructive inspection as well as non-destructive inspection with thermal neutrons. In medical x-ray applications, such as mammography, the need for lower doses of x-rays for a given image quality is met and exceeded by the higher detection efficiency of the scintillator plates and their associated electronic read-out system.

Abstract translation: 在阵列中使用新的闪烁光纤作为用于利用高能量辐射，粒子等进行成像的闪烁体板。 闪烁光纤具有对可见光辐射透明并具有约1.45或更高的折射率的内部塑料芯光纤。 内部塑料芯纤维具有塑料包层材料，其折射率小于内部塑料芯纤维的折射率。 内部塑料芯纤维含有聚合物基质材料; 金属部分; 和有机防淬火荧光材料。 闪烁体板可用于生产用于X射线医学诊断或非破坏性检查的高效率和高分辨率射线照相系统以及具有热中子的非破坏性检查。 在诸如乳房X线照相术的医学x射线应用中，由于闪烁体板及其相关联的电子读出系统的更高的检测效率，满足并超过给定图像质量的较低剂量的x射线的需要。

公开(公告)号：US5010833A

公开(公告)日：1991-04-30

申请号：US240859

申请日：1988-09-06

Applicant: James T. Spencer, III ,  James K. Walker

Inventor： James T. Spencer, III ,  James K. Walker

IPC: D05B35/02 ,  D05B35/10

CPC classification number: D05B35/02 ,  D05B35/102 ,  D05D2305/04

Abstract: An edge detector for detecting the edge of fabric in a textile folding or guiding device for an industrial sewing machine. The detector includes a light source mounted adjacent to one surface of the fabric as the fabric enters the folder. The light source is positioned for directing light onto the surface of the fabric. A photodetector is located adjacent to the light source for receiving light reflected from the surface of the fabric. The photodetector provides an output signal in response to the light reflected from the surface of the fabric which is indicative of the position of the fabric in the folder.

Abstract translation: 一种边缘检测器，用于检测用于工业缝纫机的织物折叠或引导装置中织物的边缘。 当织物进入文件夹时，检测器包括邻近织物的一个表面安装的光源。 光源被定位成将光引导到织物的表面上。 光电检测器位于光源附近以接收从织物表面反射的光。 光电检测器响应于从织物的表面反射的光提供输出信号，其指示织物在文件夹中的位置。

公开(公告)号：US09360567B2

公开(公告)日：2016-06-07

申请号：US14130050

申请日：2012-06-29

Applicant: Youngwook Noh ,  Richard T. Farley ,  James K. Walker

Inventor： Youngwook Noh ,  Richard T. Farley ,  James K. Walker

IPC: G01T1/20 ,  G01T3/06 ,  C09K9/02 ,  G01T1/204 ,  G01T1/203

CPC classification number: G01T1/204 ,  C09K9/02 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1088 ,  G01T1/203 ,  G01T3/06

Abstract: Embodiments incorporate a method and apparatus for detection of radiation. Embodiments detect fast and/or thermal neutrons. Embodiments detect neutrons in high backgrounds of gamma rays. Embodiments can have high sensitivity and/or high gamma discrimination. Embodiments include a given single material that detects fast neutrons and simultaneously detect gamma rays with moderate energy resolution. Embodiments utilize liquid, viscous liquid, gel, and/or solid scintillating materials. Embodiments incorporate a scintillating matrix, such as a liquid, having a highly polar matrix, such as a liquid solvent, dissolved dyes, and a high concentration of a dissolved organo metallic compound. The use of a single material for a large area detector of fast neutrons and gamma rays can provide material and cost benefits.

Abstract translation: 实施例包括用于检测辐射的方法和装置。 实施例检测快速和/或热中子。 实施例检测伽马射线高背景中的中子。 实施例可以具有高灵敏度和/或高伽马鉴别。 实施例包括检测快中子并同时以适度能量分辨率检测伽马射线的给定单一材料。 实施例使用液体，粘稠液体，凝胶和/或固体闪烁材料。 实施例包括具有高极性基质如液体溶剂，溶解染料和高浓度溶解的有机金属化合物的闪烁基质，例如液体。 对于快速中子和γ射线的大面积检测器使用单一材料可以提供材料和成本优势。

公开(公告)号：US08993968B2

公开(公告)日：2015-03-31

申请号：US13430394

申请日：2012-03-26

Applicant: James K. Walker ,  Youngwook Noh ,  Richard T. Farley

Inventor： James K. Walker ,  Youngwook Noh ,  Richard T. Farley

IPC: G01T1/20 ,  C09K11/06 ,  C09K11/02 ,  G01T3/06 ,  G01T1/203 ,  C09K9/02

CPC classification number: G01T1/2033 ,  C09K9/02 ,  C09K11/06 ,  C09K2211/10 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1088 ,  G01T1/203 ,  G01T3/06 ,  G21K4/00

Abstract: Embodiments of the invention provide a scintillator material, a scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material that comprises chromophores. Additional embodiments provide a scintillator material, scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material having one, two, three, or more, organic dyes dissolved therein wherein the polymer material having the one, two, three, or more dyes dissolved therein comprises chromophores. At least one of the dyes, termed the base dye, has a concentration in the range 0.5 to 3.5 mol/L. In a specific embodiment, the base dye has a concentration in the range 1.0 to 3.0 mol/L. This base dye concentration is high enough to achieve a substantial triplet-triplet state annihilation rate despite the negligible diffusion of the dye in the rigid polymer matrix.

