Optical light switch having two internally located diffraction gratings separated by liquid medium
    1.
    发明授权
    Optical light switch having two internally located diffraction gratings separated by liquid medium 有权
    具有由液体介质分离的两个内部定位的衍射光栅的光学开关

    公开(公告)号:US08976450B2

    公开(公告)日:2015-03-10

    申请号:US13079339

    申请日:2011-04-04

    IPC分类号: G02B5/18 G02B26/02 G02B26/08

    CPC分类号: G02B26/02 G02B26/0808

    摘要: A light switch (or valve) made up of two mutually inverted, substantially identical diffraction gratings with a liquid medium therebetween, arranged to allow the grating substrates to be shifted laterally relative to one another so as to align and mis-align the grating elements. When aligned, incident-polarized light passes through the switch and when misaligned, light does not pass through the switch but is reflected.

    摘要翻译: 由两个相互反转的,基本相同的衍射光栅组成的光开关(或阀),其间具有液体介质,布置成允许光栅基板相对于彼此横向移位,以便对准和错误对准光栅元件。 当对准时,入射偏振光通过开关,并且当未对准时,光不通过开关而被反射。

    Acousto-optic scanner
    2.
    发明授权
    Acousto-optic scanner 失效
    声光扫描仪

    公开(公告)号:US08400706B2

    公开(公告)日:2013-03-19

    申请号:US13079441

    申请日:2011-04-04

    IPC分类号: G02F1/33

    摘要: An acousto-optic laser beam scanner of improved scanning angle scope is provided by introducing a controllable compound acoustic waveform into a light transmissive body wherein at least binary and binary diffraction grating patterns of both positive and negative sense can be introduced into the body, the period of the waveform determining the refraction angle magnitude and the order of the pulses determining the refraction angle direction.

    摘要翻译: 通过将可控的复合声波形引入到透光体中来提供改进的扫描角范围的声光激光束扫描器,其中至少可以将正,负两个方向的二进制和二进制衍射光栅图案引入体内, 确定折射角大小的波形和确定折射角方向的脉冲的顺序。

    Grating structure for directing non-polarized light
    3.
    发明授权
    Grating structure for directing non-polarized light 有权
    用于引导非偏振光的光栅结构

    公开(公告)号:US08098430B2

    公开(公告)日:2012-01-17

    申请号:US12434202

    申请日:2009-05-01

    IPC分类号: G02B5/18 G02B5/30 G02B27/28

    摘要: A grating structure having a fused silica base includes alternating ridges and grooves. The ridges and grooves form a fused silica to air interface. The ridges and grooves are configured such that the grating has a ratio between the effective refractive index difference between s-polarization and p-polarization of about 1/3. As such, for non-polarized light with an incident angle θin of between 40° and 90° and a wavelength λ=350-1600 nm, the grating directs both s-polarization and p-polarization components of the incident light to the −1st order diffraction mode.

    摘要翻译: 具有熔融石英基底的光栅结构包括交替的脊和凹槽。 脊和槽形成熔融二氧化硅至空气界面。 脊和凹槽被构造成使得光栅具有约1/3的s偏振和p偏振之间的有效折射率差之间的比率。 因此,对于具有入射角和角度的非偏振光,在40°至90°之间且波长λ= 350-1600nm处,光栅将入射光的s偏振和p偏振分量都引导到 -1阶衍射模式。

    Optical device using laterally-shiftable diffraction gratings
    4.
    发明授权
    Optical device using laterally-shiftable diffraction gratings 有权
    使用横向移位的衍射光栅的光学装置

    公开(公告)号:US08072684B2

    公开(公告)日:2011-12-06

    申请号:US12692688

    申请日:2010-01-25

    IPC分类号: G02B5/18

    CPC分类号: G02B5/1866 G02B6/351

    摘要: A double-sided grating divider acts as a light switch where the upper and lower grating dividers are arranged to accommodate a relative lateral shift therebetween of about one-fourth of the period of the diffraction grating elements and where the critical refraction angles of the grating dividers are more than about 43.6°. Lateral shift may be achieved by various devices including MEMS and metal couplers having a known/calibrated thermal coefficient of expansion over a temperature range of interest.

