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    ILLUMINATION DEVICE
    1.
    发明申请
    ILLUMINATION DEVICE 审中-公开

    公开(公告)号：US20200063933A1

    公开(公告)日：2020-02-27

    申请号：US16609556

    申请日：2018-05-18

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Shumpei NISHIO ,  Makio KURASHIGE

    IPC: F21S41/16 ,  F21S41/40 ,  G02B5/32 ,  F21S41/675 ,  F21S41/20

    Abstract: A coherent light beam from a light source is scanned by a scanning member and is incident to a light receiving surface of a light diffusing element. The incident light beam is emitted as diffused light, passes through an illumination optical system, and forms a drawing spot on an illumination target surface. When a scan control unit controls scanning of the light beam, an illumination area is formed by the moving drawing spot on the illumination target surface.

    DISPLAY DEVICE
    2.
    发明申请
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200041880A1

    公开(公告)日：2020-02-06

    申请号：US16339840

    申请日：2017-10-20

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Makio KURASHIGE ,  Shogo KUBOTA ,  Kazutoshi ISHIDA ,  Kaori NAKATSUGAWA

    IPC: G03B21/10 ,  G02B26/10 ,  G02B5/02 ,  G02F1/17 ,  G03B21/62 ,  G02B27/48 ,  G02B27/18 ,  G02B27/01

    Abstract: To provide a display device that makes speckles on a screen difficult to be visually recognized and allows an observer to easily observe an image projected on the screen easily. A display device includes a projector that emits coherent light, a screen that projects the coherent light emitted from the projector, and a first optical system that guides transmitted light or diffused light of the screen to an observing direction of an observer, and allows an observer to observe a real image or a virtual image of an image projected on the screen. The screen includes a plurality of particles including a first portion and a second portion, a particle layer having a plurality of particles, electrodes for applying a voltage to the particle layer to generate an electric field for driving the particles of the particle layer.

    PROJECTION DEVICE AND PROJECTION-TYPE VIDEO DISPLAY DEVICE
    3.
    发明申请
    PROJECTION DEVICE AND PROJECTION-TYPE VIDEO DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200018987A1

    公开(公告)日：2020-01-16

    申请号：US16578859

    申请日：2019-09-23

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Makio KURASHIGE ,  Kazutoshi ISHIDA ,  Tomoe TAKANOKURA ,  Yasuyuki OOYAGI

    IPC: G02B27/48 ,  G02B5/32 ,  G02B26/10 ,  G03B21/20 ,  G03H1/22 ,  G03H1/32 ,  H04N9/31

    Abstract: An illumination device includes an optical element including a hologram recording medium capable of diffusing a coherent light beam, the hologram recording medium comprising a plurality of regions, each region diffusing a coherent light beam to an illuminated region corresponding to that region, and an irradiation device configured to irradiate the optical element with the coherent light beam so as to allow the coherent light beam to scan the hologram recording medium. The coherent light beam incident to a position existing in each region of the hologram recording medium is diffused to an entire region of the illuminated region corresponding to the region in order to illuminate the entire region of the illuminated region.

    LIGHTING DEVICE
    4.
    发明申请
    LIGHTING DEVICE 审中-公开

    公开(公告)号：US20190072776A1

    公开(公告)日：2019-03-07

    申请号：US16078833

    申请日：2017-02-20

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Shumpei NISHIO ,  Makio KURASHIGE

    IPC: G02B27/42 ,  G02B5/32 ,  G02B27/09

    Abstract: Provided is a lighting device capable of safely illuminating a region to be illuminated having a first direction while making its edge sharp. A lighting device illuminates a region to be illuminated extending in a first direction and extending in a second direction intersecting with the first direction. The lighting device includes a light source and a diffractive optical element having a first hologram component and a second hologram component both of which diffract light from the light source and direct the light to the region to be illuminated, wherein the diffracted light from the first hologram component illuminates the entire region of the region to be illuminated and the diffracted light from the second hologram component illuminates the entire region of the region to be illuminated.

    ILLUMINATION DEVICE
    5.
    发明申请
    ILLUMINATION DEVICE 审中-公开

    公开(公告)号：US20180142840A1

    公开(公告)日：2018-05-24

    申请号：US15735780

    申请日：2016-06-22

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Makio KURASHIGE

    IPC: F21K9/233 ,  F21K9/60 ,  G02B27/48

    CPC classification number: F21K9/233 ,  F21K9/60 ,  F21S41/16 ,  F21S41/176 ,  G02B26/12 ,  G02B27/48

    Abstract: An illumination device (10) includes: a light diffusion device (50) including element diffusion devices (55) that diffuse incident light; a coherent light source (15) that emits coherent light; a shaping optical system (20) that shapes the coherent light; a scanner (30) that adjusts a traveling direction of the coherent light so as to allow the coherent light to scan the light diffusion device; and a light condensing optical system located on a light path of the coherent light from the shaping optical system up to the light diffusion device. The light condensing optical system condenses the coherent light such that a spot area on the light diffusion device is smaller than the element diffusion device. Each element diffusion device diffuses the coherent light incident thereon so as to illuminate an element illumination area corresponding to the element diffusion device.

