公开(公告)号：US06179948B2

公开(公告)日：2001-01-30

申请号：US09006455

申请日：1998-01-13

申请人： William W. Merrill ,  Richard C. Allen ,  Ronald J. Tabar ,  Peter D. Condo ,  Timothy J. Nevitt

发明人： William W. Merrill ,  Richard C. Allen ,  Ronald J. Tabar ,  Peter D. Condo ,  Timothy J. Nevitt

IPC分类号： B29C5300

CPC分类号： G02B5/3008 ,  B29C55/023 ,  B29C55/14 ,  B29K2995/0018 ,  B29L2009/00 ,  G02B5/3033 ,  Y10T156/1002 ,  Y10T428/24479 ,  Y10T428/24595 ,  Y10T428/24942

摘要： Optical films and processes for forming the optical films are described in which materials having different properties are used and the different properties are exploited to obtain improved optical and/or mechanical properties of the optical film. The different properties of the materials may be used to select processing conditions under which the materials will react differently. The film may be processed with respect to two different directions with the amount of molecular orientation, if any, induced by the process being separately controlled for each material and each direction.

公开(公告)号：US06329046B1

公开(公告)日：2001-12-11

申请号：US09419947

申请日：1999-10-18

申请人： William W. Merrill ,  Richard C. Allen ,  Ronald J. Tabar ,  Peter D. Condo ,  Timothy J. Nevitt

发明人： William W. Merrill ,  Richard C. Allen ,  Ronald J. Tabar ,  Peter D. Condo ,  Timothy J. Nevitt

IPC分类号： B32B702

CPC分类号： G02B5/3008 ,  B29C55/023 ,  B29C55/14 ,  B29K2995/0018 ,  B29L2009/00 ,  G02B5/3033 ,  Y10T156/1002 ,  Y10T428/24479 ,  Y10T428/24595 ,  Y10T428/24942

摘要： Optical films and processes for forming the optical films are described in which materials having different properties are used and the different properties are exploited to obtain improved optical and/or mechanical properties of the optical film. The different properties of the materials may be used to select processing conditions under which the materials will react differently. The film may be processed with respect to two different directions with the amount of molecular orientation, if any, induced by the process being separately controlled for each material and each direction.

摘要翻译： 描述了用于形成光学膜的光学膜和方法，其中使用具有不同性质的材料，并且利用不同的性质以获得光学膜的改善的光学和/或机械性能。 材料的不同性质可用于选择不同材料反应的加工条件。 该膜可以相对于两个不同的方向进行处理，其中分离方向的量（如果有的话）由每个材料和每个方向被单独控制。

公开(公告)号：US20120140324A1

公开(公告)日：2012-06-07

申请号：US13371025

申请日：2012-02-10

申请人： Michael F. Weber ,  Timothy J. Nevitt ,  Roger J. Strharsky

发明人： Michael F. Weber ,  Timothy J. Nevitt ,  Roger J. Strharsky

IPC分类号： G02B5/30

CPC分类号： G02B5/3041 ,  G02B5/3083 ,  G02B27/281 ,  G02F1/133536 ,  G02F2001/133545

摘要： A hybrid polarizer includes an absorbing element having a first major surface and a second major surface. The hybrid polarizer also includes a first birefringent reflective polarizer disposed on the first major surface of the absorbing element, the first birefringent reflective polarizer having a first pass axis and a first block axis. The hybrid polarizer further includes a second birefringent reflective polarizer disposed on the second major surface of the absorbing element, the second reflective polarizer having a second pass axis and a second block axis.

摘要翻译： 混合偏振器包括具有第一主表面和第二主表面的吸收元件。 混合偏振器还包括设置在吸收元件的第一主表面上的第一双折射反射偏振器，第一双折射反射偏振器具有第一通过轴和第一块轴。 混合偏振器还包括设置在吸收元件的第二主表面上的第二双折射反射偏振器，第二反射偏振器具有第二通过轴和第二块轴。

公开(公告)号：US08120730B2

公开(公告)日：2012-02-21

申请号：US12916838

申请日：2010-11-01

申请人： Michael F. Weber ,  Timothy J. Nevitt ,  Roger J. Strharsky

发明人： Michael F. Weber ,  Timothy J. Nevitt ,  Roger J. Strharsky

IPC分类号： G02F1/1335 ,  G02B5/30

CPC分类号： G02B5/3041 ,  G02B5/3083 ,  G02B27/281 ,  G02F1/133536 ,  G02F2001/133545

摘要： A hybrid polarizer includes an absorbing element having a first major surface and a second major surface. The hybrid polarizer also includes a first birefringent reflective polarizer disposed on the first major surface of the absorbing element, the first birefringent reflective polarizer having a first pass axis and a first block axis. The hybrid polarizer further includes a second birefringent reflective polarizer disposed on the second major surface of the absorbing element, the second reflective polarizer having a second pass axis and a second block axis.

