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    • 3. 发明授权
    • Speckle reduction in laser-projector images
    • 激光投影机图像中的斑点减少
    • US07502160B2
    • 2009-03-10
    • US11681376
    • 2007-03-02
    • Vladimir A. AksyukRandy C. GilesOmar D. LopezRoland Ryf
    • Vladimir A. AksyukRandy C. GilesOmar D. LopezRoland Ryf
    • G02B26/00G02B26/08
    • G02B26/0833G02B27/48
    • A laser projector having a configurable spatial light modulator (SLM) adapted to display various spatial modulation patterns and redirect illumination from a laser to form an image on the viewing screen. The laser projector drives the SLM to change spatial modulation patterns at a rate that causes the corresponding sequence of projected images to fuse to mitigate appearance of speckle in the resulting fused image. The SLM can be designed to redirect the illumination using either diffraction or specular reflection of light from the displayed spatial modulation pattern. In one embodiment, the SLM is a MEMS device having an array of individually addressable mirrors supported over a substrate and adapted to move (e.g., translate and/or rotate) with respect to the substrate.
    • 一种具有可配置空间光调制器(SLM)的激光投影仪,其适于显示各种空间调制图案,并且从激光器重定向照明以在观看屏幕上形成图像。 激光投影机驱动SLM以以使得相应的投影图像序列融合的速率来改变空间调制图案,以减轻所得融合图像中斑点的外观。 SLM可以被设计成使用来自显示的空间调制图案的光的衍射或镜面反射来重定向照明。 在一个实施例中,SLM是具有支撑在衬底上并适于相对于衬底移动(例如平移和/或旋转)的单独可寻址镜的阵列的MEMS器件。
    • 6. 发明授权
    • Micro-machined optical switch with tapered ends
    • 微型加工光学开关,锥形端
    • US6108466A
    • 2000-08-22
    • US154797
    • 1998-09-17
    • Vladimir A. AksyukDavid J. BishopC. Randy Giles
    • Vladimir A. AksyukDavid J. BishopC. Randy Giles
    • G02B26/08G02B6/122G02B6/26G02B6/35G02B6/38
    • G02B6/3514G02B6/122G02B6/262G02B6/3532G02B6/3546G02B6/357G02B6/3818
    • One-by-three and two-by-two optical switches comprising optical waveguides or fibers with tapered ends that utilize electrostatically-driven actuators are disclosed. Tapering of the fiber ends allow the ends to be positioned in close proximity to one another to yield an optical switch with low insertion loss. In one embodiment the optical switch comprises: (1) four optical waveguides each having a tapered end comprising two tapered edges and disposed on a support such that each tapered edge of each waveguide is in opposed and near-abutting relation with a tapered edge of another optical waveguide, said near abutment defining a space between each pair of opposes tapered edges; (2) a first electromechanical actuator operable to move at least a first optical device into and out of a path of an optical signal travelling between two of the waveguides, wherein the first optical device moves in the space between a first pair of opposed tapered edges; and (3) a second electromechanical actuator operable to move at least a second optical device into and out of the path of the optical signal, wherein the second optical device moves in the space between a second pair of opposed tapered edges, wherein one tapered edge of the first pair and one tapered edge of the second pair are common to one of the optical waveguides.