Abstract translation: 本发明的实施方案提供闪烁体材料，闪烁体系统和/或使用闪烁体材料或闪烁体系统检测入射辐射的方法，其包含含有发色团的聚合物材料。 另外的实施例提供闪烁体材料，闪烁体系统和/或使用闪烁体材料或闪烁体系统检测入射辐射的方法，其包含溶解有一种，两种，三种或更多种有机染料的聚合物材料，其中聚合物材料 其中溶解有一种，两种，三种或更多种染料包括发色团。 称为碱性染料的至少一种染料的浓度为0.5-3.5mol / L。 在具体实施方式中，碱性染料的浓度为1.0〜3.0mol / L。 尽管染料在刚性聚合物基质中的扩散可忽略不计，但这种基础染料浓度足够高以达到实质的三重态三重态湮灭速率。

公开(公告)号：US07135133B2

公开(公告)日：2006-11-14

申请号：US09833833

申请日：2001-04-12

Applicant: James K. Walker ,  Jacob Ralph Tymianski ,  Bongsoo Lee ,  Stephan A. Tuchman ,  Won Young Choi

Inventor： James K. Walker ,  Jacob Ralph Tymianski ,  Bongsoo Lee ,  Stephan A. Tuchman ,  Won Young Choi

IPC: B29D11/00

CPC classification number: G02B6/02038 ,  B29C47/00 ,  B29C47/0016 ,  B29C47/0023 ,  B29C47/003 ,  B29D11/00682

Abstract: The present invention relates to a method and apparatus for manufacturing plastic optical transmission medium. The subject method and apparatus can produce a variety of optical transmission medium, including for example, graded refractive index polymer optical fiber, graded refractive index rod lens, and step index polymer optical fiber. The subject optical transmission medium have improved characteristics and efficiency, due, at least in part, to better control of the profile of the refractive index distribution and stable high temperature operation of the medium. High efficiency of manufacturing can be achieved by the subject method and apparatus which can permit continuous extrusion at high speed.

公开(公告)号：US5420959A

公开(公告)日：1995-05-30

申请号：US149750

申请日：1993-11-17

Applicant: James K. Walker ,  Jacob R. Tymianski

Inventor： James K. Walker ,  Jacob R. Tymianski

IPC: C08L101/00 ,  G01T1/00 ,  G01T1/203 ,  G01T5/08 ,  G02B6/00 ,  G02B6/02 ,  G02B5/122

CPC classification number: G01T1/201 ,  G01T1/203 ,  G02B6/02033

Abstract: A new scintillating optical fiber is used in an array as a scintillator plate for imaging with high energy radiation, particles and the like. The scintillating optical fiber has an inner plastic core fiber which is transparent to visible radiation and has an index of refraction of about 1.45 or greater. The inner plastic core fiber has a plastic cladding material which has an index of refraction less than that of the inner plastic core fiber. The inner plastic core fiber contains a polymeric matrix material; a metal moiety; and an organic fluorescent material. The scintillator plates are useful in producing high efficiency and high resolution radiographic systems for x-ray medical diagnosis or non-destructive inspection as well as non-destructive inspection with thermal neutrons. In medical x-ray applications, such as mammography, the need for lower doses of x-rays for a given image quality is met and exceeded by the higher detection efficiency of the scintillator plates and their associated electronic read-out system.

Abstract translation: 在阵列中使用新的闪烁光纤作为用于利用高能量辐射，粒子等进行成像的闪烁体板。 闪烁光纤具有对可见光辐射透明并具有约1.45或更高的折射率的内部塑料芯光纤。 内部塑料芯纤维具有塑料包层材料，其折射率小于内部塑料芯纤维的折射率。 内部塑料芯纤维含有聚合物基质材料; 金属部分; 和有机荧光材料。 闪烁体板可用于生产用于X射线医学诊断或非破坏性检查的高效率和高分辨率射线照相系统以及具有热中子的非破坏性检查。 在诸如乳房X线照相术的医学x射线应用中，由于闪烁体板及其相关联的电子读出系统的更高的检测效率，满足并超过给定图像质量的较低剂量的x射线的需要。