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公开(公告)号：US5355218A
公开(公告)日：1994-10-11
申请号：US988480
申请日：1992-12-10
CPC分类号： G01M11/0271 , G01B9/02098
摘要： A shearing interferometer measures the aberration of a lens by passing a beam through the lens, splitting the beam into plural beams with a slightly wedged plate and causing interference between the wavefronts of the beams. The front and rear optical surfaces of the wedged plate are coated with reflective thin films each having a specific reflectance and transmittance.
摘要翻译： 剪切干涉仪通过使光束通过透镜来测量透镜的像差，将光束分成具有稍微楔形板的多个光束并且引起光束的波前之间的干扰。 楔形板的前后光学表面涂覆有各自具有特定反射率和透射率的反射薄膜。
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2.发明授权Time series signal multichannel frequency analyzer using liquid crystal panel 失效时间序列信号多通道频率分析仪采用液晶面板
公开(公告)号：US5335058A
公开(公告)日：1994-08-02
申请号：US988481
申请日：1992-12-10
摘要： A time series signal multichannel frequency analyzer comprises a Fourier transform lens, a liquid crystal panel disposed at the front focal plane of the Fourier transform lens, means for inputting a time signal from a different signal source to each scanning line of the liquid crystal panel, observation means disposed at the rear focal plane of the Fourier transform lens, and a cylindrical lens disposed between the Fourier transform lens and an observation plane of the observation means.
摘要翻译： 时间序列信号多通道频率分析仪包括傅里叶变换透镜，设置在傅立叶变换透镜的前焦平面处的液晶面板，用于将来自不同信号源的时间信号输入到液晶面板的每条扫描线的装置， 设置在傅立叶变换透镜的后焦平面上的观察装置和设置在傅里叶变换透镜与观察装置的观察平面之间的柱面透镜。
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3.发明授权High stability interferometer for measuring small changes in refractive index and measuring method using the interferometer 失效用于测量折射率小的变化的高稳定性干扰计和使用干涉仪的测量方法
公开(公告)号：US5074666A
公开(公告)日：1991-12-24
申请号：US475391
申请日：1990-02-05
CPC分类号： G01N21/45 , G01J2009/0219
摘要： A high stability interferometer is capable of continuous measurement of small changes in the refractive index of a sample. The interferometer has a diffraction grating placed to be movable sideways or radially, and diffract laser light into beams which include +1, -1 and zero order beams. The diffraction grating is in the input plane of a Fourier Transform lens. The beams are brought to a focus in the output plane of the lens and are reflected back towards the lens by a mirror placed in the transform plane of the lens. The sample whose refractive index is to be measured is placed in the path of the +1 or -1 order beam, between the diffraction grating and the mirror.
摘要翻译： 高稳定性干涉仪能够连续测量样品的折射率的小变化。 该干涉仪具有放置成侧向或径向移动的衍射光栅，并将激光衍射成包括+1，-1和零级光束的光束。 衍射光栅位于傅里叶变换透镜的输入平面内。 光束在透镜的输出平面中被聚焦，并且通过放置在透镜的变换平面中的反射镜朝向透镜反射回。 折射率要被测量的样品放置在衍射光栅和反射镜之间的+1或-1级光束的路径中。
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公开(公告)号：US5018838A
公开(公告)日：1991-05-28
申请号：US375950
申请日：1989-07-06
CPC分类号： G06E3/005 , G02F1/139 , G02F2203/12 , G02F2203/18 , G02F2203/50
摘要： Optical spatial phase modulation is achieved by positioning a liquid crystal layer in the path of a light beam to be modulated and controlling the spatial distribution of refractive index of the liquid crystal layer by controlling the spatial distribution of the electrical field generated across the liquid crystal layer.
