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公开(公告)号：US20160209739A1
公开(公告)日：2016-07-21
申请号：US14913986
申请日：2013-09-13
Applicant: Hitachi Maxell, Ltd.
Inventor： Kosuke MATOBA , Atsushi ISHIBASHI , Toshiyuki MORIYA , Takafumi ISHIZU , Kazuomi KANEKO , Koji HIRATA
CPC classification number: G03B21/28 , G03B21/145 , G03B21/30 , H04N9/3173
Abstract: Without increasing the size of a projection video display device that has a mirror that can be raised and lowered, this invention makes it easy to raise and lower said mirror. In order to do so, this projection video display device, which enlarges and projects an image from an image-displaying means, has a housing (10) and a raisable/lowerable mirror (30) wherein: a power supply, a light source, and a lens unit are accommodated inside the housing (10); said lens unit enlarges light from the light source after said light has been directed to the aforementioned image-displaying means; and the raisable/lowerable mirror (30) covers a projection-light opening (26) formed in the top surface of the housing (10), is provided so as to be able to rotate with respect to the housing (10), and has a convex mirror (110) on the inside surface thereof. With the raisable/lowerable mirror (30) covering the top surface of the housing (10), the top surface of the projection video display device forms a smoothly connected, smooth, convexly curved surface with no height difference between the edge of the raisable/lowerable mirror (30) and the front edge of the opening (26), and a half-bowl-shaped concavity (45) is formed on at least one side of the raisable/lowerable mirror (30) in the direction of the axis of rotation thereof.
Abstract translation: 在不增加具有能够升高和降低的反射镜的投影式显示装置的尺寸的情况下，本发明可以容易地升高和降低所述反射镜。 为了这样做，投影图像显示装置从图像显示装置放大和投射图像，具有壳体（10）和可升降镜（30），其中：电源，光源， 并且透镜单元容纳在所述壳体（10）内部; 所述透镜单元在所述光已经被引导到上述图像显示装置之后放大来自光源的光; 并且可升降镜（30）覆盖形成在壳体（10）的上表面中的突起开口（26），以能够相对于壳体（10）旋转，并且具有 在其内表面上的凸面镜（110）。 通过覆盖壳体（10）的上表面的可升降镜（30），投影视频显示装置的顶面形成平滑连接的平滑凸起的曲面，在可升降/ 可降低反射镜（30）和开口（26）的前边缘的半碗形凹部（45）形成在可升降镜（30）的至少一侧上，沿着 旋转。
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公开(公告)号：US20230266587A1
公开(公告)日：2023-08-24
申请号：US18139495
申请日：2023-04-26
Applicant: MAXELL, LTD. , Hitachi Industry & Control Solutions, Ltd.
Inventor： Koji HIRATA , Masahiko YATSU , Toshinori SUGIYAMA , Kazuomi KANEKO
CPC classification number: G02B27/0101 , B60K35/00 , G02B27/0018 , G02B5/0891 , G02B5/10 , G02B27/0068 , G02B2027/0118 , B60K2370/334 , G02B2027/011
Abstract: The information display apparatus configured to display video information of a virtual image on a reflecting surface of conveyance includes: a display configured to display the video information; and a virtual image optical system configured to display a virtual image at a front of the conveyance by reflecting light emitted from the display by means of the reflecting surface. The virtual image optical system includes a concave mirror and an optical element. The optical element is arranged between the display and the concave mirror, and is configured to correct distortion of the virtual image obtained so as to correspond to a viewpoint position of a driver on a basis of a shape of the concave mirror and a shape of the optical element. The information display apparatus further includes a virtual image double image conversion reducer configured to reduce double image conversion of the virtual image.
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公开(公告)号：US20220082826A1
公开(公告)日：2022-03-17
申请号：US17538520
申请日：2021-11-30
Applicant: MAXELL, LTD. , Hitachi Industry & Control Solutions, Ltd.
