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WO2018110336A1 - Dispositif d'affichage tête haute - Google Patents

Dispositif d'affichage tête haute Download PDF

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Publication number
WO2018110336A1
WO2018110336A1 PCT/JP2017/043408 JP2017043408W WO2018110336A1 WO 2018110336 A1 WO2018110336 A1 WO 2018110336A1 JP 2017043408 W JP2017043408 W JP 2017043408W WO 2018110336 A1 WO2018110336 A1 WO 2018110336A1
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
display light
screen
image
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/043408
Other languages
English (en)
Japanese (ja)
Inventor
野村　英司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP2018556578A priority Critical patent/JPWO2018110336A1/ja
Publication of WO2018110336A1 publication Critical patent/WO2018110336A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/23—Head-up displays [HUD]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators

Definitions

  • the present invention relates to a head-up display device mainly used in, for example, an automobile, and more specifically, a vehicle visually recognized by light transmitted through a windshield via a translucent display member (windshield or combiner).
  • the present invention relates to a head-up display device capable of visually recognizing a front view and images and information provided by light reflected from a windshield in a driver (observer) view.
  • a head-up display device has been developed as a means of directly displaying information in the observer's field of view.
  • light emitted from the LCD is normally transmitted and reflected by a combiner made of a transparent base material including a windshield and a half mirror material. Accordingly, the observer can acquire information as a virtual image displayed on the windshield or the like, and simultaneously acquire external information such as a vehicle front view that is visible through the windshield or the like.
  • the driving means is operated in accordance with the viewpoint position information of the observer, the mirror that reflects the display light is tilt-rotated, and the entire emission device is driven.
  • a technique for adjusting the projection position of the display light onto the windshield according to the height of the viewpoint is disclosed.
  • the virtual image that can be visually recognized by the observer needs to be visible with both eyes of the observer and the distortion of the virtual image needs to be almost the same.
  • the range in which the virtual image is visually recognized with both eyes is called an eye box.
  • a driving device that tilts and rotates the mirror by the driving means is required, and further, the entire emitting device needs to be driven to match the virtual image positions. This necessitates a drive system mechanism, resulting in high costs.
  • the eye box is made larger, the configuration in which the mirror is tilted and rotated by the driving means becomes unnecessary. It is disadvantageous for in-vehicle use.
  • the present invention has been made in view of the above-described problems, and an object thereof is to provide a head-up display device capable of forming a virtual image from a wide range of viewpoint positions while reducing the size and suppressing the cost.
  • the head-up display device of the present invention is An image forming unit for forming an image; A single intermediate screen for generating display light corresponding to the image formed by the image forming unit; An optical system that allows display light emitted from the intermediate screen to pass through and is incident on the screen; The optical system includes a first mirror that reflects display light emitted from the intermediate screen, and a second mirror that further reflects the display light reflected by the first mirror and causes the display light to enter the screen. The display light emitted from the intermediate screen intersects with the display light reflected by the second mirror, and a virtual image is formed by the display light entering the screen.
  • the second mirror is a cross section cut along the first virtual plane when a plane including a line connecting the eyes of the observer and the center of the virtual image and passing through the center of the intermediate screen is the first virtual plane. And a reflecting surface having a convex arc.
  • a head-up display device capable of forming a virtual image from a wide range of viewpoint positions while reducing the size and suppressing the cost.
  • FIG. 2 is a diagram showing a configuration of a drawing unit 100.
  • FIG. It is a whole optical path figure of a present Example.
  • FIG. 4 is a partial optical path diagram in which a portion indicated by an arrow IV in FIG. 3 is enlarged. It is a figure which superimposes and shows the virtual image visually recognized within an eyebox.
  • FIG. 1 is a diagram showing a state in which the head-up display device according to the present embodiment is mounted on a vehicle body VH.
  • a drawing unit 100 is arranged in the dashboard DB of the vehicle body VH, and the display light is projected onto the windshield (screen) WS of the vehicle body VH.
  • the display light is guided to the pupil EY of the driver DR who is an observer by reflection from the windshield WS, and displays a virtual image (display image) V.
  • the driver DR can observe a real image such as a landscape transmitted through the windshield WS in addition to the virtual image.
  • the drawing unit 100 and the windshield WS constitute a head-up display device.
  • FIG. 2 is a diagram showing a schematic configuration of the drawing unit 100, which includes a line L1 that connects the pupil EY of the driver DR (FIG. 1) that is an observer and the center of the virtual image, and passes through the center of the light emitting surface 111a of the LCD 111.
  • a plane (referred to as a first virtual plane) is shown.
  • the drawing unit 100 mainly includes a drawing device 110 including an LCD 111 and an image forming unit 101, a first mirror M1, a second mirror M2, and a housing 130 that accommodates these.
  • the first mirror M1 has a reflecting surface M1a having a concave arc on the first virtual surface.
  • the second mirror M2 has a reflecting surface M2a having a convex arc on the first virtual surface.
  • the first mirror M1 and the second mirror M2 constitute an optical system.
  • the configuration of the drawing device is described in detail in, for example, Japanese Patent Application Laid-Open No. 2012-203176.
