Raman analysis apparatus
    1.
    发明授权
    Raman analysis apparatus 失效
    拉曼分析仪器

    公开(公告)号:US5194912A

    公开(公告)日:1993-03-16

    申请号:US543729

    申请日:1990-08-06

    摘要: A sample (14) is illuminated by light from a laser source (16), which is reflected to it by a dichroic filter (18) and passed through a microscope objective (20). The microscope objective (20) focusses a two dimensional image of the illuminated area onto a detector (22). On the way to the detector (22), the light passes through an interference filter (26), which selects a desired line from the Raman spectrum scattered by the sample (14). The filter (26) can be tuned to any desired Raman line by rotating it through various angles of incidence (.THETA.), about an axis (28) perpendicular to the optical axis.

    摘要翻译: PCT No.PCT / GB89 / 01532 Sec。 371日期1990年8月6日 102(e)日1990年8月6日PCT 1989年12月22日PCT公布。 出版物WO90 / 07108 日期为1990年6月28日。样品(14)由来自激光源(16)的光照射,其被二向色滤光器(18)反射并通过显微镜物镜(20)。 显微镜物镜(20)将照明区域的二维图像聚焦到检测器(22)上。 在到达检测器(22)的途中,光通过干涉滤光器(26),其从由样品(14)散射的拉曼光谱中选择所需的线。 过滤器(26)可以通过绕垂直于光轴的轴线(28)将其旋转穿过各种入射角(THETA)而被调谐到任何所需的拉曼线。

    Laser diode system for Raman spectroscopy
    2.
    发明授权
    Laser diode system for Raman spectroscopy 失效
    用于拉曼光谱的激光二极管系统

    公开(公告)号:US5657120A

    公开(公告)日:1997-08-12

    申请号:US574164

    申请日:1995-12-18

    申请人: Brian J. E. Smith

    发明人: Brian J. E. Smith

    CPC分类号: H01S5/065 H01S5/141 H01S5/143

    摘要: A diffraction grating receives a laser beam from a semiconductor laser diode. Light is diffracted in a first order of diffraction of the grating, through an aperture which selects a desired wavelength, free from side modes of the laser diode. A minor proportion of the light is reflected back by a glass window, and is fed back into the laser diode to stabilise it, preventing mode hopping. The majority of the light of the desired wavelength passes through the window to an output. Because the output light is both free from side modes and not subject to mode hopping, it is suitable for use as the exciting light in spectroscopy, including Raman spectroscopy.

    摘要翻译: 衍射光栅接收来自半导体激光二极管的激光束。 光通过选择所需波长的孔而以光栅的衍射的一阶衍射,没有激光二极管的侧面模式。 一小部分光被玻璃窗反射回来,并被反馈到激光二极管中以使其稳定,防止模式跳跃。 所需波长的大部分光通过窗口到达输出。 由于输出光均不受边模的影响,不受模式跳跃的影响,因此适用于光谱中的激发光,包括拉曼光谱。

    Spectroscopic probe
    3.
    发明授权
    Spectroscopic probe 失效
    光谱探针

    公开(公告)号:US06809813B2

    公开(公告)日:2004-10-26

    申请号:US09936305

    申请日:2001-09-12

    IPC分类号: G01N2164

    摘要: A spectroscopic probe includes a monolithic block (10) of transparent material and GRIN lenses (20, 22, 24). Light for illuminating a sample is delivered by an optical fiber (31), and light scattered by the sample is output by an optical fiber (33). The block (10) has opposing angled faces (12A, 12B), coated with a dichroic filter coating and a reflective coating respectively. A method for making blocks (10) is also disclosed, in which the coatings are first provided on a large sheet, and blocks (10) are then cut from the sheet using angled cuts. Since the coated block reduces the number of components required, the probe can be miniaturized, e.g. for use in an endoscope.

    摘要翻译: 分光探头包括透明材料的整体块(10)和GRIN透镜(20,22,24)。 用于照射样品的光由光纤(31)传送,由样品散射的光由光纤(33)输出。 块(10)具有分别涂覆有二向色过滤器涂层和反射涂层的相对的倾斜面(12A,12B)。 还公开了制造块(10)的方法,其中首先将涂层设置在大片材上,然后使用角度切割从片材上切割块(10)。 由于涂覆的块减少了所需的组分数量,所以可以使探针小型化,例如, 用于内窥镜。

    Mounting for optical components
    4.
    发明授权
    Mounting for optical components 失效
    安装光学元件

    公开(公告)号:US06322223B1

    公开(公告)日:2001-11-27

    申请号:US09708627

    申请日:2000-11-09

    IPC分类号: G02B7182

    CPC分类号: G01J3/02 G01J3/0202 G02B7/003

    摘要: A mounting for optical components, e.g. in spectroscopic apparatus, has a rotatable baseplate 10, on which a plurality of quadrant-shaped mounting plates 12 can be kinematically located. Each mounting plate 12 carries respective optical components, which can be brought into and out of an optical path by rotation of the base plate 10. One or more of the mounting plates 12 carries both a housing 14 for components such as filters 20,22 and also a beam steering mirror 24 on a bracket 16. A gap is provided between the housing 14 and the mirror 24, so that the light beam 30 in the optical path can pass unhindered through the gap when this mounting plate is in an inoperative position.