    • 公开了一种包括使用静电驱动致动器的光波导或具有锥形末端的光纤的一对三和两乘二光学开关。 纤维端部的锥形允许端部彼此靠近地定位,以产生具有低插入损耗的光学开关。 在一个实施例中,光开关包括:(1)四个光波导,每个光波导具有包括两个锥形边缘并且设置在支撑件上的锥形端,使得每个波导的每个锥形边缘与另一个波导的锥形边缘处于相对且近邻的关系 光波导,所述近邻台在每对相对的锥形边缘之间限定空间; (2)第一机电致动器,其可操作以将至少第一光学装置移入和移出在两个波导之间行进的光信号的路径,其中第一光学装置在第一对相对的锥形边缘 ; 和(3)第二机电致动器,其可操作以将至少第二光学装置移入和移出光信号的路径,其中第二光学装置在第二对相对的锥形边缘之间的空间内移动,其中一个锥形边缘 第一对的一个锥形边缘和第二对的一个锥形边缘对于一个光波导是共同的。
    • 8. 发明申请
    • SPECKLE REDUCTION IN LASER-PROJECTOR IMAGES
    • 激光投影仪图像中的光斑减少
    • US20080212034A1
    • 2008-09-04
    • US11681376
    • 2007-03-02
    • Vladimir A. AksyukRandy C. GilesOmar D. LopezRoland Ryf
    • Vladimir A. AksyukRandy C. GilesOmar D. LopezRoland Ryf
    • G03B21/28G03B21/14
    • G02B26/0833G02B27/48
    • A laser projector having a configurable spatial light modulator (SLM) adapted to display various spatial modulation patterns and redirect illumination from a laser to form an image on the viewing screen. The laser projector drives the SLM to change spatial modulation patterns at a rate that causes the corresponding sequence of projected images to fuse to mitigate appearance of speckle in the resulting fused image. The SLM can be designed to redirect the illumination using either diffraction or specular reflection of light from the displayed spatial modulation pattern. In one embodiment, the SLM is a MEMS device having an array of individually addressable mirrors supported over a substrate and adapted to move (e.g., translate and/or rotate) with respect to the substrate.
    • 一种具有可配置空间光调制器(SLM)的激光投影仪,其适于显示各种空间调制图案,并且从激光器重定向照明以在观看屏幕上形成图像。 激光投影机驱动SLM以以使得相应的投影图像序列融合的速率来改变空间调制图案,以减轻所得融合图像中斑点的外观。 SLM可以被设计成使用来自显示的空间调制图案的光的衍射或镜面反射来重定向照明。 在一个实施例中,SLM是具有支撑在衬底上并适于相对于衬底移动(例如平移和/或旋转)的单独可寻址镜的阵列的MEMS器件。
    • 10. 发明授权
    • Micro machined optical switch
    • 微加工光开关
    • US5923798A
    • 1999-07-13
    • US856569
    • 1997-05-15
    • Vladimir A. AksyukDavid J. BishopPeter L. Gammel
    • Vladimir A. AksyukDavid J. BishopPeter L. Gammel
    • G02B26/08G02B6/35G02B6/26
    • G02B6/357G02B6/3514G02B6/353G02B6/3548G02B6/3552G02B6/3594
    • Optical switches utilizing electrostatically-driven actuators formed from micro machined plates are disclosed. Under an applied voltage, a movable plate moves toward a fixed plate or a conductive region of an underlying support. The switches further include a mechanical linkage from the actuator to an optical device. The displacement of the movable plate generated at the actuator is transferred, via the mechanical linkage, to the optical device. The optical device, which is positioned in close proximity to optically-aligned spaced optical fibers, is movable into and out of an optical path defined by the optical cores of the optical fibers by the action of the actuator. An "in-plane" optical switch includes an actuator having two vertically-oriented electrodes, which generates a substantially horizontally-directed displacement of the movable plate and the linked optical device. An "out-of-plane" optical switch includes an actuator having at least one horizontally-disposed suspended above a conductive region of an underlying support. The actuator generates a substantially vertically-directed displacement of the movable plate and the linked optical device.
    • 公开了利用由微加工板形成的静电致动致动器的光开关。 在施加的电压下,可移动板朝向下方支撑件的固定板或导电区移动。 开关还包括从致动器到光学装置的机械连杆。 在致动器处产生的可动板的位移通过机械连杆传递到光学装置。 位于靠近光学对准间隔开的光纤的光学装置可通过致动器的动作进入和离开由光纤的光纤芯限定的光路。 “平面内”光开关包括具有两个垂直取向的电极的致动器,其产生可移动板和连接的光学装置的大致水平定向的位移。 “平面外”光开关包括具有至少一个水平放置的致动器,该至少一个悬挂在下面的支撑件的导电区域的上方。 致动器产生可移动板和连接的光学装置的基本垂直定向的位移。