公开(公告)号：US07375887B2

公开(公告)日：2008-05-20

申请号：US10997077

申请日：2004-11-24

申请人： Douglas P. Hansen ,  Raymond Perkins ,  Jim Thorne ,  Eric Gardner

发明人： Douglas P. Hansen ,  Raymond Perkins ,  Jim Thorne ,  Eric Gardner

IPC分类号： G02B5/30

CPC分类号： G02B27/288 ,  G02B5/3058

摘要： An optical system and method for providing a visible light beam with a desired characteristic includes a visible light source producing a visible light beam defining an optical train. An optical element is disposed in the optical train to create a modified beam, and that is capable of introducing an undesired characteristic that continuously transitions across at least a portion of the modified beam. A wire-grid polarizer is disposed in the optical train, and has a plurality of elongated elements with at least a portion that continuously transitions to a different characteristic. The wire-grid polarizer is positioned and oriented in the optical train with the different characteristic corresponding to the undesired characteristic of the modified beam to obtain a visible light beam with a desired characteristic substantially across the visible light beam.

摘要翻译： 用于提供具有期望特性的可见光束的光学系统和方法包括产生限定光学列车的可见光束的可见光源。 光学元件设置在光学系列中以产生修改的光束，并且其能够引入不连续地转过穿过修改的光束的至少一部分的不期望的特性。 线栅偏振器设置在光学系列中，并且具有多个细长元件，其中至少一部分连续地转变到不同的特性。 线栅偏振器被定位并定向在光学系列中，具有对应于修改的光束的不期望特性的不同特性，以获得基本上跨越可见光束的期望特性的可见光束。

公开(公告)号：US07789515B2

公开(公告)日：2010-09-07

申请号：US11749847

申请日：2007-05-17

申请人： Douglas P. Hansen ,  Eric Gardner

发明人： Douglas P. Hansen ,  Eric Gardner

IPC分类号： G03B21/14 ,  G03B21/00 ,  G02B5/30

CPC分类号： G03B21/28

摘要： A folded projection display system includes a wire-grid polarizer placed immediately behind the system's imaging screen. The display system includes an image projector that projects an image beam containing light of a predetermined linear polarization toward the imaging screen. The wire-grid polarizer reflects the light in the image beam away from the screen. The reflected image beam then encounters a ¼-wavelength achromatic retarder that converts the linear polarization to circular polarization. The image beam next hits a mirror that reflects the light back through the ¼-wavelength achromatic retarder, which converts the circular polarization back to linear polarization, with the polarization director rotated 90 degrees from the original polarization direction. The wire-grid polarizer then allows the light to pass through to the image screen.

摘要翻译： 折叠投影显示系统包括紧邻系统成像屏幕后面的线栅偏振器。 显示系统包括将包含预定线性偏振光的图像束投影到成像屏幕的图像投影仪。 线栅偏振器将图像束中的光反射离开屏幕。 反射的图像束然后遇到将线性偏振转换为圆偏振的1/4波长消色差延迟器。 图像光束接下来将通过1/4波长消色差延迟器反射回来的反射镜，其将圆偏振转换回线性偏振，偏振光导向器从原始偏振方向旋转90度。 线栅偏振器然后允许光通过到图像屏幕。

公开(公告)号：US20080055720A1

公开(公告)日：2008-03-06

申请号：US11469241

申请日：2006-08-31

申请人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

发明人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

IPC分类号： G02B5/30

CPC分类号： G02B5/3041 ,  G02B27/283

摘要： An optical data storage system includes a laser diode to produce at least one light beam. An inorganic, dielectric grid polarizing beam splitter is disposable in the light beam to transmit a polarized light beam, and includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers have different refractive indices. At least one of the film layers is discontinuous to form a form birefringent layer with an array of parallel ribs with a pitch of less than 390 nm. A drive carries a disc medium disposed in the polarized light beam to reflect a modified light beam. The grid polarizer is disposable in the modified light beam to separate the modified light beam into a reflected beam and a transmitted beam. A photo-detector is disposable in the reflected or transmitted beam.

摘要翻译： 光学数据存储系统包括产生至少一个光束的激光二极管。 无机介电栅极偏振分束器在光束中是一次性的，以透射偏振光束，并且包括设置在基板上方的一层薄膜层。 每个膜层由无机和电介质的材料形成。 相邻的膜层具有不同的折射率。 至少一个膜层是不连续的，以形成具有间距小于390nm的平行肋阵列的形式双折射层。 驱动器携带设置在偏振光束中的光盘介质以反射修改的光束。 栅极偏振器在修改的光束中是一次性的，以将修改的光束分离成反射光束和透射光束。 光检测器在反射或透射光束中是一次性的。

公开(公告)号：US06243199B1

公开(公告)日：2001-06-05

申请号：US09390833

申请日：1999-09-07

申请人： Douglas P. Hansen ,  Raymond T. Perkins ,  Eric Gardner

发明人： Douglas P. Hansen ,  Raymond T. Perkins ,  Eric Gardner

IPC分类号： G02B2728

CPC分类号： G02B5/3058 ,  Y10S359/90

摘要： A wire grid polarizing beam splitter has a generally parallel arrangement of thin, elongated elements which interact with electromagnetic waves of a source light beam to generally transmit or pass light of one polarization, and reflect light of the other polarization. The arrangement of elements has a throughput greater than approximately 50%, and an extinction greater than approximately 100. In addition, the arrangement of elements has a period less than approximately 0.21 &mgr;m, and a width to period ratio of between approximately 0.25 to 0.76. The elements have a thickness of between approximately 0.05 to 0.5 &mgr;m.