摘要翻译： 通过将液晶层定位在要调制的光束的路径中并通过控制液晶层两端产生的电场的空间分布来控制液晶层的折射率的空间分布来实现光学空间相位调制 。
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5.发明授权Apparatus for three-dimensional viewing of magnetic resonance imaging tomograms 失效用于三维观察磁共振成像断层图像的装置
公开(公告)号：US4983004A
公开(公告)日：1991-01-08
申请号：US556464
申请日：1990-07-24
申请人： Naoya Takeya , Kazuhiro Honma , Kiyofumi Matsuda
发明人： Naoya Takeya , Kazuhiro Honma , Kiyofumi Matsuda
摘要： A plurality of liquid crystal displays, each able to independently display one of a plurality of MRI tomograms, is dispersed such that the display screen of each appear planar from a common point and are positioned such that the spacing between each display screen and the next one in front or back and of it is proportional to the spacing between the cross sections belonging to the MRI tomograms displayed by those display screens. A hologram screen is provided in position facing the display screens of the plurality of displays. By illuminating the plurality of displays with light from behind, light passing through each of the display screens will impinge on the hologram screen, and part of this light will be diffracted backwards by the hologram screen, causing virtual images of the MRI tomograms to appear in front of the hologram screen.
摘要翻译： 能够独立地显示多个MRI断层图像中的一个的多个液晶显示器被分散，使得每个液晶显示器的屏幕从公共点显现为平面的并且被定位成使得每个显示屏幕和下一个显示屏幕之间的间隔 在前面或后面，它与属于由这些显示屏幕显示的MRI断层图像的横截面之间的间隔成比例。 全息画面被提供在面对多个显示器的显示屏的位置。 通过用来自后面的光照亮多个显示器，穿过每个显示屏幕的光将撞击全息屏幕，并且该部分光将被全息屏幕向后衍射，导致MRI断层图像的虚像呈现在 全息图前面。
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公开(公告)号：US4529310A
公开(公告)日：1985-07-16
申请号：US424629
申请日：1982-09-27
CPC分类号： G01B11/272
摘要： A device for the detection of the center of rotation of a rotating object under test comprises means for illuminating a laser beam on at least one position on the surface of the object thereby generating an interference fringe, means for subjecting the resultant reflected scattered laser beams to spectral analysis by the laser Doppler effect thereby finding the velocity of rotation of the position at which the interference fringe is formed on the surface, and means for determining the center of rotation on the basis of the velocity so found. Protection of the spectral analysis from the adverse effect of the pedestal component is accomplished by causing interference fringes to be formed at a plurality of positions on the surface of the object under test or by placing in the optical path for one of the pair of laser beams a prism capable of continuously modulating the laser frequency.
摘要翻译： 用于检测被测旋转物体的旋转中心的装置包括用于在物体表面上的至少一个位置照射激光束的装置，从而产生干涉条纹，用于使所得到的反射散射激光束 通过激光多普勒效应的光谱分析，从而找到在表面上形成干涉条纹的位置的旋转速度，以及用于基于如此发现的速度确定旋转中心的装置。 通过在被测物体的表面上的多个位置处形成干涉条纹或通过放置在一对激光束中的一个的光路中来实现对基准部件的不利影响的光谱分析的保护 能够连续调制激光频率的棱镜。
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公开(公告)号：US4466693A
公开(公告)日：1984-08-21
申请号：US322460
申请日：1981-11-18
CPC分类号： G01B11/2441 , G01B11/306 , G02B5/32
摘要： A holographic straightness meter comprising an optical element and a hologram disposed on a moving member and one pair of reflection elements disposed on a fixed member. The object beam and reference beam from the optical element are reflected by the reflection elements so as to impinge upon the hologram and form interference fringes on the screen placed behind the hologram. The number, interval, and inclination of these interference fringes vary with the amount of lateral displacement of the moving member. Thus by analyzing the interference fringes for such factors, the amount of the lateral displacement of the moving member can be determined.
摘要翻译： 一种全息平直度计，其包括设置在移动构件上的光学元件和全息图，以及设置在固定构件上的一对反射元件。 来自光学元件的物体光束和参考光束被反射元件反射以撞击全息图，并在放置在全息图后面的屏幕上形成干涉条纹。 这些干涉条纹的数量，间隔和倾斜度随移动部件的横向位移量而变化。 因此，通过分析这些因素的干涉条纹，可以确定移动部件的横向位移量。
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公开(公告)号：US4397550A
公开(公告)日：1983-08-09
申请号：US236053
申请日：1981-02-19
申请人： Kiyofumi Matsuda , Tomoaki Eiju
发明人： Kiyofumi Matsuda , Tomoaki Eiju
CPC分类号： G01P5/26
摘要： A laser Doppler velocimeter using two laser beams, when used for the measurement of the flow velocity of slow moving particles, fails to provide the measurement because the Doppler frequency and the pedestal component overlap on the power spectrum. This difficulty is eliminated by having a prism disposed in the path of one of the laser beams used. When this prism is continuously moved, the pedestal component and the Doppler frequency are separated from each other on the power spectrum, enabling the velocimeter to effect the measurement easily and accurately.
