公开(公告)号：WO1990002963A1

公开(公告)日：1990-03-22

申请号：PCT/US1989003810

申请日：1989-09-01

Applicant: JOHNSON, Kenneth, C.

IPC: G02B05/18

CPC classification number: G02B5/1895 ,  G02B5/1876 ,  G02B27/0025 ,  G02B27/0037 ,  G02B27/4211 ,  G02B27/4288

Abstract: A transmission grating (5) is used to reduce chromatic aberration in an optical system, wherein the system's chromatic dispersion is offset and substantially canceled by the grating's diffraction-induced dispersion. The grating (5) comprises a Fresnel-type pattern of microscopic facets (4) molded directly into one of the system's refractive optical surface (3). The facets (4) would typically have a profile height of around 4.10-5 inch and a profile width of at least 10-3 inch. In its primary intended application, the invention would function to improve the optical performance of a Fresnel lens used to concentrate direct sunlight into a piped daylight illumination system. For this application, about a ten-fold reduction in chromatic dispersion would be attained with only about a 2 % loss in optical efficiency.

公开(公告)号：WO1998025167A1

公开(公告)日：1998-06-11

申请号：PCT/JP1997004419

申请日：1997-12-03

Applicant: KUREHA KAGAKU KOGYO KABUSHIKI KAISHA ,  SHOUJI, Masuhiro ,  ICHIKAWA, Yukio ,  KATONO, Hiroki ,  OGIHARA, Takeo

Inventor： KUREHA KAGAKU KOGYO KABUSHIKI KAISHA

IPC: G02B05/18

CPC classification number: G02B5/1857 ,  G02B5/1871 ,  G02B27/46

Abstract: A phase grating which has a trapezoidal waveform cross section on its grating face side, has a trapezoid factor (B/A) of the trapezoidal waveform, is 0.006

Abstract translation: 在其光栅面侧具有梯形波形截面的相位光栅具有梯形波形的梯形因子（B / A）为0.006

公开(公告)号：WO1995030163A1

公开(公告)日：1995-11-09

申请号：PCT/IB1995000297

申请日：1995-04-25

Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  OPHEY, Willem, Gerard ,  BAALBERGEN, Johannes, Jacobus ,  OOMEN, Johannes, Mathias ,  NUYENS, Petrus, Gerardus, Josephus, Maria

IPC: G02B05/18

CPC classification number: G02B1/118 ,  G02B5/1809 ,  G11B7/1353

Abstract: An optical transmissive component (1) is described, which component has an entrance surface (4) and an exit surface (5) for optical radiation (20), in which one of the surfaces (4; 5) is provided with an anti-reflection grating (10; 15). By providing a second surface (5; 4) with a second anti-reflection grating and by ensuring that the grating strips (11) of the first grating (10) extend essentially perpendicularly to those (16) of the second grating (15) in corresponding areas of the first and the second surface (4; 5), it is prevented that the component is birefringent.

Abstract translation: 描述了一种光传输部件（1），该部件具有用于光辐射（20）的入射表面（4）和出射表面（5），其中，一个表面（4; 5） 反射光栅（10; 15）。 通过提供具有第二防反射光栅的第二表面（5; 4），并且通过确保第一光栅（10）的光栅条（11）基本垂直于第二光栅（15）的（16）延伸 第一和第二表面（4; 5）的对应区域，防止该部件是双折射的。

公开(公告)号：WO1995004948A1

公开(公告)日：1995-02-16

申请号：PCT/AU1994000441

申请日：1994-08-04

Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION ,  LEE, Robert, Arthur

Inventor： COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

IPC: G02B05/18

CPC classification number: G02B5/1842 ,  B42D25/324 ,  B42D25/328

Abstract: A diffractive device having a surface relief structure which, when illuminated by a light source, generates one or more diffraction images which are observable from particular ranges of viewing angles around the device, wherein at least part of the surface relief structure (1) is arranged in a series of tracks (2), each track (4, 5) having a diffracting surface (3) which generates a component of a diffraction image, such that at least one of the diffraction images generated by the diffractive device is formed from image components generated by a plurality of the tracks.

