WO2018116896A1 - Dispositif d'affichage frontal - Google Patents

Dispositif d'affichage frontal Download PDF

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Publication number
WO2018116896A1
WO2018116896A1 PCT/JP2017/044469 JP2017044469W WO2018116896A1 WO 2018116896 A1 WO2018116896 A1 WO 2018116896A1 JP 2017044469 W JP2017044469 W JP 2017044469W WO 2018116896 A1 WO2018116896 A1 WO 2018116896A1
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WO
WIPO (PCT)
Prior art keywords
screen
display
projector
image
light
Prior art date
Application number
PCT/JP2017/044469
Other languages
English (en)
Japanese (ja)
Inventor
芽久実 佐藤
一夫 諸橋
Original Assignee
日本精機株式会社
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 日本精機株式会社 filed Critical 日本精機株式会社
Priority to JP2018557691A priority Critical patent/JP7076065B2/ja
Publication of WO2018116896A1 publication Critical patent/WO2018116896A1/fr

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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—Arrangement of adaptations of instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

Definitions

  • the present invention relates to a head-up display device.
  • a conventional head-up display device projects a part of display light from a single projector onto a nearby display screen, and another part of the display light is disposed closer to the projector than the nearby display screen.
  • the viewer can display the near display projected on the near display screen and the far display displayed on the far display screen at a position farther from the viewer than the near display.
  • the conventional head-up display device may be configured such that the distant display appears to be inclined toward the far side as viewed from the viewer.
  • the distant display screen has been arranged so as to be greatly inclined with respect to the display light. That is, when the distant display screen is arranged to be inclined with respect to the display light, the distant side of the distant display screen is arranged close to the projector side, and the vicinity side is arranged apart from the projector side, There is a problem in that unevenness in display luminance occurs because the far side is viewed brightly and the near side is viewed dark in the far display plane viewed by the viewer.
  • the present invention focuses on the above-mentioned problems and provides a head-up display device capable of suppressing unevenness in display luminance even when a screen is arranged to be inclined with respect to display light.
  • the head-up display device includes a projector that projects display light, an image control unit that controls the projector, a proximity portion that projects the display light and is close to the projector, and the projector.
  • the display light is projected from the projector in which the brightness of the adjacent part is dark with respect to the part.
  • the present invention can provide a head-up display device that can suppress unevenness in display luminance even when the screen is arranged to be inclined with respect to the display light.
  • a head-up display device (hereinafter referred to as a HUD device) 100 is mounted on, for example, an automobile, and as shown in FIG. 1, a housing 10, a projection device 20, a first screen 30, A second screen 40, a plane mirror (relay optical system) 50, a concave mirror (relay optical system) 60, and an image control unit 80 are provided.
  • the HUD device 100 uses a plane mirror 50 and a concave mirror 60 to display a first display image M1 projected on the first screen 30 by the projection device 20 and a second display image M2 projected on the second screen 40 by the projection device 20.
  • the first virtual image V1 of the first display image M1 and the second virtual image V2 of the second display image M2 are displayed to the user E.
  • the housing 10 is formed of, for example, black light-shielding synthetic resin, and houses the projection device 20, the first screen 30, the second screen 40, the plane mirror 50, and the concave mirror 60 inside, and includes an image control unit 80 outside. ing.
  • the housing 10 has an opening 10a that allows display light N to be described later to pass through the windshield 200, and the opening 10a is covered with a translucent cover 10b.
  • the projection device 20 emits the first projection light L1 indicating the first display image M1 and the second projection light L2 indicating the second display image M2 toward the first screen 30 and the second screen 40,
  • the first display image M1 and the second display image M2 are formed on the first screen 30 and the second screen 40.
  • the detailed configuration of the projection device 20 will be described in detail later.
  • the first screen 30 is a screen arranged close to a projector 21 (to be described later) of the projection device 20 and corresponds to the proximity placement screen of the present invention.
  • the first screen 30 receives the first projection light L1 emitted from the projection device 20 on the back surface,
  • This is a transmission screen that displays the first display image M1 on the front surface side, and is configured by, for example, a holographic diffuser, a microlens array, a diffusion plate, or the like.
  • the first screen 30 displays the first display image M1
  • the first display light N1 indicating the first display image M1 is projected onto the windshield 200 by the plane mirror 50 and the concave mirror 60, and the direction of the user E by the windshield 200. Reflected by (eye box).
  • the user E can visually recognize the 1st virtual image V1 on the other side of the windshield 200.
  • FIG. 2 the first screen 30 has a concave display area provided with a cutout portion 30a obtained by cutting out a part of a substantially rectangular outer edge portion into a rectangular shape. Therefore, the first virtual image V1 also has a concave display area.
  • the second projection light L2 reaches the second screen 40 described later through the notch 30a of the first screen 30 as shown in FIG.
