公开(公告)号：US12086717B2

公开(公告)日：2024-09-10

申请号：US18316474

申请日：2023-05-12

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Aydogan Ozcan ,  Yair Rivenson ,  Xing Lin ,  Deniz Mengu ,  Yi Luo

IPC分类号： G06N3/082 ,  G02B5/18 ,  G02B27/42 ,  G06F18/214 ,  G06F18/2431 ,  G06N3/04 ,  G06N3/08 ,  G06V10/94

CPC分类号： G06N3/082 ,  G02B5/1866 ,  G02B27/4205 ,  G02B27/4277 ,  G06F18/214 ,  G06F18/2431 ,  G06N3/04 ,  G06N3/08 ,  G06V10/95

摘要： An all-optical Diffractive Deep Neural Network (D2NN) architecture learns to implement various functions or tasks after deep learning-based design of the passive diffractive or reflective substrate layers that work collectively to perform the desired function or task. This architecture was successfully confirmed experimentally by creating 3D-printed D2NNs that learned to implement handwritten classifications and lens function at the terahertz spectrum. This all-optical deep learning framework can perform, at the speed of light, various complex functions and tasks that computer-based neural networks can implement, and will find applications in all-optical image analysis, feature detection and object classification, also enabling new camera designs and optical components that can learn to perform unique tasks using D2NNs. In alternative embodiments, the all-optical D2NN is used as a front-end in conjunction with a trained, digital neural network back-end.

公开(公告)号：US20240159956A1

公开(公告)日：2024-05-16

申请号：US18394211

申请日：2023-12-22

申请人： Magic Leap, Inc.

发明人： Christophe Peroz ,  Chieh Chang ,  Sharad D. Bhagat ,  Victor Kai Liu ,  Roy Matthew Patterson ,  David Carl Jurbergs ,  Mohammadreza Khorasaninejad ,  Ling Li ,  Michael Nevin Miller ,  Charles Scott Carden

IPC分类号： F21V8/00 ,  B29D11/00 ,  G02B27/42

CPC分类号： G02B6/0088 ,  B29D11/00673 ,  G02B6/0016 ,  G02B6/0036 ,  G02B6/0076 ,  G02B27/4277 ,  G02B5/003

摘要： In some embodiments, a head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting. The spacers are disposed on one major surface of each of the waveguides and indentations are provided on an opposite major surface of each of the waveguides. The indentations are sized and positioned to align with the spacers, thereby forming a self-aligned stack of waveguides. Tops of the spacers may be provided with light scattering features, anti-reflective coatings, and/or light absorbing adhesive to prevent light leakage between the waveguides. As seen in a top-down view, the spacers may be elongated along the same axis as the diffractive optical elements. The waveguides may include structures (e.g., layers of light absorbing materials, rough surfaces, light out-coupling optical elements, and/or light trapping microstructures) along their edges to mitigate reflections and improve the display contrast.

公开(公告)号：US11694082B2

公开(公告)日：2023-07-04

申请号：US17843720

申请日：2022-06-17

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Aydogan Ozcan ,  Yair Rivenson ,  Xing Lin ,  Deniz Mengu ,  Yi Luo

IPC分类号： G06N3/08 ,  G06N3/082 ,  G02B5/18 ,  G02B27/42 ,  G06N3/04 ,  G06V10/94 ,  G06F18/214 ,  G06F18/2431

CPC分类号： G06N3/082 ,  G02B5/1866 ,  G02B27/4205 ,  G02B27/4277 ,  G06F18/214 ,  G06F18/2431 ,  G06N3/04 ,  G06N3/08 ,  G06V10/95

摘要： An all-optical Diffractive Deep Neural Network (D2NN) architecture learns to implement various functions or tasks after deep learning-based design of the passive diffractive or reflective substrate layers that work collectively to perform the desired function or task. This architecture was successfully confirmed experimentally by creating 3D-printed D2NNs that learned to implement handwritten classifications and lens function at the terahertz spectrum. This all-optical deep learning framework can perform, at the speed of light, various complex functions and tasks that computer-based neural networks can implement, and will find applications in all-optical image analysis, feature detection and object classification, also enabling new camera designs and optical components that can learn to perform unique tasks using D2NNs. In alternative embodiments, the all-optical D2NN is used as a front-end in conjunction with a trained, digital neural network back-end.

