公开(公告)号：US11869560B2

公开(公告)日：2024-01-09

申请号：US17541223

申请日：2021-12-02

Applicant: Meta Platforms Technologies, LLC

Inventor： Hyunmin Song ,  Sanaz Alali ,  Yun-Han Lee ,  Zhisheng Yun

IPC: G11B7/1353 ,  G11B7/131 ,  G02B27/28

CPC classification number: G11B7/1353 ,  G02B27/283 ,  G11B7/131

Abstract: A system includes a polarization selective optical element configured to diffract a light reflected by an object into a plurality of signal lights. The system also includes at least one optical sensor configured to receive the signal lights and generate a plurality of tracking signals for tracking the object.

公开(公告)号：US11302359B2

公开(公告)日：2022-04-12

申请号：US17135201

申请日：2020-12-28

Applicant: Amethystum Storage Technology Co., Ltd.

Inventor： Mu Zheng ,  Tiewei Luo ,  Jun Tian ,  Dejiao Hu ,  Yicheng Liu

IPC: G11B7/00 ,  G11B7/0065 ,  G11B7/08 ,  G11B7/128 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1362

Abstract: The present invention relates to a holographic storage device and method for simultaneously recording and reading on two sides, and pertains to the technical field of optical holographic storage. The device and method disclosed in the present invention use a characteristic that orthogonal light would not interfere with each other and a Bragg selectivity characteristic for holographic storage, and use two optical heads to constitute two interference fields orthogonal in polarization directions on two sides of a same position of a holographic storage medium, so as to perform two-path simultaneous recording and reading on a hologram. The device and method provided in the present invention implement two-path parallel recording and reading of holographic storage, and combine shift multiplexing and circumferential rotation multiplexing, thereby improving the speed of an information data recording and reading process while increasing a capacity of the holographic storage.

公开(公告)号：US11244705B2

公开(公告)日：2022-02-08

申请号：US16287936

申请日：2019-02-27

Applicant: Neur Sciences LLC

Inventor： Charles Northrup ,  Jefferson Odhner ,  Richard Rarey

IPC: G11B7/0065 ,  G03H1/00 ,  G11B7/1353 ,  G03H1/26 ,  G03H1/02 ,  G11C13/04 ,  G11B7/1362 ,  G11B7/125 ,  G11B7/127 ,  G03H1/22

Abstract: A system includes a plurality of optical identifiers and a reader for the optical identifiers. Each optical identifier has an optical substrate and a volume hologram (e.g., with unique data, such as a code page) in the optical substrate. The reader for the optical identifiers includes an illumination source (e.g., a laser), and a camera. The illumination source is configured to direct light into a selected one of the optical identifiers that has been placed into the reader to produce an image of the associated volume holograms at the camera. The camera is configured to capture the image. The captured image may be stored in a digital format by the system.

公开(公告)号：US20180151194A1

公开(公告)日：2018-05-31

申请号：US15813614

申请日：2017-11-15

Applicant: SEIKO EPSON CORPORATION

Inventor： Toshiyuki NOGUCHI

IPC: G11B7/1353 ,  G02B27/00 ,  G11B7/1372 ,  G11B7/1392 ,  G02B27/01 ,  G02B27/42

CPC classification number: G11B7/1353 ,  G02B27/0043 ,  G02B27/0103 ,  G02B27/0172 ,  G02B27/4211 ,  G02B27/4216 ,  G02B27/4238 ,  G02B2027/011 ,  G02B2027/0116 ,  G02B2027/0178 ,  G11B7/1372 ,  G11B7/1392 ,  G11B2007/0003

Abstract: An image display device includes an image light generation unit configured to generate image light, a projection system optical unit configured to project the image light, a correction system optical unit configured to correct aberrations, a first diffraction element configured to deflect the image light incident on a first incident surface, and a second diffraction element configured to deflect the image light incident on a second incident surface. The projection system optical unit, the second diffraction element, the correction system optical unit, and the first diffraction element are arranged in this order in a direction of the image light emitted from the image light generation unit, and the image light deflected and dispersed into rays of respective wavelengths by the second diffraction element is focused by the first diffraction element.