  • the second screen 40 is a screen arranged on the projector 21 of the projection apparatus 20 which will be described later, spaced from the first screen 30, corresponds to the spaced arrangement screen of the present invention, and matches the notch 30 a of the first screen 30.
  • it is constituted by a holographic diffuser, a microlens array, a diffusion plate, or the like.
  • the second display light N2 indicating the second display image M2 is projected onto the windshield 200 by the plane mirror 50 and the concave mirror 60, and the windshield 200 viewed from the user E is displayed.
  • the second virtual image V2 is displayed on the other side.
  • the first screen 30 is arranged closer to the projection device 20 than the second screen 40. That is, the optical path length of the first display light N1 traveling from the first screen 30 toward the user E is longer than the optical path length of the second display light N2 traveling from the second screen 40 toward the user E. Therefore, the distance (display distance) from the user E to the position where the first virtual image V1 is displayed is longer than the distance (display distance) from the user E to the position where the second virtual image V2 is displayed.
  • the HUD device 100 can display the first virtual image V1 so that it is at a position farther than the second virtual image V2.
  • the first virtual image V1 is inclined, its display distance is 3 to 5 m, and the display distance of the second virtual image V2 is 2 m.
  • the first screen 30 is arranged to be inclined at a predetermined angle or more with respect to the optical axis of the first display light N1.
  • the curved surface shape of the first reflection surface 231 is gradually changed to connect the first projection light L1.
  • the image distance can be gradually changed. Therefore, even when the first screen 30 is tilted by a predetermined angle or more with respect to the optical axis, the first display image M1 can be formed in a wide range (including the entire area) of the first screen 30, and from the user E
  • the first virtual image V1 that has a sense of depth and is not blurred can be visually recognized.
  • the second screen 40 is disposed so as to have a predetermined angle (including 0 degrees) with respect to the optical axis of the second display light N2 that travels from the second screen 40 toward the user E.
  • the plane mirror (relay optical system) 50 is formed by, for example, forming a reflective film on the surface of a base material made of synthetic resin or glass material by means of vapor deposition or the like, and emitted from the first screen 30 and the second screen 40.
  • the first display light N1 and the second display light N2 are reflected toward the concave mirror 60.
  • the first display image M1 illustrated in the vicinity of the plane mirror 50 shows an image projected on the plane mirror 50, and is illustrated in order to facilitate understanding of which is the top and bottom when displayed as the first virtual image V1. It is a thing.
  • the concave mirror (relay optical system) 60 is formed, for example, by forming a reflective film on the surface of a base material made of a synthetic resin material by means such as vapor deposition.
  • the first display light N1 reflected by the plane mirror 50, the second display It is a mirror having a concave free-form surface that further reflects the light N2 and emits it toward the windshield 200.
  • 61 is an electric motor that adjusts the angle of the concave mirror 60, and its operation is controlled by an image control unit 80 described later.
  • the first display light N1 and the second display light N2 reflected by the concave mirror 60 pass through the translucent cover 10b provided in the opening 10a of the housing 10 and reach the windshield 200.
  • the first display light N1 and the second display light N2 reflected by the windshield 200 form a first virtual image V1 and a second virtual image V2 at a front position of the windshield 200.
  • the 1st display image M1 illustrated in the vicinity of the concave mirror 60 and the windshield 200 shows the image projected on the concave mirror 60 and the windshield 200, respectively, and when it displays as the 1st virtual image V1, which is up-down It is shown for ease of understanding.
  • the HUD device 100 can cause the user E to visually recognize both the virtual image V (the first virtual image V1 and the second virtual image V2) and the outside scene that actually exists in front of the windshield 200.
  • the concave mirror 60 has a function as a magnifying glass, and magnifies the display image M displayed on the projection device 20 and reflects it to the windshield 200 side. That is, the first virtual image V1 and the second virtual image V2 visually recognized by the user E are images in which the first display image M1 and the second display image M2 displayed by the projection device 20 are enlarged.
  • the concave mirror 60 also has a function of reducing the distortion of the first virtual image V1 and the second virtual image V2 caused by the windshield 200 being a curved surface.
  • the projection apparatus 20 includes a projector 21 that generates and emits first projection light L1 and second projection light L2, and first projection light L1 and second projection incident from the projector 21.
  • a first screen 30 that includes a fold mirror 22 that reflects and reflects the light L2 and an imaging position adjustment mirror 23 that adjusts the imaging distance of the light incident from the fold mirror 22, and is separated from the projection apparatus 20 by a different distance.
  • the first projection light L1 and the second projection light L2 are imaged on the second screen 40 and the second screen 40, respectively.
  • the projector 21 has a reflective display element such as DMD (Digital MicroMirror Device) and LCOS (registered trademark: Liquid Crystal On Silicon), and a transmissive display element such as a TFT (Thin Film Transistor) liquid crystal panel, and an image control unit. Based on the control signal from 80, the first projection light L1 and the second projection light L2 for displaying the first display image M1 and the second display image M2 are emitted toward the fold mirror 22.
