专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5051571A Cascaded adaptive optics system 失效
标题翻译：级联自适应光学系统
公开(公告)号：US5051571A
公开(公告)日：1991-09-24
申请号：US947569
申请日：1986-12-02
申请人： Wilbur P. Brown, Jr. , Thomas R. O'Meara , David M. Pepper , Uzi Efron , Bernard H. Soffer
发明人： Wilbur P. Brown, Jr. , Thomas R. O'Meara , David M. Pepper , Uzi Efron , Bernard H. Soffer
IPC分类号： G02B26/06
CPC分类号： G02B26/06
摘要： A cascaded adaptive optics system for correction of aberrations in a light beam. The system includes a plurality of spatial light modulators (SLMs) in a cascaded arrangement to provide an adaptive optics system characterized by wide range, rapid response, and high resolution. The spatial light modulators may be identical or have characteristics that are complementary in providing a combined output that advantageously corrects for aberrations. A conventional adaptive optics system such as a deformable mirror may be used as one or more of the SLMKs. Liquid crystal light valves (LCLVs) may be advantageously used as one or more of the SLMs in the invention. A single LCLV may be cascaded with itself in a multiple-pass configuration by means of suitable reflectors.
摘要翻译：用于校正光束中的像差的级联自适应光学系统。该系统包括多个级联布置的空间光调制器（SLM），以提供以宽范围，快速响应和高分辨率为特征的自适应光学系统。空间光调制器可以是相同的或具有在提供有利地校正像差的组合输出时互补的特征。诸如可变形反射镜的常规自适应光学系统可以用作SLMK中的一个或多个。液晶光阀（LCLV）可以有利地用作本发明中的一个或多个SLM。单个LCLV可以通过适当的反射器以多通道配置与其自身级联。

2. 发明授权

US5048935A Method for adaptive correction of the phase non-uniformity of a liquid crystal light valve 失效
标题翻译：液晶光阀相位不均匀性的自适应校正方法
公开(公告)号：US5048935A
公开(公告)日：1991-09-17
申请号：US947575
申请日：1986-12-24
申请人： Uzi Efron , Bernard H. Soffer , Richard C. Lind , David M. Pepper , Thomas R. O'Meara
发明人： Uzi Efron , Bernard H. Soffer , Richard C. Lind , David M. Pepper , Thomas R. O'Meara
IPC分类号： G01J9/00 , G02B26/06
CPC分类号： G03H1/0005 , G01J9/00 , G02B26/06 , G03H1/2294 , G03H2001/0066 , G03H2225/32
摘要： Apparatus for compensating for inherent distortions in a modified liquid crystal light valve used in an integrated wavefront sensing and wavefront control system for laser optics. A main wavefront sensing and control system utilizes a liquid crystal light valve selected for response speed but having inherent surface non-linearities. A beam from an auxiliary laser is intermittently applied, while the main laser is blocked, to both the fast response LCLV of the main system and to a slower response LCLV of an associated correction system. The second LCLV system corrects for the non-linearities in the surface of the first LCLV and then maintains the stored correction signal for a decay interval which corresponds to several response times of the main LCLV, thus permitting the main LCLV system to perform fast correction of atmospheric aberrations in the laser beam wavefront unaffected by inherent surface non-linearities.
摘要翻译：用于补偿在用于激光光学的集成波前感测和波前控制系统中使用的改进的液晶光阀中的固有失真的装置。主波前感测和控制系统利用了选择响应速度但具有固有表面非线性的液晶光阀。来自辅助激光器的光束在主激光器被阻挡的同时被间歇地施加到主系统的快速响应LCLV和相关校正系统的较慢响应LCLV。第二LCLV系统校正第一LCLV的表面中的非线性，然后将存储的校正信号维持在对应于主LCLV的几个响应时间的衰减间隔，从而允许主LCLV系统执行快速校正激光束波前的大气像差不受固有表面非线性的影响。

3. 发明授权

US4739496A Associative holographic memory apparatus employing phase conjugate mirrors 失效
标题翻译：采用相位共轭反射镜的联想全息存储装置
公开(公告)号：US4739496A
公开(公告)日：1988-04-19
申请号：US786884
申请日：1985-10-11
申请人： Emanuel Marom , Bernard H. Soffer , Yuri Owechko , Gilmore J. Dunning , David M. Pepper , Marvin B. Klein , Richard C. Lind
发明人： Emanuel Marom , Bernard H. Soffer , Yuri Owechko , Gilmore J. Dunning , David M. Pepper , Marvin B. Klein , Richard C. Lind
IPC分类号： G06N3/067 , G11C15/00 , G11C13/04 , G03H1/02
CPC分类号： G06N3/067 , G11C15/00
摘要： Associative holography memory apparatus is disclosed which employs a hologram and two phase conjugate mirrors. The mirrors are arranged to form a conjugate resonator whereby the output image from the apparatus tends to converge to that stored image most closely associated with an input image. Alternate embodiments are described which employ a multiple storage and erasure hologram, and which employ only a single phase conjugate mirror.
摘要翻译：公开了使用全息图和两相共轭反射镜的关联全息记录装置。反射镜被布置成形成共轭谐振器，由此来自设备的输出图像倾向于会聚到与输入图像最紧密相关联的存储图像。描述了采用多重存储和擦除全息图并且仅使用单相共轭反射镜的替代实施例。

