公开(公告)号：US07839575B2

公开(公告)日：2010-11-23

申请号：US12470022

申请日：2009-05-21

Applicant: Christian Dean DeJong ,  Karlton D. Powell ,  Mark O. Freeman ,  Joshua O. Miller

Inventor： Christian Dean DeJong ,  Karlton D. Powell ,  Mark O. Freeman ,  Joshua O. Miller

IPC: G02B27/14 ,  G02B27/10 ,  G02B9/00 ,  G02B6/26

CPC classification number: G02B27/0172 ,  G02B5/30 ,  G02B6/00 ,  G02B6/0023 ,  G02B6/0055 ,  G02B27/0081 ,  G02B2027/0125

Abstract: Substrate-guided relays that employ light guiding substrates to relay images from sources to viewers in optical display systems. The substrate-guided relays are comprised of an input coupler, an intermediate substrate, and an output coupler. In some embodiments, the output coupler is formed in a separate substrate that is coupled to the intermediate substrate. The output coupler may be placed in front of or behind the intermediate substrate, and may employ two or more partially reflective surfaces to couple light from the coupler. In some embodiments, the input coupler is coupled to the intermediate substrate in a manner that the optical axis of the input coupler intersects the optical axis of the intermediate substrate at a non-perpendicular angle.

Abstract translation: 采用光导基板的基板导向继电器将光源显示系统中的图像从源传输到观看者。 衬底导向继电器由输入耦合器，中间衬底和输出耦合器组成。 在一些实施例中，输出耦合器形成在耦合到中间衬底的单独衬底中。 输出耦合器可以放置在中间衬底的前面或后面，并且可以采用两个或更多个部分反射的表面来耦合来自耦合器的光。 在一些实施例中，输入耦合器以使得输入耦合器的光轴以非垂直角与中间基板的光轴相交的方式耦合到中间基板。

公开(公告)号：US20100265466A1

公开(公告)日：2010-10-21

申请号：US12424951

申请日：2009-04-16

Applicant: Alban N. Lescure ,  Markus Duelli ,  Mark O. Freeman

Inventor： Alban N. Lescure ,  Markus Duelli ,  Mark O. Freeman

IPC: G02B27/48 ,  G03B21/14

CPC classification number: G02B27/48 ,  G02B27/102 ,  G02B27/104 ,  G02B27/145 ,  H04N9/3129

Abstract: An imaging system (200), such as a scanned laser projection system, includes one or more laser sources (201) configured to produce one or more light beams (204), and a light modulator (203) configured to produce images (206) from the light beams (204). Optional optical alignment devices (220) can be used to orient the light beams (204) into a combined light beam (205). A birefringent wedge (221) is disposed between at least one of the laser sources (201) and the light modulator (203). The birefringent wedge (221) is configured to receive light from the laser sources (201) and deliver two angularly separated and orthogonally polarized light beams (223) to the light modulator (203) so as to reduce speckle appearing when the images (206) are displayed on a display surface (207). An optional glass wedge (1004) can be used to correct optical path deviation (1001) introduced by the birefringent wedge (221).

Abstract translation: 诸如扫描激光投影系统的成像系统（200）包括被配置为产生一个或多个光束（204）的一个或多个激光源（201）和被配置为产生图像（206）的光调制器（203） 从光束（204）。 可选的光学对准装置（220）可用于将光束（204）定向成组合的光束（205）。 双折射楔（221）设置在至少一个激光源（201）和光调制器（203）之间。 双折射楔（221）被配置为从激光源（201）接收光，并将两个角度分离和正交偏振光束（223）传送到光调制器（203），以便减少当图像（206） 被显示在显示表面（207）上。 可以使用可选的玻璃楔（1004）来校正由双折射楔（221）引入的光路偏差（1001）。

