公开(公告)号：US20140211322A1

公开(公告)日：2014-07-31

申请号：US13752359

申请日：2013-01-28

申请人： David D. Bohn ,  Ned Nestorovic ,  Steve J. Robbins

发明人： David D. Bohn ,  Ned Nestorovic ,  Steve J. Robbins

IPC分类号： G02B27/01

CPC分类号： G02B27/0172 ,  G02B17/0856 ,  G02B27/0081

摘要： Technology is described for a projection optical system which optically couples image light from an image source to a near-eye display (NED) of a wearable near-eye display device. The projection optical system and the image source make up a projection light engine. Light from the image source is directed to a birdbath reflective optical element which is immersed in high index glass. The image light is reflected and collimated by the birdbath element and travels outside a housing of the projection light engine forming an external exit pupil, meaning the exit pupil is external to the projection light engine. A waveguide optically couples the image light of the external exit pupil. An example of a waveguide which can be used is a surface relief grating waveguide.

摘要翻译： 对于将图像源的图像光光学耦合到可佩戴的近眼显示装置的近眼显示（NED）的投影光学系统，描述了技术。 投影光学系统和图像源组成投影光引擎。 来自图像源的光被引导到浸在高折射率玻璃中的浴浴反射光学元件。 图像光被鸟浴元件反射并准直，并且在形成外部出射光瞳的投影光引擎的壳体外面行进，意味着出射光瞳在投影光引擎的外部。 波导将外部出射光瞳的图像光学耦合。 可以使用的波导的示例是表面浮雕光栅波导。

公开(公告)号：US5576854A

公开(公告)日：1996-11-19

申请号：US152996

申请日：1993-11-12

申请人： Jack H. Schmidt ,  Ned Nestorovic ,  Rodney D. Sterling ,  Joseph M. Haggerty ,  Javier A. Ruiz ,  Robert Edwards ,  Roger Hollister

发明人： Jack H. Schmidt ,  Ned Nestorovic ,  Rodney D. Sterling ,  Joseph M. Haggerty ,  Javier A. Ruiz ,  Robert Edwards ,  Roger Hollister

IPC分类号： G02F1/13 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/135 ,  G03B21/00

CPC分类号： G02F1/133385 ,  G02F1/1333 ,  G02F1/133528 ,  G02F1/135 ,  G02F2001/133638

摘要： In a liquid crystal light valve projector, a quarter-wave compensator plate is disposed between a polarization plate and a liquid crystal light valve to compensate for polarization irregularities induced by the off-incident reflections in the cone of light projected onto the LCLV. The quarter-wave compensation plate reverses the phase of the P component of said illumination light with respect to said compensator plate by 180.degree. thereby eliminating P-polarization leakage during the dark state of an LCLV projector. The invention also combines the compensator plate with a heat shield and a low stress-optical coefficient counter electrode substrate to reduce the birefringence of the LCLV thereby also minimizing leakage of P-polarized light onto the projection screen during the dark state of the projector.

摘要翻译： 在液晶光阀投影机中，在偏振板和液晶光阀之间设置四分之一波长的补偿板，以补偿投射到LCLV上的光的入射反射引起的偏振不均匀。 四分之一波长补偿板将所述照明光的P分量相对于所述补偿板的相位反转180度，从而消除LCLV投影仪暗处的P极化泄漏。 本发明还将补偿板与隔热板和低应力光学系数对电极基板结合起来，以减少LCLV的双折射，从而也可以在投影机的黑暗状态期间最小化P偏振光到投影屏幕上的泄漏。

公开(公告)号：US09063331B2

公开(公告)日：2015-06-23

申请号：US13777562

申请日：2013-02-26

申请人： David D. Bohn ,  Ned Nestorovic

发明人： David D. Bohn ,  Ned Nestorovic

IPC分类号： G02F1/1335 ,  G02B27/01 ,  G02F1/13 ,  G02B27/28 ,  G02B5/30

CPC分类号： G02B27/0172 ,  G02B5/30 ,  G02B27/283 ,  G02B2027/0114 ,  G02B2027/015 ,  G02B2027/0178 ,  G02F1/1313

摘要： Embodiments are disclosed herein that relate to compact optical systems for incorporation into near-eye display devices. For example, one disclosed embodiment provides a near-eye display system may comprising a light source, a first polarizing beam splitting surface configured to receive light from the light source, a mirror configured to reflect light passed by the first polarizing beam splitting surface, and a quarter wave plate positioned between the first polarizing beam splitting surface and the mirror. The near-eye display system may further include a second polarizing beam splitting surface positioned at an angle relative to the first polarizing beam splitting surface and a microdisplay configured to produce an image via light received from the second polarizing beam splitting surface.