摘要翻译： 线栅偏振分束器具有与源光束的电磁波相互作用的薄的细长元件的大致平行布置，以一般透射或通过一个偏振的光，并且反射另一个极化的光。 元素的布置具有大于约50％的吞吐量，大于约100的消光。此外，元件的布置具有小于约0.21μm的周期，以及约0.25至0.76之间的宽度与周期比。 元件的厚度介于约0.05至0.5μm之间。

公开(公告)号：US20080284984A1

公开(公告)日：2008-11-20

申请号：US11749847

申请日：2007-05-17

申请人： Douglas P. Hansen ,  Eric Gardner

发明人： Douglas P. Hansen ,  Eric Gardner

IPC分类号： G03B21/28

CPC分类号： G03B21/28

摘要： A folded projection display system includes a wire-grid polarizer placed immediately behind the system's imaging screen. The display system includes an image projector that projects an image beam containing light of a predetermined linear polarization toward the imaging screen. The wire-grid polarizer reflects the light in the image beam away from the screen. The reflected image beam then encounters a ¼-wavelength achromatic retarder that converts the linear polarization to circular polarization. The image beam next hits a mirror that reflects the light back through the ¼-wavelength achromatic retarder, which converts the circular polarization back to linear polarization, with the polarization director rotated 90 degrees from the original polarization direction. The wire-grid polarizer then allows the light to pass through to the image screen.

摘要翻译： 折叠投影显示系统包括紧邻系统成像屏幕后面的线栅偏振器。 显示系统包括将包含预定线性偏振光的图像束投影到成像屏幕的图像投影仪。 线栅偏振器将图像束中的光反射离开屏幕。 反射的图像束然后遇到将线性偏振转换为圆偏振的1/4波长消色差延迟器。 图像光束接下来将通过1/4波长消色差延迟器反射回来的反射镜，其将圆偏振转换回线性偏振，偏振光导向器从原始偏振方向旋转90度。 线栅偏振器然后允许光通过到图像屏幕。

公开(公告)号：US20080055722A1

公开(公告)日：2008-03-06

申请号：US11469266

申请日：2006-08-31

申请人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

发明人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

IPC分类号： G02B5/30 ,  G02B27/28

CPC分类号： G02B5/3008 ,  G02B27/283

摘要： An optical polarization beam combiner or separator device includes a first optical beam carrier for carrying a first polarized beam and a second optical beam carrier for carrying a second polarized beam whose polarization is orthogonal to the polarization of the first polarized beam. First and second collimating/focusing lenses are positioned between the first and second optical carriers. A third optical beam carrier for carrying a non-polarized beam positioned on the same side of the two collimating/focusing lenses as the first optical beam carrier. An inorganic, dielectric grid polarizer is disposed between the first and second collimating/focusing lenses, and includes a stack of film layers disposed over a substrate. Adjacent film layers have different refractive indices. At least one of the film layers is discontinuous to form a form birefringent layer with an array of parallel ribs with a pitch of less than 400 nm, and greater than 200 nm.

摘要翻译： 光偏振束组合器或分离器装置包括用于承载第一偏振光束的第一光束载体和用于承载偏振与第一偏振光束的偏振正交的第二偏振光束的第二光束载体。 第一和第二准直/聚焦透镜位于第一和第二光学载体之间。 用于承载位于两个准直/聚焦透镜的同一侧上的非偏振光束作为第一光束载体的第三光束载体。 无机介电栅极偏振器设置在第一和第二准直/聚焦透镜之间，并且包括设置在基板上方的一层薄膜层。 相邻的膜层具有不同的折射率。 膜层中的至少一层是不连续的，以形成具有间距小于400nm，大于200nm的平行肋阵列的形式双折射层。

公开(公告)号：US20080055721A1

公开(公告)日：2008-03-06

申请号：US11469253

申请日：2006-08-31

申请人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

发明人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

IPC分类号： G02B5/30

CPC分类号： G02B5/3008 ,  G02B27/283

摘要： A light recycling system includes a light source capable of producing a visible light beam. An inorganic, dielectric grid polarizing beam splitter is disposable in the light beam to separate the light beam into two light beams of orthogonal polarization orientation including a transmitted beam and a reflected beam. The grid polarizer includes a stack of film layers disposed over the substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers have different refractive indices. At least one of the film layers is discontinuous to form a form birefringent layer with an array of parallel ribs with a period less than approximately 260 nm. Light reorientation means is disposable in the transmitted or reflected beam for changing the polarization orientation of the transmitted or reflected beam.

