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21. 发明授权

US5361383A Optical fiber having internal partial mirrors and interferometer using same 失效
标题翻译：具有内部部分反射镜和使用其的干涉仪的光纤
公开(公告)号：US5361383A
公开(公告)日：1994-11-01
申请号：US783798
申请日：1991-11-30
申请人： David B. Chang , Victor Vali
发明人： David B. Chang , Victor Vali
IPC分类号： G02B6/28 , G01B9/02 , G02B6/00 , G02B6/26
CPC分类号： G02B6/02052
摘要： An optical fiber disposed to partially internally reflect optical energy passing therethrough is disclosed herein. The optical fiber 10 of the present invention includes an internal partial mirror disposed to partially transmit and to partially reflect optical energy incident thereon. The internal mirror is effectively realized at an interface I of first and second fiber segments 14 and 18. The first fiber segment 14 includes a first core region 22 which circumscribes a longitudinal axis X. The first core region 22 is of a first cross-sectional area perpendicular to the longitudinal axis X. The inventive fiber 10 further includes a second fiber segment 18 in optical communication with the first fiber segment 14. The second fiber segment 18 includes a second core region 24 which circumscribes the longitudinal axis X, wherein the second core region 24 is of a second cross-sectional area perpendicular thereto.
摘要翻译：本文公开了设置成部分内部反射通过其的光能的光纤。本发明的光纤10包括设置成部分地透射并部分地反射入射在其上的光能的内部部分镜。在第一和第二纤维段14和18的界面I处有效地实现内部反射镜。第一纤维段14包括限定纵向轴线X的第一纤芯区域22.第一纤芯区域22是第一横截面本发明的纤维10还包括与第一纤维段14光学连通的第二纤维段18.第二纤维段18包括限定纵轴X的第二芯区24，其中第二纤维芯区域24具有与其垂直的第二横截面区域。

22. 发明授权

US5235179A Evanescent wave liquid level sensor with density compensation 失效
标题翻译：渐近波液位传感器具有密度补偿
公开(公告)号：US5235179A
公开(公告)日：1993-08-10
申请号：US764754
申请日：1991-09-24
申请人： David B. Chang , Victor Vali , Keith V. Pearson , Albert F. Lawrence
发明人： David B. Chang , Victor Vali , Keith V. Pearson , Albert F. Lawrence
IPC分类号： G01F23/292 , G01N9/24 , G01N21/55 , G01N21/85
CPC分类号： G01F23/292 , G01N21/552 , G01N9/24 , Y10S250/90 , Y10S250/905
摘要： An evanescent wave liquid level sensor for measuring the density-compensated level of a liquid in a container. The sensor employs an eccentric core optical fiber fully immersed in the liquid to be measured. Light is injected into one end of the fiber. Some of the light will be lost due to evanescent wave losses. Changes in the ratio of the intensity of the input light and the reflected light are due solely to changes in the density of the liquid. Changes in the liquid density can then be used to compensate a liquid level measurement. Since the liquid temperature is related to its density, the sensor can also be used to measure changes in the liquid temperature.
摘要翻译：一种ev逝波液位传感器，用于测量容器中液体的密度补偿水平。传感器采用完全浸入待测液体的偏心芯光纤。光被注入纤维的一端。一些光将由于ev逝的波浪损失而消失。输入光的强度与反射光的比例的变化仅由于液体密度的变化。然后可以使用液体密度的变化来补偿液位测量。由于液体温度与其密度有关，传感器也可用于测量液体温度的变化。

