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10 条记录 (耗时 0.014 秒)

    System and method for characterizing optical devices
    2.
    发明授权
    System and method for characterizing optical devices 失效
    用于表征光学器件的系统和方法

    公开(公告)号：US06917750B2

    公开(公告)日：2005-07-12

    申请号：US10447518

    申请日：2003-05-29

    申请人： David B. Stegall ,  Dwayne L. LaBrake

    发明人： David B. Stegall ,  Dwayne L. LaBrake

    IPC分类号： G01M11/00 ,  G02B6/00

    CPC分类号： G01M11/336 ,  G01M11/335 ,  G01M11/337

    摘要： The invention relates to systems and methods for characterizing optical devices, and particularly to one that characterizes optical devices such as fiber Bragg gratings. In one embodiment, a system and method include the use of two light sources and four detectors to detect light transmitted through an optical device both before and after the light has been transmitted in each direction through the device.

    摘要翻译： 本发明涉及用于表征光学器件的系统和方法，特别涉及表征诸如光纤布拉格光栅的光学器件的系统和方法。 在一个实施例中，系统和方法包括使用两个光源和四个检测器来检测在光已经通过设备的每个方向上传输之前和之后透过光学设备的光。

    POWDER FOR ENHANCING FEATURE CONTRAST FOR INTRAORAL DIGITAL IMAGE SCANNING
    4.
    发明申请
    POWDER FOR ENHANCING FEATURE CONTRAST FOR INTRAORAL DIGITAL IMAGE SCANNING 审中-公开
    增强功能数字图像扫描功能的粉末

    公开(公告)号：US20130260340A1

    公开(公告)日：2013-10-03

    申请号：US13433643

    申请日：2012-03-29

    申请人： David B. Stegall ,  Zhisheng Yun

    发明人： David B. Stegall ,  Zhisheng Yun

    IPC分类号： A61B6/14

    CPC分类号： A61B6/145 ,  A61B6/481

    摘要： A method for intraoral image scanning using a powder with enhanced feature contrast. The method includes applying the powder to an intraoral structure and using an intraoral scanner in order to obtain electronic digital scan images of the intraoral structure. The powder includes a material providing enhanced feature contrast of the intraoral structure such as black particles combined with a white powder. The scan images can be used to create a 3D digital impression or model of the intraoral structure.

    摘要翻译： 一种使用增强特征对比度的粉末进行口内图像扫描的方法。 该方法包括将该粉末施用于口内结构并使用口内扫描器以获得口内结构的电子数字扫描图像。 粉末包括提供口腔内结构增强的特征对比度的材料，例如与白色粉末组合的黑色颗粒。 扫描图像可用于创建3D数字印象或口内结构的模型。

    Device and method for compensating for chromatic dispersion
    6.
    发明授权
    Device and method for compensating for chromatic dispersion 失效
    用于补偿色散的装置和方法

    公开(公告)号：US06711327B2

    公开(公告)日：2004-03-23

    申请号：US10027183

    申请日：2001-12-20

    申请人： Turan Erdogan ,  David B. Stegall

    发明人： Turan Erdogan ,  David B. Stegall

    IPC分类号： G02B634

    CPC分类号： G02B6/29317 ,  G02B6/02085 ,  G02B6/02095 ,  G02B6/02366 ,  G02B6/29319 ,  G02B6/29394 ,  H04B10/2519

    摘要： A device and method for compensating for chromatic dispersion in an optical signal. The optical signal is coupled between an optical waveguide of a type having (i) a fundamental-mode waveguide and (ii) a higher-order mode waveguide surrounding the fundamental-mode waveguide, wherein different effective indexes of refraction are associated with the fundamental-mode and higher-order mode waveguides. The device comprises a transmissive, long-period optical grating disposed along a length of the optical waveguide and has a receiving end and a transmitting end. The grating is chirped between the ends along a light conducting axis of the optical waveguide such that different wavelengths of the optical signal are coupled to the fundamental-mode and higher order mode waveguides at different points along the length of the grating so that chromatic dispersion is corrected at the transmitting end.