    摘要翻译: 双面光栅分离器用作光开关,其中上和下光栅分隔器被布置成在衍射光栅元件的周期的大约四分之一处适应其间的相对横向偏移,并且其中光栅分隔器的临界折射角 超过约43.6°。 侧向偏移可以通过各种装置来实现,包括具有在感兴趣的温度范围内的已知/校准的热膨胀系数的MEMS和金属耦合器。

    Optical device using double-groove grating
    6.
    发明授权
    Optical device using double-groove grating 有权
    光学装置采用双槽光栅

    公开(公告)号:US08467643B2

    公开(公告)日:2013-06-18

    申请号:US12855844

    申请日:2010-08-13

    IPC分类号: G02B5/18 G02B6/34

    摘要: Optical devices using double-groove diffraction gratings having periodic sets of TiO2 elements on one or more surfaces of an SiO2 substrate are disclosed. First order components of incident polarized light coupled into the substrate are reflected so as to propagate through the substrate to terminus points where they either change direction for further propagation or exit the substrate. A windshield display system using the principles of the invention is disclosed.

    摘要翻译: 公开了在SiO 2衬底的一个或多个表面上使用具有周期性的TiO 2元素组的双槽衍射光栅的光学器件。 耦合到衬底中的入射偏振光的一阶分量被反射,以便通过衬底传播到终点,在那里它们改变方向以进一步传播或离开衬底。 公开了使用本发明原理的挡风玻璃显示系统。

    Optical device using laterally-shiftable diffraction gratings
    8.
    发明授权
    Optical device using laterally-shiftable diffraction gratings 有权
    使用横向移位的衍射光栅的光学装置

    公开(公告)号:US09285519B2

    公开(公告)日:2016-03-15

    申请号:US13309834

    申请日:2011-12-02

    IPC分类号: G02B5/18 G02B6/35

    CPC分类号: G02B5/1866 G02B6/351

    摘要: A double-sided grating divider acts as a light switch where the upper and lower grating dividers are arranged to accommodate a relative lateral shift therebetween of about one-fourth of the period of the diffraction grating elements and where the critical refraction angles of the grating dividers are more than about 43.6°. Lateral shift may be achieved by various devices including MEMS and metal couplers having a known/calibrated thermal coefficient of expansion over a temperature range of interest.

    摘要翻译: 双面光栅分离器用作光开关,其中上和下光栅分隔器被布置成在衍射光栅元件的周期的大约四分之一处适应其间的相对横向偏移,并且其中光栅分隔器的临界折射角 超过约43.6°。 侧向偏移可以通过各种装置来实现,包括具有在感兴趣的温度范围内的已知/校准的热膨胀系数的MEMS和金属耦合器。

    Reflection-minimized photonic crystal and device utilizing same
    9.
    发明授权
    Reflection-minimized photonic crystal and device utilizing same 有权
    反射最小化的光子晶体和利用它的器件

    公开(公告)号:US08369000B2

    公开(公告)日:2013-02-05

    申请号:US12708860

    申请日:2010-02-19

    IPC分类号: G02F1/29

    摘要: A photonic crystal structure that is composed of a host media having periodic dielectric holes disposed in the media at a period of ah. Each dielectric hole has a radius rh. The host media has an absolute refractive index expressed as |nh| that is less than 0.2. The photonic crystal structure has at least one reflection minimization layer disposed at an air/photonic crystal interface. The reflection minimization layer has periodic dielectric holes disposed therein at a period am with each dielectric hole having a radius rm such that ah=am and rm>rn and a beam steerable device including the photonic crystal structure. The device having a scanning rate of larger than 1 KHz and a scanning angle up to ±25 degrees.

    摘要翻译: 一种光子晶体结构,其由具有在介质中以周期设置的周期性电介质孔的主介质构成。 每个电介质孔的半径为rh。 主机介质的绝对折射率表示为| nh | 小于0.2。 光子晶体结构具有设置在空气/光子晶体界面处的至少一个反射最小化层。 反射最小化层在周期性地设置有周期性电介质孔,其中每个电介质孔具有半径rm,使得其为ah = am和rm,以及包括光子晶体结构的光束可控装置。 该装置具有大于1KHz的扫描速率和高达±25度的扫描角度。

    Grating structure for splitting light
    10.
    发明授权
    Grating structure for splitting light 有权
    用于分光的光栅结构

    公开(公告)号:US08264773B2

    公开(公告)日:2012-09-11

    申请号:US12434269

    申请日:2009-05-01

    IPC分类号: G02B5/18

    摘要: A grating structure for splitting light. The grating structure including alternating ridges and grooves. The ridges and grooves are configured such that the grating directs p-polarization components of incident light to the −1st order diffraction mode and s-polarization components of incident light to the 0th order diffraction mode.

    摘要翻译: 用于分光的光栅结构。 光栅结构包括交替的脊和凹槽。 脊和凹槽被构造成使得光栅将入射光的p偏振分量引导到第0级衍射模式和入射光的s偏振分量至0级衍射模式。