公开(公告)号：US08564882B2

公开(公告)日：2013-10-22

申请号：US13092212

申请日：2011-04-22

申请人： Kazuhiro Minami ,  Kazuhiro Yamada

发明人： Kazuhiro Minami ,  Kazuhiro Yamada

IPC分类号： G02B5/18

CPC分类号： G02B27/4272 ,  G02B5/1842 ,  G02B5/1866 ,  G02B5/1895 ,  G02B27/4211 ,  G02B27/4266

摘要： A diffractive optical element includes first and second optical members which are stacked. The first optical member includes a diffraction grating in which a plurality of raised portions each having a vertical surface and a surface inclined to the vertical surface are arranged. The second optical member includes a diffraction grating in which a plurality of recessed portions are arranged, to which the raised portions are fitted. The diffraction grating of the first optical member and the diffraction grating of the second optical member are in close contact with each other. A ridge portion of the raised portion defines a curved surface. A curvature radius R (μm) of the curved surface, a pitch P (mm) of the raised portions, and a refractive index difference Δnd between the first and second optical members satisfy a predetermined relationship.

摘要翻译： 衍射光学元件包括堆叠的第一和第二光学构件。 第一光学构件包括衍射光栅，其中布置有具有垂直表面的多个凸起部分和与垂直表面倾斜的表面。 第二光学构件包括其中布置有多个凹部的衍射光栅，凸起部分装配到该衍射光栅。 第一光学构件的衍射光栅和第二光学构件的衍射光栅彼此紧密接触。 凸起部分的脊部限定弯曲表面。 曲面的曲率半径R（母），凸部的间距P（mm）和第一和第二光学部件之间的折射率差Deltand满足预定关系。

公开(公告)号：US20120062760A1

公开(公告)日：2012-03-15

申请号：US13231412

申请日：2011-09-13

申请人： Iftach Klapp ,  David Mendlovic

发明人： Iftach Klapp ,  David Mendlovic

IPC分类号： H04N5/228 ,  G03B13/18

CPC分类号： G06T5/003 ,  G02B26/06 ,  G02B27/0075 ,  G02B27/4266 ,  G02B27/46 ,  G06T2207/10004 ,  H04N5/2254 ,  H04N5/23232

摘要： An imaging device is presented for use in an imaging system capable of improving the image quality. The imaging device has one or more optical systems defining an effective aperture of the imaging device. The imaging device comprises a lens system having an algebraic representation matrix of a diagonalized form defining a first Condition Number, and a phase encoder utility adapted to effect a second Condition Number of an algebraic representation matrix of the imaging device, smaller than said first Condition Number of the lens system.

摘要翻译： 呈现成像装置用于能够提高图像质量的成像系统中。 成像装置具有限定成像装置的有效孔径的一个或多个光学系统。 成像装置包括具有定义第一条件数的对角化形式的代数表示矩阵的透镜系统和适于实现成像装置的代数表示矩阵的第二条件数的相位编码器实用程序，小于所述第一条件数 的镜头系统。

公开(公告)号：US06343307B1

公开(公告)日：2002-01-29

申请号：US09277322

申请日：1999-03-26

申请人： David Mendlovic ,  Zeev Zalevsky ,  Gal Shabtay ,  Uriel Levy ,  Emanuel Marom ,  Naim Konforti

发明人： David Mendlovic ,  Zeev Zalevsky ,  Gal Shabtay ,  Uriel Levy ,  Emanuel Marom ,  Naim Konforti

IPC分类号： G06G702

CPC分类号： G06E1/00 ,  G02B5/20 ,  G02B27/42 ,  G02B27/4233 ,  G02B27/4266

摘要： A method and system for synthesizing a desired light beam including calculating a two-dimensional light filter for an optical element, the two-dimensional light filter being such that the optical element produces under free space propagation, in response to illumination thereof, a three-dimensional light distribution that approximates the light distribution of the desired light beam, and illuminating the optical element.