摘要翻译： 混合偏振器包括具有第一主表面和第二主表面的吸收元件。 混合偏振器还包括设置在吸收元件的第一主表面上的第一双折射反射偏振器，第一双折射反射偏振器具有第一通过轴和第一块轴。 混合偏振器还包括设置在吸收元件的第二主表面上的第二双折射反射偏振器，第二反射偏振器具有第二通过轴和第二块轴。

公开(公告)号：US20120275023A1

公开(公告)日：2012-11-01

申请号：US13503336

申请日：2010-10-22

申请人： Michael F. Weber ,  Tao Liu ,  Timothy J. Nevitt

发明人： Michael F. Weber ,  Tao Liu ,  Timothy J. Nevitt

IPC分类号： G02B5/30

CPC分类号： G02B5/3041 ,  G02B5/305 ,  G02F1/13362

摘要： A film construction (330) includes a broad band reflective polarizing film (312) that may be immersed in an ultra low refractive index medium (332, 334). The reflecting polarizing film is characterized by a pass axis and a block axis, and its reflectivity for white light of the pass state polarization increases with increasing incidence angle to provide a compressed or narrowed viewing cone selectively in one plane of incidence. In some embodiments, the plane of incidence associated with the compressed viewing cone is aligned with the pass axis. In other embodiments it is aligned with the block axis.

摘要翻译： 膜结构（330）包括可以浸在超低折射率介质（332,334）中的宽带反射偏振膜（312）。 反射偏振膜的特征在于通过轴和块轴，并且其通过状态偏振的白光的反射率随着入射角的增加而增加，以在一个入射平面中选择性地提供压缩或变窄的观察锥。 在一些实施例中，与压缩观察锥相关联的入射平面与通过轴对准。 在其他实施例中，它与块轴对齐。

公开(公告)号：US20110043732A1

公开(公告)日：2011-02-24

申请号：US12916838

申请日：2010-11-01

申请人： Michael F. Weber ,  Timothy J. Nevitt ,  Roger J. Strharsky

发明人： Michael F. Weber ,  Timothy J. Nevitt ,  Roger J. Strharsky

IPC分类号： G02F1/1335 ,  G02B5/30

CPC分类号： G02B5/3041 ,  G02B5/3083 ,  G02B27/281 ,  G02F1/133536 ,  G02F2001/133545

摘要： A hybrid polarizer includes an absorbing element having a first major surface and a second major surface. The hybrid polarizer also includes a first birefringent reflective polarizer disposed on the first major surface of the absorbing element, the first birefringent reflective polarizer having a first pass axis and a first block axis. The hybrid polarizer further includes a second birefringent reflective polarizer disposed on the second major surface of the absorbing element, the second reflective polarizer having a second pass axis and a second block axis.

摘要翻译： 混合偏振器包括具有第一主表面和第二主表面的吸收元件。 混合偏振器还包括设置在吸收元件的第一主表面上的第一双折射反射偏振器，第一双折射反射偏振器具有第一通过轴和第一块轴。 混合偏振器还包括设置在吸收元件的第二主表面上的第二双折射反射偏振器，第二反射偏振器具有第二通过轴和第二块轴。

