Narrow band rejection filter utilizing a liquid crystal cell
    2.
    发明授权
    Narrow band rejection filter utilizing a liquid crystal cell 失效
    利用液晶单元的窄带滤波滤波器

    公开(公告)号:US4444469A

    公开(公告)日:1984-04-24

    申请号:US269140

    申请日:1981-06-01

    Applicant: Wilbur I. Kaye

    Inventor: Wilbur I. Kaye

    CPC classification number: G02F1/1393 G02F2203/055

    Abstract: There is disclosed a method and apparatus for implementing a narrow band rejection filter utilizing a liquid crystal cell. A liquid crystal cell is positioned in the path of a light beam between a pair of crossed or parallel polarizers with the optical axis of the cell at a 45.degree. angle to the optical axes of the polarizers. A voltage is applied to the cell to tune the cell to reject a given wavelength and to pass other wavelengths. In order to reject the given wavelength and pass all other wavelengths, the order of the cell is stepped to maintain rejection of a fixed wavelength and the detected signal from the light passing through the cell is averaged.

    Abstract translation: 公开了一种利用液晶单元实现窄带滤波滤波器的方法和装置。 液晶单元位于一对交叉或平行的偏振器之间的光束的路径中,光电池的光轴与偏振器的光轴成45度角。 电压被施加到电池以调谐电池以拒绝给定的波长并通过其它波长。 为了抑制给定的波长并通过所有其他波长,单元的阶数是阶梯式的,以维持固定波长的抑制,并且来自通过单元的光的检测信号被平均。

    Near-simultaneous measurements at forward and back scatter angles in
light scattering photometers
    3.
    发明授权
    Near-simultaneous measurements at forward and back scatter angles in light scattering photometers 失效
    在光散射光度计中的前后散射角近似同时测量

    公开(公告)号:US4355897A

    公开(公告)日:1982-10-26

    申请号:US157598

    申请日:1980-06-09

    Applicant: Wilbur I. Kaye

    Inventor: Wilbur I. Kaye

    CPC classification number: G01N21/51

    Abstract: A light scattering photometer including a rotating segmented mirror intercepting light from a laser source and alternately directing the light into a sample zone along an optical axis in first and second opposite directions. A mask annulus coaxial with the optical axis intercepts light scattered from the sample in an incremental angle .DELTA..theta. at a selected angle .theta. with respect to the axis. As the direction of sample illumination alternates, the annulus alternately intercepts forward scatter and back scatter of light from the sample at angles .theta. and 180.degree.-.theta., respectively, and passes the forward and back scatter in alternate succession to a detector. The detector output signal is demodulated to derive near-simultaneous forward and back scatter measurements from the sample. The photometer permits measurement at small values of .theta. approaching 0.degree. and hence permits near-simultaneous scatter measurements at forward and back scatter angles spaced by an angle approaching 180.degree..

    Abstract translation: 一种光散射光度计,包括从激光源截取光的旋转分段镜,并且沿着光轴在第一和第二相反方向交替地将光引导到样品区中。 与光轴同轴的掩模环与相对于轴线以选定的角度θ以增量角度ΔTATA截取从样品散射的光。 随着样本照明的方向交替,环面分别以角度θ和角度180°分别截取来自样品的光的向前散射和反向散射,并将前后散射以交替的顺序传递到检测器。 检测器输出信号被解调,以从样品中导出近似同时的前向和后向散射测量。 光度计允许在θ值接近0°的较小值下进行测量,因此允许以接近180°的角度间隔的前后散射角进行近似同时的散射测量。

    Method and apparatus for determining the wavelength of light
    4.
    发明授权
    Method and apparatus for determining the wavelength of light 失效
    用于确定光的波长的方法和装置

    公开(公告)号:US4272195A

    公开(公告)日:1981-06-09

    申请号:US45722

    申请日:1979-06-05

    Applicant: Wilbur I. Kaye

    Inventor: Wilbur I. Kaye

    CPC classification number: G01J9/00 G02F1/1313

    Abstract: A method and apparatus for determining the wavelength of a light beam wherein the light beam is directed through a liquid crystal cell functioning as a variable retarder, wherein the voltage applied to the cell is ramped to vary the retardation of the cell between maximum and minimum values, wherein the light from the beam passing through the cell is detected, wherein the intensity of the detected light is monitored, which intensity alternately passes through maximum and minimum values as the retardation of the cell is varied between its maximum and minimum values, and wherein the number of times the intensity alternates between its maximum and minimum values is determined to provide an indication of the wavelength of the light beam.