    摘要翻译： 一种用于补偿光信号中色散的装置和方法。 光信号耦合在具有（i）基本波导波导和（ii）围绕基波导波导的高阶模式波导的类型的光波导之间，其中不同的有效折射率与基波导波导相关联， 模式和高阶模式波导。 该器件包括沿着光波导的长度设置的透射式长周期光栅，并具有接收端和发射端。 光栅在端部之间沿着光波导的光导轴线被啁啾，使得光信号的不同波长耦合到沿着光栅长度的不同点处的基模和高阶模波导，使得色散为 在发送端修正。

    Fabrication of structures in an optical substrate
    9.
    发明授权
    Fabrication of structures in an optical substrate 有权
    光学基片中结构的制作

    公开(公告)号：US07085450B2

    公开(公告)日：2006-08-01

    申请号：US11020894

    申请日：2004-12-22

    申请人： Levent Biyikli ,  Jerome C. Porque ,  James M. Battiato ,  David B. Stegall

    发明人： Levent Biyikli ,  Jerome C. Porque ,  James M. Battiato ,  David B. Stegall

    IPC分类号： G02B6/34 ,  G03C5/00 ,  C03B37/022 ,  C03B37/023 ,  C03B37/018

    CPC分类号： G02B6/02138 ,  G02B6/02133 ,  G02B6/02152

    摘要： A system and method for fabricating structures in an optical substrate. An optical element produces first and second write beams that intersect at a first intersection location at the optical substrate. The first intersection location includes a fringe pattern produced by the first and second write beams. The optical element also produces first and second reference beams that intersect and are recombined at a second intersection location in substantially the same plane as the first intersection location. A controller then controls relative positioning between the optical substrate and the fringe pattern based on a signal derived from the recombined first and second reference beams.

    摘要翻译： 一种用于在光学衬底中制造结构的系统和方法。 光学元件产生在光学基板的第一交叉位置相交的第一和第二写入光束。 第一交叉位置包括由第一和第二写入光束产生的条纹图案。 光学元件还产生第一和第二参考光束，该第一和第二参考光束在与第一交叉位置基本相同的平面上的第二交叉位置处相交并重新组合。 控制器然后基于从重新组合的第一和第二参考光束导出的信号来控制光学衬底和条纹图案之间的相对定位。

    Amplitude mask for writing long-period gratings
    10.
    发明授权
    Amplitude mask for writing long-period gratings 失效
    用于写入长周期光栅的幅度掩模

    公开(公告)号：US06447959B1

    公开(公告)日：2002-09-10

    申请号：US09572520

    申请日：2000-05-17

    申请人： Turan Erdogan ,  Alan D. Heaney ,  David B. Stegall

    发明人： Turan Erdogan ,  Alan D. Heaney ,  David B. Stegall

    IPC分类号： G03F900

    CPC分类号： G02B6/02142 ,  G03F7/0005

    摘要： Long-period gratings are written more quickly and at higher intensities by amplitude masks having shadow-forming patterns that scatter, redirect, or otherwise divert shadow portions of radiation used for writing the gratings instead of blocking the shadow portions by absorption or reflection. The shadow-forming masks can be formed along transparent base optics by arrays of diffusers, diffractors, or refractors that relatively divert different portions of the radiation.

    摘要翻译： 长时间光栅通过具有阴影形成图案的幅度掩模更快地写入，并且以更高的强度写入，这些阴影形成图案散射，重定向或以其他方式转移用于写入光栅的辐射的阴影部分，而不是通过吸收或反射来阻挡阴影部分。 阴影形成掩模可以通过相对偏转辐射的不同部分的扩散器，衍射体或折射体的阵列沿透明基底光学器件形成。