23. 发明授权

US5233673A Output steerable optical phased array 失效
标题翻译：输出可转换光学相位阵列
公开(公告)号：US5233673A
公开(公告)日：1993-08-03
申请号：US773471
申请日：1991-10-09
申请人： Victor Vali , David B. Chang , Albert F. Lawrence
发明人： Victor Vali , David B. Chang , Albert F. Lawrence
IPC分类号： G02F1/035 , G01S7/48 , G02F1/01 , G02F1/295 , G11B7/135 , H01S5/40
CPC分类号： G02F1/2955 , G01S7/48 , H01S5/40 , G02F1/0134 , G02F1/035 , G02F2202/20 , G02F2203/24
摘要： Optical phased arrays employing a large number of light emitters and optical phase delays between adjacent emitters to steer and focus an optical beam from the contributions of all the light emitters. The array can include a laser oscillator (22) as the light source, with the laser light being conducted via optical waveguides (26, 30 and 32) into optical fibers (34), with phase delays being effected by piezoelectric or electro-optic effects on the optical waveguides. The array can be used in a low cost display device for generating optical images or in an optical memory.
摘要翻译：在相邻发射器之间采用大量光发射器和光相位延迟的光相位阵列，以引导和聚焦来自所有发光体的贡献的光束。阵列可以包括作为光源的激光振荡器（22），激光通过光波导（26,30和32）传导到光纤（34）中，相位延迟通过压电或电光效应在光波导上。该阵列可以用于低成本显示装置中以产生光学图像或在光学存储器中。

24. 发明授权

US5224188A Eccentric core optical fiber 失效
标题翻译：偏心芯光纤
公开(公告)号：US5224188A
公开(公告)日：1993-06-29
申请号：US977738
申请日：1992-11-12
申请人： Victor Vali
发明人： Victor Vali
IPC分类号： G02B6/02
CPC分类号： G02B6/02
摘要： An eccentric core optical fiber 10 having a cross-sectional area sufficiently large to afford ease of manipulation, yet deposed to operate in an evanescent mode, is disclosed herein. The inventive optical fiber 10 includes a fiber core 20 of a first index of refraction. The fiber core 20 circumscribes a first longitudinal axis. The optical fiber 10 of the present invention further includes fiber cladding material 30 of a second index of refraction chosen to be less than the first index of refraction. The cladding material 30 circumscribes both a fiber core 20 and a second longitudinal axis oriented parallel to but not coincident with the first longitudinal axis.
摘要翻译：本文公开了一种偏心芯光纤10，其具有足够大的横截面积以便于易于操作，但被放弃以ev逝模式操作。本发明的光纤10包括具有第一折射率的光纤芯20。纤维芯20限定第一纵向轴线。本发明的光纤10还包括选择为小于第一折射率的第二折射率的光纤包层材料30。包层材料30限定纤维芯20和与第一纵向轴线平行但不重合的第二纵向轴线。

25. 发明授权

US5222161A Method and apparatus for compressing a light pulse 失效
标题翻译：用于压缩光脉冲的方法和装置
公开(公告)号：US5222161A
公开(公告)日：1993-06-22
申请号：US840223
申请日：1992-02-24
申请人： David B. Chang , Victor Vali
发明人： David B. Chang , Victor Vali
IPC分类号： G02F1/01 , G02F1/035 , G02F2/00 , H01S3/00 , H01S3/10
CPC分类号： H01S3/0057 , G02F1/0134 , G02F1/035 , G02F2203/26
摘要： This invention discloses a method and apparatus for shortening the length of a pulse of light. Generally, the method entails altering the index of refraction of an optical medium (14) through which the pulse of light is traveling at an area of the medium (14) where the front end of the pulse of light is located, such that the front end of the pulse of light travels slower than the back end, thus enabling the back end to catch up with the front end in order to shorten the length of the pulse. To accomplish this, it is proposed to generate an electric field across the optical medium (14) by a charge carrying medium (12) positioned relative to the optical medium (14), such that the index of refraction is altered by the electro-optic effect. In addition, it is possible to alter the index of refraction of the optical medium (14) by surrounding the optical medium (14) with a piezoelectric material (20) and applying an electric field to the piezoelectric material (20) such that the piezoelectric material (20) compresses the optical medium (14), thus altering the index of refraction.
摘要翻译：本发明公开了一种缩短光脉冲长度的方法和装置。通常，该方法需要改变在光脉冲的前端所在的介质（14）的区域上行进光的介质（14）的折射率，使得前面光脉冲的末端比后端的行进速度慢，从而能使后端跟上前端，以缩短脉冲的长度。为了实现这一点，提出通过相对于光介质（14）定位的电荷传输介质（12）在光学介质（14）之间产生电场，使得折射率被电光影响。此外，通过用压电材料（20）围绕光学介质（14）并且向压电材料（20）施加电场，可以改变光学介质（14）的折射率，使得压电材料（20）压缩光学介质（14），从而改变折射率。

