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公开(公告)号：US20230367121A1
公开(公告)日：2023-11-16
申请号：US17912924
申请日：2021-06-17
Applicant: HITACHI-LG DATA STORAGE, INC.
Inventor： Daisuke TOMITA , Hiroyuki MINEMURA , Yumiko ANZAI , Hideo SUENAGA , Yukinobu TADA
IPC: G02B27/01
CPC classification number: G02B27/0172
Abstract: An image display element includes an incident diffraction grating which diffracts incident light, and an outgoing diffraction grating from which light that has propagated through the light guide plate after being diffracted by the incident diffraction grating is emitted, the incident diffraction grating and the outgoing diffraction grating being each formed by a pattern of concave-convex formed on a surface of the light guide plate, and the image display element being obtained by joining the light guide plate and a cover glass protecting the pattern of concave-convex or two or more light guide plates with an air layer therebetween by a holding member, and being configured such that the light guide plate and the cover glass are formed by a plastic material, and the holding member has an air vent through which air in the air layer and outside air communicate.
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公开(公告)号：US20170059300A1
公开(公告)日：2017-03-02
申请号：US15208686
申请日：2016-07-13
Applicant: Hitachi-LG Data Storage, Inc.
Inventor： Kentaro OSAWA , Hiroyuki MINEMURA , Yumiko ANZAI
IPC: G01B9/02
CPC classification number: G01B9/02091
Abstract: Provided is an optical measuring device that can realize a wide measurement region without an increase in the measurement time or a reduction in the measurement region while avoiding damage to a measurement target due to excessive light exposure, using a simple configuration. The device includes a light source, an optical splitting unit configured to split a light beam emitted from the light source into a signal beam and a reference beam, an objective lens configured to focus the signal beam and irradiate a measurement target with the signal beam, a scanning unit configured to move the focus position of the signal beam, an optical element having lower transmissivity in its peripheral portion than in its central portion, interference optics configured to combine the reference beam with the signal beam reflected or scattered by the measurement target, thereby generating interference beams, and photodetectors configured to detect the respective interference beams.
Abstract translation: 提供了一种光学测量装置，其可以使用简单的配置在不增加测量时间的情况下实现宽的测量区域，或者减少测量区域，同时避免由于过度的曝光而导致的测量目标的损坏。 所述装置包括光源，光分离单元，被配置为将从所述光源发射的光束分解为信号光束和参考光束;物镜，被配置为聚焦所述信号光束并用所述信号光束照射测量对象; 扫描单元，被配置为移动信号光束的聚焦位置，在其周边部分中的透射率低于其中心部分的光学元件，被配置为将参考光束与由测量对象反射或散射的信号光束组合的干涉光学元件， 从而产生干涉光束，以及被配置为检测各个干涉光束的光电检测器。
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公开(公告)号：US20220206207A1
公开(公告)日：2022-06-30
申请号：US17603353
申请日：2020-02-13
Applicant: Hitachi-LG Data Storage, Inc.
Inventor： Hiroyuki MINEMURA
Abstract: The light-guide plate includes a substrate, an incidence diffraction grating that diffracts incident light, and an emission diffraction grating that emits light from the substrate, the light being diffracted by the incidence diffraction grating. The emission diffraction grating is formed of a recessed/projected pattern formed on a substrate surface, the recessed/projected pattern includes a first group of parallel straight lines and a second group of parallel straight lines intersecting the first group of parallel straight lines, and a pitch of the first group of parallel straight lines is equal to a pitch of the second group of parallel straight lines. A relationship between the pitch P of the first group of parallel straight lines and the second group of parallel straight lines and a pattern width W of the recessed/projected pattern is defined as W/P, which is 0.15 or more and 0.85 or less.
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Patent Agency Ranking
公开(公告)号：US20170160185A1
公开(公告)日：2017-06-08
申请号：US15351556
申请日：2016-11-15
Applicant: Hitachi-LG Data Storage, Inc.
