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1. 发明授权

US08567957B2 Active polarization switch for speckle reduction in laser projection sources 有权
标题翻译：激光投影光源减少斑点的主动偏振开关
公开(公告)号：US08567957B2
公开(公告)日：2013-10-29
申请号：US13179828
申请日：2011-07-11
申请人： Markus Duelli , Mark O. Freeman , Christian Dean DeJong , Alban N. Lescure
发明人： Markus Duelli , Mark O. Freeman , Christian Dean DeJong , Alban N. Lescure
IPC分类号： G03B21/14 , G02F1/1335 , H04N3/02
CPC分类号： G02B27/286 , G02B27/48 , G03B21/2033 , G03B21/208 , H04N9/3129 , H04N9/3167
摘要： A laser-based imaging system (200) is configured to reduce perceived speckle in images (201). The imaging system (200) includes one or more laser sources (207), a light modulator (204) configured to produce the images (201) with light (205) from the laser sources (207), and one or more active polarization switches (206) disposed in an optical path of the imaging system (200). The active polarization switch (206) is configured to alternate a polarization orientation of the light in synchrony with an image refresh cycle of the system. The active polarization switch can be clocked in accordance with a clocking angle to optimize speckle reduction. Additionally, one or more light preconditioners (991,992) may be used to help optimize speckle reduction.
摘要翻译：基于激光的成像系统（200）被配置为减少图像中感知到的斑点（201）。成像系统（200）包括一个或多个激光源（207），配置成用来自激光源（207）的光（205）产生图像（201）的光调制器（204）和一个或多个有源极化开关（206）设置在成像系统（200）的光路中。主动偏振开关（206）被配置为与系统的图像刷新周期同步地交替光的偏振取向。主动偏振开关可以按照时钟角计时，以优化散斑减少。另外，一个或多个光预处理器（991,992）可用于帮助优化散斑减少。

2. 发明授权

US08152307B2 Diffractive optical element having periodically repeating phase mask and system for reducing perceived speckle 有权
$Diffractive optical element having periodically repeating phase mask and system for reducing perceived speckle$
标题翻译：具有周期性重复相位掩模的衍射光学元件和用于减少感觉到的斑点的系统
公开(公告)号：US08152307B2
公开(公告)日：2012-04-10
申请号：US12643914
申请日：2009-12-21
申请人： Markus Duelli , Alban N. Lescure , Mark O. Freeman , Christian Dean DeJong , Joshua M. Hudman
发明人： Markus Duelli , Alban N. Lescure , Mark O. Freeman , Christian Dean DeJong , Joshua M. Hudman
IPC分类号： G03B21/14 , G03H1/12 , H01S5/00 , H01S3/08 , H01S3/13
CPC分类号： G02B27/48 , G03B21/14 , G03B21/2053
摘要： A optical apparatus (201) for use in an laser imaging system (200) is provided. The optical apparatus (201) includes one or more optical elements (215) that are configured to create an intermediate image plane (217) in the laser imaging system (200). A diffractive optical element (216) is then disposed at the intermediate image plane (217) to reduce speckle. The diffractive optical element (216) includes a periodically repeating phase mask (218) that can be configured in accordance with steps, vortex functions, Hermite-Gaussian functions, and so forth. Smooth grey-level phase transitional surface (337) can be placed between elements (333,334) to improve brightness and image quality. The periodically repeating phase mask (218) makes manufacture simple by reducing alignment sensitivity, and can be used to make applicable safety standards easier to meet as well.
摘要翻译：提供一种用于激光成像系统（200）的光学装置（201）。光学装置（201）包括被配置为在激光成像系统（200）中产生中间像平面（217）的一个或多个光学元件（215）。然后将衍射光学元件（216）设置在中间像平面（217）处以减少斑点。衍射光学元件（216）包括可根据步骤配置的周期性重复相位掩模（218），涡旋函数，Hermite-高斯函数等。可以将平滑的灰度级相位过渡表面（337）放置在元件（333,334）之间，以提高亮度和图像质量。周期性重复相位掩模（218）通过降低对准灵敏度使制造变得简单，并且可以用于使适用的安全标准更容易满足。

