公开(公告)号：WO1987007034A1

公开(公告)日：1987-11-19

申请号：PCT/US1987001175

申请日：1987-05-18

Applicant: AMERICAN BANK NOTE HOLOGRAPHICS, INC.

Inventor： AMERICAN BANK NOTE HOLOGRAPHICS, INC. ,  HAINES, Kenneth, A. ,  WELLER, Robert, H.

IPC: G02B05/18

CPC classification number: G03H1/041 ,  G02B5/1842 ,  G03H1/0011 ,  G03H2001/0027 ,  G06K19/16 ,  G07D7/0032 ,  G07F7/086 ,  Y10S283/904 ,  Y10S359/90

Abstract: Holograms (85), including diffraction gratings, and methods of making them, that reconstruct an image (89) which changes as the hologram is tilted with respect to the viewer (87) and in a manner that images (89) reconstructed from copies made of the hologram (85) in monochromatic light do not have that motion. The hologram (85) is a valuable security device for authenticating documents or objects to which it is attached since it is extremely difficult to duplicate.

公开(公告)号：WO1998023979A1

公开(公告)日：1998-06-04

申请号：PCT/AU1997000800

申请日：1997-11-26

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

Inventor： COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

IPC: G02B05/18

CPC classification number: B44F1/10 ,  B42D25/29 ,  B42D25/324 ,  B42D25/328 ,  B42D2035/24 ,  G02B5/1842 ,  G02B5/32 ,  G03H1/30 ,  G06K19/16

Abstract: A colour image diffractive device has a surface relief structure which, when illuminated by a light source, generates a diffraction image observable at a range of viewing angles around the device. The observed diffraction image is composed of pixels of numerous different colours, with the hue and intensity of most pixels being similar to those of immediately adjacent pixels, so that the image has a substantially continuous smooth colour tone. Each combination of hue and intensity is generated by the combined diffractive effect of the physical characteristics of one or more regions of the surface relief structure. Brightness is modulated by phase cancellation method (shifting adjacent gratings) or by changing the effective area of gratings within a sub-pixel.

Abstract translation: 彩色图像衍射装置具有表面浮雕结构，当由光源照射时，产生在装置周围的视角范围内可观察到的衍射图像。 观察到的衍射图像由许多不同颜色的像素组成，其中大多数像素的色调和强度与紧邻的像素相似，使得图像具有基本连续的平滑色调。 色相和强度的每个组合通过表面浮雕结构的一个或多个区域的物理特性的组合衍射效应产生。 通过相位消除法（移相邻光栅）或通过改变子像素内的光栅的有效面积来调制亮度。

公开(公告)号：WO1997026569A2

公开(公告)日：1997-07-24

申请号：PCT/US1997000854

申请日：1997-01-17

Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

Inventor： THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ,  BLOOM, David, M. ,  HUIBERS, Andrew

IPC: G02B05/18

CPC classification number: B81B3/001 ,  B81C2201/115 ,  G02B5/1828 ,  G02B26/0808

Abstract: A multicolor optical image-generating device comprised of an array of grating light valves (GLVs) organized to form light-modulating pixel units for spatially modulating incident rays of light. The pixel units are comprised of three subpixel components each including a plurality of elongated, equally spaced apart reflective grating elements arranged parallel to each other with their light-reflective surfaces also parallel to each other. Each subpixel component includes means for supporting the grating elements in relation to one another, and means for moving alternate elements relative to the other elements and between a first configuration wherein the component acts to reflect incident rays of light as a plane mirror, and a second configuration wherein the component diffracts the incident rays of light as they are reflected from the grating elements. The three subpixel components of each pixel unit are designed such that when red, green and blue light sources are trained on the array, colored light diffracted by particular subpixel components operating in the second configuration will be directed through a viewing aperture, and light simply reflected from particular subpixel components operating in the first configuration will not be directed through the viewing aperture.

Abstract translation: 一种多色光学图像产生装置，包括被组织以形成用于空间调制入射光线的光调制像素单元的光栅光阀阵列（GLV）。 像素单元由三个子像素部件组成，每个子像素部件包括彼此平行布置的多个细长的等间隔开的反射光栅元件，其光反射表面也彼此平行。 每个子像素部件包括用于相对于彼此支撑光栅元件的装置，以及用于相对于其它元件移动交替元件的装置，以及用于将入射光线反射为平面镜的第一配置之间的第一配置，以及第二 配置，其中所述分量在入射光线从所述光栅元件反射时衍射。 每个像素单元的三个子像素分量被设计成使得当在阵列上训练红色，绿色和蓝色光源时，由在第二配置中操作的特定子像素分量衍射的彩色光将被引导通过观察孔，并且光简单地反射 来自在第一配置中操作的特定子像素组件将不被引导通过观察孔。

公开(公告)号：WO1997014983A1

公开(公告)日：1997-04-24

申请号：PCT/JP1996003000

申请日：1996-10-16

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  WAKAMI, Toshinori ,  SHIGEMATSU, Masayuki ,  TERASAWA, Yoshiaki ,  INOUE, Akira ,  SHIGEHARA, Masakazu ,  IWASHIMA, Toru

Inventor： SUMITOMO ELECTRIC INDUSTRIES, LTD.