  • the LCD 111 as an intermediate screen is formed by adhering polarizing plates on both front and rear surfaces of a liquid crystal cell in which a liquid crystal layer is sealed in a pair of translucent substrates on which a transparent electrode film is formed.
  • a light beam guided from a light source (not shown) to the LCD 111 passes through the LCD 111 driven corresponding to the image formed by the image forming unit 101 and becomes display light L representing an image to be displayed.
  • the light emitting surface 111a of the LCD 111 is inclined at an angle ⁇ with respect to the display light L emitted from the center of the light emitting surface 111a of the LCD 111 (in other words, the emission direction of the display light L with respect to the perpendicular of the light emitting surface 111a).
  • the angle ⁇ is inclined by 10 ° or more. Therefore, when stray light such as sunlight is incident along the optical path of the optical system, it can be prevented from being reflected by the light emitting surface 111a and reaching the vicinity of the driver DR via the mirror or the windshield WS.
  • the display light L emitted from the LCD 111 is reflected and enlarged by the first mirror M1 and the second mirror M2, and further reflected by the windshield WS to form a virtual image V at the pupil EY of the driver DR.
  • the driver DR can easily obtain information while reducing eye movement.
  • the drawing unit 100 since the display light L emitted from the LCD 111 and directed to the first mirror M1 intersects with the display light L reflected by the second mirror M2 and directed to the windshield WS, the drawing unit 100 Is provided in the dashboard DB, the optical path length of the display light L can be secured relatively long and distortion can be suppressed. Therefore, distortion of an image formed in advance by the image forming unit 101 can be suppressed small.
  • the enlarged projection optical system that reflects the display light L with the reflecting surface M2a having a convex arc in the cross section of the first virtual surface can secure a large eye box, the drawing unit 100 and the mirror are rotated. A driving device is unnecessary, which contributes to cost reduction.
  • FIG. 3 is an overall optical path diagram of the present embodiment in the first virtual plane.
  • FIG. 4 is a partial optical path diagram in which a portion indicated by an arrow IV in FIG. 3 is enlarged.
  • S1 and S2 following S0 corresponding to the virtual image plane are virtual planes, and S3 corresponds to a pupil.
  • S4 is a windshield, S6 is a first mirror, S5 is a second mirror, and S7 is a light emitting surface of the LCD.
  • each surface Si is specified by the surface vertex coordinates (x, y, z) and the rotation angle (ADE).
  • the surface vertex coordinates of each surface Si are the local orthogonal coordinate system (X, y, z) in the global orthogonal coordinate system (x, y, z) with the surface vertex as the origin of the local orthogonal coordinate system (X, Y, Z). It is represented by the coordinates (x, y, z) of the origin of Y, Z) (unit: mm).
  • the inclination of each surface Si is represented by a rotation angle ADE about the X axis with the surface vertex being the center.
  • the unit of the rotation angle is °, and the counterclockwise direction when viewed from the negative direction of the X axis is the positive direction of the rotation angle of the X rotation.
  • the global orthogonal coordinate system (x, y, z) is an absolute coordinate system that coincides with the local orthogonal coordinate system (X, Y, Z) of the pupil S3. That is, the arrangement data of each surface Si is expressed in a global coordinate system with the pupil center as the origin.
  • the direction from the pupil S3 toward the windshield is the -Z direction or -z direction
  • the upward direction with respect to the pupil is the + Y direction or + y direction
  • the left direction when viewing the pupil from the windshield is the + X direction or + X direction.
  • the windshield S4, the first mirror S6, and the second mirror S5 are free-form surfaces, and the free-form surface shape has the surface vertex as the origin, the Z-axis in the optical axis direction, and the optical axis.
  • the height in the vertical direction is Z and is expressed by the following “Equation 1”.
  • the reference wavelength used for calculation in this example was 520 nm, and the light emitting surface size of the LCD was X direction: 40.896 mm ⁇ Y direction: 20.448 mm.
  • the eye box size is ⁇ 70 mm to +70 mm in the X direction and ⁇ 60 mm to +60 mm in the Y direction.
  • the first mirror has a concave reflecting surface and the second mirror has a convex reflecting surface in the first virtual surface.
  • both the first mirror and the second mirror have a concave reflecting surface.
  • FIG. 5 shows a virtual image (a lattice image in which vertical and horizontal lines are orthogonally displayed on the LCD) visually recognized in the eye box in this embodiment.
  • a virtual image that can be seen by changing the position of the eye point in the global Cartesian coordinate system (x, y, z) to (0, 0), (+70 mm, +60 mm), (+70 mm, ⁇ 60 mm). The center of the virtual image is aligned.
  • FIG. 5 it can be seen that even if the position of the eye point is changed, the lattice images are almost the same, and the same virtual image can be visually recognized in the entire eye box regardless of the viewpoint position of the driver.
  • Visibility can be enhanced by displaying on the LCD an optimal image (for example, an intermediate image between the virtual image viewed with the right eye and the virtual image viewed with the left eye) according to the eye position of the driver.
  • an optimal image for example, an intermediate image between the virtual image viewed with the right eye and the virtual image viewed with the left eye
  • the present invention is not limited to the embodiments described in the specification, and other embodiments and modifications are apparent to those skilled in the art from the embodiments and ideas described in the present specification. It is.
  • a symmetrical windshield is assumed.
  • the windshield is not limited to this, and is not symmetrical, or has a symmetry and is tilted. But you can.
  • the display member and the head-up display device of the present invention can be used not only for automobiles but also for airplanes and heavy machinery.
  • the present invention can be used for a head-up display device.
  • Drawing Unit 110 Drawing Device 101 Image Forming Unit 111 LCD 130 Housing DB Dashboard DR Driver M1, M2 Mirror VH Car body WS Windshield