4. 发明授权

US5585921A Laser-ultrasonic non-destructive, non-contacting inspection system 失效
标题翻译：激光超声波无损检测系统
公开(公告)号：US5585921A
公开(公告)日：1996-12-17
申请号：US404660
申请日：1995-03-15
申请人： David M. Pepper , Thomas R. O'Meara , Phillip V. Mitchell , Gilmore J. Dunning , Marvin B. Klein
发明人： David M. Pepper , Thomas R. O'Meara , Phillip V. Mitchell , Gilmore J. Dunning , Marvin B. Klein
IPC分类号： G01N29/07 , G01N29/24 , G01B9/02
CPC分类号： G01N29/075 , G01N29/2418 , G01N2291/0422 , G01N2291/0423 , G01N2291/0427
摘要： A laser-ultrasonic inspection system is provided for on-line and off-line inspection of a workpiece. The system utilizes an optical acoustic wave generation and detection system with relatively high spatial resolution and which appreciably reduces the effects of parasitic acoustic coupling. An array of acoustic waves are generated in the workpiece by a short pulse optical transmitter bee with a beam geometry that is tailored to focus the acoustic waves at an inspection site in the workpiece. The acoustic waves that probe the inspection site are then detected by reflecting an optical read-out beam from a surface of the workpiece and optically interfering it with an optical reference beam. The geometry of the optical read-out beam is chosen such that the read-out beam only detects the acoustic waves that arrive from the inspection site (acoustic waves that arrive from other parasitic acoustic sources are out of phase with respect to each other and cancel out). A wavefront compensation system improves acoustic clutter rejection and also improves the signal-to-noise by compensating for phase and amplitude aberrations induced on the optical read-out beam by the optically rough surface of the workpiece.
摘要翻译：提供了一种激光超声波检测系统，用于在线和离线检查工件。该系统利用具有相对较高空间分辨率的光声波产生和检测系统，并明显减少了寄生声耦合的影响。通过短脉冲光发射器蜂在工件中产生声波阵列，其具有适于将声波聚焦在工件的检查位置处的光束几何形状。然后通过从工件的表面反射光学读出光束并用光学参考光学光学干涉来检测探测检查部位的声波。选择光读出光束的几何形状，使得读出光束仅检测从检查位置到达的声波（从其他寄生声源到达的声波相对于彼此异相并取消出）。波前补偿系统改善了声杂波抑制，并且还通过补偿由工件的光学粗糙表面在光学读出光束上感生的相位和幅度像差来改善信噪比。

5. 发明授权

US06285514B1 Lens for angularly overlapping a central portion of an optical beam with an outer portion of the beam 有权
标题翻译：用于将光束的中心部分与梁的外部部分成角度地重叠的透镜
公开(公告)号：US06285514B1
公开(公告)日：2001-09-04
申请号：US09564623
申请日：2000-05-04
申请人： Thomas R. O'Meara , David M. Pepper
发明人： Thomas R. O'Meara , David M. Pepper
IPC分类号： G02B310
CPC分类号： G01D5/26 , G01D5/266 , G01H9/00 , G01N29/2418
摘要： A lens for angularly overlapping a central portion of an optical beam with an outer portion of the beam is disclosed. The lens comprises a lens body having an optical axis, a rear surface on said lens body for receiving an optical beam, and a front surface on said lens body that includes inner and outer portions. The outer surface portion is inclined at a greater angle from the optical axis than the inner surface portion so that the outer portion of a beam transmitted through the lens from its rear surface to said outer surface portion is refracted by a lesser angle than an inner portion of the beam which reaches said inner surface portion. The inner and outer lens surface portions also have an angle between them which causes said inner and outer beam portions to converge and overlap at a non-zero angle forward of the lens, wherein the angle of the outer beam portion to the optical axis is selected to superimpose the inner beam portion and outer beam portion such that optical interference fringe patterns are formed.
摘要翻译：公开了一种用于将光束的中心部分与梁的外部部分成角度地重叠的透镜。透镜包括具有光轴的透镜体，用于接收光束的所述透镜主体上的后表面，以及包括内部和外部的所述透镜主体上的前表面。外表面部分比光轴以比内表面部分更大的角度倾斜，使得透过透镜的光束从其后表面到外表面部分的外部部分被折射比内部部分更小的角度到达所述内表面部分的光束。内透镜表面部分和外透镜表面部分之间也具有一个角度，这使得所述内光束部分和外光束部分在透镜前方非零角度会聚和重叠，其中外光束部分对光轴的角度被选择以将内光束部分和外光束部分叠加以形成光学干涉条纹图案。

