Temperature compensated optical device
    3.
    发明授权
    Temperature compensated optical device 有权
    温度补偿光学器件

    公开(公告)号:US06621957B1

    公开(公告)日:2003-09-16

    申请号:US09699940

    申请日:2000-10-30

    IPC分类号: G02B634

    摘要: A temperature compensated optical device includes a compression-tuned glass element 10 having a Bragg grating 12 therein, a compensating material spacer 26 and an end cap 28 all held within an outer shell 30. The element 10, end cap 28 and shell 30 are made of a material having a low coefficient of thermal expansion (CTE), e.g., silica, quartz, etc. and the spacer 26 is made of a material having a higher CTE, e.g., metal, Pyrex®, ceramic, etc. The material and length L5 of the spacer 26 is selected to offset the upward grating wavelength shift due to temperature. As temperature rises, the spacer 26 expands faster than the silica structure causing a compressive strain to be exerted on the element 10, which shifts the wavelength of the grating 12 down to balance the intrinsic temperature induces wavelength shift up. As a result, the grating 12 wavelength is substantially unchanged over a wide temperature range. The element 10 includes either an optical fiber having at least one Bragg grating 12 impressed therein encased within and fused to at least a portion of a glass capillary tube or a large diameter waveguide (or cane) with a grating 12 having a core 11 and a wide cladding, which does not buckle over a large range of compressive axial strains. The element may have a “dogbone” shape to amplify compressive strain on the grating 12. The device 8 may also be placed in an axially tunable system that allows the wavelength to be dynamically tuned while remaining athermal. In addition to a grating, the device may be an athermal laser, DFB laser, etc. Also, the entire device 8 may be all made of monolithic glass materials.

    摘要翻译: 温度补偿光学器件包括其中具有布拉格光栅12的压缩调谐玻璃元件10,补偿材料间隔件26和端盖28,所述补偿材料间隔件26和端盖28都保持在外壳30内。元件10,端帽28和壳体30被制成 具有低热膨胀系数(CTE)的材料,例如二氧化硅,石英等,并且间隔物26由具有较高CTE(例如金属,Pyrex,陶瓷等)的材料制成。 选择间隔件26的材料和长度L5以抵消由于温度引起的向上光栅波长偏移。 随着温度升高,间隔件26比二氧化硅结构膨胀得更快,导致施加在元件10上的压缩应变,其将光栅12的波长向下移动以平衡本征温度,从而引起波长向上移动。 结果,光栅12的波长在宽温度范围内基本上不变。 元件10包括具有至少一个布拉格光栅12的光纤,该光纤封装在玻璃毛细管或大直径波导(或甘蔗)的至少一部分内并与其融合,其中光栅12具有芯11和 宽的包层,其在大范围的压缩轴向应变下不扣合。 元件可以具有“狗骨”形状以放大光栅12上的压缩应变。器件8也可以放置在轴向可调谐系统中,其允许波长被动态调谐而保持不耐热。 除了光栅之外,该器件可以是无热激光器,DFB激光器等。此外,整个器件8可以全部由单片玻璃材料制成。

    METHOD OF READING ENCODED PARTICLES
    6.
    发明申请
    METHOD OF READING ENCODED PARTICLES 有权
    读取编码颗粒的方法

    公开(公告)号:US20110033948A9

    公开(公告)日:2011-02-10

    申请号:US11544309

    申请日:2006-10-06

    IPC分类号: G01N21/00

    摘要: Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected when illuminated by incident light 24. The incident light 24 may be directed transversely from the side of the substrate 10 with a narrow band (single wavelength) or multiple wavelength source, in which case the code is represented by a spatial distribution of light or a wavelength spectrum, respectively. The code may be digital binary or may be other numerical bases. The micro-particles 8 can provide a large number of unique codes, e.g., greater than 67 million codes, and can withstand harsh environments. The micro-particles 8 are functionalized by coating them with a material/substance of interest, which are then used to perform multiplexed experiments involving chemical processes, e.g., DNA testing and combinatorial chemistry.

    摘要翻译: 微粒8包括其中设置有至少一个衍射光栅12的光学基板10。 光栅12具有多个共同定位的间距Λ,其表示当被入射光24照射时检测到的唯一识别数字码。入射光24可以从基底10的侧面以窄带(单波长)横向地引导, 或多个波长源,在这种情况下,代码分别由光或波长光谱的空间分布表示。 代码可以是数字二进制的,也可以是其他的数字基础。 微粒子8可以提供大量唯一的代码,例如大于6700万个代码,并且可以承受恶劣的环境。 通过用感兴趣的材料/物质涂覆微粒8来进行官能化,然后将其用于进行涉及化学过程(例如DNA测试和组合化学)的复合实验。

    Method and apparatus for drug product tracking using encoded optical identification elements
    8.
    发明授权
    Method and apparatus for drug product tracking using encoded optical identification elements 有权
    使用编码的光学识别元件的药物产品跟踪的方法和装置

    公开(公告)号:US07619819B2

    公开(公告)日:2009-11-17

    申请号:US11187262

    申请日:2005-07-21

    IPC分类号: G02B5/18

    摘要: A method and apparatus for drug product tracking (or other pharmaceutical, health care or cosmetics products, and/or the packages or containers they are supplied with) using diffraction grating-based encoded optical identification elements includes an optical substrate having at least one diffraction grating disposed therein. The encoded element may be used to label any desired item, such as drugs or medicines, or other pharmaceutical or health care products or cosmetics. The label may be used for many different purposes, such as for sorting, tracking, identification, verification, authentication, anti-theft/anti-counterfeit, security/anti-terrorism, or for other purposes.

    摘要翻译: 使用基于衍射光栅的编码的光学识别元件的药物产品跟踪的方法和装置(或其他药物,保健或化妆品产品和/或其提供的包装或容器)包括具有至少一个衍射光栅 在其中。 所编码的元件可用于标记任何所需物品,例如药物或药物,或其他药物或保健产品或化妆品。 该标签可用于许多不同的目的,例如用于分类,跟踪,识别,验证,认证,防盗/防伪,安全/反恐,或用于其他目的。

    Lithographically fabricated holographic optical identification element
    9.
    发明授权
    Lithographically fabricated holographic optical identification element 有权
    光刻制作的全息光学识别元件

    公开(公告)号:US07508608B2

    公开(公告)日:2009-03-24

    申请号:US11283518

    申请日:2005-11-17

    IPC分类号: G03H1/00 H01L21/00

    摘要: A method for fabricating an optical identification element is provided, wherein a removable plate or substrate having photosensitive material fabricated thereon, one or more gratings are written on the photosensitive material, then lines are etched to create one or more separate optical identification elements. The one or more gratings may be written by exposing the photosensitive material to ultraviolet (UV) light. The lines may be etched to create the one or more separate optical identification elements by photolithography to define/create the same.

    摘要翻译: 提供了一种用于制造光学识别元件的方法,其中在其上制造感光材料的可移除板或衬底,一个或多个光栅被写在感光材料上,然后蚀刻线以产生一个或多个单独的光学识别元件。 可以通过将感光材料暴露于紫外线(UV)光来写入一个或多个光栅。 可以蚀刻线以通过光刻创建一个或多个单独的光学识别元件以限定/创建它们。