摘要翻译： 使用两个激光束的激光多普勒测速仪当用于测量慢速粒子的流速时，由于多普勒频率和基座分量在功率谱上重叠，所以无法提供测量。 通过在所使用的激光束之一的路径中设置棱镜来消除这种困难。 当该棱镜连续移动时，基座部件和多普勒频率在功率谱上彼此分离，使得测速仪能够容易且准确地进行测量。
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公开(公告)号：US4272192A
公开(公告)日：1981-06-09
申请号：US932180
申请日：1978-08-09
申请人： Kiyofumi Matsuda
发明人： Kiyofumi Matsuda
CPC分类号： G01N21/453 , Y10S359/90 , Y10S359/902
摘要： A transparent object can be converted into a visible image which is made up of a contrasted image of light and shade and therefore is readily perceivable with a three-dimensional illusion sensation by a method which comprises forming holograms with each of two collimated beams having slightly different angles of incidence and one reference beam, causing the reference beam to impinge upon the first hologram and thereby reproducing first order diffraction beams equivalent to the two collimated beams, then causing the reproduced diffraction beams to be passed through or reflected by the transparent object so as to impinge upon the second hologram and thereby reproducing diffraction beams laterally sheared and equivalent to the reference beam by which the second hologram was formed and imparting a suitable phase difference to these reproduced diffraction beams and thereby causing the beams to interfere with each other, whereby the phenomenon of interference thus produced on the surface of the object image gives rise to the visible image for desired observation.
摘要翻译： 透明物体可以被转换成由对比光和阴影图像组成的可视图像，因此通过包括形成全息图的三维幻觉感觉容易察觉，两个准直光束中的每一个具有略微不同 入射角和一个参考光束，使参考光束撞击第一全息图，从而再现与两个准直光束相当的一阶衍射光束，然后使再现的衍射光束透过或透过物体反射，以便 撞击在第二全息图上，从而再现横向剪切的等效于第二全息图的参考光束的衍射光束，并且对这些再现的衍射光束赋予适当的相位差，从而使光束彼此干涉，由此 因此在表面产生的干扰现象 物体图像产生用于期望观察的可见图像。
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公开(公告)号：US4118124A
公开(公告)日：1978-10-03
申请号：US744235
申请日：1976-11-23
申请人： Kiyofumi Matsuda
发明人： Kiyofumi Matsuda
CPC分类号： G01N21/453 , Y10S359/90 , Y10S359/902
摘要： The sheared interference fringe of a wavefront from an object under test is obtained by recording on a first hologram the interference fringe formed between a first reference light beam and two light beams having slightly different angles of incidence with respect to the first hologram, recording on a second hologram the interference fringe formed between a second reference light beam and the two light beams reconstructed by an illuminating light beam incident on the first hologram from the same direction as the first reference light beam, placing the first and second holograms thus obtained at a prescribed distance from each other, causing a light beam from the object under test to impinge upon the first hologram from the same direction as the first reference light beam to produce light beams and projecting the produced light beams upon the second hologram for thereby causing the second hologram to produce light beams in the same direction as the second reference light beam.
摘要翻译： 通过在第一全息图上记录在第一参考光束和相对于第一全息图具有略微不同的入射角的两个光束之间形成的干涉条纹来获得来自被测物体的波前的干涉条纹， 第二全息图，在与第一参考光束相同的方向上由第二参考光束和入射在第一全息图上的照明光束重构的两个光束之间形成的干涉条纹，将如此获得的第一和第二全息图放置在规定的 使来自被测物体的光束从与第一参考光束相同的方向撞击在第一全息图上，以产生光束并将产生的光束投影到第二全息图上，从而引起第二全息图 以沿与第二参考光束相同的方向产生光束。
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