6. 发明授权

US5684592A System and method for detecting ultrasound using time-delay interferometry 失效
标题翻译：使用时间延迟干涉法检测超声的系统和方法
公开(公告)号：US5684592A
公开(公告)日：1997-11-04
申请号：US481673
申请日：1995-06-07
申请人： Phillip V. Mitchell , David M. Pepper , Thomas R. O'Meara , Marvin B. Klein , Stephen W. McCahon , Gilmore J. Dunning
发明人： Phillip V. Mitchell , David M. Pepper , Thomas R. O'Meara , Marvin B. Klein , Stephen W. McCahon , Gilmore J. Dunning
IPC分类号： G01H9/00 , G01B9/02
CPC分类号： G01H9/00
摘要： An ultrasound detection system that is relatively insensitive to rough workpiece surfaces, suppresses low frequency noise, and provides high sensitivity without the need for active stabilization. An optical probe beam is reflected and phase modulated by a workpiece surface that is being vibrated by ultrasound. A time-delay interferometer optically interferes the phase modulated probe beam with a time-delayed replica of itself. The optical interference generates optical interference fringes that move in accordance with the workpiece surface velocity. The interference fringes are detected by a non-steady-state photo-electromotive-force (NSS-photo-EMF) detector that generates an output signal when the frequency of fringe motion exceeds a predetermined threshold.
摘要翻译：对粗糙的工件表面相对不敏感的超声波检测系统抑制低频噪声，并提供高灵敏度，而不需要主动稳定。光学探针光束被被超声振动的工件表面反射和相位调制。时间延迟干涉仪通过自身的延时复制光学干涉相位调制探测光束。光学干涉产生根据工件表面速度移动的光学干涉条纹。通过非稳态光电动势（NSS-photo-EMF）检测器检测干涉条纹，当检测条纹运动频率超过预定阈值时，产生输出信号。

7. 发明授权

US5113282A Dual light valve system with selective decoupling of light valves 失效
标题翻译：双光阀系统，具有选择性去耦光阀
公开(公告)号：US5113282A
公开(公告)日：1992-05-12
申请号：US75693
申请日：1987-07-10
申请人： Thomas R. O'Meara , David M. Pepper
发明人： Thomas R. O'Meara , David M. Pepper
IPC分类号： G02B26/06
CPC分类号： G02B26/06 , G02F2203/18
摘要： Apparatus for selectively limiting the response of an auxiliary liquid crystal light valve which is used in a dual liquid crystal light valve laser optics system for correcting inherent liquid crystal light valve distortion by isolating an atmospheric reference beam from the main laser beam in the auxiliary correction system. Two types of isolation are provided: dual bandwith and dual polarization. In the former, the response bandwidth of the auxiliary liquid crystal light valve is shifted to prevent overlap with the bandwidth of an atmospheric reference wavefront. In the dual polarization form of isolation, provision is made for rotating the polarization of only one of the two interacting beams.
摘要翻译：用于选择性地限制用于双液晶光阀激光光学系统的辅助液晶光阀的响应的装置，用于通过在辅助校正系统中隔离主激光束的大气参考光束来校正固有的液晶光阀变形。提供两种类型的隔离：双带通和双极化。在前者中，辅助液晶光阀的响应带宽被移动以防止与大气参考波阵面的带宽重叠。在隔离的双极化形式中，提供仅旋转两个相互作用的波束中的一个的极化。