26. 发明授权

US5210779A Apparatus and method for focusing hard X-rays 失效
标题翻译：用于聚焦硬X射线的装置和方法
公开(公告)号：US5210779A
公开(公告)日：1993-05-11
申请号：US736153
申请日：1991-07-26
申请人： Victor Vali , David B. Chang , Albert F. Lawrence
发明人： Victor Vali , David B. Chang , Albert F. Lawrence
IPC分类号： G03F7/20 , G21K1/06 , H01L21/027
CPC分类号： G21K1/06 , G03F7/70158 , G03F7/70316 , G21K2201/062
摘要： A dislocation-free, composite-substance crystal having a lattice constant which decreases over the length of the crystal (38) convergently focuses beams of hard X-rays or gamma rays (11). A single-substance, dislocation-free crystal (34) collimates diffuse beams of hard X-rays or gamma rays and projects the collimated radiation (11') to the focusing crystal (38). A mask (36) is interposed between the collimating crystal (34) and the focusing crystal (38) causing the collimated radiation (11'') to carry an image of the mask (36). The focusing crystal (38) produces a convergent hard X-ray beam or gamma ray beam (11''') to focus a reduced image of the mask (36) upon the photosensitive layer (41) of a wafer (39). An example of a dislocation-free crystal having a lattice constant which decreases over its length (38) is a dislocation-free silicon-germanium crystal (20) wherein the proportion of germanium to silicon varies over the length of the crystal.
摘要翻译：具有在晶体（38）的长度上减小的晶格常数的无位错复合材料晶体会聚地聚焦硬X射线或γ射线（11）的光束。单体无位错晶体（34）准直了硬X射线或伽马射线的漫射束，并将准直辐射（11'）投影到聚焦晶体（38）。在准直晶体（34）和聚焦晶体（38）之间插入有使准直辐射（11“）携带掩模（36）的图像的掩模（36）。聚焦晶体（38）产生会聚的硬X射线束或伽马射线束（11“），以将掩模（36）的还原图像聚焦在晶片（39）的感光层（41）上。具有在其长度上减小的晶格常数（38）的无位错晶体的实例是无位错硅 - 锗晶体（20），其中锗与硅的比例在晶体长度上变化。

27. 发明授权

US5164608A Plural wavelength fiber optic liquid level sensor for multiple liquids 失效
标题翻译：用于多种液体的多波长光纤液位传感器
公开(公告)号：US5164608A
公开(公告)日：1992-11-17
申请号：US722587
申请日：1991-06-27
申请人： Victor Vali , David B. Chang
发明人： Victor Vali , David B. Chang
IPC分类号： G01F23/292
CPC分类号： G01F23/292
摘要： A fiber optic liquid level sensor for measuring the level of multiple immiscible liquids in a container (20). An end of an optical fiber (24) is immersed in the liquids in the container (20). Light is injected into the other end of the fiber. The ratio of transmitted to the reflected light is dependent on the evanescent mode losses to the liquids in the container. The levels of the liquids are derived from the losses, since the absorption per unit length of the fiber is different for each liquid. The relative amounts of liquids in the container are obtained from the amount of absorption.
摘要翻译：一种用于测量容器（20）中的多个不混溶液体的水平的光纤液位传感器。将光纤（24）的一端浸入容器（20）中的液体中。光被注入纤维的另一端。传输到反射光的比例取决于容器中液体的ev逝模式损耗。液体的含量来自于损失，因为纤维每单位长度的吸收对于每种液体是不同的。容器中的液体的相对量由吸收量获得。