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

Ce dispositif d'affichage tête haute comprend une unité de formation d'image (101) pour former une image, un seul écran intermédiaire (111) pour produire une lumière d'affichage correspondant à l'image, et un système optique pour transmettre la lumière d'affichage émise à partir de l'écran intermédiaire et amener la lumière d'affichage à être incidente sur un écran (WS), le système optique ayant un premier miroir (M1) pour réfléchir la lumière d'affichage émise à partir de l'écran intermédiaire, et un second miroir (M2) pour réfléchir davantage la lumière d'affichage réfléchie par le premier miroir et amener la lumière d'affichage à être incidente sur l'écran (WS), la présente invention étant configurée de telle sorte que la lumière d'affichage émise par l'écran intermédiaire (111) et la lumière d'affichage réfléchie par le second miroir (M2) se croisent, et la lumière d'affichage est incidente sur l'écran, moyennant quoi une image virtuelle est formée, et lorsqu'un plan passant par le centre de l'écran intermédiaire (111) et comprenant une ligne (L1) reliant l'oeil d'un observateur et le centre de l'image virtuelle est désigné comme premier plan imaginaire, le second miroir (M2) a une surface réfléchissante ayant un arc convexe dans une section transversale de celui-ci coupé par le premier plan imaginaire.
PCT/JP2017/043408 2016-12-13 2017-12-04 Dispositif d'affichage tête haute Ceased WO2018110336A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018556578A JPWO2018110336A1 (ja) 2016-12-13 2017-12-04 ヘッドアップディスプレイ装置