公开(公告)号：US20100265420A1

公开(公告)日：2010-10-21

申请号：US12554095

申请日：2009-09-04

Applicant: Alban N. Lescure ,  Markus Duelli ,  Mark O. Freeman

Inventor： Alban N. Lescure ,  Markus Duelli ,  Mark O. Freeman

IPC: G02F1/1335 ,  G02F1/1337 ,  H01S3/10

CPC classification number: H04N9/3129 ,  G02B5/3083 ,  G02B27/48 ,  G02F1/1334 ,  G02F2001/291 ,  G03B21/2033 ,  G03B33/06

Abstract: An imaging system (200), such as a scanned laser projection system, includes one or more laser sources (201) configured to produce one or more light beams (204), and a light modulator (203) configured to produce images (206) from the light beams (204). Optional optical alignment devices (220) can be used to orient the light beams (204) into a combined light beam (205). A beam separator (221), which can be any of a birefringent wedge, compensated birefringent wedge, or a polymerized liquid crystal layer, is disposed between at least one of the laser sources (201) and the light modulator (203). The beam separator (221) is configured to receive light from the laser sources (201) and deliver two angularly separated and orthogonally polarized light beams (223) to the light modulator (203) so as to reduce speckle appearing when the images (206) are displayed on a display surface (207).

Abstract translation: 诸如扫描激光投影系统的成像系统（200）包括被配置为产生一个或多个光束（204）的一个或多个激光源（201）和被配置为产生图像（206）的光调制器（203） 从光束（204）。 可选的光学对准装置（220）可用于将光束（204）定向成组合的光束（205）。 可以在至少一个激光源（201）和光调制器（203）之间设置可以是双折射楔形物，补偿双折射楔形物或聚合液晶层中的任何一种的分束器（221）。 光束分离器（221）被配置为从激光源（201）接收光，并将两个角度分离和正交偏振光束（223）传递到光调制器（203），以便减少当图像（206） 被显示在显示表面（207）上。

公开(公告)号：US07791807B2

公开(公告)日：2010-09-07

申请号：US12026899

申请日：2008-02-06

Applicant: Eugenia Pasca ,  Mark O. Freeman

Inventor： Eugenia Pasca ,  Mark O. Freeman

IPC: G02B27/14

CPC classification number: G02B27/0018 ,  G02B5/3083 ,  G02B27/0101 ,  G02B2027/0121

Abstract: Briefly, in accordance with one or more embodiments, a birefringent layer may be utilized in conjunction with a head-up display (HUD) for a vehicle or the like, for example where the birefringent layer is disposed in or on the windshield. The birefringent layer may impart a change in the polarization of light emerging from a projector of the head-up display in order to reduce or minimize interference between beams from the display and reflecting off of two or more surfaces that are combined at the viewer's eye, and/or to reduce or minimize the effect of polarizing sunglasses on the viewability of the image projected by the display. In one or more embodiments, the birefringent layer alters the polarization of the light reaching the viewer's eye if the user is wearing polarizing glasses or lenses so that less light from the display is blocked.

Abstract translation: 简而言之，根据一个或多个实施例，双折射层可以与用于车辆等的平视显示器（HUD）结合使用，例如双折射层设置在挡风玻璃中或挡风玻璃上。 双折射层可以赋予从平视显示器的投影仪出射的光的偏振的变化，以便减少或最小化来自显示器的光束之间的干涉并反射出在观察者眼睛处组合的两个或更多个表面， 和/或减少或最小化偏光太阳镜对由显示器投射的图像的可见度的影响。 在一个或多个实施例中，如果用户佩戴偏光眼镜或透镜，则双折射层改变到达观看者眼睛的光的偏振，使得来自显示器的较少光被阻挡。

公开(公告)号：US20100097534A1

公开(公告)日：2010-04-22

申请号：US12255639

申请日：2008-10-21

Applicant: Witold R. Teller ,  Alban N. Lescure ,  Mark O. Freeman

Inventor： Witold R. Teller ,  Alban N. Lescure ,  Mark O. Freeman

IPC: H04N5/74

CPC classification number: H04N9/3129

Abstract: An image producing system (1400) delivers images (1414) having reduced speckle by employing one or more drive circuits (1404, 1405, 1406) that deliver both a direct current drive signal (205) and an alternating current drive signal (405) to one or more lasers (1401, 1402, 1403). Specifically, an alternating current drive circuit (403) is used in conjunction with a direct current drive circuit (203) to modulate a drive signal. The modulation can be at a frequency of between 400 MHz and 600 MHz. When lasers, such as the red laser (1401) or the blue laser (1403) of a multi-laser system are modulated in such a fashion, their emitted spectral widths (407) greatly expand, thereby reducing speckle in projected images (1414).