    Abstract translation: 一种用于确定光束的波长的方法和装置,其中光束被引导通过用作可变延迟器的液晶单元,其中施加到单元的电压被斜坡化以改变单元在最大值和最小值之间的延迟 其中检测来自穿过电池的光束的光,其中监测检测光的强度,当电池的延迟在其最大值和最小值之间变化时,强度交替地经过最大值和最小值,并且其中 确定强度在其最大值和最小值之间交替的次数以提供光束的波长的指示。

    Automated optical alignment system and method using Raman scattering of
capillary tube contents
    5.
    发明授权
    Automated optical alignment system and method using Raman scattering of capillary tube contents 失效
    自动光学校准系统和使用拉曼散射毛细管内容的方法

    公开(公告)号:US5614726A

    公开(公告)日:1997-03-25

    申请号:US409557

    申请日:1995-03-23

    Abstract: A system and method are disclosed for optically aligning a capillary tube and an excitation laser beam for fluorescence detection applications by utilizing the Raman scatter signals of the capillary tube's contents. For example, Raman scatter by an electrophoretic separation matrix may be used for alignment in a capillary electrophoresis system. Fluorescent material may be present and may also be used for alignment purposes, but is not necessary. The invention employs a parabolic reflector, having apertures through which the capillary tube and the laser beam are guided so that they intersect, preferably at right angles and at the focal point of the reflector. The Raman scatter signals of the material within the capillary tube are collected via a series of filters and this information is used to reposition, if necessary, a focusing lens that directs the excitation beam into the reflector and the capillary tube, so that the Raman scatter signals are maximized. Maximal Raman scatter signals indicate proper alignment of the capillary tube and the excitation beam. Other signals, such as fluorescence emission from the sample, may then be gathered. Adjustment of the focusing lens may be automated so that alignment of the capillary tube and the beam is maintained throughout analysis of the tube's contents. Sequential alignment of an array of capillary tubes with an excitation beam is also disclosed.

    Abstract translation: 公开了一种用于通过利用毛细管内容物的拉曼散射信号将毛细管和激发激光束用于荧光检测应用的系统和方法。 例如,通过电泳分离基质的拉曼散射可用于毛细管电泳系统中的比对。 可以存在荧光材料并且也可以用于对准目的,但不是必需的。 本发明采用抛物面反射器,其具有孔,毛细管和激光束通过该孔具有孔,使得它们优选地以直角相交,并在反射器的焦点处相交。 毛细管内的材料的拉曼散射信号通过一系列滤光片收集,并且该信息用于重新定位(如果需要的话)将激发光束引导到反射器和毛细管中的聚焦透镜,使得拉曼散射 信号最大化。 最大拉曼散射信号表示毛细管和激发光束的正确对准。 然后可以收集其他信号,例如来自样品的荧光发射。 聚焦透镜的调整可以是自动化的,以便在分析管的内容物时保持毛细管和束的对准。 还公开了具有激发束的毛细管阵列的顺序对准。

    Stray radiation compensation
    6.
    发明授权
    Stray radiation compensation 失效
    散射辐射补偿

    公开(公告)号:US5128549A

    公开(公告)日:1992-07-07

    申请号:US502359

    申请日:1990-03-30

    Applicant: Wilbur I. Kaye

    Inventor: Wilbur I. Kaye

    CPC classification number: G01J3/2803 G01J3/28 G01N2201/064

    Abstract: A method of measuring and compensating stray light in absorbance analysis that use a multiple element array detector wherein one or more of the elements of the diode array are utilized to detect stray radiation in the absence of primary radiation including higher order diffracted radiation. In one aspect, the atmosphere is used to filter all primary radiation below a particular wavelength so that one or more array elements corresponding to detection below such wavelength can be dedicated to the detection of only stray radiation. Detection of higher order diffractions can be prevented by dividing the total spectrum into intervals and detecting these intervals in sequence. In another aspect, a diode array is designed to include additional elements along one side of the array outside the exposure of the primary radiation for the sole purpose of detecting stray radiation.