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JP2016241028 2016-12-13
JP2016-241028 2016-12-13

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WO2018110336A1 true WO2018110336A1 (fr) 2018-06-21

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PCT/JP2017/043408 Ceased WO2018110336A1 (fr) 2016-12-13 2017-12-04 Dispositif d'affichage tête haute

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270693A (zh) * 2018-08-06 2019-01-25 乔士琪 一种前装汽车抬头显示装置
CN113568172A (zh) * 2021-07-16 2021-10-29 华域视觉科技(上海)有限公司 多虚像增强现实显示系统及车辆
CN114077063A (zh) * 2020-08-13 2022-02-22 矢崎总业株式会社 车辆用显示装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10115797A (ja) * 1996-10-09 1998-05-06 Shimadzu Corp ヘッドアップディスプレイ
JP2005186913A (ja) * 2003-12-26 2005-07-14 Yazaki Corp ヘッドアップディスプレイ装置
JP2009192977A (ja) * 2008-02-18 2009-08-27 Epson Imaging Devices Corp 表示装置
JP2011022210A (ja) * 2009-07-13 2011-02-03 Fujifilm Corp 表示装置
JP2013061554A (ja) * 2011-09-14 2013-04-04 Ricoh Co Ltd 画像形成装置、画像形成装置を搭載した車両
US20150061976A1 (en) * 2013-09-05 2015-03-05 Texas Instruments Incorporated Multi-focus heads-up display using single picture generator unit
JP2016030461A (ja) * 2014-07-25 2016-03-07 カルソニックカンセイ株式会社 車両用ヘッドアップディスプレイ装置
WO2016041619A1 (fr) * 2014-09-19 2016-03-24 Audi Ag Affichage tête haute pour véhicule automobile, véhicule automobile pourvu d'un affichage tête haute et procédé de disposition d'un affichage tête haute dans un véhicule automobile
JP2016170052A (ja) * 2015-03-13 2016-09-23 日本精機株式会社 目検出装置及び車両用表示システム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102472895B (zh) * 2010-04-20 2014-08-13 松下电器产业株式会社 图像显示装置
JP2015194709A (ja) * 2014-03-28 2015-11-05 パナソニックＩｐマネジメント株式会社 画像表示装置
JP6465353B2 (ja) * 2015-04-28 2019-02-06 日本精機株式会社 ヘッドアップディスプレイ装置
CN205594239U (zh) * 2015-12-24 2016-09-21 深圳点石创新科技有限公司 一种抬头显示器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10115797A (ja) * 1996-10-09 1998-05-06 Shimadzu Corp ヘッドアップディスプレイ
JP2005186913A (ja) * 2003-12-26 2005-07-14 Yazaki Corp ヘッドアップディスプレイ装置
JP2009192977A (ja) * 2008-02-18 2009-08-27 Epson Imaging Devices Corp 表示装置
JP2011022210A (ja) * 2009-07-13 2011-02-03 Fujifilm Corp 表示装置
JP2013061554A (ja) * 2011-09-14 2013-04-04 Ricoh Co Ltd 画像形成装置、画像形成装置を搭載した車両
US20150061976A1 (en) * 2013-09-05 2015-03-05 Texas Instruments Incorporated Multi-focus heads-up display using single picture generator unit
JP2016030461A (ja) * 2014-07-25 2016-03-07 カルソニックカンセイ株式会社 車両用ヘッドアップディスプレイ装置
WO2016041619A1 (fr) * 2014-09-19 2016-03-24 Audi Ag Affichage tête haute pour véhicule automobile, véhicule automobile pourvu d'un affichage tête haute et procédé de disposition d'un affichage tête haute dans un véhicule automobile
JP2016170052A (ja) * 2015-03-13 2016-09-23 日本精機株式会社 目検出装置及び車両用表示システム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270693A (zh) * 2018-08-06 2019-01-25 乔士琪 一种前装汽车抬头显示装置
CN114077063A (zh) * 2020-08-13 2022-02-22 矢崎总业株式会社 车辆用显示装置
CN113568172A (zh) * 2021-07-16 2021-10-29 华域视觉科技(上海)有限公司 多虚像增强现实显示系统及车辆

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