Inventor： Hiroyuki MINEMURA , Kentaro OSAWA , Yumiko ANZAI
CPC classification number: G01N15/14 , G01B9/02041 , G01B9/02081 , G01B9/02091 , G01B2290/45 , G01B2290/70 , G01N15/1434 , G01N15/1475 , G01N2015/1006 , G01N2015/1445 , G01N2015/1493
Abstract: An objective of the present invention is to provide a technique for reducing measurement errors when measuring specimen using light. An aspect of an optical measurement method according to the present invention: acquires relationship data that describes a relationship between an intensity of reflection light when irradiating light onto a specimen and a size of the specimen; and acquires the size of the specimen using the relationship data and the intensity of the reflection light. Another aspect of an optical measurement method according to the present invention subtracts a component due to an inclination of a vessel of a specimen from a detection signal representing an intensity of reflection light when irradiating light onto the specimen, thereby correcting the inclination of the vessel.
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公开(公告)号：US20230400691A1
公开(公告)日：2023-12-14
申请号：US18033386
申请日：2021-11-17
Applicant: Hitachi-LG Data Storage, Inc.
Inventor： Hiroyuki MINEMURA
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B2027/0118
Abstract: A light guiding plate comprising: a substrate; an incidence diffraction grating for diffracting incident light; and an emission diffraction grating for emitting, from the substrate, light diffracted by the incidence diffraction grating. The emission diffraction grating has a mesh-like grating pattern formed on the substrate. The mesh-like grating pattern is formed from a first parallel straight line group and a second parallel straight line group intersecting the first parallel straight line group. The pitch of the first parallel straight line group and the pitch of the second parallel straight line group are equal. Between the incidence diffraction grating and the mesh-like grating pattern, a line region is provided that consists only of the first parallel straight line group or the second parallel straight line group.
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公开(公告)号：US20230028757A1
公开(公告)日：2023-01-26
申请号：US17785102
申请日：2020-10-08
Applicant: Hitachi-LG Data Storage, Inc.
Inventor： Hiroyuki MINEMURA , Yumiko ANZAI
Abstract: To improve brightness of image information visually recognized by a user while using plastic for a light guide plate. An image display element includes: a substrate made of resin; an incident diffraction grating that diffracts incident light; and an exit diffraction grating that emits the light, the incident diffraction grating being formed on a first surface of the substrate, the exit diffraction grating being formed on a second surface on a side opposite to the first surface of the substrate, and the exit diffraction grating being formed on one surface.
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公开(公告)号：US20230010994A1
公开(公告)日：2023-01-12
申请号：US17782692
申请日：2020-10-08
Applicant: HITACHI-LG DATA STORAGE, INC.
Inventor： Hiroyuki MINEMURA , Yumiko ANZAI
Abstract: To improve luminance of image information visually recognized by a user while using plastic for a light guide plate. An image display element includes: a plastic substrate; an incident diffraction grating integrally formed on a surface of the plastic substrate and configured to diffract incident video light; an emission diffraction grating integrally formed on a surface of the plastic substrate and configured to emit the video light; and a coating layer formed on the emission diffraction grating and having a thickness of 10 nm or more and 1000 nm or less and a refractive index of 1.64 or more and 2.42 or less.
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公开(公告)号：US20200150430A1
公开(公告)日：2020-05-14
申请号：US16575542
申请日：2019-09-19
Applicant: Hitachi-LG Data Storage, Inc.
Inventor： Hiroyuki MINEMURA , Yumiko ANZAI
Abstract: To improve brightness of an image to be perceived by a user and enhance visibility there is provided a light guide plate including an incident diffraction grating which diffracts incident imaging light, an exit diffraction grating through which the imaging light goes out, and an intermediate diffraction grating existing in optical paths from the incident diffraction grating to the exit diffraction grating. In this light guide plate, a periodic linear corrugated pattern is formed as the incident diffraction grating, and when an imaginary line is established that passes through an incident point of imaging light onto the incident diffraction grating and is parallel with a periodic direction of the corrugated pattern, the intermediate diffraction grating has a first region on one side of the imaginary line and a second region on another side of the imaginary line.
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