IPC: G02B05/18

CPC classification number: H01S3/0675 ,  G02B6/0218 ,  G02B6/0219 ,  G02B6/3845

Abstract: An optical fiber diffraction grating comprising an optical fiber (10) having a diameter of 125 mu m provided with diffraction grating extending along its optical axis, a coaxial silicone resin coating (14) of 300 mu m in outside diameter on the optical fiber (12), another coaxial coating (16) of 900 mu m in outside diameter of a liquid crystal polymer such as a polyester amide, and an outermost coating (18) of 1 mm in outside diameter made of a UV-cured color resin for identification, wherein the optical fiber (10) and the coating (14) have positive thermal expansion coefficients, whereas the liquid-crystal polymer coating (16) has a negative thermal expansion coefficient.

Abstract translation: 一种光纤衍射光栅，包括直径为125μm的光纤（10），其具有沿其光轴延伸的衍射光栅，在光纤（12）上具有外径为300μm的同轴硅树脂涂层（14） ），另外在液晶聚合物如聚酯酰胺的外径为900μm的另一同轴涂层（16）和外部直径为1mm的最外涂层（18），其由用于识别的紫外线固化的彩色树脂制成， 其中光纤（10）和涂层（14）具有正的热膨胀系数，而液晶聚合物涂层（16）具有负的热膨胀系数。

公开(公告)号：WO1996027810A1

公开(公告)日：1996-09-12

申请号：PCT/US1995002963

申请日：1995-03-07

Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD, JUNIOR UNIVERSITY

Inventor： THE BOARD OF TRUSTEES OF THE LELAND STANFORD, JUNIOR UNIVERSITY ,  BLOOM, David, M. ,  SANDEJAS, Francisco, S., A. ,  SOLGAARD, Olav ,  APTE, Raj, B.

IPC: G02B05/18

CPC classification number: B81B3/001 ,  B81C2201/115 ,  G02B5/1828 ,  G02B26/0808

Abstract: A modulator for modulating incident light, the modulator comprising a plurality of equally spaced elements (116), each including a light reflective planar surface. The elements are parallel to each other with their light reflective surfaces parallel to each other. The modulator includes means for moving the elements relative to one another between a first configuration wherein the modulator reflects the incident light as a plane mirror, and a second configuration wherein the modulator diffracts the incident rays of light as they are reflected. At least one of the facing surfaces (114) (110) of the elements and underlying substrate (108) is configured to reduce any tendency to stick as they are pulled together. The light reflective surfaces of the elements remain parallel to each other in both the first and the second configurations and the perperdicular spacing between the reflective surfaces of adjacent elements is equal to m/4 times the wavelength of the incident light, wherein m = an even whole number or zero when the elements are in the first configuration and m = an odd number when the elements are in the second configuration.

Abstract translation: 一种用于调制入射光的调制器，所述调制器包括多个等间隔的元件（116），每个元件包括光反射平面。 元件彼此平行，其光反射表面彼此平行。 调制器包括用于在第一配置之间相对于彼此移动元件的装置，其中调制器将入射光反射为平面镜，以及第二配置，其中调制器在入射的光线被反射时衍射。 元件和下面的衬底（108）的面向表面（114）（110）中的至少一个被配置成在被拉在一起时减少任何粘着的倾向。 元件的光反射表面在第一和第二构造中保持彼此平行，并且相邻元件的反射表面之间的周向间隔等于入射光的波长的m / 4倍，其中m =偶数 当元素处于第一配置时，整数或零，并且当元素处于第二配置时m =奇数。

公开(公告)号：WO1996017266A1

公开(公告)日：1996-06-06

申请号：PCT/US1995015557

申请日：1995-11-30

Applicant: HONEYWELL INC.

Inventor： HONEYWELL INC. ,  COX, J., Allen ,  WILKE, Robert, M.

IPC: G02B05/18

CPC classification number: C03C15/00 ,  B29C35/0888 ,  B29C59/02 ,  B29C2035/0827 ,  G02B5/1852 ,  G02B5/1857 ,  Y10T156/1041

Abstract: A method of multiple replication of a diffractive optical glass surface relief profiles into other glass-type substrates. For example, a malleable but hardenable layer formed on a glass substrate is embossed with a stamper having a reverse image of the optical glass surface relief profile, to result in a high quality copy of the original diffractive glass surface relief profile. The embossed layer is hardened and separated from the stamper. The hardened layer having the embossed surface relief profile is, for instance, etched down such that the surface relief profile is etched in to the surface of the glass substrate. The result of this method is a readily producible and very durable glass or like-material accurate replica, having high fidelity and being capable of providing high quality images, of another diffractive optical element.