公开(公告)号：US20160196849A1

公开(公告)日：2016-07-07

申请号：US14908472

申请日：2014-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Nakyeong KIM ,  Byounggyo AHN

IPC: G11B7/1353 ,  G11B7/1395 ,  G11B7/1365

CPC classification number: G11B7/1365 ,  G03H2210/22 ,  G03H2222/31 ,  G11B7/0037 ,  G11B7/0065 ,  G11B7/08564 ,  G11B7/135 ,  G11B7/1356 ,  G11B7/1362 ,  G11B7/1372 ,  G11B7/1378 ,  G11B2007/0009 ,  G11B2007/00656 ,  G11B2007/13727

Abstract: Provided is a holographic data storage system characterized by including: a first polarizing beam splitter (PBS), wherein at least either of a first lens module and a second lens module transmits P-polarized light and reflects S-polarized light; a relay lens collecting light passing through the first PBS; a mirror reflecting the light collected through the relay lens back to the relay lens; and a quarter wave plate located between a second PBS beam splitter and the relay lens, converting transmitted linearly polarized light into circularly polarized light, and converting the circularly polarized light into linearly polarized light. By reducing the volume of the relay lens, it is possible to decrease the size of the holographic data storage system, and by decreasing the number of lenses, it is possible to lower manufacturing costs.

Abstract translation: 提供一种全息数据存储系统，其特征在于包括：第一偏振分束器（PBS），其中第一透镜模块和第二透镜模块中的至少一个透射P偏振光并反射S偏振光; 收集穿过第一PBS的光的中继透镜; 将通过中继透镜收集的光反射回中继透镜的镜子; 以及位于第二PBS分光器和中继透镜之间的四分之一波片，将透射的线偏振光转换成圆偏振光，并将圆偏振光转换成线偏振光。 通过减小中继透镜的体积，可以减小全息数据存储系统的尺寸，并且通过减少透镜数量，可以降低制造成本。

公开(公告)号：US20160118076A1

公开(公告)日：2016-04-28

申请号：US14848683

申请日：2015-09-09

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Kazuyoshi YAMAZAKI

IPC: G11B7/1353 ,  G11B7/1395

CPC classification number: G11B7/1365 ,  G11B7/083 ,  G11B7/08564

Abstract: A hologram apparatus and hologram optical system includes: a light source which emits a light beam; a splitter which splits the light beam emitted from the light source into a first light beam and a second light beam; a first lens for exposing an optical information recording medium to convergent light of the first light beam; an optical path angle varying device which causes the second light beam to become incident at substantially the same position as the first light beam in the optical information recording medium and changes an angle of incidence of the second light beam incident on the optical information recording medium; and an optical path shifting element which shifts a position of a light beam incident on the optical information recording medium, according to an angle to the optical information recording medium of the light beam incident on the optical information recording medium.

Abstract translation: 全息装置和全息光学系统包括：发射光束的光源; 分离器，其将从所述光源发射的光束分成第一光束和第二光束; 第一透镜，用于将光学信息记录介质曝光到第一光束的会聚光; 光路角度改变装置，其使第二光束入射到与光信息记录介质中的第一光束大致相同的位置，并改变入射在光信息记录介质上的第二光束的入射角; 以及光路移动元件，其根据入射在光学信息记录介质上的光束的光学信息记录介质的角度偏移入射在光学信息记录介质上的光束的位置。

公开(公告)号：US09299383B2

公开(公告)日：2016-03-29

申请号：US13348797

申请日：2012-01-12

Applicant: Tetsuo Nishidate

Inventor： Tetsuo Nishidate

IPC: G11B7/12 ,  G11B7/135 ,  G11B7/085 ,  G11B7/08 ,  G11B7/22 ,  H04N5/225 ,  G11B7/1353

CPC classification number: G11B7/12 ,  G11B7/08 ,  G11B7/08582 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/22 ,  H04N5/2251

Abstract: An optical element holder comprises a placement face on which an optical element is placed, the placement face obtained using one face of a sheet of metal; a positioning wall used for positioning the optical element placed on the placement face, the positioning wall being a stepped portion obtained by folding of the sheet of metal; and a spring section, which is a portion obtained by further folding of part of the portion folded over in order to obtain the positioning wall.

Abstract translation: 光学元件保持器包括放置光学元件的放置面，使用金属片的一面获得的放置面; 定位壁，用于定位放置在放置面上的光学元件，定位壁是通过折叠金属片而获得的台阶部分; 以及弹簧部，其是通过进一步折叠部分折叠部分而获得的部分，以获得定位壁。

公开(公告)号：US20160055875A1

公开(公告)日：2016-02-25

申请号：US14781595

申请日：2013-04-05

Applicant: HITACHI CONSUMER ELECTRONICS CO., LTD.

