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公开(公告)号：US3749909A
公开(公告)日：1973-07-31
申请号：US3749909D
申请日：1972-03-06
Applicant: STANFORD RESEARCH INST
Inventor： HILL R
CPC classification number: G01N24/002
Abstract: An arrangement for deflecting specified polar molecules in a molecular beam is provided whereby detection and analysis of beam content may be achieved.
Abstract translation: 提供了用于偏转分子束中的特定极性分子的装置，由此可以实现波束含量的检测和分析。
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公开(公告)号：US3749493A
公开(公告)日：1973-07-31
申请号：US3749493D
申请日：1972-01-05
Applicant: STANFORD RESEARCH INST
Inventor： MACOVSKI A , MACOVSKI A
CPC classification number: G01C11/025 , G01C11/00
Abstract: Altitude contour lines are generated on the image of a surface so that a photographic contour map can be made. The contour lines are generated as light interference fringes (a light interference pattern) by modulating both the light illuminating the surface being mapped and the light reflected from the surface. Modulation of either the illuminating or the reflected light must be periodic and the altitude difference between contour lines is determined by the frequency or periodicity of modulation.
Abstract translation: 在表面的图像上生成高度轮廓线，使得可以制作照相轮廓图。 轮廓线通过调制照射被映射表面的光和从表面反射的光而产生为光干涉条纹（光干涉图案）。 照明或反射光的调制必须是周期性的，轮廓线之间的高度差由调制的频率或周期性决定。
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公开(公告)号：US3742396A
公开(公告)日：1973-06-26
申请号：US3742396D
申请日：1971-07-23
Applicant: STANFORD RESEARCH INST
CPC classification number: H03H9/14502
Abstract: A transducer for exciting and/or detecting surface acoustic waves at both UHF and microwave frequencies in piezoelectric materials comprises a plurality of parallel spaced conductors deposited on the surface of the piezoelectric material.
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公开(公告)号：US3724932A
公开(公告)日：1973-04-03
申请号：US3724932D
申请日：1971-04-09
Applicant: STANFORD RESEARCH INST
Inventor： CORNSWEET T , CRANE H
Abstract: A technique and apparatus for two dimensional tracking of eye position. An infrared pattern is projected into the eye and measurements taken of the spatial separation of the first and fourth Purkinje reflections, the reflections from the cornea and the back of the eye lens, respectively. Because the centers of curvature of the surfaces of the cornea and lens lie at different distances from the center of rotation of the eye, these reflections move in opposite directions under eye rotation, in either the vertical or the horizontal direction. During translation of the eye in either the vertical or the horizontal direction the spacing or separation between the two Purkinje images does not change. In one embodiment, a rotating scanning disc having a plurality of spaced orthogonal slits is provided and imaging means are provided for imaging the first and fourth Purkinje images of the light source through the orthogonal slits of the scanning disc onto a photomultiplier tube. The time period between pulse outputs of the photomultiplier tube is proportional to the separation of the first and fourth Purkinje images. In another embodiment the two Purkinje images are deflected so as to be incident on photodetectors. The photodetectors and deflecting means are movable so that the two Purkinje images are kept centered on their respective photodetectors. By monitoring the position of the photodetectors and deflecting means an indication is obtained of the separation of the Purkinje images which gives an indication of the orientation of the optic axis of the eye.
Abstract translation: 用于二维跟踪眼睛位置的技术和装置。 将红外图案投射到眼睛中，并分别测量第一次和第四次浦肯野反射的空间分离，来自角膜和眼透镜背面的反射。 因为角膜和透镜的表面的曲率中心位于与眼睛的旋转中心不同的距离处，所以这些反射在眼睛旋转下沿垂直或水平方向在相反方向上移动。 在垂直或水平方向平移眼睛时，两个浦肯野图像之间的间距或间距不会改变。 在一个实施例中，提供了具有多个间隔开的正交狭缝的旋转扫描盘，并且提供成像装置，用于通过扫描盘的正交狭缝将光源的第一和第四浦肯野图像成像到光电倍增管上。 光电倍增管的脉冲输出之间的时间周期与第一和第四浦肯野图像的分离成比例。 在另一个实施例中，两个浦肯野图像被偏转以便入射到光电探测器上。 光电检测器和偏转装置是可移动的，使得两个浦肯野图像保持居中在它们各自的光电检测器上。 通过监测光电检测器和偏转装置的位置，可以获得Purkinje图像的分离的指示，其给出了眼睛的光轴的取向的指示。
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公开(公告)号：US3723773A
公开(公告)日：1973-03-27
申请号：US3723773D
申请日：1971-05-27
Applicant: STANFORD RESEARCH INST
CPC classification number: H04J1/085 , H03H11/1213 , H04J1/08
Abstract: An active inductance of essentially infinite Q for use at microwave frequencies is used as a general circuit element, particularly in single and multiple resonator filters and in channel separators for multiplexing applications. The basic circuit element is configured (constructed) utilizing the emitter electrode of a transistor as the input port, the collector electrode is grounded, and the base electrode circuit is adjusted so inductance and useful negative resistance are translated to the emitter from the base circuit at substantially the center of the desired frequency band of operation. The transistor current is adjusted so that the internal emitter resistance of the transistor essentially cancels the negative translated resistance to yield a synthesized microwave inductance with very high Q.