28. 发明授权

US5012499A .gamma.-ray detecting device using dislocation-free crystal 失效
标题翻译：伽马射线检测装置使用无位错晶体
公开(公告)号：US5012499A
公开(公告)日：1991-04-30
申请号：US423830
申请日：1989-10-19
申请人： Victor Vali , David B. Chang
发明人： Victor Vali , David B. Chang
IPC分类号： G01N23/20 , G01T1/00 , G01T1/36
CPC分类号： G01T1/36
摘要： A .gamma.-ray detector that comprises a dislocation-free single crystal. Typical crystals include silicon and germanium, for example. The crystal is surrounded by an active shield that functions as an anticoincidence counter and a .gamma.-ray detector is disposed adjacent the crystal in order to detect received -65 -rays. The .gamma.-ray detector comprises an imaging proportional counter, scintillation counter, or a .gamma.-ray detecting charge coupled device, for example. The .gamma.-ray detector of the present invention is based on the Bormann effect, which is the anomalous transmission of .gamma.-rays through dislocation free single crystals at the Bragg angle. For extended sources, data processing is provided to separate the directional and wavelength dependence of the intensity variation. The .gamma.-ray detector has angular resolution of at least one arc second and may have an effective aperture of several square meters. Reduction in background radiation, which is essentially determined by the crystal thickness, may be made quite large, greater than 10.sup.12. Consequently, the use of the present invention makes it possible to detect a weak .gamma.-ray source even in the presence of a large isotropic background.

29. 发明授权

US5004914A Fiber-optic interferometric chemical sensor 失效
标题翻译：光纤干涉化学传感器
公开(公告)号：US5004914A
公开(公告)日：1991-04-02
申请号：US511666
申请日：1990-04-20
申请人： Victor Vali , David B. Chang , Patrick C. Brownrigg
发明人： Victor Vali , David B. Chang , Patrick C. Brownrigg
IPC分类号： G01D5/26 , G01D5/353 , G01J9/02 , G01N21/45 , G01N21/78 , G01N33/543 , H01L41/12
CPC分类号： G01D5/35303 , G01N21/45 , G01D5/266 , H01L41/12
摘要： A fiber-optic interferometric chemical sensor for detecting chemical vapors in the air. The chemical sensor 10 includes a light source 12 which outputs an optical signal to a first beam splitter 14. The first beam splitter 14 splits the optical signal into first and second components and transfers the optical signal over sensor and reference optical fibers 20 and 22 respectively. The optical fibers 20 and 22 are bonded to the sensor and reference magnetostrictive substrates 24 and 26, which oscillate in response to an oscillating electromagnetic field generated by a coil 28 circumscribing the substrates 24 and 26. The sensor substrate 24 is further coated with a substance to facilitate collection thereon of molecules associated with the chemical vapor being detected. The optical outputs of the optical fibers bonded to the substrates 24 and 26 are then output to second and third beam splitters 16 and 18 respectively, and first and second beam combiners 32 and 34 respectively. The beam splitters 16 and 18 and beam combiners 32 and 34 operate cooperatively to provide an interferogram which is output to a signal processing circuit 44. The signal processing circuit provides an electrical signal indicative of the collection on sensor substrate 24 of molecules of the chemical vapor being detected, and outputs the signal to a display system 46.

30. 发明授权

US4013365A Laser gyroscope 失效
标题翻译：激光陀螺仪
公开(公告)号：US4013365A
公开(公告)日：1977-03-22
申请号：US585981
申请日：1975-06-11
申请人： Victor Vali , Richard W. Shorthill , Raymond Goldstein , Reuben S. Krogstad
发明人： Victor Vali , Richard W. Shorthill , Raymond Goldstein , Reuben S. Krogstad
IPC分类号： G01C19/64 , G01C19/66 , G01C19/72 , G01P3/36 , G01P9/00 , H01S3/083 , G01B9/02
CPC分类号： H01S3/083 , G01C19/64 , G01C19/66
摘要： An apparatus for determining rotation of an area including optical apparatus for optically circumscribing the area and to guide laser radiation counter-directionally around the circumscribed area. Differences that develop between the clockwise and counterclockwise laser radiation as a function of the rotation of the area are detected to determine the rotation of the area. The optical apparatus includes an optical fiber waveguide which may function as a laser cavity or a ring inferometer path. The ring inferometer may also be provided by at least three reflective surfaces.
摘要翻译：一种用于确定包括光学装置的区域的旋转的装置，用于光学地外接该区域并且围绕该外接区域反向引导激光辐射。检测在顺时针和逆时针的激光辐射之间产生的作为区域旋转的函数的差异，以确定该区域的旋转。该光学装置包括可用作激光腔或环形测量仪路径的光纤波导。环形测量仪也可以由至少三个反射表面提供。

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