公开(公告)号：US20160131909A1

公开(公告)日：2016-05-12

申请号：US14936975

申请日：2015-11-10

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Toshiteru NAKAMURA ,  Satoshi OUCHI ,  Yoshiho SEO ,  Tomoto KAWAMURA ,  Yoshio OKAMOTO

IPC: G02B27/01 ,  G06F3/16 ,  G02B13/16 ,  F21V8/00 ,  G02B13/18

CPC classification number: G02B27/0172 ,  G02B6/0041 ,  G02B27/0994 ,  G02B2027/0118 ,  G02B2027/0138

Abstract: An image display apparatus which displays, as a virtual image, image in a visual field of a user, including an image generation section to generate image; an illumination section to illuminate light to the image generation section; and a projection section by which the image generated by the image generation section is projected, as a virtual image, into the visual field of the user, the projection section includes: a prism lens formed by integrating, by predetermined unit, a lens to generate the virtual image, with a prism provided thereon with a half mirror film which bends, in the direction of the pupil, a signal light from the image generation section; and aperture restriction unit which is provided on the incident surface of the prism lens, and which allows light in a predetermined area of the signal light from the image generation section to pass therethrough.

Abstract translation: 一种在用户的视野中显示图像作为虚像的图像显示装置，其包括用于生成图像的图像生成部分; 照明部，其向所述图像生成部照射光; 以及由图像生成部生成的图像作为虚拟图像投射到用户的视野中的投影部，投影部包括：通过以预定的单位将透镜积分以产生的棱镜透镜 虚拟图像，其上设有棱镜，半透镜膜在光瞳方向上弯曲来自图像生成部分的信号光; 以及孔径限制单元，其设置在棱镜透镜的入射表面上，并且允许来自图像生成部的信号光的预定区域中的光通过。

公开(公告)号：US20200233217A1

公开(公告)日：2020-07-23

申请号：US16571499

申请日：2019-09-16

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Takuma KUNO ,  Ryuji UKAI ,  Toshiteru NAKAMURA ,  Satoshi OUCHI

IPC: G02B27/01 ,  F21V8/00 ,  G02B27/00

Abstract: A light guide plate includes: first and second internal reflective surfaces that are approximately parallel and propagate incoming image light while totally reflecting the image light; a partially reflective surface array that has a plurality of partially reflective surfaces arranged in a direction of propagating image light, the partially reflective surfaces being inclined at a predetermined angle and partially reflecting the image light; and a uniforming element that uniforms intensity distribution of image light which is reflected by the partially reflective surface array to be projected from the light guide plate. As the uniforming element, the partially reflective surface array is divided into a plurality of segments along a direction of propagating image light, and the inter-surface spacing of the partially reflective surfaces or the reflectivity of the partially reflective surfaces is configured to vary from segment to segment.

公开(公告)号：US20170184894A1

公开(公告)日：2017-06-29

申请号：US15390822

申请日：2016-12-27

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Shingo HAYASHI ,  Satoshi OUCHI ,  Yoshiho SEO ,  Tomoto KAWAMURA ,  Seiji MURATA ,  Takahiro MATSUDA ,  Toshiteru NAKAMURA

IPC: G02F1/133 ,  G02F1/137 ,  G02F1/163 ,  H04N9/31

CPC classification number: G02F1/13318 ,  G02B26/02 ,  G02B27/0172 ,  G02B2027/0118 ,  G02F1/13471 ,  G02F1/137 ,  G02F1/15 ,  G02F1/163 ,  G02F1/172 ,  G02F2201/44 ,  H04N9/3155 ,  H04N9/3173

Abstract: There are provided a dimmer that can solve practical problems including burn-in and easily change a transmittance to external light and a video display device using the same. A dimmer includes a stack of two or more light control layers that change a transmittance to incident light by controlling an applied voltage in the incident direction of the incident light. A video display device includes a video generator that generates picture light; a video projector that projects the picture light as a virtual image in the field of view of a user; the dimmer disposed on the opposite side of the projecting side of the video projector to the user for adjusting the light quantity of external light to be entered to a user's eye through the video projector; and a light controller that controls the dimmer suitable for the luminosity of external light detected at an external light detector.

公开(公告)号：US20150153633A1

公开(公告)日：2015-06-04

申请号：US14556367

申请日：2014-12-01

Applicant: HITACHI-LG DATA STORAGE, INC.

