公开(公告)号：US5081540A

公开(公告)日：1992-01-14

申请号：US511577

申请日：1990-04-20

申请人： Eric Dufresne ,  Pierre Chavel ,  Gabriel Sirat

发明人： Eric Dufresne ,  Pierre Chavel ,  Gabriel Sirat

IPC分类号： G03H1/06

CPC分类号： G03H1/06 ,  G03H1/0493

摘要： A holographic apparatus of the type comprising a conoscopic system including a birefringent crystal inserted between two polarizers, wherein the apparatus also includes an aperture angle limiter inserted on the path of the light rays and wherein one of the birefringent crystal and the aperture angle limiter is disposed off the optical axis of the apparatus.

摘要翻译： 一种包括插入在两个偏振器之间的双折射晶体的锥视系统的全息装置，其中该装置还包括插入在光线路径上的孔径角限制器，并且其中布置双折射晶体和孔径角限制器之一 离开设备的光轴。

公开(公告)号：US4976504A

公开(公告)日：1990-12-11

申请号：US455988

申请日：1989-12-22

申请人： Gabriel Sirat ,  Eric Dufresne ,  Didier Charlot ,  Alain Maruani

发明人： Gabriel Sirat ,  Eric Dufresne ,  Didier Charlot ,  Alain Maruani

IPC分类号： G03H1/06

CPC分类号： G03H1/06

摘要： A method of generating a quasi-complex hologram using incoherent light and a conoscope system comprising a birefringent crystal (30) inserted between two circular polarizers (10, 20), the method comprising the following steps: (i) recording a plurality of different conoscopic holograms of the same object without relative displacement thereof and with respective different polarization configurations; and (ii) combining the various conoscopic holograms obtained in this way in order to remove the bias and the conjugate image. The invention also relates to a device for implementing the method.

摘要翻译： 一种使用非相干光产生准复杂全息图的方法和包括插入在两个圆偏振器（10,20）之间的双折射晶体（30）的窥镜系统的方法，所述方法包括以下步骤：（i）记录多个不同的内窥镜 相同物体的全息图，其相对位移不同，并具有不同的偏振结构; 和（ii）组合以这种方式获得的各种圆锥形全息图，以便去除偏置和共轭图像。 本发明还涉及一种用于实现该方法的装置。

公开(公告)号：US5081541A

公开(公告)日：1992-01-14

申请号：US511552

申请日：1990-04-20

申请人： Gabriel Sirat ,  Henri Maitre

发明人： Gabriel Sirat ,  Henri Maitre

IPC分类号： G01C11/02 ,  G03H1/06

CPC分类号： G03H1/06 ,  G01C11/02

摘要： A holographic method of the type implementing a conoscopic system including a birefrigent crystal inserted between two polarizers and a photosensitive element, wherein the method includes a step consisting in inserting one-dimensional optical means on the path of the light rays such that the conoscopic system only collects light that is parallel or quasi-parallel to a plane including the axis of the conoscopic system. The invention also provides apparatus for implementing the method.

摘要翻译： 一种实现包括插入在两个偏振器和感光元件之间的双折射晶体的锥形系统的类型的全息方法，其中该方法包括在光线的路径上插入一维光学装置，使得仅仅仅使用内窥镜系统 收集平行或准平行于包括圆锥镜系统轴线的平面的光。 本发明还提供了实现该方法的装置。

公开(公告)号：US20070171432A1

公开(公告)日：2007-07-26

申请号：US11488176

申请日：2006-07-14

申请人： Daniel Neuhauser ,  Gabriel Sirat

发明人： Daniel Neuhauser ,  Gabriel Sirat

IPC分类号： G01B11/14

CPC分类号： G03F7/70966 ,  G02B1/02 ,  G03F7/70633

摘要： A method and apparatus for accurately retrieving the position of an optical feature. The method uses the optical properties of biaxial crystals to conically refract the optical feature and transform the image of the optical feature to a circular ring structure. The position of the optical feature is then calculated by locating a center point associated with the circular ring structure.