公开(公告)号：US20180120669A1

公开(公告)日：2018-05-03

申请号：US15799590

申请日：2017-10-31

申请人： DigiLens, Inc.

发明人： Milan Momcilo Popovich ,  Jonathan David Waldern

IPC分类号： G02F1/29 ,  G02F1/1334

CPC分类号： G02F1/292 ,  G02B6/0076 ,  G02B6/12002 ,  G02B26/0808 ,  G02B27/4277 ,  G02B2006/12107 ,  G02B2006/12138 ,  G02F1/13342 ,  G02F2201/307 ,  G02F2203/62 ,  G06F3/0421 ,  G06K9/0004 ,  H01L27/14618 ,  H01L27/14625 ,  H01L27/14678 ,  H01L2924/0002 ,  H01L2924/00

摘要： A contact image sensor comprises: a light source providing a collimated beam; a detector and a switchable grating array comprising first and second transparent substrates sandwiching an array of switchable grating elements with transparent electrodes applied to said substrates, said substrates together providing a total internal reflection light guide. A first transmission grating layer overlays said first substrate. A second transmission grating layer overlays said second substrate. A quarter wavelength retarder layer overlays said second transmission grating layer. A platen overlays said quarter wavelength retarder layer; a polarization-rotating reflecting layer overlaying said first transmission grating layer. An input coupler for directing light from said light source into said light guide and an output coupler for extracting light out of said light guide towards said detector are also provided.

公开(公告)号：US20170082786A1

公开(公告)日：2017-03-23

申请号：US15267830

申请日：2016-09-16

申请人： Robert Magnusson ,  Manoj Niraula ,  Yeong Hwan Ko ,  Kyu Jin Lee

发明人： Robert Magnusson ,  Manoj Niraula ,  Yeong Hwan Ko ,  Kyu Jin Lee

IPC分类号： G02B5/18 ,  G02B27/42

CPC分类号： G02B5/1861 ,  G02B5/1809 ,  G02B27/4277 ,  G02B27/4288

摘要： There is immense scientific interest in the properties of resonant thin films embroidered with periodic nanoscale features. This device class possesses considerable innovation potential. Accordingly, we report unpolarized broadband reflectors enabled by a serial arrangement of a pair of polarized subwavelength gratings. Optimized with numerical methods, the elemental gratings can be fabricated in various materials systems. Illustrative examples provided consist of a partially-etched crystalline-silicon films on a quartz substrate and amorphous silicon films on glass. The resulting reflectors exhibit extremely wide spectral reflection bands in one polarization. By arranging two such reflectors sequentially with orthogonal there results an unpolarized spectral band that exceeds those of the individual polarized bands. In the prototypes disclosed herein, there results zero-order reflectance exceeding 97% under unpolarized light incidence over a 500-nm-wide wavelength band. This wideband represents a ˜44% fractional band in the near infrared spectral band. The elemental polarization-sensitive reflectors based on one-dimensional resonant gratings have simple design, robust performance, and are straightforward to fabricate. Hence, this technology is a promising alternative to traditional multilayer thin-film reflectors especially at longer wavelengths of light where multilayer deposition may be infeasible or impractical

公开(公告)号：US20160161752A1

公开(公告)日：2016-06-09

申请号：US13833974

申请日：2013-03-15

申请人： Trumpf Laser GmbH + Co. KG

发明人： Viorel NEGOITA ,  Thilo VETHAKE ,  Alexander KILLI ,  Christoph TILLKORN ,  Stephan STROHMAIER ,  Steffen RIED ,  Yufeng LI ,  Haiyan AN ,  Tobias BARNOWSKI

IPC分类号： G02B27/10 ,  H01S3/13 ,  H01S3/23 ,  G02B27/42 ,  G02B27/28 ,  H01S3/00 ,  G02B27/30

CPC分类号： G02B27/1086 ,  G02B27/1006 ,  G02B27/1073 ,  G02B27/286 ,  G02B27/30 ,  G02B27/4244 ,  G02B27/4277 ,  H01S3/0071 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/2391 ,  H01S5/005 ,  H01S5/4012 ,  H01S5/405 ,  H01S5/4062 ,  H01S5/4087