Inventor： Toshiteru NAKAMURA ,  Satoshi OUCHI

IPC: G03B21/00 ,  H04N5/74 ,  G03B21/20

CPC classification number: G03B21/008 ,  G03B21/2013 ,  G03B21/2033 ,  G03B21/208 ,  G03B21/28 ,  H04N5/7458 ,  H04N9/315

Abstract: In an optical unit having a reflective picture display device for displaying pictures by projecting light, the picture display device has a first state in which focused light is reflected in an optical axis equivalent direction of an image to be displayed and a second state in which focused light is reflected so as to have a component in a vertical equivalent direction of an image to be projected, a plane including an entire optical axis of light reflected in the second state differs from a plane formed by the optical axis of light incident on the picture display device and the optical axis of light reflected by the picture display deice in the first state, and the opening size of the opening of an illumination lens in a horizontal equivalent direction of the image to be projected is larger than in the vertical equivalent direction.

Abstract translation: 在具有用于通过投射光来显示图像的反射图像显示装置的光学单元中，图像显示装置具有第一状态，其中聚焦光在要显示的图像的光轴当量方向上反射，并且第二状态被聚焦 光被反射成具有要投射的图像的垂直等效方向的分量，包括在第二状态中反射的光的整个光轴的平面与由入射在图像上的光的光轴形成的平面不同 显示装置和在第一状态下由图像显示器反射的光的光轴，并且照射透镜在待投影图像的水平当量方向上的开口的开口尺寸大于垂直方向上的开口尺寸。

公开(公告)号：US20210041699A1

公开(公告)日：2021-02-11

申请号：US16652690

申请日：2018-09-11

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Ryuji UKAI ,  Tomoto KAWAMURA ,  Satoshi OUCHI ,  Yoshiho SEO ,  Seiji MURATA

IPC: G02B27/01 ,  H04N9/31

Abstract: Both uniformity of brightness and uniformity of color of the outside world are seen via a waveguide. A video image is reflected by a partial reflection surface inside the waveguide that includes an incident surface on which video image light is incident, first and second internal reflection surfaces that propagate the video image light incident from the incident surface while totally reflecting the video image light, and are substantially parallel to each other. A plurality of partial reflection surfaces that reflect a part of the video image light propagating by being totally reflected by the first and second internal reflection surfaces, output the part of the video image light as output light from the first internal reflection surface to the outside of the waveguide, and transmit the part of the video image light being incident, and are disposed substantially parallel to each other inside the waveguide.

公开(公告)号：US20170351099A1

公开(公告)日：2017-12-07

申请号：US15544533

申请日：2015-12-28

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Ryuji UKAI ,  Michio HATAGI ,  Kunikazu OONISHI ,  Satoshi OUCHI ,  Yoshiho SEO ,  Yuya OGI

IPC: G02B27/01 ,  G02B27/48 ,  B60K35/00 ,  G03B21/14

CPC classification number: G02B27/0179 ,  B60K35/00 ,  G02B27/01 ,  G02B27/48 ,  G02B2027/0183 ,  G02F1/1335 ,  G03B21/14 ,  G03B21/145

Abstract: An image display device 1 includes a laser light source unit 10, a screen 12 formed of at least two diffusion members, a vibration mechanism 13 vibrating at least one diffusion member, and a scanning element 11 scanning laser light in a first direction (a y direction) on the screen and a second direction (an x direction) orthogonal to the first direction. A scanning speed of the scanning element 11 in the second direction is faster than a scanning speed in the first direction, and a diameter D of the laser light in the first direction on the screen is greater than an interval Yp in the first direction on the scanning trajectory in the second direction on the screen. Accordingly, it is possible to provide an image display device displaying an image having a low speckle with high luminance, without vibrating the diffusion member at a high speed.

公开(公告)号：US20160313560A1

公开(公告)日：2016-10-27

申请号：US15103921

申请日：2014-10-31

Applicant: HITACHI-LG DATA STORAGE, INC.

Inventor： Tomoto KAWAMURA ,  Satoshi OUCHI ,  Yoshiho SEO ,  Toshiteru NAKAMURA ,  Hidenao SAITO ,  Kenji KIYA ,  Yoshio OKAMOTO

IPC: G02B27/01

CPC classification number: G02B27/0172 ,  G02B27/0176 ,  G02B27/0179 ,  G02B27/20 ,  G02B2027/0123 ,  G02B2027/0138 ,  G02B2027/0185

Abstract: A head mounted display uses an image projection device comprising: an image generation unit for generating an image; a projection unit for guiding the image generated by the image generation unit to an observer's eyes; and a support for linking the projection unit and the image generation unit. The projection unit has a lens function which makes it easiest to see an image generated by the projection unit at a distance (Lobj) within a range between 30 cm and 3 m. Thereby, the image projection device operates at high resolution, has reduced size and weight, and reduces energy consumption.