Inventor： Koji HIRATA , Masahiko YATSU , Toshinori SUGIYAMA , Kazuomi KANEKO , Shigeki HOSHINO
Abstract: A small information display apparatus capable of displaying video information on a windshield as a virtual image is provided. An information display apparatus configured to display video information of a virtual image on a windshield of a conveyance includes: a liquid crystal panel arranged as a video display apparatus configured to form the video information; and a virtual image optical system provided with a windshield for displaying the virtual image at a front of the conveyance by reflecting video of the liquid crystal panel by means of the windshield. The virtual image optical system is configured by arranging a concave mirror and an optical element between the concave mirror and the video display apparatus.
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公开(公告)号：US20200064640A1
公开(公告)日：2020-02-27
申请号：US16071523
申请日：2016-10-20
Applicant: MAXELL, LTD.
Inventor： Yuki NAGANO , Kazuomi KANEKO , Maki HANADA , Akio MISAWA , Kazuyuki TAKIZAWA
Abstract: The head-up display apparatus includes: a vehicle information acquisition unit configured to acquire various kinds of vehicle information which can be detected by a vehicle; a controller configured to control display of a video image based on the vehicle information; a video image display configured to form the video image based on an instruction from the controller; a mirror configured to reflect the video image formed by the video image display to project onto the windshield; a mirror driver configured to change an angle of the mirror based on an instruction from the controller; and a display distance adjusting mechanism configured to adjust a display distance of the virtual image with respect to the driver, and the controller adjusts the angle of the mirror via the mirror driver based on the vehicle information such that the virtual image can be displayed with respect to the driver overlapped with the scenery.
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公开(公告)号：US20190129172A1
公开(公告)日：2019-05-02
申请号：US16309471
申请日：2017-04-24
Applicant: MAXELL, LTD.
Inventor： Akio MISAWA , Nozomu SHIMODA , Kazuomi KANEKO , Koji HIRATA , Toshinori SUGIYAMA
Abstract: An object of the present invention is to provide a head-up display apparatus further reduced in size, the head-up display apparatus having: an image display apparatus including a light source and a display element; and a virtual image optical system in which light emitted from the image display apparatus is reflected by a windshield or a combiner of the vehicle so that a virtual image is displayed in front of the vehicle, wherein the virtual image optical system has a concave mirror and a distortion correcting lens, and the distortion correcting lens is disposed between the image display apparatus and the concave mirror, the concave mirror is disposed in a housing including an outer case along a shape of an effective light path area of the image light from the image display apparatus, and the image display apparatus is attached to part of an outer periphery of the housing.
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Patent Agency Ranking
公开(公告)号：US20240219718A1
公开(公告)日：2024-07-04
申请号：US18441027
申请日：2024-02-14
Applicant: MAXELL, LTD. , Hitachi Industry & Control Solutions, Ltd.
Inventor： Koji HIRATA , Masahiko YATSU , Toshinori SUGIYAMA , Kazuomi KANEKO
CPC classification number: G02B27/0101 , B60K35/00 , G02B5/0891 , G02B5/10 , G02B27/0018 , G02B27/0068 , B60K2360/334 , G02B2027/011 , G02B2027/0118
Abstract: The information display apparatus configured to display video information of a virtual image on a reflecting surface of conveyance includes: a display configured to display the video information; and a virtual image optical system configured to display a virtual image at a front of the conveyance by reflecting light emitted from the display by means of the reflecting surface. The virtual image optical system includes a concave mirror and an optical element. The optical element is arranged between the display and the concave mirror, and is configured to correct distortion of the virtual image obtained so as to correspond to a viewpoint position of a driver on a basis of a shape of the concave mirror and a shape of the optical element. The information display apparatus further includes a virtual image double image conversion reducer configured to reduce double image conversion of the virtual image.