3. 发明申请

US20130016321A1 Active Polarization Switch for Speckle Reduction in Laser Projection Sources 有权
标题翻译：激光投影源减少斑点的有源极化开关
公开(公告)号：US20130016321A1
公开(公告)日：2013-01-17
申请号：US13179828
申请日：2011-07-11
申请人： Markus Duelli , Mark O. Freeman , Christian Dean DeJong , Alban N. Lescure
发明人： Markus Duelli , Mark O. Freeman , Christian Dean DeJong , Alban N. Lescure
IPC分类号： G02B27/48 , G02F1/01 , G02B26/10 , G03B21/14
CPC分类号： G02B27/286 , G02B27/48 , G03B21/2033 , G03B21/208 , H04N9/3129 , H04N9/3167
摘要： A laser-based imaging system (200) is configured to reduce perceived speckle in images (201). The imaging system (200) includes one or more laser sources (207), a light modulator (204) configured to produce the images (201) with light (205) from the laser sources (207), and one or more active polarization switches (206) disposed in an optical path of the imaging system (200). The active polarization switch (206) is configured to alternate a polarization orientation of the light in synchrony with an image refresh cycle of the system. The active polarization switch can be clocked in accordance with a clocking angle to optimize speckle reduction. Additionally, one or more light preconditioners (991,992) may be used to help optimize speckle reduction.
摘要翻译：基于激光的成像系统（200）被配置为减少图像中感知到的斑点（201）。成像系统（200）包括一个或多个激光源（207），配置成用来自激光源（207）的光（205）产生图像（201）的光调制器（204）和一个或多个有源极化开关（206）设置在成像系统（200）的光路中。主动偏振开关（206）被配置为与系统的图像刷新周期同步地交替光的偏振取向。主动偏振开关可以按照时钟角计时，以优化散斑减少。另外，一个或多个光预处理器（991,992）可用于帮助优化散斑减少。

4. 发明申请

US20110149251A1 Diffractive Optical Element Having Periodically Repeating Phase Mask and System for Reducing Perceived Speckle 有权
$Diffractive Optical Element Having Periodically Repeating Phase Mask and System for Reducing Perceived Speckle$
标题翻译：具有周期性重复相位掩模和减少感知斑点的系统的衍射光学元件
公开(公告)号：US20110149251A1
公开(公告)日：2011-06-23
申请号：US12643914
申请日：2009-12-21
申请人： Markus Duelli , Alban N. Lescure , Mark O. Freeman , Christian Dean DeJong , Joshua M. Hudman
发明人： Markus Duelli , Alban N. Lescure , Mark O. Freeman , Christian Dean DeJong , Joshua M. Hudman
IPC分类号： G03B21/14 , G02B27/48
CPC分类号： G02B27/48 , G03B21/14 , G03B21/2053
摘要： A optical apparatus (201) for use in an laser imaging system (200) is provided. The optical apparatus (201) includes one or more optical elements (215) that are configured to create an intermediate image plane (217) in the laser imaging system (200). A diffractive optical element (216) is then disposed at the intermediate image plane (217) to reduce speckle. The diffractive optical element (216) includes a periodically repeating phase mask (218) that can be configured in accordance with steps, vortex functions, Hermite-Gaussian functions, and so forth. Smooth grey-level phase transitional surface (337) can be placed between elements (333,334) to improve brightness and image quality. The periodically repeating phase mask (218) makes manufacture simple by reducing alignment sensitivity, and can be used to make applicable safety standards easier to meet as well.
摘要翻译：提供一种用于激光成像系统（200）的光学装置（201）。光学装置（201）包括被配置为在激光成像系统（200）中产生中间像平面（217）的一个或多个光学元件（215）。然后将衍射光学元件（216）设置在中间像平面（217）处以减少斑点。衍射光学元件（216）包括可根据步骤配置的周期性重复相位掩模（218），涡旋函数，Hermite-高斯函数等。可以将平滑的灰度级相位过渡表面（337）放置在元件（333,334）之间，以提高亮度和图像质量。周期性重复相位掩模（218）通过降低对准灵敏度使制造变得简单，并且可以用于使适用的安全标准更容易满足。

5. 发明申请

US20120013855A1 Laser Scanning Imaging System with Reduced Speckle 有权
标题翻译：具有减少斑点的激光扫描成像系统
公开(公告)号：US20120013855A1
公开(公告)日：2012-01-19
申请号：US12835028
申请日：2010-07-13
申请人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
发明人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
IPC分类号： G02B27/48 , G02B26/10 , G03B21/28
CPC分类号： G02B27/48 , G02B26/101 , G03B21/2033 , H04N9/3129 , H04N9/3167
摘要： An imaging system (200) is configured to reduce perceived speckle (106) in images (201) by introducing angular diversity into consecutively projected images. The imaging system (200) includes one or more laser sources (203) that are configured to produce one or more light beams (215). A light modulator (204) scans these light beams (215) to produce images. A light translation element (206) introduces the angular diversity by physically altering a light reception location (208) on the light modulator (204) between refresh sweeps. To preserve image stability, image data (220) in a memory (218) can be correspondingly shifted.
摘要翻译：成像系统（200）被配置为通过将角度分集引入连续投影的图像来减少图像（201）中的感知散斑（106）。成像系统（200）包括被配置为产生一个或多个光束（215）的一个或多个激光源（203）。光调制器（204）扫描这些光束（215）以产生图像。光转换元件（206）通过在刷新扫描之间物理地改变光调制器（204）上的光接收位置（208）来引入角度分集。为了保持图像稳定性，存储器（218）中的图像数据（220）可以相应地移位。

6. 发明授权

US08395714B2 Scanned projection system using polymerized liquid crystal layer for speckle reduction 有权
标题翻译：扫描投影系统使用聚合液晶层进行散斑减光
公开(公告)号：US08395714B2
公开(公告)日：2013-03-12
申请号：US12554095
申请日：2009-09-04
申请人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
发明人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
IPC分类号： G02F1/1335 , G02F1/1333 , G02F1/13
CPC分类号： H04N9/3129 , G02B5/3083 , G02B27/48 , G02F1/1334 , G02F2001/291 , G03B21/2033 , G03B33/06
摘要： 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).
摘要翻译：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。