Abstract translation: 具有表面浮雕结构的衍射装置，当由光源照射时，衍射装置产生一个或多个衍射图像，该衍射图像可以从装置周围的特定视角范围观察到，其中至少部分表面浮雕结构（1）布置 在一系列轨道（2）中，每个轨道（4,5）具有产生衍射图像的分量的衍射表面（3），使得由衍射装置产生的至少一个衍射图像由图像形成 由多个轨道产生的分量。

公开(公告)号：WO1994028444A1

公开(公告)日：1994-12-08

申请号：PCT/AU1994000279

申请日：1994-05-25

Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION ,  LEE, Robert, Arthur

Inventor： COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

IPC: G02B05/18

CPC classification number: G02B5/1842 ,  B42D25/328 ,  G03H1/0011 ,  G03H1/0891 ,  G03H1/265 ,  G03H1/30 ,  G03H2001/0497 ,  G03H2001/303 ,  G03H2230/10

Abstract: A pixellated diffractive device includes a multiplicity of pixels (12, 22) in turn divided into multiple sub-pixels (13, 23). The device is related to one or more pixellated diffraction surface structures which when illuminated generate respective corresponding optically variable images. The sub-pixels (13, 23) of each pixel of the diffractive device include diffractive elements (13a, 23a) arranged in one or more groups, the diffractive elements of each group matching diffractive elements of a corresponding single pixel of the respective pixellated diffraction surface structures. In each pixel of the device the diffractive elements (13a, 23a) of the or each said group are intermixed with other sub-pixels and cooperatively contribute a single element of the corresponding optically variable image which is generated on illumination of the diffractive.

Abstract translation: 像素化衍射装置包括多个像素（12,22），其又被分成多个子像素（13,23）。 该器件与一个或多个像素化衍射表面结构相关，当被照射时产生相应的对应光学可变图像。 衍射装置的每个像素的子像素（13,23）包括以一个或多个组排列的衍射元件（13a，23a），各组的衍射元件与各个像素化衍射的相应单个像素的衍射元件相匹配 表面结构。 在器件的每个像素中，每个所述组或每个所述组的衍射元件（13a，23a）与其他子像素混合，并且协同地贡献在衍射照明时产生的对应光学可变图像的单个元件。

公开(公告)号：WO1994020868A1

公开(公告)日：1994-09-15

申请号：PCT/GB1994000447

申请日：1994-03-08

Applicant: THE SECRETARY OF STATE FOR DEFENCE ,  SUTTON, Philip ,  MAITLAND, Arthur ,  FINDLAY, Ewan, D

Inventor： THE SECRETARY OF STATE FOR DEFENCE

IPC: G02B05/18

CPC classification number: G02B6/02123 ,  G02B5/1847 ,  G02B6/124 ,  G03H1/02 ,  G03H3/00 ,  G03H2001/026 ,  G03H2001/0264 ,  G03H2260/50 ,  Y10S359/901

Abstract: A method for manufacturing optical components having a periodic or quasi-periodic structure such as diffraction gratings, volume holograms or distributed feedback mirrors in optical fibres. An optical medium is subjected to acoustic waves which induce periodic or quasi-periodic changes in the optical properties of the medium, the changes being at least partially retained on removal of the waves. The changes may result from stress associated with the antinodes of an acoustic standing wave, alternatively the stress distribution associated with a travelling acoustic wave in an electro-viscous liquid may be semi-permanently retained by the solidification of the material resulting from the application of an electric field.

Abstract translation: 一种用于制造具有周期性或准周期性结构的光学部件的方法，例如光纤中的衍射光栅，体积全息图或分布式反馈镜。 光介质经受声波，其引起介质的光学性质的周期性或准周期性变化，所述变化在去除波时至少部分保持。 这种变化可能是由与声波驻波的波腹相关的应力引起的，或者，电粘稠液体中与行波声波相关的应力分布可以通过施加材料而产生的材料的固化而被半永久地保持 电场。

公开(公告)号：WO1993022694A1

公开(公告)日：1993-11-11

申请号：PCT/US1993003939

申请日：1993-04-28

Applicant: LELAND STANFORD JUNIOR UNIVERSITY

Inventor： LELAND STANFORD JUNIOR UNIVERSITY ,  BLOOM, David, M. ,  SANDEJAS, Francisco, S., A. ,  SOLGAARD, Olav

IPC: G02B05/18

CPC classification number: B81B3/001 ,  G02B5/1828 ,  G02B26/0808

Abstract: A modulator (10) for modulating incident rays of light, the modulator having several equally spaced beam elements (18), each having a light reflective planar surface. The beam elements are arranged and supported (12) parallel to each other, with their reflective surfaces parallel. During operation, the elements remain parallel, but the modulator moves the beams so that the perpendicular spacing of their reflective surfaces changes between two configurations. In both configurations, the spacing equals m/4 times the wavelength of incident light. In the first configuration, m equals an even whole number or zero, and the modulator acts to reflect the incident rays of light as a plane mirror. In the second configuration, m equals an odd number and the modulator diffracts the incident rays as they are reflected.