摘要翻译： 光回收系统包括能产生可见光束的光源。 无机介电栅极偏振分束器在光束中是一次性的，以将光束分离成包括透射束和反射光束的正交偏振取向的两个光束。 栅极偏振器包括设置在衬底上的一层薄膜层。 每个膜层由无机和电介质的材料形成。 相邻的膜层具有不同的折射率。 至少一个膜层是不连续的以形成具有周期小于约260nm的平行肋阵列的形式双折射层。 光重新定向装置在透射或反射光束中是一次性的，用于改变透射或反射光束的偏振取向。

公开(公告)号：US20080055549A1

公开(公告)日：2008-03-06

申请号：US11469226

申请日：2006-08-31

申请人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

发明人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

IPC分类号： G03B21/14

CPC分类号： G03B33/12 ,  G03B21/008 ,  G03B21/2073

摘要： A projection display or modulation optical system includes a spatial light modulator and an inorganic, dielectric grid polarizer. The spatial light modulator selectively encodes image information on a polarized incident light beam and the inorganic, dielectric grid polarizing beam splitter separates the image information from the beam and produces a polarized image bearing light beam. The grid polarizer includes a stack of film layers disposed over a substrate; each film layer being formed of a material that is both inorganic and dielectric; adjacent film layers having different refractive indices; and at least one of the film layers being discontinuous to form a form birefringent layer with an array of parallel ribs with a period less than approximately 260 nm.

摘要翻译： 投影显示或调制光学系统包括空间光调制器和无机介质栅偏振器。 空间光调制器对偏振入射光束上的图像信息进行选择性编码，无机介质栅极偏振分束器将图像信息与光束分离，并产生带偏振图像的光束。 栅极偏振器包括设置在衬底上的膜层的堆叠; 每个膜层由无机和电介质的材料形成; 相邻的膜层具有不同的折射率; 并且至少一个膜层是不连续的以形成具有周期小于约260nm的平行肋阵列的形式双折射层。

公开(公告)号：US06666556B2

公开(公告)日：2003-12-23

申请号：US10238996

申请日：2002-09-09

申请人： Douglas P. Hansen ,  Raymond T. Perkins ,  Eric Gardner

发明人： Douglas P. Hansen ,  Raymond T. Perkins ,  Eric Gardner

IPC分类号： G03B2114

CPC分类号： H04N9/3105 ,  G02B5/3058 ,  G02B27/283 ,  G03B21/005 ,  G03B21/2073 ,  G03B33/12 ,  H04N9/3167

摘要： An image projection system includes one or more wire grid polarizing beam splitters and one or more transmissive arrays. A polarized light beams from a light source and pre-polarizer is directed towards the transmissive array which modulates the polarization of the polarized light beam by selectively altering the polarization of the polarized light beam to encode image information thereon and creating a modulated beam. The modulated beam is directed towards the wire grid polarizing beam splitter which acts as an analyzer to separate the modulated beam into reflected and transmitted beams. A screen is disposed in one of the reflected or transmitted beams to display the encoded image information. The polarizing beam splitter is oriented at an angle with respect to the modulated beam such that the reflected beam is directed away from the transmissive array. A plurality of transmissive arrays can be used for different colors. One or more polarizing beam splitters can act as both analyzers and combiners.

摘要翻译： 图像投影系统包括一个或多个线栅偏振分束器和一个或多个透射阵列。 来自光源和预偏振器的偏振光束被引向透射阵列，透射阵列通过选择性地改变偏振光束的偏振来对其中的图像信息进行调制并产生调制光束来调制偏振光束的偏振。 调制光束被引导到线栅偏振分束器，其用作分析器以将调制的光束分离成反射和透射的光束。 将屏幕设置在反射或发射光束之一中以显示编码图像信息。 偏振分束器相对于调制束成一定角度定向，使得反射光束远离透射阵列。 多个透射阵列可以用于不同的颜色。 一个或多个偏振分束器可以用作分析仪和组合器。

公开(公告)号：US20080055719A1

公开(公告)日：2008-03-06

申请号：US11469210

申请日：2006-08-31

申请人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

发明人： Raymond T. Perkins ,  Bin Wang ,  Eric Gardner ,  Douglas P. Hansen

IPC分类号： G02B5/30 ,  G02B27/28

CPC分类号： G02B5/3058

摘要： An inorganic, dielectric grid polarizer device includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form birefringent layer with an array of parallel ribs having a period less than 400 nm.

摘要翻译： 无机介电栅极偏振器装置包括设置在基板上方的一层薄膜层。 每个膜层由无机和电介质的材料形成。 相邻的膜层各自具有不同的折射率。 至少一个膜层是不连续的以形成具有周期小于400nm的平行肋阵列的形式双折射层。