    摘要翻译: 用于光学部件的安装,例如。 在分光装置中,具有可旋转的底板10,多个象限形安装板12可以在其上运动地定位。 每个安装板12携带相应的光学部件,其可以通过基板10的旋转而进入和离开光路。一个或多个安装板12承载用于诸如过滤器20,22和 在支架16上也设有光束转向反射镜24.在壳体14和反射镜24之间提供间隙,使得当该安装板处于非工作位置时,光路30中的光束30可以通过间隙而不受阻碍地通过。

    Spectroscopic apparatus and methods
    5.
    发明授权
    Spectroscopic apparatus and methods 失效
    光谱仪和方法

    公开(公告)号:US5689333A

    公开(公告)日:1997-11-18

    申请号:US438270

    申请日:1995-05-10

    摘要: A sample placed under a microscope is illuminated by light from a laser beam. Raman scattered light is passed back via a dichroic filter to various optical components which analyse the Raman spectrum, and thence to a CCD detector. The optical components for analysing the Raman spectrum include tunable dielectric filters in a filter wheel; a Fabry-Perot etalon; and a diffraction grating. These various components may be swapped into the optical path as desired, for example using movable mirrors, enabling the apparatus to be used very flexibly for a variety of different analysis procedures. Various novel analysis methods are also described.

    摘要翻译: 置于显微镜下的样品由来自激光束的光照射。 拉曼散射光通过二向色滤光器返回到分析拉曼光谱的各种光学部件,然后到CCD检测器。 用于分析拉曼光谱的光学部件包括滤光轮中的可调介质滤光器; 法布里 - 珀罗标准具; 和衍射光栅。 这些各种组件可以根据需要被交换到光路中,例如使用可移动反射镜,使得能够非常灵活地使用该设备用于各种不同的分析过程。 还描述了各种新颖的分析方法。

    Spectrum splitting spectroscopic apparatus
    6.
    发明授权
    Spectrum splitting spectroscopic apparatus 失效
    频谱分光光谱仪

    公开(公告)号:US5638173A

    公开(公告)日:1997-06-10

    申请号:US578651

    申请日:1996-01-16

    摘要: In a Raman spectrometer having a charge-coupled device (CCD) detector (24), an incoming beam (36) containing a spectrum of Raman scattered light is dispersed by a diffraction grating (44). Different parts of the spectrum are split into separate optical paths (48A-C) by edge filters (38A, 38B) and a mirror (46). These components are tilted at different vertical angles, so that after the beams (48A-C) have been dispersed by the diffraction grating (44), they form partial spectra (50A-C), one above the other on the CCD (24). This enables several consecutive parts of a widely dispersed spectrum to be viewed simultaneously on the CCD (24) at high resolution.

    摘要翻译: PCT No.PCT / GB95 / 01190 Sec。 371日期1996年1月16日 102(e)日期1996年1月16日PCT提交1995年5月24日PCT公布。 公开号WO95 / 32408 日期:1995年11月30日在具有电荷耦合器件(CCD)检测器(24)的拉曼光谱仪中,包含拉曼散射光谱的入射束(36)通过衍射光栅(44)分散。 频谱的不同部分被边缘滤波器(38A,38B)和反射镜(46)分离成单独的光路(48A-C)。 这些部件以不同的垂直角度倾斜,使得在光束(48A-C)已经被衍射光栅(44)分散之后,它们在CCD(24)上形成分光谱(50A-C) 。 这使得能够以高分辨率在CCD(24)上同时观察到广泛分散的光谱的几个连续部分。

    Spectroscopic apparatus with dispersive device for collecting sample data in synchronism with relative movement of a focus
    7.
    发明授权
    Spectroscopic apparatus with dispersive device for collecting sample data in synchronism with relative movement of a focus 有权
    具有分散装置的光谱装置,用于与聚焦的相对运动同步地收集样本数据

    公开(公告)号:US08179526B2

    公开(公告)日:2012-05-15

    申请号:US12458815

    申请日:2009-07-23

    IPC分类号: G01J3/44

    摘要: In a Raman spectroscopy apparatus, exciting light is focussed on a sample (26) as a line focus 38. Spectra from points in the line focus are dispersed in rows 46 on a CCD detector 34, having a two-dimensional array of pixels. The line focus moves longitudinally in a direction Y (arrow 48) relative to the sample. Simultaneously and synchronously, charge is shifted in a parallel direction Y′ (arrow 50) within the CCD, so that data from a given point in the sample continues to accumulate. This ensures that the data from each sample point arises from illumination which is integrated along the line focus, and makes it easier to stitch the data together subsequently to form an image of the sample. In order to provide averaging in the X direction during fast, low resolution scanning, the line focus is swept across the sample in a zig-zag fashion, between boundary lines 60.

    摘要翻译: 在拉曼光谱仪器中,激发光聚焦在作为线焦点38的样品(26)上。来自线焦点中的点的光谱分散在具有二维像素阵列的CCD检测器34上的行46中。 线对焦相对于样品沿Y方向(箭头48)纵向移动。 同时同步地,电荷在CCD内沿平行方向Y'(箭头50)移动,使得来自样品中给定点的数据继续积累。 这确保来自每个采样点的数据来自沿着线焦点集成的照明,并且使得更容易将数据拼接在一起以形成样本的图像。 为了在快速,低分辨率扫描期间在X方向上提供平均,在边界线60之间以线锯方式扫描线对焦。