摘要翻译： 本文公开了涉及用于并入近眼显示装置的紧凑型光学系统的实施例。 例如，一个公开的实施例提供了一种近眼显示系统，其可以包括光源，被配置为接收来自光源的光的第一偏振光束分离表面，被配置为反射由第一偏振光束分离表面通过的光的反射镜，以及 位于第一偏振光束分离表面和反射镜之间的四分之一波片。 近眼显示系统还可以包括相对于第一偏振光束分离表面成一角度定位的第二偏振光束分离表面和配置成通过从第二偏振光束分离表面接收的光产生图像的微显示器。

公开(公告)号：US20150002528A1

公开(公告)日：2015-01-01

申请号：US13931241

申请日：2013-06-28

申请人： David D. Bohn ,  Ned Nestorovic ,  Rod G. Fleck ,  Cynthia Bell

发明人： David D. Bohn ,  Ned Nestorovic ,  Rod G. Fleck ,  Cynthia Bell

IPC分类号： G02B27/01

CPC分类号： G02B27/0172 ,  G02B5/18 ,  G02B6/0076 ,  G02B2027/0112 ,  G02B2027/0178

摘要： Technology is disclosed for optimizing a near-eye display using a waveguide. A first waveband for a first color narrower than the full spectral bandwidth for the first color and a second waveband for a second color adjacent to the first color in the visible spectrum are generated in image light of an image generation unit like a microdisplay. The first waveband and the second waveband are coupled into a same layer of a diffractive waveguide. An input grating of the same layer of the waveguide has a grating wavelength band approximately matching a waveband extensive with the first waveband and the second waveband. A converted green light emitting diode (LED) may be used for obtaining a first waveband centered around 515 nm in some examples. One of more of the wavebands may be obtained using filters, for example filters using dichroic mirrors, quantum dots or a combination of these.

摘要翻译： 公开了用于使用波导优化近眼显示的技术。 在诸如微显示器的图像生成单元的图像光中，生成比第一颜色的全光谱带宽窄的第一颜色的第一波段和与可见光谱中的第一颜色相邻的第二颜色的第二波段。 第一波段和第二波段被耦合到相同的衍射波导层中。 波导的相同层的输入光栅具有与第一波段和第二波段广泛匹配的波段的光栅波长带。 在一些示例中，转换的绿色发光二极管（LED）可用于获得以515nm为中心的第一波段。 可以使用滤波器获得更多的波段中的一个，例如使用二向色镜的滤波器，量子点或它们的组合。

公开(公告)号：US08873149B2

公开(公告)日：2014-10-28

申请号：US13752359

申请日：2013-01-28

申请人： David D. Bohn ,  Ned Nestorovic ,  Steve J. Robbins

发明人： David D. Bohn ,  Ned Nestorovic ,  Steve J. Robbins

IPC分类号： G02B27/14 ,  G02B3/00

CPC分类号： G02B27/0172 ,  G02B17/0856 ,  G02B27/0081

摘要： Technology is described for a projection optical system which optically couples image light from an image source to a near-eye display (NED) of a wearable near-eye display device. The projection optical system and the image source make up a projection light engine. Light from the image source is directed to a birdbath reflective optical element which is immersed in high index glass. The image light is reflected and collimated by the birdbath element and travels outside a housing of the projection light engine forming an external exit pupil, meaning the exit pupil is external to the projection light engine. A waveguide optically couples the image light of the external exit pupil. An example of a waveguide which can be used is a surface relief grating waveguide.

摘要翻译： 对于将图像源的图像光光学耦合到可佩戴的近眼显示装置的近眼显示（NED）的投影光学系统，描述了技术。 投影光学系统和图像源组成投影光引擎。 来自图像源的光被引导到浸在高折射率玻璃中的浴浴反射光学元件。 图像光被鸟浴元件反射并准直，并且在形成外部出射光瞳的投影光引擎的壳体外面行进，意味着出射光瞳在投影光引擎的外部。 波导将外部出射光瞳的图像光学耦合。 可以使用的波导的示例是表面浮雕光栅波导。

公开(公告)号：US20140240613A1

公开(公告)日：2014-08-28

申请号：US13777562

申请日：2013-02-26

申请人： David D. Bohn ,  Ned Nestorovic

发明人： David D. Bohn ,  Ned Nestorovic

IPC分类号： G02B27/01 ,  G02F1/13

CPC分类号： G02B27/0172 ,  G02B5/30 ,  G02B27/283 ,  G02B2027/0114 ,  G02B2027/015 ,  G02B2027/0178 ,  G02F1/1313

摘要： Embodiments are disclosed herein that relate to compact optical systems for incorporation into near-eye display devices. For example, one disclosed embodiment provides a near-eye display system may comprising a light source, a first polarizing beam splitting surface configured to receive light from the light source, a minor configured to reflect light passed by the first polarizing beam splitting surface, and a quarter wave plate positioned between the first polarizing beam splitting surface and the mirror. The near-eye display system may further include a second polarizing beam splitting surface positioned at an angle relative to the first polarizing beam splitting surface and a microdisplay configured to produce an image via light received from the second polarizing beam splitting surface.

摘要翻译： 本文公开了涉及用于并入近眼显示装置的紧凑型光学系统的实施例。 例如，一个公开的实施例提供了一种近眼显示系统，其可以包括光源，被配置为接收来自光源的光的第一偏振光束分离表面，被配置为反射由第一偏振光束分离表面通过的光的次级，以及 位于第一偏振光束分离表面和反射镜之间的四分之一波片。 近眼显示系统还可以包括相对于第一偏振光束分离表面成一角度定位的第二偏振光束分离表面和配置成通过从第二偏振光束分离表面接收的光产生图像的微显示器。