摘要翻译： 一种用于准确地检索光学特征的位置的方法和装置。 该方法采用双轴晶体的光学特性，将光学特征圆锥折射，并将光学特征的图像转换为圆环结构。 然后通过定位与圆环结构相关联的中心点来计算光学特征的位置。

公开(公告)号：US20070293769A1

公开(公告)日：2007-12-20

申请号：US11829471

申请日：2007-07-27

申请人： Michael Doherty ,  Yitzhak Daniel ,  Eli Zeitlin ,  Karol Sanilevici ,  Gabriel Sirat ,  Gregory Agronik

发明人： Michael Doherty ,  Yitzhak Daniel ,  Eli Zeitlin ,  Karol Sanilevici ,  Gabriel Sirat ,  Gregory Agronik

IPC分类号： A61N5/06

CPC分类号： A61C9/0053 ,  A61C13/0004 ,  G01B11/24

摘要： Methods for digitizing complex surfaces of dental objects such as impressions of dental surfaces and shapes. While an impression mold is being scanned by translation along a known trajectory, typically in a plane, the line of sight of a distance probe is directed toward successive positions on the surface of the impression mold, such as by a periodic series of reflecting surfaces characterized by normal vectors at distinct non-orthogonal angles with respect to their axis of symmetry. One or more reference objects are scanned using the same translation and mirror positioning systems. Gathered coordinate data are processed to apply angular corrections and combined to form a single distortion-corrected image of the impression mold. An apparatus and methods are provided for measuring both sides of a dental object separately, and then registering the two sides relative to each other in a digital representation of the object.

摘要翻译： 数字化牙科物体的复杂表面的方法，例如牙齿表面和形状的印模。 当通过沿着已知轨迹（通常在平面中）的平移扫描印模时，距离探头的视线指向压印模具表面上的连续位置，例如通过周期性的一系列反射表面 通过相对于其对称轴线的不同非正交角度的法向矢量。 使用相同的翻译和镜像定位系统扫描一个或多个参考对象。 处理收集的坐标数据以应用角度校正并组合以形成压印模具的单个失真校正图像。 提供了用于分别测量牙科物体的两侧，然后以对象的数字表示相对于彼此对准的装置和方法。

公开(公告)号：US4602844A

公开(公告)日：1986-07-29

申请号：US655748

申请日：1984-10-01

申请人： Gabriel Sirat ,  Demetri Psaltis

发明人： Gabriel Sirat ,  Demetri Psaltis

IPC分类号： G03H1/06

CPC分类号： G03H1/0493 ,  G03H1/06 ,  Y10S359/90

摘要： A hologram is recorded on a recording medium with polarized, monochromatic and incoherent light by passing the light from image points through an anisotropic medium and a polarization analyzer. A difference in phase retardation occurs for each of orthogonally polarized ordinary and extraordinary light waves which set up a transfer function of diffraction pattern at the film for recordation. The image can be reconstructed with monochromatic light passed back through the recording system, or with coherent light by illuminating the film directly to form the image on the opposite side at a position in space corresponding to the original point of the image recorded.

摘要翻译： 通过使来自图像点的光通过各向异性介质和偏振分析器，将全息图记录在具有偏振，单色和非相干光的记录介质上。 正交偏振普通和非常光波中的每一个发生相位延迟的差异，其在胶片上建立衍射图案的传递函数用于记录。 可以用通过记录系统返回的单色光或通过照相胶片直接在相对侧上形成相对于记录的图像的原始点的空间的位置处的相干光来重建图像。

公开(公告)号：US20060126067A1

公开(公告)日：2006-06-15

申请号：US10542865

申请日：2004-01-21

申请人： Gabriel Sirat ,  Daniel Neuhauser ,  Kalman Wilner ,  David Vaknin

发明人： Gabriel Sirat ,  Daniel Neuhauser ,  Kalman Wilner ,  David Vaknin

IPC分类号： G01J4/00

CPC分类号： G01N21/21 ,  G01J3/447

摘要： Apparatus for analyzing light having at least one wavelength, the apparatus comprising: (a) a light deflector for deflecting the light so as to provide a deflected light beam characterized by at least one wavelength-dependent angle, respectively corresponding to the at least one wavelength of the light; (b) an encoder, capable of encoding the deflected light beam so as to provide an encoded light beam characterized by at least one angle-dependent polarization state, respectively corresponding to the at least one wavelength-dependent angle; and (c) a decoder, for decoding the encoded light beam so as to determine at least one spectral component of the light.

公开(公告)号：US5453969A

公开(公告)日：1995-09-26

申请号：US238756

申请日：1994-05-04

申请人： Demetri Psaltis ,  David Marx ,  Gabriel Sirat

发明人： Demetri Psaltis ,  David Marx ,  Gabriel Sirat

IPC分类号： G11B7/005 ,  G11B7/013 ,  G11B7/13 ,  G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1365 ,  G11B7/005 ,  G11B7/13 ,  G11B7/24085 ,  G11B7/24088 ,  G03H1/0493