  • DMD Digital MicroMirror Device
  • LCOS registered trademark: Liquid Crystal On Silicon
  • TFT Thin Film Transistor
  • the distorted virtual image V (first virtual image V1, first
  • the display image M (first display image M1, second display image M2) distorted in advance in consideration of the optical characteristics and arrangement of the respective optical members is controlled so as not to become two virtual images V2).
  • the fold mirror 22 is formed by forming a reflective film on the surface of a base material made of, for example, a synthetic resin or a glass material by means such as vapor deposition, and the first projection light L1 and the second projection emitted from the projector 21. This is a plane mirror that reflects the light L2 to an imaging position adjusting mirror 23 described later.
  • the package of the projection device 20 can be made more compact.
  • a plurality of fold mirrors 22 may be provided between the projector 21 and the imaging position adjusting mirror 23, or the fold mirror 22 may be omitted.
  • the imaging position adjusting mirror 23 is formed by forming a reflective film on the surface of a base material made of, for example, a synthetic resin material or a glass material by means such as vapor deposition, and the first projection light L1 is applied on the same base material. It has the 1st reflective surface 231 which receives light, and the 2nd reflective surface 232 which receives the 2nd projection light L2.
  • the first reflecting surface 231 is formed by a flat reflecting surface, and the received first projection light L1 is reflected on the first screen 30 without changing the imaging distance.
  • a first display image M1 is formed on the surface side of the image.
  • the second reflection surface 232 is formed by a free-form surface having a convex reflection surface, and the received second projection light L2 is reflected on the second screen 40 by changing the imaging distance to be longer.
  • a second display image M2 is formed on the surface side of the image.
  • the imaging position adjusting mirror 23 in the present embodiment is different in the curved shape of the first reflecting surface 231 that reflects the first projection light L1 and the second reflecting surface 232 that reflects the second projection light L2.
  • the imaging distance can be made different between the first projection light L1 and the second projection light L2 simply by receiving the projection light L from one projector 21. Therefore, the first virtual image V1 and the second virtual image V2 visually recognized by the user E can be displayed at different display distances, and the information displayed as the first virtual image V1 and the information displayed as the second virtual image V2. It can be differentiated, and the identifiability of information can be improved.
  • the imaging distance between at least the first projection light L1 and the second projection light L2 emitted from the same projector 21 can be made different, the cost can be reduced compared with the case where a plurality of projectors 21 are provided. be able to.
  • the projection light L from the projector 21 is applied to the imaging position adjusting mirror 23. Since at least the imaging distance between the first projection light L1 and the second projection light L2 can be made different by simply irradiating, space saving can be realized without complicating the optical path of the projection light L. Further, the relative positions of the first reflecting surface 231 and the second reflecting surface 232 are not easily shifted due to an assembly error or the like, and the first projection light L1 and the second projection light L2 are accurately transmitted to the first screen 30 and the second screen. 40 can be imaged.
  • the projector 21 of the present embodiment does not project the projection light L for generating an image near the boundary between the first reflecting surface 231 and the second reflecting surface 232 of the imaging position adjusting mirror 23.
  • the first display image M1 to be displayed on the first screen 30 is the first display image M1. It is possible to prevent the image from being displayed on the second screen 40.
  • the HUD device 100 mainly includes a control unit 81, a storage unit 82, a driving unit 83, a projector 21, and an electric motor 61 that drives the concave mirror 60.
  • the image control unit 80 according to the present embodiment includes a control unit 81 and a storage unit 82.
  • the image controller 80 is mounted on a printed circuit board (not shown) provided outside the housing of the HUD device 100. Note that the image control unit 80 may be built in the housing of the HUD device 100.
  • the control means 81 is composed of a microcomputer, and includes a CPU that executes processing, a RAM that temporarily stores calculation results, display data, and the like, and a ROM that stores processing programs to be described later.
  • the control means 81 is connected to the multiple signal line B, and receives control device information of various control devices connected to the multiple signal line B.
  • control devices connected to the multiple signal line B include a vehicle ECU 90, an air conditioner (hereinafter referred to as an air conditioner) 91, an audio 92 mounted on the vehicle, a navigation device 93, and the like.
  • the control device information input to the control means 81 includes various vehicle travel information relating to the vehicle speed, engine speed, remaining fuel amount and engine coolant temperature of the vehicle ECU 90, seat belt alarm, tire air pressure alarm, ABS (Anti-lock brake system) Vehicle information such as alarm information such as abnormality alarm, engine coolant temperature alarm, half door warning, remaining fuel warning, air conditioner 91 air conditioning management information, audio 92 music selection information or radio reception information And route information of the navigation device 93 and GPS reception information.