摘要： A device for wavelength coupling of laser beams (2a, . . . 2n) with different wavelengths (λ1, . . . λn), comprising: at least one laser source for generating a plurality of laser beams (2a, . . . , 2n), and an overlapping device for spatial overlapping of the plurality of laser beams (2a, . . . , 2n) for forming an overlapped laser beam with a plurality of wavelengths (λ1 . . . λn). The device has a feedback device arranged between the laser source and the overlapping device for feeding a radiation proportion of the laser beams (2a, . . . , 2n) to be overlapped back to the laser source, the feedback device comprising a partially reflecting angle-dispersive optical element, in particular a partially reflecting diffraction grating. The overlapping device may, for example, be configured as a transmitting or reflecting diffraction grating whose optical properties are adapted to the optical properties of the partially reflecting diffraction grating to overlap the laser beams (2a, . . . , 2n) in an essentially dispersion-free manner.

摘要翻译： 用于波长耦合具有不同波长（λ1，...λn）的激光束（2a，...）的装置，包括：用于产生多个激光束（2a，...，2n）的至少一个激光源 ）和用于形成具有多个波长（λ1·λn）的重叠激光束的多个激光束（2a，...，2n）的空间重叠的重叠装置。 该装置具有布置在激光源和重叠装置之间的反馈装置，用于将要重叠的激光束（2a，...，2n）的辐射比例馈送到激光源，反馈装置包括部分反射角 - 分散光学元件，特别是部分反射的衍射光栅。 重叠装置可以例如被配置为透射或反射衍射光栅，其光学特性适用于部分反射的衍射光栅的光学性质以基本上分散的方式与激光束（2a，...，2n）重叠 - 自由的方式。

公开(公告)号：US09239467B2

公开(公告)日：2016-01-19

申请号：US13734980

申请日：2013-01-06

申请人： PRIMESENSE LTD.

发明人： Alexander Shpunt ,  Benny Pesach

IPC分类号： G02B27/44 ,  G02B27/42 ,  G02B5/18 ,  G01B11/25 ,  G02B27/00 ,  G02B27/09 ,  G03B35/00 ,  G02B27/10

CPC分类号： H04N13/271 ,  G01B11/25 ,  G02B5/1819 ,  G02B27/0037 ,  G02B27/0944 ,  G02B27/1086 ,  G02B27/42 ,  G02B27/4205 ,  G02B27/4244 ,  G02B27/425 ,  G02B27/4272 ,  G02B27/4277 ,  G03B35/00 ,  G06K9/2036 ,  G06T7/521 ,  H04N13/254

摘要： Optical apparatus includes first and second diffractive optical elements (DOEs) arranged in series to diffract an input beam of radiation. The first DOE is configured to apply to the input beam a pattern with a specified divergence angle, while the second DOE is configured to split the input beam into a matrix of output beams with a specified fan-out angle. The divergence and fan-out angles are chosen so as to project the radiation onto a region in space in multiple adjacent instances of the pattern.

公开(公告)号：US20150258835A1

公开(公告)日：2015-09-17

申请号：US14425183

申请日：2013-09-03

申请人： OVD Kinegram AG ,  Bundesdruckerei GmbH

发明人： Jorg Fischer ,  Olga Kulikovska ,  Andre Leopold ,  Sebastian Mader ,  Wayne Robert Tompkin ,  Harald Walter

IPC分类号： B42D25/29 ,  B32B37/12 ,  G02B5/18 ,  G02B27/09 ,  G02B27/42 ,  B32B37/14 ,  B42D25/328

CPC分类号： B42D25/29 ,  B32B37/12 ,  B32B37/144 ,  B32B2037/1253 ,  B32B2307/20 ,  B32B2307/422 ,  B32B2425/00 ,  B42D25/00 ,  B42D25/23 ,  B42D25/328 ,  B42D2035/36 ,  G02B5/1866 ,  G02B5/1876 ,  G02B5/1885 ,  G02B27/0944 ,  G02B27/4277