摘要翻译： 一种用于合成期望光束的方法和系统，包括计算用于光学元件的二维光滤波器，所述二维滤光器使得光学元件响应于其照明而在自由空间传播下产生三维滤光器， 近似于期望光束的光分布并且照射光学元件的三维光分布。

公开(公告)号：US5600432A

公开(公告)日：1997-02-04

申请号：US263897

申请日：1994-06-21

申请人： J. Michael Lengyel ,  Randy M. Maner ,  Larry A. Nelson

发明人： J. Michael Lengyel ,  Randy M. Maner ,  Larry A. Nelson

IPC分类号： G02B27/42 ,  G01N21/00

CPC分类号： G02B27/4266 ,  G02B27/42

摘要： A photographic facsimile of a line image at a predetermined orientation is illuminated by a collimated monochromatic light source to produce a diffraction pattern. The diffraction pattern is focussed by a converging lens to image the Fourier transform of the line image on a spatial frequency plane. The image in the spatial frequency plane is applied to a detector for measuring the spatial power distribution as a function of the spatial frequency. The line image is then reoriented in the image plane, and successive measurements made as the image is rotated in the image plane. Resolution is quantified in the spatial frequency plane as the magnitude of a selected signal as a function of displacement (i.e, spatial frequency). By simulating selected imaging components and generating a resultant line image, the resolution of any imaging system component may be measured.

摘要翻译： 以预定取向的线图像的摄影传真由准直单色光源照射以产生衍射图案。 衍射图案由会聚透镜聚焦，以在空间频率平面上对行图像的傅立叶变换进行成像。 将空间频率平面中的图像应用于用于测量作为空间频率的函数的空间功率分布的检测器。 然后将线图像重新定向在图像平面中，并且随着图像在图像平面中旋转而进行的连续测量。 分辨率在空间频率平面中被量化为所选信号的幅度作为位移的函数（即空间频率）。 通过模拟所选择的成像组件并产生合成线图像，可以测量任何成像系统组件的分辨率。

公开(公告)号：US3726593A

公开(公告)日：1973-04-10

申请号：US3726593D

申请日：1970-04-22

申请人： SALEM K

发明人： SALEM K

IPC分类号： G02B27/42 ,  G01N21/00

CPC分类号： G02B27/4266 ,  G01N21/53 ,  G01N21/8803 ,  G01N21/94 ,  G02B27/42

摘要： An apparatus is provided for directly observing with the unaided eye, particles one micron and smaller in diameter, in which a source of light is adapted with a converging lens which collects the light and causes the incident beam to come to a point focus, and when appropriately viewed from a common angle to the light source, light source itself being obscured from sight, light in the area of convergence becomes discernible and scattering of such light by individual particles is then observable when such size particles are present.

摘要翻译： 提供一种装置，用于直接与未辅助眼睛观察到的直径为一微米和更小的颗粒，其中光源适用于收集光并使入射光束进入点聚焦的会聚透镜， 并且当从光源的共同角度适当地观察时，光源本身被视线遮蔽，会聚区域中的光变得可辨别，并且当存在这种尺寸的颗粒时，可以观察到由各个颗粒散射的这种光。

公开(公告)号：US20230244085A1

公开(公告)日：2023-08-03

申请号：US18004106

申请日：2021-07-05

申请人： HANGZHOU UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTD.

发明人： Muyun WANG ,  Dongliang ZHANG

IPC分类号： G02B27/42 ,  G02B27/00

CPC分类号： G02B27/4266 ,  G02B27/0012

摘要： A periodic optimization method for a diffractive optical element includes converting coordinates of individual target spots of a target spot array into angular spectrum coordinates, selecting an initial period, calculating diffraction orders of individual target spots, rounding the diffraction order, calculating the coordinates of actual projection spots by using the rounded diffraction orders, calculating evaluation indicator of period optimization, adjusting the period, and repeating the steps, and comparing the evaluation indicators to determine an optimal period for the diffractive optical element. With the periodic optimization method, an actual spot array is made to match a target spot array to the greatest possible extent with a small amount of calculations, thereby improving the design quality and accuracy of a diffractive optical element.