  • the control means 81 performs predetermined calculation processing based on the vehicle information input from various control devices and information from the various control devices, and generates image data to be projected by the projector 21.
  • the control unit 81 generates gradation correction image data in which the gradation data (adjustment data related to gradation) stored in the storage unit 82 is superimposed on the image data. Then, the control unit 81 outputs to the projector 21 via the driving unit 15, and the projector 21 projects the projection light L.
  • the superimposition of the image data and the gradation data need not be calculated only by the control means 81, and may be calculated by a graphic display controller different from the control means 81.
  • the storage means 82 uses a storage medium such as an EEPROM, a flash memory, and a backup RAM.
  • the storage means 82 includes image data relating to various display items relating to the vehicle traveling information, the alarm information, and the control device information displayed by the projector 21; Key data is stored in advance.
  • FIG. 4 shows the gradation data TD, which is gradation data TD related to the brightness of the first screen 30.
  • the gradation data TD is set so that the luminance of the first virtual image V1 is uniform when the user E visually recognizes the first virtual image V1 as a virtual image display.
  • the ratio of the luminance of the first projected light L1 between the adjacent portion and the separated portion on the first screen 30 is, for example, , 100: 50
  • the gradation data TD gradually changes from 50% to 100% in transmittance from the neighboring site NP to the separated site FP (the transmittance of 100% means that light is not blocked).
  • the user E visually recognizes the gradation-corrected image data obtained by synthesizing the entire white image data and the gradation data TD as the first virtual image, the proximity part NP and the separation part FP are displayed with a uniform luminance of 50:50. Is done.
  • the gradation data TD is not necessarily proportional to the stepwise change from the proximity part to the separation part.
  • the transmittance of the gradation data TD may be adjusted in accordance with the luminance unevenness of the first screen 30 and set so that display with reduced luminance unevenness is achieved on the entire surface when displaying a virtual image.
  • the gradation data TD may be stored in a rewritable state by an operation by the user E.
  • the drive unit 83 is a drive circuit that operates the electric motor 61 or displays a predetermined display on the projector 21, and is provided in each of the electric motor 61 and the projector 21. In the present embodiment, the description is simplified. To be single.
  • the control means 81 inputs various information and generates image data by performing predetermined calculation processing.
  • control means 81 projects gradation correction image data in which the gradation data TD is superimposed on the generated image data. Therefore, the viewer can clearly grasp the vehicle information by visually recognizing the display with reduced luminance unevenness.
  • the HUD device 100 includes the projector 21 that projects the display light N, the image control unit 80 that controls the projector 21, the proximity portion that is projected to the display light N and is close to the projector 21, and the projector 21.
  • the image control unit 80 includes the screen 30 disposed so as to have a separated portion away from the screen 30.
  • the screen 30 is single, and includes an inclined arrangement screen 30 that is inclined with respect to the display light N so that the projector 21 has a proximity part and a separation part from the projector 21, and the image control unit 80. Is arranged such that a single screen 30 is tilted with respect to the display light N by projecting the display light from the projector with the darkness of the proximity part to the separated part of the inclined arrangement screen 30. Even in such a case, it is possible to provide the HUD device 100 capable of suppressing display luminance unevenness.
  • the image control unit 80 projects the display light N having a lower brightness from the projector 21 toward the adjacent part of the screen 30, thereby arranging the screen 30 to be inclined with respect to the display light N. Even in such a case, it is possible to provide the HUD device 100 capable of suppressing display luminance unevenness.
  • the display luminance unevenness of the proximity portion and the separation portion of the first screen 30 is suppressed, but the first screen 30 and the second screen 40 are employed to suppress display luminance unevenness. Also good.
  • the two screens 30 and 40 are close arrangement screens in which the first screen 30 is arranged in proximity to the projector 21 corresponding to the proximity part, and the second screen 40 is from the projector 21 that is the separation part.
  • the image control unit 80 supplies the display light N having a low luminance of the first screen 30 that is the proximity screen to the second screen 40 that is the separation screen. It is to project from.
  • the HUD device 100 capable of suppressing display luminance unevenness between the screens 30 and 40 is provided. Can do.
  • the number of screens 30 and 40 is not limited to two.
  • the gradation correction image data is generated by superimposing the gradation data TD on the image data.
  • the gradation correction image data is obtained by performing arithmetic processing based on the gradation data.
  • the tone correction image data may be generated by correcting the image data in pixel units of the image data.
  • the present invention is suitable for a head-up display device having a proximity part and a separation part on a screen for projecting an image.