    ILLUMINATION APPARATUS USING A COHERENT LIGHT SOURCE
    8.
    发明申请
    ILLUMINATION APPARATUS USING A COHERENT LIGHT SOURCE 审中-公开
    使用相干光源的照明设备

    公开(公告)号：US20160327907A1

    公开(公告)日：2016-11-10

    申请号：US15212673

    申请日：2016-07-18

    Applicant: DAI NIPPON PRINTING CO., LTD.

    Inventor： Makio KURASHIGE

    IPC: G03H1/32 ,  F21V14/04 ,  G02B27/48 ,  G02B5/32 ,  G03H1/22 ,  G03H1/00 ,  G02B3/08 ,  G03H1/02 ,  G03H1/04 ,  F21V5/00 ,  G02B5/02

    Abstract: A laser beam (L50) generated by a laser light source (50) is reflected by a light beam scanning device (60), and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates it onto the hologram recording medium (45). At this time, scanning is carried out by changing the bending mode of the laser beam with time so that the irradiation position of the bent laser beam (L60) on the hologram recording medium (45) changes with time. Regardless of the beam irradiation position, diffracted light (L45) from the hologram recording medium (45) reproduces the same reproduction image (35) of the scatter plate at the same position. An illumination spot in which speckles are reduced is formed on the light receiving surface (R) of an illuminating object (70) by the reproduction image (35) of the hologram.

    Abstract translation: 由激光源（50）产生的激光束（L50）被光束扫描装置（60）反射，照射到全息图记录介质（45）上。 在全息记录介质（45）上，通过使用会聚在扫描原点（B）上的参照光将散射板的图像（35）记录为全息图。 光束扫描装置（60）使扫描原点（B）处的激光束（L50）弯曲并将其照射到全息图记录介质（45）上。 此时，通过随时间改变激光束的弯曲模式来进行扫描，使得全息图记录介质（45）上的弯曲激光束（L60）的照射位置随时间变化。 不管光束照射位置，来自全息图记录介质（45）的衍射光（L45）在同一位置再现散射板的相同再现图像（35）。 通过全息图的再现图像（35）在照明对象（70）的光接收表面（R）上形成其中减少斑点的照明点。

    SCANNER DEVICE AND DEVICE FOR MEASURING THREE-DIMENSIONAL SHAPE OF OBJECT
    10.
    发明申请
    SCANNER DEVICE AND DEVICE FOR MEASURING THREE-DIMENSIONAL SHAPE OF OBJECT 审中-公开
    用于测量对象三维形状的扫描仪设备和设备

    公开(公告)号：US20150316892A1

    公开(公告)日：2015-11-05

    申请号：US14799038

    申请日：2015-07-14

    Applicant: DAI NIPPON PRINTING CO., LTD.

    Inventor： Makio KURASHIGE ,  Kazutoshi Ishida ,  Tomoe Takanokura ,  Yasuyuki Oyagi

    IPC: G03H1/04 ,  G01B11/25

    CPC classification number: H04N7/18 ,  G01B11/24 ,  G01B11/25 ,  G01B11/2518 ,  G02B27/48 ,  G03H1/0005 ,  G03H1/0443 ,  G03H1/2286 ,  G03H1/32 ,  G03H2001/0033 ,  G03H2001/0413 ,  G03H2001/0415 ,  G03H2001/0439 ,  G03H2001/2231 ,  G03H2001/2234 ,  G03H2001/2255 ,  G03H2001/2292 ,  G03H2210/11 ,  G03H2210/20 ,  G03H2222/36 ,  G03H2222/42 ,  G03H2222/54 ,  G03H2222/56 ,  G03H2223/14

    Abstract: A laser beam (L50) is reflected by a light beam scanning device (60) and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (45). At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam (L60) on the hologram recording medium (45) is changed with time. Diffracted light (L45) from the hologram recording medium (45) produces a reproduction image (35) of the linear scatter body on a light receiving surface (R) of the stage 210. When an object is placed on the light receiving surface (R), a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured.

    Abstract translation: 激光束（L50）被光束扫描装置（60）反射并照射到全息图记录介质（45）上。 在全息记录介质（45）上，通过使用会聚在扫描原点（B）上的参照光，将线状散射体的图像（35）记录为全息图。 光束扫描装置（60）将激光束（L50）在扫描原点（B）弯曲，并将激光束照射到全息图记录介质（45）上。 此时，通过随时间改变激光束的弯曲模式，全息图记录介质（45）上的弯曲激光束（L60）的照射位置随时间变化。 来自全息图记录介质（45）的衍射光（L45）在平台210的光接收表面（R）上产生线性散射体的再现图像（35）。当物体被放置在光接收表面 ），通过全息图再现光投影线图案，从而捕获投影图像，并测量对象的三维形状。

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