Abstract translation: 图像产生系统（1400）通过采用一个或多个传送直流驱动信号（205）和交流驱动信号（405）的驱动电路（1404,1405,1406）来传送具有减少的斑点的图像（1414）， 一个或多个激光器（1401,1402,1403）。 具体地，交流驱动电路（403）与直流驱动电路（203）结合使用以调制驱动信号。 调制可以在400MHz和600MHz之间的频率上。 当以这种方式调制激光器（例如多激光系统的红色激光器（1401）或蓝色激光器（1403））时，其发射的光谱宽度（407）大大地扩大，从而减少投影图像中的斑点（1414） 。

公开(公告)号：US20090195875A1

公开(公告)日：2009-08-06

申请号：US12026899

申请日：2008-02-06

Applicant: Eugenia Pasca ,  Mark O. Freeman

Inventor： Eugenia Pasca ,  Mark O. Freeman

IPC: G02B27/28 ,  G02B27/01

CPC classification number: G02B27/0018 ,  G02B5/3083 ,  G02B27/0101 ,  G02B2027/0121

Abstract: Briefly, in accordance with one or more embodiments, a birefringent layer may be utilized in conjunction with a head-up display (HUD) for a vehicle or the like, for example where the birefringent layer is disposed in or on the windshield. The birefringent layer may impart a change in the polarization of light emerging from a projector of the head-up display in order to reduce or minimize interference between beams from the display and reflecting off of two or more surfaces that are combined at the viewer's eye, and/or to reduce or minimize the effect of polarizing sunglasses on the viewability of the image projected by the display. In one or more embodiments, the birefringent layer alters the polarization of the light reaching the viewer's eye if the user is wearing polarizing glasses or lenses so that less light from the display is blocked.

Abstract translation: 简而言之，根据一个或多个实施例，双折射层可以与用于车辆等的平视显示器（HUD）结合使用，例如双折射层设置在挡风玻璃中或挡风玻璃上。 双折射层可以赋予从平视显示器的投影仪出射的光的偏振的变化，以便减少或最小化来自显示器的光束之间的干涉并反射出在观察者眼睛处组合的两个或更多个表面， 和/或减少或最小化偏光太阳镜对由显示器投射的图像的可见度的影响。 在一个或多个实施例中，如果用户佩戴偏光眼镜或透镜，则双折射层改变到达观看者眼睛的光的偏振，使得来自显示器的较少光被阻挡。

公开(公告)号：US20090190098A1

公开(公告)日：2009-07-30

申请号：US12021988

申请日：2008-01-29

Applicant: Christian Dean DeJong ,  Mark O. Freeman

Inventor： Christian Dean DeJong ,  Mark O. Freeman

IPC: G02B27/28 ,  G03B21/28 ,  G03B21/14 ,  G02B5/30

CPC classification number: G02B5/30 ,  G02B5/3083 ,  G02B27/283 ,  G03B21/2073

Abstract: A scanned beam projection system includes a polarizing beam splitter, a polarization rotating component and a scanning mirror. Light is directed on a first light path to the polarizing beam splitter at a substantially constant angle of incidence. The P-polarized light passes through. The P-polarized light passes through the polarization rotating component, is reflected off the scanning mirror back through the polarization rotating component, and arrives at the polarizing beam splitter as S-polarized light with a non-constant angle of incidence. The S-polarized light is reflected by the polarizing beam splitter, and a scanned image results.