摘要： An optical storage medium constitutes a substrate imprinted with optically detectable pits, each of the pits having one of a set of predetermined pit depths, each of the pits representing a number of binary bits corresponding to the number of the predetermined pit depths in the set. The pit depth is sensed unambiguously with a conoscopic holography sensor by changing the polarization of a polarized reflected beam in accordance with its angle of propagation and sensing an intensity pattern produced after the reflected beam passes through a polarized analyzer. Alternatively, using a confocal microscopy sensor, light from either the deepest or most shallow pit depth is focused on a small pin hole in an opaque surface, and a single detector measures the light intensity on the other side of the pin hole, the light intensity being a direct measure of the pit depth. The capacity of an optical memory such as a CD disk player is increased as much as four or five times by pit-depth encoding the disk, so that each pit location represent a number of bits. For example, a standard pit depth of 3 micrometers in a CD disk is divided into 0.1 micron steps so that each pit represents nearly 5 bits, providing a nearly five-fold increase in disk capacity.

摘要翻译： 光学存储介质构成印有光可检测凹坑的基片，每个凹坑具有一组预定凹坑深度中的每一个凹坑，每个凹坑表示与组中预定凹坑深度的数量相对应的二进制位数。 通过根据其传播角度改变偏振反射光束的偏振并感测在反射光束通过偏振分析器之后产生的强度图案，通过锥视全息传感器明确地感测凹坑深度。 或者，使用共聚焦显微镜传感器，来自最深或最浅浅凹坑深度的光聚焦在不透明表面中的小针孔上，单个检测器测量针孔另一侧的光强度，光强度 是对坑深度的直接测量。 诸如CD盘播放器之类的光学存储器的容量通过对盘进行凹坑深度编码而增加多达四到五次，使得每个凹坑位置表示多个位。 例如，将CD盘中的3微米的标准凹坑深度分为0.1微米级，使得每个凹坑表示近5位，提供磁盘容量增加近5倍。

公开(公告)号：US07515262B2

公开(公告)日：2009-04-07

申请号：US10542865

申请日：2004-01-21

申请人： Gabriel Sirat ,  Daniel Neuhauser ,  Kalman Wilner ,  David Vaknin

发明人： Gabriel Sirat ,  Daniel Neuhauser ,  Kalman Wilner ,  David Vaknin

IPC分类号： G01J3/02 ,  G01J3/30

CPC分类号： G01N21/21 ,  G01J3/447

摘要： Apparatus for analyzing light having at least one wavelength, the apparatus comprising: (a) a light deflector for deflecting the light so as to provide a deflected light beam characterized by at least one wavelength-dependent angle, respectively corresponding to the at least one wavelength of the light; (b) an encoder, capable of encoding the deflected light beam so as to provide an encoded light beam characterized by at least one angle-dependent polarization state, respectively corresponding to the at least one wavelength-dependent angle; and (c) a decoder, for decoding the encoded light beam so as to determine at least one spectral component of the light.

摘要翻译： 用于分析具有至少一个波长的光的装置，所述装置包括：（a）用于偏转光的光偏转器，以便提供偏转的光束，其特征在于分别对应于至少一个波长的至少一个波长相关的角度 的光; （b）编码器，其能够编码偏转的光束，以便提供分别对应于至少一个与波长相关的角度的至少一个依赖于角度的偏振状态的编码光束; 和（c）解码器，用于对编码的光束进行解码，以便确定光的至少一个光谱分量。

公开(公告)号：US5291314A

公开(公告)日：1994-03-01

申请号：US736291

申请日：1991-07-29

申请人： Aharon Agranat ,  Gabriel Sirat

发明人： Aharon Agranat ,  Gabriel Sirat

IPC分类号： G02F1/17 ,  G02F1/01 ,  G02F1/21 ,  G03C1/725 ,  G03H1/06 ,  G02B5/23 ,  G02B1/02 ,  G02F1/35 ,  G03H1/00

CPC分类号： G03H1/06 ,  G02F1/21 ,  G02F1/0126 ,  G02F2001/213 ,  G02F2202/13 ,  G02F2202/14

摘要： The invention relates to a spatial light modulator device comprising a photo-refractive crystal addressed by means of a write light beam and a read light beam. The crystal is placed in the cavity of an interferometer system having a transmittivity-optical path length characteristic of steep slope so as to give rise to a dynamic range of maximum transmittivity variation for minimum variation in the refractive index or optical path length of the photo-refractive crystal. The device is applicable to conoscopic holography systems of large dynamic range and to pattern recognition in real time.

摘要翻译： 本发明涉及一种包括通过写光束和读光束寻址的光折射晶体的空间光调制器装置。 将晶体放置在具有陡斜率的透射率 - 光路长度特性的干涉仪系统的空腔中，以便产生最大透射率变化的动态范围，用于光敏元件的折射率或光程长度的最小变化， 折射晶体。 该装置适用于动态范围大的全息全息系统，实时模式识别。