公开(公告)号：US20180259786A1

公开(公告)日：2018-09-13

申请号：US15967825

申请日：2018-05-01

申请人： Yakov Soskind ,  Michael Soskind ,  Rose Soskind

发明人： Yakov Soskind ,  Michael Soskind ,  Rose Soskind

IPC分类号： G02B27/42 ,  G02B27/00 ,  G02B27/09

CPC分类号： G02B27/4266 ,  G02B27/0037 ,  G02B27/0087 ,  G02B27/0927 ,  G02B27/0944

摘要： A method of performing coherent transformations of optical fields includes forming a far field distribution of the input optical field. A fraction of the formed far field is diffracted by producing localized discontinuities within said far field. A Fraunhofer diffraction pattern of the diffracted optical field is formed. The Fraunhofer diffraction pattern is modified by producing localized optical path differences within the Fraunhofer diffraction pattern. The transformed output optical field is produced in the far field with respect to the modified Fraunhofer diffraction pattern.

公开(公告)号：US10061122B2

公开(公告)日：2018-08-28

申请号：US15216349

申请日：2016-07-21

申请人： Graduate School at Shenzhen, Tsinghua University

发明人： Qian Zhou ,  Jinchao Zhang ,  Xinghui Li ,  Kai Ni ,  Jinchao Pang ,  Haifei Hu ,  Hao Dong ,  Huanhuan Wang ,  Xiangwen Zhu ,  Lanlan Wang

IPC分类号： G02B27/00 ,  G02B5/18 ,  G02B27/42

CPC分类号： G02B27/0012 ,  G02B5/1876 ,  G02B27/00 ,  G02B27/0037 ,  G02B27/4266

摘要： An optimized design method for manufacturing a Fresnel grating is disclosed, including the following steps: (1) making a Fresnel surface type of the Fresnel grating equivalent to a curved surface type, and determining, based on the curved surface type to which the Fresnel surface type is equivalent, an optical path difference function of the Fresnel grating: Φ (λ)= − +Nmλ; and (2) determining a Fresnel grating parameter that minimizes a function value of the optical path difference function, so as to manufacture a Fresnel grating that has an aberration elimination effect. The manufactured Fresnel grating may effectively eliminate a portion of aberrations of the Fresnel grating, and increase a resolution of a spectrometer.

公开(公告)号：US10018851B2

公开(公告)日：2018-07-10

申请号：US14826435

申请日：2015-08-14

申请人： Yakov Soskind ,  Michael Soskind ,  Rose Soskind

发明人： Yakov Soskind ,  Michael Soskind ,  Rose Soskind

IPC分类号： G02B27/00 ,  G02B27/09 ,  G02B27/42

CPC分类号： G02B27/4266 ,  G02B27/0037 ,  G02B27/0087 ,  G02B27/0927 ,  G02B27/0944

摘要： A method of performing coherent transformations of optical fields includes forming a far field distribution of the input optical field. A fraction of the formed far field is diffracted by producing localized discontinuities within said far field. A Fraunhofer diffraction pattern of the diffracted optical field is formed. The Fraunhofer diffraction pattern is modified by producing localized optical path differences within the Fraunhofer diffraction pattern. The transformed output optical field is produced in the far field with respect to the modified Fraunhofer diffraction pattern.

公开(公告)号：US20170269297A1

公开(公告)日：2017-09-21

申请号：US15465466

申请日：2017-03-21

申请人： The Regents of the University of Colorado, a body corporate

发明人： Milos A. Popovic

IPC分类号： G02B6/124 ,  G02B27/42 ,  G02B6/122 ,  H01L27/12

CPC分类号： G02B6/124 ,  G02B6/1228 ,  G02B6/305 ,  G02B6/34 ,  G02B27/4266 ,  H01L27/1203

摘要： A grating coupler couples a waveguide to a beam and is formed of patterned shapes in a first and second layer of planar material, the shapes embedded in background material, the layers separated by less than one wavelength. The shapes are organized as a plurality of adjacent unit cells arranged along a direction of propagation of light with each unit cell including a shape of the first material and a shape of the second material, each unit cell having design parameters including a period, a width wb of the shape of first planar material, a width wt of the shape of second planar material, and an offset between the shapes. The coupler has a directivity ratio D is at least 10 dB between “up” and “down” radiation; and unit cells differ in at least one parameter selected from period, wb, wt, and offset to provide a predetermined beam shape.