Abstract translation: 将衍射光学玻璃表面凹凸轮廓多重复制到其它玻璃型基底中的方法。 例如，形成在玻璃基板上的可延展但可硬化的层被压印有具有光学玻璃表面浮雕轮廓的反向图像的压模，以得到原始衍射玻璃表面浮雕形状的高质量拷贝。 压花层被硬化并与压模分离。 例如，具有压花表面浮雕轮廓的硬化层被蚀刻，使得表面凹凸轮廓蚀刻到玻璃基底的表面。 该方法的结果是易于生产和非常耐用的玻璃或类似材料的精确复制品，具有高保真度并且能够提供另一种衍射光学元件的高质量图像。

公开(公告)号：WO1995025288A1

公开(公告)日：1995-09-21

申请号：PCT/AT1995000051

申请日：1995-03-17

Applicant: BIFOCON OPTICS FORSCHUNGS- UND ENTWICKLUNGSGMBH ,  FIALA, Werner

Inventor： BIFOCON OPTICS FORSCHUNGS- UND ENTWICKLUNGSGMBH

IPC: G02B05/18

CPC classification number: G02B5/1876 ,  G02B5/1895

Abstract: A zoned lens comprises at least two adjacent zones (16) formed such that the differences between the optical path lengths between an object point and a pixel of light beams extending through these two adjacent zones (16) of the lens (15) are at least equal to half the coherence length of the light used, preferably at least equal to the coherence length of the light used.

Abstract translation: 带透镜，其包括至少两个相邻区（16）被形成为使得在光路中的各个差的物点和穿过透镜的这两个相邻区（16）的光线的像点之间的长度（15）延伸，至少 等于所使用的光的相干长度的一半，优选地至少等于所使用的光的相干长度是。

公开(公告)号：WO1995022773A1

公开(公告)日：1995-08-24

申请号：PCT/US1995002141

申请日：1995-02-21

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  FARN, Michael ,  VELDKAMP, Wilfrid, B.

IPC: G02B05/18

CPC classification number: G02B27/1013 ,  G02B5/1871 ,  G02B5/1876 ,  G02B5/1885 ,  G02B5/203 ,  G02B27/1086 ,  G02B27/123 ,  G02F1/133621 ,  G02F2001/133623

Abstract: Optical apparatus for dispensing a visible light spectrum into primary color bands and directing each color band into a specific pixelated cell of a passive display. The apparatus includes an array of refractive microlenses arranged parallel to the plane of the passive display such as a liquid crystal display and a diffraction grating arranged parallel and in close proximity to the lens array. The microlenses focus visible light onto the display while the diffraction grating separates the visible light into primary color bands in different diffraction orders such that the colors are directed to and transmitted through the corresponding specific pixelated cells.

Abstract translation: 用于将可见光谱分配到原色带中并将每个色带引导到被动显示器的特定像素化单元中的光学装置。 该装置包括平行于无源显示器的平面布置的折射微透镜阵列，例如液晶显示器和平行并且靠近透镜阵列布置的衍射光栅。 微透镜将可见光聚焦到显示器上，而衍射光栅将可见光分成不同衍射级的主色带，使得颜色被引导并通过相应的特定像素化单元传输。

公开(公告)号：WO1993014424A1

公开(公告)日：1993-07-22

申请号：PCT/GB1993000043

申请日：1993-01-11

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  WOOD, David, Charles ,  CASSIDY, Stephen, Anthony ,  WILKINSON, Mark, Robert ,  MCKEE, Paul, Francis

Inventor： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC: G02B05/18

CPC classification number: G02B6/02085 ,  G02B6/02057 ,  G02B6/02066 ,  G02B6/124 ,  G02B2006/02166

Abstract: An optical grating includes a sequence of grating lines, the sequence being such that each grating line is centred on a position which is an integer multiple of a line spacing distance from a datum position on the grating, the sequence of grating lines is non-periodic and the sequence of grating lines is formed from N concatenated subsequences. Each subsequence comprising a series of one or more instances of a respective grating line pattern. Such an optical grating has a structure that is more amenable to calculation of the grating lines necessary to achieve a desired characteristic. A method of calculating and fabricating such a grating is also disclosed.

Abstract translation: 光栅包括一系列光栅线，该序列使得每个光栅线以位于与光栅上的基准位置的行距离的整数倍的位置为中心，光栅线序列是非周期性的 并且栅格线序列由N个连接的子序列形成。 每个子序列包括相应光栅线图案的一系列一个或多个实例。 这样的光栅具有更适合于实现所需特性所需的光栅线的计算的结构。 还公开了一种计算和制造这种光栅的方法。

公开(公告)号：WO1992009910A1

公开(公告)日：1992-06-11

申请号：PCT/US1991007206

申请日：1991-10-01

Applicant: POLAROID CORPORATION

Inventor： POLAROID CORPORATION ,  CLARK, Peter, P. ,  LONDONO, Carmina

IPC: G02B05/18

CPC classification number: G02B19/0057 ,  B41J2/475 ,  G02B19/0014 ,  G02B27/09 ,  G02B27/0927 ,  G02B27/0966 ,  G06K15/1204

Abstract: Source of laser radiation for a printer includes at least one diode array (300-330) and an optical system (400, 540, 550) which is telecentric in at least one azimuth for imaging the near field distribution from the laser diode array(s) (300-330) on a recording medium (470).