Abstract translation: 扫描光束投影系统包括偏振分束器，偏振旋转部件和扫描反射镜。 光以基本上恒定的入射角度指向偏振分束器的第一光路。 P偏振光通过。 P偏振光通过偏振旋转分量，通过偏振旋转分量从扫描镜反射回来，并以非恒定入射角作为S偏振光到达偏振分束器。 S偏振光被偏振分束器反射，并产生扫描图像。

公开(公告)号：US06351443B1

公开(公告)日：2002-02-26

申请号：US09434864

申请日：1999-11-04

Applicant: Mark O. Freeman

Inventor： Mark O. Freeman

IPC: G11B700

CPC classification number: G11B7/131 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/1372 ,  G11B7/22 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/02292 ,  H01S5/02296 ,  H01S5/4025

Abstract: The invention provides a pickup head used in an optical data storage system. The pickup head contains a diffractive optical element (DOE) stack on a semiconductor substrate. The DOE stack includes multiple diffractive lenses for providing several diffractive surfaces and a middle layer serving as a beamsplitter and servo-generating element for a light reflected from an optical storage medium. The middle layer is sandwiched by the diffractive lenses that are located on both outer parts of the DOE stack. The semiconductor substrate includes at least a laser source and several photodetectors. The middle layer's function preferably includes a polarization-selective DOE and a quarter-wave retarder oriented to rotate a polarization state of the laser source, so that only the light reflected from the optical storage medium is diffracted by the polarization-selective DOE.

Abstract translation: 本发明提供一种用于光学数据存储系统的拾取头。 拾取头在半导体衬底上包含衍射光学元件（DOE）堆叠。 DOE堆叠包括用于提供多个衍射面的多个衍射透镜和用作从光学存储介质反射的光的分束器和伺服产生元件的中间层。 中间层被位于DOE堆叠的两个外部部分上的衍射透镜夹持。 半导体衬底至少包括激光源和若干光电检测器。 中间层的功能优选地包括偏振选择性DOE和取向为旋转激光源的偏振状态的四分之一波长延迟器，使得仅光学存储介质反射的光被偏振选择性DOE衍射。

公开(公告)号：US5523993A

公开(公告)日：1996-06-04

申请号：US443246

申请日：1995-05-17

Applicant: Mark O. Freeman

Inventor： Mark O. Freeman

IPC: G11B7/09 ,  G11B7/135 ,  G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/0912

Abstract: A pickup head for use in optical disk systems such as compact disk players or CD-ROM computer memory includes a holographic optical element that has two decision regions that greatly simplify the design of the pickup head. The two decision regions diffract light that encounters the holographic optical element in two different directions, respectively. The amount of light power incident upon each decision region is utilized to determine a focus error signal and to interpret information stored on the compact or optical disk.

Abstract translation: 用于诸如光盘播放器或CD-ROM计算机存储器的光盘系统的拾取头包括具有大大简化拾取头的设计的两个判定区域的全息光学元件。 两个决定区域分别衍射在两个不同方向上遇到全息光学元件的光。 利用入射到每个决定区域的光功率量来确定聚焦误差信号并且解释存储在紧凑型或光盘上的信息。

公开(公告)号：US08576468B2

公开(公告)日：2013-11-05

申请号：US12887886

申请日：2010-09-22

Applicant: Mark O. Freeman ,  Joshua O. Miller

Inventor： Mark O. Freeman ,  Joshua O. Miller

IPC: G02B26/08

CPC classification number: G02B26/101 ,  G02B26/085 ,  G02B27/01 ,  G02B27/017

Abstract: A scanning projector includes a MEMS device with a scanning mirror that sweeps a beam in two dimensions. Actuating circuits receive scan angle information and provide signal stimulus to the MEMS device to control the amount of mirror deflection on two axes. The period of movement on one or both axes may be modified to effect changes in line density in a resultant display.

Abstract translation: 扫描投影仪包括具有扫描镜的MEMS装置，其在两个维度上扫描光束。 激励电路接收扫描角度信息并向MEMS器件提供信号激励以控制两个轴上的镜面偏转量。 可以修改一个或两个轴上的运动周期，以在所得到的显示中实现线密度的变化。