8. 发明授权

US07262861B1 Ultrasound single-element non-contacting inspection system 失效
标题翻译：超声单元非接触检测系统
公开(公告)号：US07262861B1
公开(公告)日：2007-08-28
申请号：US10852782
申请日：2004-05-24
申请人： David M. Pepper , Thomas R. O'Meara
发明人： David M. Pepper , Thomas R. O'Meara
IPC分类号： G01B11/02
CPC分类号： G01B17/02 , G01B11/06 , G01N21/1702 , G01N29/043 , G01N29/2418 , G01N2291/02827 , G01N2291/02854 , G01N2291/0421
摘要： A laser ultrasonic inspection apparatus and method which enables remote sensing of thickness, hardness, temperature and/or internal defect detection is disclosed. A laser generator impinges a workpiece with light for generating a thermo-elastic acoustic reaction in a workpiece. A probe laser impinges the workpiece with an annularly-shaped probe light for interaction with the acoustic signal in the workpiece resulting in a modulated return beam. A photodetector having a sensitive region for detecting an annularly-shaped fringe pattern generated by an interaction of a reference signal and with the modulated return beam at said sensitive region.
摘要翻译：公开了能够远程检测厚度，硬度，温度和/或内部缺陷检测的激光超声波检查装置和方法。激光发生器用工件照射工件以在工件中产生热弹性声反应。探头激光器用环形探针光照射工件，以与工件中的声信号相互作用，从而产生调制的返回光束。一种光电检测器，具有用于检测通过参考信号的相互作用产生的环形条状图案的敏感区域和在所述敏感区域处的调制返回光束。

9. 发明授权

US4833314A Variable phase stop for use in interferometers 失效
标题翻译：用于干涉仪的可变相位停止
公开(公告)号：US4833314A
公开(公告)日：1989-05-23
申请号：US236343
申请日：1988-08-22
申请人： David M. Pepper , Thomas R. O'Meara
发明人： David M. Pepper , Thomas R. O'Meara
IPC分类号： G01J9/02 , G02F1/13 , G02F1/1343
CPC分类号： G02F1/134309 , G01J9/02 , G02F1/1313
摘要： An electro-optical device (10) is used to alter characteristics of a light beam passing through it. In a particularly preferred embodiment, the device (10) is used as a phase stop having a dynamically variable aperture whose size is defined by the selected application of an electrical potential across one or more concentric, transparent ring-like electrodes (13, 14, 16 and 18). The electro-optical device (10) finds particular utility in a common-path interferometer (40) where fringe visibility is optimized by using suitable servo-electronics (56) to select an appropriate aperture size for the phase stop (10).
摘要翻译：电光装置（10）用于改变通过它的光束的特性。在特别优选的实施例中，装置（10）用作具有动态可变孔径的相位停止器，其尺寸由所选择的跨越一个或多个同心的透明环状电极（13,14， 16和18）。电光装置（10）在公共路径干涉仪（40）中具有特别的用途，其中通过使用合适的伺服电子设备（56）来选择相位停止（10）的适当孔径尺寸来优化边缘可见度。

10. 发明授权

US6087652A Contactless acoustic sensing system with detector array scanning and self-calibration 有权
标题翻译：具有检测器阵列扫描和自校准的非接触式声学传感系统
公开(公告)号：US6087652A
公开(公告)日：2000-07-11
申请号：US351953
申请日：1999-07-12
申请人： Thomas R. O'Meara , David M. Pepper
发明人： Thomas R. O'Meara , David M. Pepper
IPC分类号： G01D5/26 , G01H9/00 , H01J40/14
CPC分类号： G01D5/26 , G01D5/266 , G01H9/00 , G01N29/2418
摘要： A contactless system for imaging an acoustic source within a workpiece directs a preferably annular optical probe beam pattern onto the vibrating workpiece surface, with the vibrationally modulated beam then detected by an array of preferably non-steady-state photo-emf detectors arranged in a similar pattern. The probe beam is scanned over the vibrating surface, either mechanically or through an electronically simulated phased array scheme. Time gating is used to suppress unwanted side-lobes when the individual detector outputs are summed over an appreciable waveband. A self-calibration scheme is also preferably used that provides a quantitative as well as qualitative output. A calibration modulation is imposed on at least one of the probe and reference beams, with the calibration modulation later removed at a post-detector stage and used to normalize the acoustic modulation output. Variations of the self-calibration scheme include reference-beam and time-delay interferometers based upon a calibrating phase modulation, and a photon flux measurement approach based upon a calibrating amplitude modulation.
摘要翻译：用于对工件内的声源进行成像的非接触式系统将优选环形的光学探针光束图案引导到振动的工件表面上，然后通过优选非稳态光电检测器的阵列检测振动调制的光束，其布置在类似的模式。探测光束在机械上或通过电子模拟相控阵列方案在振动表面上扫描。当各个检测器输出相加在可观的波段上时，时间门控用于抑制不需要的旁瓣。还优选使用提供定量和定性输出的自校准方案。对探头和参考光束中的至少一个施加校准调制，随后校准调制在后检测器阶段被移除，并用于对声调制输出进行归一化。自校准方案的变化包括基于校准相位调制的参考光束和时间延迟干涉仪以及基于校准幅度调制的光子通量测量方法。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式