7. 发明申请

US20100265466A1 Laser Projection Source with Birefringent Wedge for Speckle Reduction 有权
标题翻译：激光投影源与双折射楔形减少斑点
公开(公告)号：US20100265466A1
公开(公告)日：2010-10-21
申请号：US12424951
申请日：2009-04-16
申请人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
发明人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
IPC分类号： G02B27/48 , G03B21/14
CPC分类号： G02B27/48 , G02B27/102 , G02B27/104 , G02B27/145 , H04N9/3129
摘要： 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).
摘要翻译：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）。

8. 发明申请

US20100265420A1 Scanned Projection System Using Polymerized Liquid Crystal Layer for Speckle Reduction 有权
标题翻译：使用聚合液晶层扫描投影系统减少斑点
公开(公告)号：US20100265420A1
公开(公告)日：2010-10-21
申请号：US12554095
申请日：2009-09-04
申请人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
发明人： Alban N. Lescure , Markus Duelli , Mark O. Freeman
IPC分类号： G02F1/1335 , G02F1/1337 , H01S3/10
CPC分类号： H04N9/3129 , G02B5/3083 , G02B27/48 , G02F1/1334 , G02F2001/291 , G03B21/2033 , G03B33/06
摘要： 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).
摘要翻译：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。

9. 发明授权

US08287128B2 Laser projection source with polarization diversity element for speckle reduction 有权
标题翻译：具有极化分集元件的激光投射源，用于散斑减光
公开(公告)号：US08287128B2
公开(公告)日：2012-10-16
申请号：US12573563
申请日：2009-10-05
申请人： Alban N. Lescure , Markus Duelli , Mark O. Freeman , Witold R. Teller
发明人： Alban N. Lescure , Markus Duelli , Mark O. Freeman , Witold R. Teller
IPC分类号： G03B21/14
CPC分类号： G02B27/48 , G02B27/1033 , G02B27/108 , G03B21/2073 , G03B21/208
摘要： 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). A polarization diversity element (221), which can be manufactured from a birefringent material or from a polymerized liquid crystal layer, is disposed within the imaging system (200). The polarization diversity element (221) is configured to alter the polarization of an incident beam to create a transmitted beam comprising diverse polarization patterns, thereby reducing speckle in projected images.
摘要翻译：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）。可以在成像系统（200）内设置可由双折射材料或聚合液晶层制造的偏振分集元件（221）。偏振分集元件（221）被配置为改变入射光束的偏振，以产生包括各种偏振图案的透射光束，从而减少投影图像中的斑点。

10. 发明申请

US20120013852A1 Alternating Beam Laser Imaging System with Reduced Speckle 审中-公开
标题翻译：交替光束激光成像系统减少斑点
公开(公告)号：US20120013852A1
公开(公告)日：2012-01-19
申请号：US12835037
申请日：2010-07-13
申请人： Mark Champion , Mark O. Freeman , Alban N. Lescure , Markus Duelli
发明人： Mark Champion , Mark O. Freeman , Alban N. Lescure , Markus Duelli
IPC分类号： G02B27/48 , G02B26/10 , G03B21/14
CPC分类号： G02B26/101 , G02B27/104 , G02B27/145 , G02B27/48 , H04N9/3129 , H04N9/3164
摘要： An imaging system (200) is configured to reduce perceived speckle in images (201) produced by the imaging system. The imaging system (200) includes one or more laser source pairs (205,206), with each laser source pair being configured to produce two beams (209,210) of a color. A spatial light modulator (211) is configured to produce the images (201) with light (212) from the source pairs by scanning the light (212) in a raster pattern (213) along a projection surface (202). A beam translator (225) is configured to cause lines of successive sweeps of the raster pattern (213) to be scanned with the two beams (221,222) on an alternating basis such that a line scanned by a first of the two beams in one sweep is scanned by a second of the two beams in a sequentially subsequent sweep. Other optical elements can introduce angular diversity to further reduce speckle, such as a beam shifter (2200) and a light translation element (990).
摘要翻译：成像系统（200）被配置为减少由成像系统产生的图像（201）中的感觉到的斑点。成像系统（200）包括一个或多个激光源对（205,206），每个激光源对被配置为产生颜色的两个光束（209,210）。空间光调制器（211）被配置为通过沿着投影表面（202）以光栅图案（213）扫描光（212）来从源对产生具有光（212）的图像（201）。光束转换器（225）被配置为使交替的基础上的两个光束（221,222）扫描光栅图案（213）的连续扫描线，使得由一个扫描中的两个光束中的第一个扫描的行在顺序的后续扫描中由两个光束中的第二个扫描。其他光学元件可以引入角度分集以进一步减少斑点，例如光束移动器（2200）和光转换元件（990）。

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