Inventor： Kazuyoshi YAMAZAKI

IPC: G11B7/0065 ,  G11B7/1353 ,  G11B20/18 ,  G03H1/26

CPC classification number: G11B7/0065 ,  G03H1/265 ,  G03H2001/0491 ,  G03H2001/2244 ,  G11B7/0037 ,  G11B7/08564 ,  G11B7/094 ,  G11B7/1353 ,  G11B7/1356 ,  G11B20/18

Abstract: A hologram recording and reproducing device and an angular multiplexing recording and reproducing method capable of detecting an angular error signal for which, in a two-beam angle multiplexing method, high-speed reproducing can be achieved with a superior recovered signal. A branch element branches a light beam, emitted from a light source, into a signal light and a reference light. Angle-variable elements modify the incident angle of the reference light that is incident to the optical information recording medium. A spatial light modulator adds information to the signal light; and an objective lens radiates the signal light to the optical information recording medium. An imaging element detects diffracted light generated from a recording region when the reference light is radiated upon the optical information recording medium; a detection system detects at least two angular error signals for controlling the angle-variable elements; and switching is performed between the two angular error signals.

Abstract translation: 一种全息图记录和再现装置以及能够检测角度误差信号的角度多路复用记录和再现方法，其以双光束角度多路复用方式可以以优异的恢复信号实现高速再现。 分支元件将从光源发射的光束分散成信号光和参考光。 角度可变元件改变入射到光学信息记录介质的参考光的入射角。 空间光调制器将信息添加到信号光; 并且物镜将信号光辐射到光学信息记录介质。 当参考光被照射到光学信息记录介质上时，成像元件检测从记录区域产生的衍射光; 检测系统检测至少两个角度误差信号以控制角度可变元件; 并且在两个角度误差信号之间进行切换。

公开(公告)号：US20150043320A1

公开(公告)日：2015-02-12

申请号：US14340723

申请日：2014-07-25

Applicant: Funai Electric Co., Ltd.

Inventor： Mitsuyoshi SASABE ,  Mio KOGA ,  Mika HAMAOKA

IPC: G11B7/1395 ,  G11B7/095 ,  G11B7/1353 ,  G11B7/09

CPC classification number: G11B7/22 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1381 ,  G11B2007/0006

Abstract: An optical pickup is configured such that light split by a light-splitting element is received by light-receiving elements provided on a light-receiving surface of a light-receiving unit, has on the light-receiving surface of the light-receiving unit quartered light-receiving portions that detect position-adjustment light and configured by equal quartering so as to be arranged in two dimensions, and in which the position of the light-splitting element is adjusted based on the position-adjustment light received by each of the quartered light-receiving portions.

Abstract translation: 光拾取器被配置为使得由分光元件分离的光被设置在受光单元的光接收表面上的受光元件接收，所述光接收单元的光接收表面在所述光接收单元的光接收表面上 光接收部分，其检测位置调节光并通过相等的四分之一来配置为以二维布置，并且其中分光元件的位置基于由每个四分之一所接收的位置调节光来调节 光接收部分。

公开(公告)号：US08897106B2

公开(公告)日：2014-11-25

申请号：US13599473

申请日：2012-08-30

Applicant: Seong-su Park ,  Soo-han Park ,  Woo-chang Chun

Inventor： Seong-su Park ,  Soo-han Park ,  Woo-chang Chun

IPC: G11B7/135 ,  G11B7/1374 ,  G02B5/18 ,  G02B13/00 ,  G11B7/1381 ,  G11B7/1353 ,  G11B7/00

CPC classification number: G11B7/1381 ,  G02B5/1814 ,  G02B13/005 ,  G02B13/0055 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

Abstract: An objective lens for optical pickup and an optical pickup apparatus having the same are provided. The objective lens for optical pickup includes a light source side lens surface and a disc side lens surface. The light source side lens surface and the disc side lens surface each include an effective region disposed at a central region of the objective lens and a non-effective region disposed outside the effective region. An optical path changing element, disposed in the non-effective region of at least one of the light source side lens surface and the disc side lens surface, changes a path of light incident thereon.

Abstract translation: 提供了一种用于光学拾取器的物镜和具有该物镜的光学拾取装置。 用于光学拾取器的物镜包括光源侧透镜表面和盘侧透镜表面。 光源侧透镜表面和盘侧透镜表面各自包括设置在物镜的中心区域的有效区域和设置在有效区域外的非有效区域。 设置在光源侧透镜表面和盘侧透镜表面中的至少一个的非有效区域中的光路改变元件改变入射到其上的光的路径。