Abstract translation: 一种用于调制入射光线的调制器（10），该调制器具有几个等间隔的光束元件（18），每个光束元件具有光反射平面。 梁元件被布置和支撑（12）彼此平行，其反射表面平行。 在操作期间，元件保持平行，但是调制器移动光束，使得它们的反射表面的垂直间隔在两个配置之间变化。 在两种配置中，间距等于入射光波长的m / 4倍。 在第一配置中，m等于偶数或零，并且调制器用于将入射的光线反射为平面镜。 在第二配置中，m等于奇数，并且调制器在入射光线被反射时衍射。

公开(公告)号：WO1993018419A1

公开(公告)日：1993-09-16

申请号：PCT/AU1993000102

申请日：1993-03-12

Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ... ,  LEE, Robert, Arthur

Inventor： COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ...

IPC: G02B05/18

CPC classification number: B42D25/328 ,  B42D25/00 ,  G02B5/1842 ,  G06K19/16

Abstract: A pixellated diffraction grating in which each pixel of the grating is an individual optical diffraction grating and the pixellated diffraction grating when illumitated generates an optically variable image. The pixels are arrayed in a multiplicity of groups of pixels in each of which the pixels are arranged according to a predetermined rule for the pixellated diffraction grating, whereby to produce a visually observable effect in the optically variable image generated when the pixellated diffraction grating is illuminated.

Abstract translation: 像素化衍射光栅，其中光栅的每个像素是单独的光学衍射光栅，并且当闪烁时像素化衍射光栅产生光学可变图像。 像素被排列成多个像素组，每个像素组中的像素根据用于像素化衍射光栅的预定规则被排列，从而在像素化衍射光栅被照亮时产生的光学可变图像中产生视觉上可观察到的效果 。

公开(公告)号：WO1991020005A1

公开(公告)日：1991-12-26

申请号：PCT/US1991004080

申请日：1991-06-10

Applicant: HOLO-OR LTD. ,  COHERENT, INC.

Inventor： HOLO-OR LTD. ,  COHERENT, INC. ,  KEDMI, Joseph ,  GROSSINGER, Israel

IPC: G02B05/18

CPC classification number: G02B5/1876 ,  Y10S359/90

Abstract: There is disclosed a diffractive optical element (11) and a method to produce same wherein the element comprises a base (13) and at least one phase zone (14) comprising an arbitrary multiplicity M of steps (22) of generally identical step height, wherein M is not a power of 2. The method includes the steps of defining a basic depth unit equivalent to a zone height divided by M, defining a depth sequence of N depths wherein N is the smallest integer greater than log2M such that each of the M steps can be produced by at least one linear combination of the N depths, defining N masks wherein each mask enables the optical element to be processed to one of the N depths and wherein for each mask, the steps to be processed are those which have the one of the N depths in its linear combination and serially utilizing each of the N masks for processing of the optical element.

公开(公告)号：WO1991012543A1

公开(公告)日：1991-08-22

申请号：PCT/US1991000947

申请日：1991-02-11

Applicant: HOLO-OR LTD. ,  COHERENT INC.

Inventor： HOLO-OR LTD. ,  COHERENT INC. ,  GROSSINGER, Israel ,  KEDMI, Yossi

IPC: G02B05/18

CPC classification number: G02B5/1876

Abstract: A diffractive optical element (11) and a method to produce same is disclosed. The optical element (11) comprises a base (13) and at least first and second phase zones (14) wherein the first phase zone (14) comprises a first multiplicity of steps (22) and the second phase zone comprises a second multiplicity of steps (22) and wherein a distance from an ith step of said first phase zone (14) to said base (13) is different than a distance of an ith step of said second phase (14) zone to said base (13), for at least one value of i. The method to produce the diffractive optical element (11) of the present invention includes the step of defining a collection of masks for creating stepped phase zones (14) wherein at least one of the collection of masks completely masks out at least one step (22) of at least one phase zone (14) such that the at least one step (22) of the at least one phase zone (14) will not be etched.

Abstract translation: 公开了衍射光学元件（11）及其制造方法。 光学元件（11）包括基座（13）和至少第一和第二相位区域（14），其中第一相位区域（14）包括第一多个台阶（22），第二相位区域包括第二多个 步骤（22），并且其中从所述第一相区（14）的第i步到所述基（13）的距离不同于所述第二相（14）区的第i步与所述基（13）的距离， 对于i的至少一个值。 制造本发明的衍射光学元件（11）的方法包括定义用于产生阶梯相区（14）的掩模的集合的步骤，其中至少一个掩模集合完全掩蔽出至少一个步骤（22） ）至少一个相区（14），使得至少一个相区（14）的至少一个台阶（22）不被蚀刻。