公开(公告)号：US20120212812A1

公开(公告)日：2012-08-23

申请号：US13504339

申请日：2010-11-10

申请人： Michael F. Weber ,  Yufeng Liu ,  Timothy J. Nevitt

发明人： Michael F. Weber ,  Yufeng Liu ,  Timothy J. Nevitt

IPC分类号： G03B21/60

CPC分类号： G03B21/604

摘要： A projection system is disclosed, in which a screen may have improved rejection of ambient light by having a high reflectivity at low angles of incidence for a polarization parallel to that of the projector, a low reflectivity at high angles of incidence for a polarization parallel to that of the projector, and a low reflectivity at both low and high angles of incidence for a polarization perpendicular to that of the projector. In some embodiments, for p-polarized light polarized parallel to the projector, the power reflectivity is high at low angles of incidence and decreases to a low value at high angles of incidence. In some embodiments, for p-polarized light polarized perpendicular to the projector, the power reflectivity is low at low angles of incidence. In some embodiments, for s-polarized light polarized perpendicular to the projector, the power reflectivity remains low at all angles of incidence. In some embodiments, the screen includes a thin film structure that has alternating quarter-wave layers of isotropic and birefringent materials, which are refractive-index-matched for light polarized perpendicular to the projector, which form a high reflector at normal incidence for light polarized parallel to the projector, and which exhibit Brewster's angle effects for p-polarized light polarized parallel to the projector at high angles of incidence. The Brewster's angle effect may be reached by use of a light-scattering layer that increases the effective incident refractive index.

摘要翻译： 公开了一种投影系统，其中屏幕可以通过在平行于投影仪的偏振的低入射角具有高反射率而具有改善的环境光的抑制，在与入射角平行的偏振的高入射角处的低反射率 投影仪的偏振角以及垂直于投影仪的偏振的低和高入射角的低反射率。 在一些实施例中，对于平行于投影仪偏振的p偏振光，在低入射角下的功率反射率高，并且在高入射角下降低到低值。 在一些实施例中，对于垂直于投影仪偏振的p偏振光，功率反射率在低入射角下较低。 在一些实施例中，对于垂直于投影仪偏振的s偏振光，功率反射率在所有入射角保持较低。 在一些实施例中，屏幕包括薄膜结构，其具有交替的各向同性和双折射材料的四分之一波长层，其对于垂直于投影仪偏振的光进行折射率匹配，其在垂直入射时形成用于光偏振的正反射器 平行于投影仪，并且以高入射角度平行于投影仪偏振的p偏振光表现出布鲁斯特的角度效应。 布鲁斯特的角度效应可以通过使用增加有效入射折射率的光散射层达到。

公开(公告)号：US20110222295A1

公开(公告)日：2011-09-15

申请号：US13129455

申请日：2009-11-16

申请人： Michael F. Weber ,  Timothy J. Nevitt ,  Gilles J. Benoit

发明人： Michael F. Weber ,  Timothy J. Nevitt ,  Gilles J. Benoit

IPC分类号： F21V7/22 ,  B32B7/02

CPC分类号： G02B5/305 ,  B32B3/08 ,  B32B7/02 ,  B32B27/08 ,  B32B27/302 ,  B32B27/32 ,  B32B2250/24 ,  B32B2307/412 ,  B32B2307/416 ,  B32B2307/418 ,  B32B2307/514 ,  B32B2307/518 ,  B32B2307/52 ,  B32B2307/5825 ,  B32B2307/584 ,  B32B2551/00 ,  G02B5/3083 ,  G02F1/133536 ,  G02F1/13362 ,  G02F2203/07 ,  Y10T428/24942

摘要： A film includes microlayers arranged into optical repeat units. Adjacent microlayers have in-plane refractive index mismatches Δnx, Δny tailored to provide mirror-like on-axis properties, such that the film has a reflectivity for normally incident light in an extended wavelength band of at least 75% for any polarization. Adjacent microlayers also have a refractive index mismatch Δnz that provides the film with reduced reflectivity R1 and increased transmission for p-polarized light in the extended wavelength band incident on the film in a first plane of incidence at an angle θblique, where R1 is no more than half of the minimum of on-axis reflectivity. Further, Δnx and Δny are different enough so that for light incident on the film in a second plane of incidence orthogonal to the first plane, the film has a reflectivity R2 of at least 75% for such light that is p-polarized and incident at any angle.