摘要： The invention relates to a security element (2), in particular in the form of a multi-layer flexible film body, with a top side facing an observer and a back side facing away from the observer, as well as a method for the production thereof. The security element (2) has one or more light-emitting elements arranged in a first area (30) of the security element which radiate light when activated and in particular are formed in each case of a self-luminous, electrically operated, display element. The security element (2) has, in the first area (30), one or more transmissive diffraction structures. The one or more transmissive diffraction structures are arranged such that at least a part of the light radiated by the activated one or more light-emitting elements transmits through at least one partial area of the transmissive diffraction structures.

摘要翻译： 本发明涉及一种安全元件（2），特别是多层柔性膜体的形式，具有面向观察者的顶面和背离观察者的背面，以及一种生产方法 其中。 安全元件（2）具有布置在安全元件的第一区域（30）中的一个或多个发光元件，其在被激活时辐射光，并且特别地在每个情况下形成自发光，电操作的显示元件 。 安全元件（2）在第一区域（30）中具有一个或多个透射衍射结构。 一个或多个透射衍射结构被布置成使得被激活的一个或多个发光元件辐射的光的至少一部分透射透射透射衍射结构的至少一个部分区域。

公开(公告)号：US20130120841A1

公开(公告)日：2013-05-16

申请号：US13734980

申请日：2013-01-06

申请人： PRIMESENSE LTD.

发明人： Alexander Shpunt ,  Benny Pesach

IPC分类号： G02B27/42

CPC分类号： H04N13/271 ,  G01B11/25 ,  G02B5/1819 ,  G02B27/0037 ,  G02B27/0944 ,  G02B27/1086 ,  G02B27/42 ,  G02B27/4205 ,  G02B27/4244 ,  G02B27/425 ,  G02B27/4272 ,  G02B27/4277 ,  G03B35/00 ,  G06K9/2036 ,  G06T7/521 ,  H04N13/254

摘要： Optical apparatus includes first and second diffractive optical elements (DOEs) arranged in series to diffract an input beam of radiation. The first DOE is configured to apply to the input beam a pattern with a specified divergence angle, while the second DOE is configured to split the input beam into a matrix of output beams with a specified fan-out angle. The divergence and fan-out angles are chosen so as to project the radiation onto a region in space in multiple adjacent instances of the pattern.

公开(公告)号：US08240904B2

公开(公告)日：2012-08-14

申请号：US12725892

申请日：2010-03-17

申请人： Kuo-Jui Huang ,  Zhi-Ting Ye

发明人： Kuo-Jui Huang ,  Zhi-Ting Ye

IPC分类号： F21V7/04

CPC分类号： G02B27/42 ,  G02B5/0294 ,  G02B5/1814 ,  G02B5/1842 ,  G02B5/1866 ,  G02B6/0038 ,  G02B27/4244 ,  G02B27/425 ,  G02B27/4277 ,  G02F1/133606 ,  G02F2001/133607

摘要： A display including a display panel and a backlight module adjacent to the display panel is provided. The backlight module includes a light source emitting a light beam and at least one light diffraction member. The light diffraction member includes a first surface, a second surface, an azimuth convergence structure and a light diffraction structure. The second surface is opposite the first surface, and the light beam enters the light diffraction member through the second surface and leaves the light diffraction member from the first surface. The azimuth convergence structure is disposed on the second surface for converging the azimuth of the light beam incident thereon. The light diffraction structure is disposed on the first surface for adjusting the emergence angle of the light beam.

摘要翻译： 提供了包括显示面板和与显示面板相邻的背光模块的显示器。 背光模块包括发射光束的光源和至少一个光衍射部件。 光衍射构件包括第一表面，第二表面，方位收敛结构和光衍射结构。 第二表面与第一表面相对，并且光束通过第二表面进入光衍射元件，并从第一表面离开光衍射元件。 方位会聚结构设置在第二表面上，用于会聚入射在其上的光束的方位角。 光衍射结构设置在第一表面上用于调节光束的出射角。