Abstract translation: 头戴式显示器使用图像投影设备，包括：图像生成单元，用于产生图像; 投影单元，用于将由图像生成单元生成的图像引导到观察者的眼睛; 以及用于连接投影单元和图像生成单元的支撑。 投影单元具有透镜功能，使得在距离（Lobj）在30cm和3m之间的范围内看到由投影单元产生的图像最容易。 因此，图像投影装置以高分辨率工作，具有减小的尺寸和重量，并且降低能量消耗。

公开(公告)号：US20160041396A1

公开(公告)日：2016-02-11

申请号：US14817652

申请日：2015-08-04

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Tomoto KAWAMURA ,  Toshiteru NAKAMURA ,  Yoshiho SEO ,  Satoshi OUCHI ,  Hidenao SAITO ,  Yoshio OKAMOTO ,  Kenji KIYA

IPC: G02B27/01 ,  G02B17/00

CPC classification number: G02B27/0176 ,  G02B17/006 ,  G02B27/0172 ,  G02B2027/0112 ,  G02B2027/0118 ,  G02B2027/014 ,  G02B2027/015

Abstract: A video projection device 001 includes a video generation section 041 that has a micro display element 003 which generates video and an illuminating optical system 002 which illuminates a micro display element; projection section 043 that project the video which is generated by the video generation section onto the eyes of a user through an eyepiece section; and a mechanical support section 042 that connects the video generation section to the projection section using a housing section. The mechanical support section includes at least one transparent area 011 that is surrounded by the housing section, and penetrates in a direction parallel to a direction in which the video from the projection section is projected. The illuminating optical system includes a light source that emits light in a plurality of wavelength bands, and a controller 440 that controls the output of the light source.

Abstract translation: 视频投影设备001包括具有产生视频的微显示元件003和照亮微显示元件的照明光学系统002的视频产生部分041; 投影部043，其通过目镜部将由视频生成部生成的视频投影到用户的眼睛上; 以及使用壳体部分将视频产生部分连接到投影部分的机械支撑部分042。 机械支撑部分包括由壳体部分包围的至少一个透明区域011，并且沿与平行于投影部分的视频的方向平行的方向穿透。 照明光学系统包括发射多个波长带的光的光源和控制光源的输出的控制器440。

公开(公告)号：US20150161926A1

公开(公告)日：2015-06-11

申请号：US14559425

申请日：2014-12-03

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Yuya OGI ,  Fumio HARUNA ,  Yoshiho SEO ,  Satoshi OUCHI

IPC: G09G3/02 ,  G09G3/34 ,  H04N9/31

CPC classification number: H04N9/3129 ,  G09G3/001 ,  G09G3/346 ,  G09G5/003 ,  G09G2320/0285 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2320/0673 ,  G09G2320/08 ,  G09G2360/141 ,  G09G2360/144 ,  G09G2360/145 ,  H04N9/3182 ,  H04N9/3194

Abstract: A laser projection/display apparatus includes a photosensor for detecting light amounts of laser lights, and an image processing unit that processes an image signal based on the detected light amounts, and supplies the image signal to a laser light source drive unit. The image processing unit obtains data for making the light amounts of the laser lights, which are detected by the photosensor, equal to respective values at a second luminance that is different from a first luminance, which is the luminance of the image currently being displayed, during a flyback period of the image signal. The image processing unit processes an image signal to be supplied to the laser light source drive unit based on the data when the image signal is projected and displayed with the second luminance.

Abstract translation: 激光投射/显示装置包括用于检测激光的光量的光传感器，以及基于检测到的光量处理图像信号的图像处理单元，并将图像信号提供给激光源驱动单元。 图像处理单元获得用于使由光传感器检测的激光的光量等于与作为当前正在显示的图像的亮度的第一亮度不同的第二亮度的各个值的数据， 在图像信号的回扫期间。 图像处理单元基于当以第二亮度投影和显示图像信号时的数据来处理要提供给激光源驱动单元的图像信号。