    Stray light measurement and compensation
    7.
    发明授权
    Stray light measurement and compensation 失效
    杂散光测量和补偿

    公开(公告)号:US4526470A

    公开(公告)日:1985-07-02

    申请号:US355281

    申请日:1982-03-05

    Applicant: Wilbur I. Kaye

    Inventor: Wilbur I. Kaye

    CPC classification number: G01J3/28 G01J3/42 G01N2201/064

    Abstract: Methods for stray light measurement and compensation in spectrophotometers are disclosed. In one exemplary embodiment, stray light is determined as a convolution of a selected detected radiant power spectrum and a monochromator slit function. Such a stray light measurement may be made with or without the sample in an optical path between a source and detector within the spectrophotometer. When made with the sample in the optical path, the resulting stray light measurement may be used to compensate sample absorbance or transmittance measurements. In accordance with another embodiment of the present invention, sample absorbance or transmittance may be compensated in a method including measuring sample detected radiant power at a wavelength outside an interval of significant detected radiant power within which a sample measurement compensated for stray is desired.

    Abstract translation: 公开了分光光度计中杂散光测量和补偿的方法。 在一个示例性实施例中,杂散光被确定为所选择的检测到的辐射功率谱和单色仪狭缝功能的卷积。 这样的杂散光测量可以在分光光度计内的源和检测器之间的光路中或不使用样品的情况下进行。 当用光路中的样品制成时,可以使用所得到的杂散光测量来补偿样品吸光度或透射率测量。 根据本发明的另一个实施例,可以通过以下方法补偿样品吸收度或透射率,该方法包括测量在需要补偿杂散的样品测量的显着检测的辐射功率的间隔之外的波长处的检测到的辐射功率。

    Wavelength accuracy test solution
    8.
    发明授权
    Wavelength accuracy test solution 失效
    波长精度测试解决方案

    公开(公告)号:US4461718A

    公开(公告)日:1984-07-24

    申请号:US330972

    申请日:1981-12-15

    CPC classification number: G01N21/278 Y10T436/10 Y10T436/109163

    Abstract: A wavelength calibration solution comprising from about 0.025 to about 0.140 molar neodymium and from about 0.135 to about 0.550 molar samarium, wherein the neodymium is present as a neodymium ionized constituent and the samarium is present as a samarium ionized constituent.A method for checking the wavelength accuracy of spectrometers or spectrophotometers of the type comprising measuring the absorbance (A) or percent transmittance (% T) of a wavelength calibration check solution versus a blank at more than one wavelength. The method is characterized in that the above solution is employed therein as the wavelength calibration check solution.

    Abstract translation: 包括约0.025至约0.140摩尔钕和约0.135至约0.550摩尔钐的波长校准溶液,其中所述钕作为钕离子化成分存在,并且所述钐以钐电离成分存在。 一种用于检查波长校准检测溶液相对于多于一个波长的空白的吸光度(A)或透光率(%T)的类型的分光计或分光光度计的波长精度的方法。 该方法的特征在于,将上述溶液用作波长校准检查溶液。

    Marking and authenticating documents with liquid crystal materials
    10.
    发明授权
    Marking and authenticating documents with liquid crystal materials 失效
    用液晶材料标记和认证文件

    公开(公告)号:US4514085A

    公开(公告)日:1985-04-30

    申请号:US392838

    申请日:1982-06-28

    Applicant: Wilbur I. Kaye

    Inventor: Wilbur I. Kaye

    CPC classification number: G07F7/086 B41M3/14 G06K19/14

    Abstract: Method and apparatus for authenticating documents such as government notes and currency, stock certificates, and the like by marking the document with an encapsulated dyed liquid crystal material and examining the document for unique optical characteristics of the mark. Reading apparatus for the document measures changes in reflectivity of the liquid crystal mark with changes in an electrical field applied thereto. In other embodiments, reflectivity is measured at a plurality of different wavelengths. In one embodiment, the dye absorbs in regions of the electromagnetic spectrum "invisible" to the human eye and the reading apparatus monitors reflectivity changes at these invisible wavelengths.

    Abstract translation: 通过用封装的染色液晶材料标记文件并对该文件进行商标的独特的光学特性的验证,以便对诸如政府纸币和货币,证券等的文件进行认证的方法和装置。 用于该文件的读取装置通过施加于其上的电场的变化来测量液晶标记的反射率的变化。 在其他实施例中,在多个不同波长处测量反射率。 在一个实施方案中,染料在对人眼“不可见”的电磁谱的区域中吸收,并且读取装置监测在这些不可见波长处的反射率变化。

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