摘要翻译： 胶片包括布置成光学重复单元的微层。 相邻的微层具有平面内折射率不匹配和Dgr; nx和＆Dgr; ny，以提供镜面上的轴上属性，使得该膜对于任何的任何的至少75％的扩展波长带的正常入射光具有反射率 极化。 相邻的微层也具有折射率不匹配和Dgr; nz，其提供膜具有降低的反射率R1，并且以在角度θ处的第一入射平面入射在膜上的扩展波长带中的p偏振光的增加透射; R1不超过轴上反射率的最小值的一半。 此外，＆Dgr; nx和＆Dgr; ny足够不同，使得对于入射到与第一平面垂直的第二入射平面的膜上的光，该膜对于这样的光，对于p型，其反射率R2至少为75％ 以任何角度偏振和入射。

公开(公告)号：US09063293B2

公开(公告)日：2015-06-23

申请号：US13503336

申请日：2010-10-22

申请人： Michael F. Weber ,  Tao Liu ,  Timothy J. Nevitt

发明人： Michael F. Weber ,  Tao Liu ,  Timothy J. Nevitt

IPC分类号： G02B5/30 ,  G02F1/1335

CPC分类号： G02B5/3041 ,  G02B5/305 ,  G02F1/13362

摘要： A film construction (330) includes a broad band reflective polarizing film (312) that may be immersed in an ultra low refractive index medium (332, 334). The reflecting polarizing film is characterized by a pass axis and a block axis, and its reflectivity for white light of the pass state polarization increases with increasing incidence angle to provide a compressed or narrowed viewing cone selectively in one plane of incidence. In some embodiments, the plane of incidence associated with the compressed viewing cone is aligned with the pass axis. In other embodiments it is aligned with the block axis.

摘要翻译： 膜结构（330）包括可以浸在超低折射率介质（332,334）中的宽带反射偏振膜（312）。 反射偏振膜的特征在于通过轴和块轴，并且其通过状态偏振的白光的反射率随着入射角的增加而增加，以在一个入射平面中选择性地提供压缩或变窄的观察锥。 在一些实施例中，与压缩观察锥相关联的入射平面与通过轴对准。 在其他实施例中，它与块轴对齐。

公开(公告)号：US20110222263A1

公开(公告)日：2011-09-15

申请号：US13129468

申请日：2009-11-17

申请人： Michael F. Weber ,  Timothy J. Nevitt ,  Stephen A. Johnson ,  Yufeng Liu ,  David T. Yust

发明人： Michael F. Weber ,  Timothy J. Nevitt ,  Stephen A. Johnson ,  Yufeng Liu ,  David T. Yust

IPC分类号： F21V9/14 ,  G02B5/30

CPC分类号： G02B5/305 ,  B32B3/08 ,  B32B7/02 ,  B32B27/08 ,  B32B27/302 ,  B32B27/32 ,  B32B2250/24 ,  B32B2307/412 ,  B32B2307/416 ,  B32B2307/418 ,  B32B2307/514 ,  B32B2307/518 ,  B32B2307/52 ,  B32B2307/5825 ,  B32B2307/584 ,  B32B2551/00 ,  G02F2001/133507

摘要： A reflective film includes microlayers arranged into optical repeat units, each optical repeat unit including a negatively birefringent microlayer. The microlayers are tailored to provide the film with on-axis polarizing properties, such that normally incident light polarized along a block axis is substantially reflected and normally incident light polarized along a pass axis is substantially transmitted. On-axis transmission for the block axis may be 70%. The microlayers also provide the film with angularly dependent polarizing properties: p-polarized light incident in a block plane of incidence is substantially reflected at near-normal angles but substantially transmitted at an oblique angle. The film transmits unpolarized light incident in this plane more strongly at the oblique angle than at normal. The films can be used in direct-lit backlights, luminaires, and similar lighting systems for flux leveling to promote spatial brightness uniformity.

摘要翻译： 反射膜包括布置成光学重复单元的微层，每个光学重复单元包括负双折射微层。 微层被定制以提供具有轴上偏振特性的膜，使得沿着块轴偏振的正常入射光被基本反射，并且通常沿着通过轴偏振的入射光基本上被透射。 块轴的轴向传动可能<20％，而传动轴的轴上传动可能> 70％。 微层还为膜提供具有角度依赖的偏振性质：入射在块平面中的p偏振光基本上在近似的角度反射，但基本上以倾斜角传播。 该膜以比正常情况下更倾斜地倾斜入射在该平面中的非偏振光。 这些胶片可用于直射式背光源，灯具和类似的照射系统，用于助焊剂流平，以促进空间亮度均匀性。