Abstract translation: 用于微波频率的基本上无限Q的有源电感被用作通用电路元件，特别是在单个和多个谐振器滤波器以及用于复用应用的信道分离器中。 基本电路元件利用晶体管的发射极作为输入端口被配置（构造），集电极接地，并且基极电极被调整为使得电感和有用的负电阻从基极电路转换为发射极 基本上是所需频带操作的中心。 调节晶体管电流，使得晶体管的内部发射极电阻基本抵消负平移电阻，产生具有非常高Q值的合成微波电感。
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Patent Agency Ranking
公开(公告)号：US3714272A
公开(公告)日：1973-01-30
申请号：US3714272D
申请日：1972-02-07
Applicant: STANFORD RESEARCH INST
IPC: C07B43/02 , C07C201/08 , C07C205/06 , C07C205/11 , C07C205/12 , C07C79/10 , C07C79/12
CPC classification number: C07B43/02 , C07C201/08 , C07C205/06 , C07C205/11 , C07C205/12
Abstract: TWO MOLES OF TRIFLUOROMETHANESULFONIC ACID COMBINE WITH ONE MOLE OF NITRIC ACID TO FORM A WHITE CRYSTALLINE SOLID HAVING EXCELLENT NITRATING CAPABILITIES WHEN EMPLOYED EITHER IN AN ORGANIC SOLVENT MEDIUM OR IN SULFURIC ACID OR AN EXCESS OF THE TRIFLUOROMETHANESULFONIC ACID. THE NITRATION REACTION CAN BE CONDUCTED USING ONE OR ANOTHER OF THESE MEDIA AT TEMPERATURES RANGING FROM ABOUT -110* TO 30*C., WITH ANY SIDE REACTIONS BEING SUBSTANTIALLY ABSENT. THE PROCESS IS CHARACTERIZED BY HIGH POSITIONAL SELECTIVITY, AND WHEN NITRATING TOLUENE TO DINITROTOLUENE, TOTAL CONTENT OF META ISOMERS CAN BE KEPT AT LEVELS WELL BELOW 1 PERCENT BY USING AN ORGANIC SOLVENT AND LOW TEMPERATURES. YIELDS EXCEED 98 PERCENT.
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公开(公告)号：US3712716A
公开(公告)日：1973-01-23
申请号：US3712716D
申请日：1971-04-09
Applicant: STANFORD RESEARCH INST
Inventor： CORNSWEET T , CRANE H
CPC classification number: A61B3/113
Abstract: An eye tracker for continuously tracking orientation of the optic axis of an eye in which the eye is flooded with light so that Purkinje images are formed. Two of the Purkinje images are deflected so as to be incident on photodetectors. In one embodiment the detectors and the light source are moved so that the light sources move to keep the Purkinje images centered on the two photodetectors with a fixed distance between the images. The positions of the light source in order to obtain the predetermined distance between the Purkinje images is monitored and gives an indication of the orientation of the optic axis of the eye. In another embodiment only one photodetector is used with two alternating light sources and means are provided to form the two Purkinje images respectively from the two light sources. Further means are provided with the photodetector for differentiating between the two Purkinje images.
Abstract translation: 用于连续跟踪眼睛的光轴的取向的眼睛跟踪器，其中眼睛被光充满，从而形成浦肯野图像。 浦肯野图像中的两个被偏转以便入射到光电检测器上。 在一个实施例中，检测器和光源被移动，使得光源移动以将图像之间的距离保持在两个光电探测器的中心的浦肯野图像。 监测光源的位置以获得浦肯野图像之间的预定距离，并给出眼睛光轴方向的指示。 在另一个实施例中，仅使用一个光电检测器与两个交替光源，并且提供装置以分别从两个光源形成两个浦肯野图像。 还提供了用于区分两个浦肯野图像的光电检测器的装置。
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公开(公告)号：US3708546A
公开(公告)日：1973-01-02
申请号：US3708546D
申请日：1972-01-17
Applicant: STANFORD RESEARCH INST
Inventor： COON C , MCDONALD G , HILL M
IPC: C07C205/06 , C07C79/10
CPC classification number: C07C201/08 , C07C205/06
Abstract: Mixtures of dinitrotoluene isomers containing extremely small amounts of meta isomers are rapidly prepared in quantitative yield by temperatures in the presence of a small amount of water. Total meta isomer content can readily be kept at a level below about 2 percent by weight.
Abstract translation: 含有极少量的异构体的二硝基甲苯异构体的混合物通过在少量水存在下的温度以定量的产率快速制备。 总的异构体含量可以容易地保持在低于约2重量％的水平。
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公开(公告)号：US3705407A
公开(公告)日：1972-12-05
申请号：US3705407D
申请日：1970-09-21
Applicant: STANFORD RESEARCH INST
Inventor： WICKERSHAM ARTHUR F
Abstract: An antenna for radio surface waves may be constructed from a conductor such as a tube or a flat plate which is an even multiple of wavelengths long. There is a discontinuity or gap in the conductor about one-quarter wavelength from one end, which is on the order of one-fourth inch. The antenna is normally supported from 3 to 12 inches above the earth''s surface and is excited longitudinally by a transverse electromagnetic mode (TEM) by connecting a source of excitation to the surface of the tube on both sides of the discontinuity, or to the surface of the flat plate on both sides of the discontinuity.
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公开(公告)号：US3699132A
公开(公告)日：1972-10-17
申请号：US3699132D
申请日：1970-09-02
Applicant: STANFORD RESEARCH INST
Inventor： ACTON EDWARD M , LEAFFER MORRIS A , STONE HERBERT
IPC: C07D303/36 , C07D1/00 , C07D1/06
CPC classification number: C07D303/36
Abstract: 8,9-Epoxyperillartine optical isomers having good sweetness and no or moderately low bitter aftertaste characteristics, along with an increased solubility in water as compared with the corresponding perillartine precursor isomers. These epoxy derivatives are also free of the undesirable gingery-licorice taste of perillartine. The new compounds give no evidence of toxicity and can be employed in foods as synthetic sweetening ingredients.
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