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公开(公告)号：US20220365347A1
公开(公告)日：2022-11-17
申请号：US17870308
申请日：2022-07-21
Applicant: MAXELL, LTD.
Inventor： Akio MISAWA , Nozomu SHIMODA , Kazuomi KANEKO , Koji HIRATA , Toshinori SUGIYAMA
Abstract: An object of the present invention is to provide a head-up display apparatus further reduced in size, the head-up display apparatus having: an image display apparatus including a light source and a display element; and a virtual image optical system in which light emitted from the image display apparatus is reflected by a windshield or a combiner of the vehicle so that a virtual image is displayed in front of the vehicle, wherein the virtual image optical system has a concave mirror and a distortion correcting lens, and the distortion correcting lens is disposed between the image display apparatus and the concave mirror, the concave mirror is disposed in a housing including an outer case along a shape of an effective light path area of the image light from the image display apparatus, and the image display apparatus is attached to part of an outer periphery of the housing.
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公开(公告)号：US20190265472A1
公开(公告)日：2019-08-29
申请号：US16336935
申请日：2017-09-27
Applicant: MAXELL, LTD.
Inventor： Toshinori SUGIYAMA , Koji HIRATA , Masahiko YATSU , Yasuhiko KUNII , Kazuomi KANEKO
Abstract: Provided is a light source apparatus that is small and lightweight, has high light utilization efficiency, and is easily utilizable as a modularized, planar light source. The light source apparatus 10 has a light source unit including a plurality of LED elements 14, a LED collimator 15 including a plurality of collimator elements each arranged on a light-emitting axis of each of the plural LED elements 14, and a light guide 17 disposed on an emission side of the LED collimator 15. The light guide 17 includes an incidence portion 171 having an incidence surface on which light on the light-emitting axis from the LED elements 14 is incident, and an emission portion 173c having an emission surface emitting light, and has a free-form surface shape for realizing predetermined light distribution control on at least one of the incidence surface and the emission surface.
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公开(公告)号：US20180314063A1
公开(公告)日：2018-11-01
申请号：US15766398
申请日：2015-10-09
Applicant: MAXELL, LTD. , HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.
Inventor： Masahiko YATSU , Koji HIRATA , Kazuomi KANEKO
Abstract: A head-up display device includes: an image formation unit which emits light including image information; and a projection optical system including an ocular optical system which displays a virtual image by reflecting the light emitted from the image formation unit. The ocular optical system includes spherical lenses, a free-form curved surface lens, a reflection mirror, and a free-form curved surface mirror, and is configured by arranging, in a space on the side of the ocular optical system of a plane conjugate with the virtual image plane with respect to the ocular optical system, a first small lens system which achieves first focus position movement and on which separated light from the image formation unit is made to be incident, and a second small lens system which achieves second focus position movement and on which separated light from the image formation unit is made to be incident.
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公开(公告)号：US20170350566A1
公开(公告)日：2017-12-07
申请号：US15539243
申请日：2014-12-26
Applicant: HITACHI MAXELL, LTD.
Inventor： Chohei ONO , Kazuomi KANEKO , Nobuyuki KAKU
CPC classification number: F21S8/06 , F21S8/033 , F21S8/04 , F21V23/04 , F21Y2115/10 , G03B21/008 , G03B21/16 , G03B21/2033 , G03B21/56
Abstract: An illumination device configured to emit illumination light has a light source arranged inside a housing generating the illumination light; a diffusing panel attached to the housing; and a projector arranged inside a space formed by the housing and a part of the diffusing panel for projecting an image onto a projection surface. An optical unit is arranged so that an incident direction of a light flux incident from a display element provided in the projector onto a projection optical system of the projector is substantially vertical or in a direction closer to a vertical direction than a direction parallel to a horizontal plane, or so that an optical axis of the projection optical system on which the light flux from the display element provided in the projector is incident is substantially vertical or in a direction closer to the vertical direction than the direction parallel to the horizontal plane.
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