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    Active tuning of a torsional resonant structure
    331.
    发明授权
    Active tuning of a torsional resonant structure 有权
    扭转谐振结构的主动调谐

    公开(公告)号：US06687034B2

    公开(公告)日：2004-02-03

    申请号：US10339953

    申请日：2003-01-10

    Applicant: David W. Wine ,  Mark P. Helsel ,  Clarence T. Tegreene

    Inventor： David W. Wine ,  Mark P. Helsel ,  Clarence T. Tegreene

    IPC: G02B2608

    CPC classification number: G02B26/0833 ,  G02B26/0841 ,  G02B26/085 ,  G02B26/0858 ,  G02B26/10 ,  G02B26/101 ,  G02B27/017 ,  G09G3/025 ,  G09G3/346 ,  G09G5/005 ,  G09G2300/0469 ,  Y10S359/904

    Abstract: A MEM s scanning device has a variable resonant frequency. In one embodiment, the MEMs device includes a flexible arm that extends from a oscillatory body. An electrical field applies a force to the flexible arm, thereby bending the flexible arm to shift the moment of inertia of the oscillatory body and a secondary mass carried by the flexible arm. The shifted moment of inertia changes the resonant frequency of the MEMs device. In another embodiment, an absorptive material forms a portion of a torsional arm that supports the oscillatory body. The mechanical properties of the absorptive material can be varied by varying the concentration of a gas surrounding the absorptive material. The varied mechanical properties change the resonant frequency of the scanning device. A display apparatus includes the scanning device and the scanning device scans about two or more axes, typically in a raster pattern. Various approaches to controlling the frequency responses of the scanning device are described, including active control of MEMs scanners and passive frequency tuning.

    Abstract translation: MEM扫描装置具有可变谐振频率。 在一个实施例中，MEM装置包括从振荡体延伸的柔性臂。 电场向柔性臂施加力，由此弯曲柔性臂以使振动体的惯性矩和由柔性臂承载的次级质量移动。 移动的惯性矩改变了MEMs器件的谐振频率。 在另一个实施例中，吸收材料形成支撑振荡体的扭转臂的一部分。 可以通过改变吸收材料周围的气体的浓度来改变吸收材料的机械性能。 不同的机械特性改变了扫描装置的谐振频率。 显示装置包括扫描装置和扫描装置扫描关于两个或多个轴，通常以光栅图案扫描。 描述了控制扫描装置的频率响应的各种方法，包括MEMs扫描器的主动控制和无源频率调谐。

    System and method for using multiple beams to respectively scan multiple regions of an image
    332.
    发明授权
    System and method for using multiple beams to respectively scan multiple regions of an image 失效

    公开(公告)号：US06639719B2

    公开(公告)日：2003-10-28

    申请号：US09858712

    申请日：2001-05-15

    Applicant: Clarence T. Tegreene ,  John R. Lewis ,  Hakan Urey

    Inventor： Clarence T. Tegreene ,  John R. Lewis ,  Hakan Urey

    IPC: G03B2156

    CPC classification number: G02B26/10

    Abstract: An image system includes a screen and a beam generator. The screen has first and second regions with adjustable brightness levels. The beam generator directs first and second electromagnetic off beams and first and second electromagnetic on beams onto the first and second regions, respectively. The first and second off beams respectively change the brightness levels of the first and second regions according to a first polarity, and the first and second on beams change the brightness levels of the first and second regions according to a second polarity. For example, the system may simultaneously scan multiple tiles of an image onto respective regions of the display screen with respective image (on) beams, and erase the regions with respective erase (off) beams. Scanning an image as multiple tiles often provides the image with a higher resolution for a given scan rate, and using on and off beams often increases the quality of the image.

    Frequency tunable resonant scanner and method of making
    333.
    发明授权
    Frequency tunable resonant scanner and method of making 有权
    频率可调共振扫描仪及其制作方法

    公开(公告)号：US06245590B1

    公开(公告)日：2001-06-12

    申请号：US09369674

    申请日：1999-08-05

    Applicant: David W. Wine ,  Mark P. Helsel ,  Jon D. Barger ,  Clarence T. Tegreene

    Inventor： David W. Wine ,  Mark P. Helsel ,  Jon D. Barger ,  Clarence T. Tegreene

    IPC: H01L2100

    CPC classification number: G09G3/025 ,  G02B26/0833 ,  G02B26/0841 ,  G02B26/101 ,  G02B27/017 ,  G06K7/10633 ,  G09G3/001

    Abstract: A MEM s scanning device has a variable resonant frequency. In one embodiment, the MEMs device includes a torsion arm that supports an oscillatory body. In one embodiment, an array of removable masses are placed on an exposed portion of the oscillatory body and selectively removed to establish the resonant frequency. The material can be removed by laser ablation, etching, or other processing approaches. In another approach, a migratory material is placed on the torsion arm and selectively stimulated to migrate into the torsion arm, thereby changing the mechanical properties of the torsion arm. The changed mechanical properties in turn changes the resonant frequency of the torsion arm. In another approach, symmetricaly distributed masses are removed or added in response to a measured resonant frequency to tune the resonant frequency to a desired resonant frequency. A display apparatus includes the scanning device and the scanning device scans about two or more axes, typically in a raster pattern. Various approaches to controlling the frequency responses of the scanning device are described, including active control of MEMs scanners and passive frequency tuning.

    Abstract translation: MEM扫描装置具有可变谐振频率。 在一个实施例中，MEM装置包括支撑摆动体的扭转臂。 在一个实施例中，将可移除质量的阵列放置在振荡体的暴露部分上并选择性地去除以建立谐振频率。 材料可以通过激光烧蚀，蚀刻或其他处理方法去除。 在另一种方法中，将迁移材料放置在扭转臂上并选择性地被刺激以迁移到扭转臂中，从而改变扭转臂的机械特性。 改变的机械性能又改变了扭转臂的共振频率。 在另一种方法中，响应于测量的谐振频率去除或添加对称分布质量，以将谐振频率调谐到期望的谐振频率。 显示装置包括扫描装置和扫描装置扫描关于两个或多个轴，通常以光栅图案扫描。 描述了控制扫描装置的频率响应的各种方法，包括MEMs扫描器的主动控制和无源频率调谐。

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