Abstract

L'objectif de la présente invention est de fournir un dispositif d'affichage frontal capable de supprimer une irrégularité de luminance d'affichage même lorsqu'un écran est incliné par rapport à la lumière d'affichage. L'invention concerne un dispositif d'affichage frontal qui comprend un projecteur pour projeter une lumière d'affichage N, une unité de commande d'image pour commander le projecteur, et un écran sur lequel la lumière d'affichage est projetée et qui a une partie de proximité à proximité du projecteur et une partie distante éloignée du projecteur, et dans lequel la lumière d'affichage N est projetée sur l'écran 30 pour afficher une image qui peut être visualisée sous la forme d'une image virtuelle, l'unité de commande d'image amène le projecteur à projeter la lumière d'affichage N de telle sorte que la partie de proximité de l'écran présente une luminance inférieure par rapport à la partie distante.
PCT/JP2017/044469 2016-12-20 2017-12-12 Dispositif d'affichage frontal WO2018116896A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018557691A JP7076065B2 (ja) 2016-12-20 2017-12-12 ヘッドアップディスプレイ装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016246844 2016-12-20
JP2016-246844 2016-12-20

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WO2018116896A1 true WO2018116896A1 (fr) 2018-06-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4227726A4 (fr) * 2020-10-31 2023-12-27 Huawei Technologies Co., Ltd. Affichage tête haute et procédé d'affichage tête haute

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JP2006103589A (ja) * 2004-10-07 2006-04-20 Toyota Motor Corp 車両用表示装置
JP2016107947A (ja) * 2014-12-10 2016-06-20 株式会社リコー 情報提供装置、情報提供方法及び情報提供用制御プログラム
JP2016177007A (ja) * 2015-03-18 2016-10-06 アルプス電気株式会社 画像表示装置
JP2016206289A (ja) * 2015-04-17 2016-12-08 三菱電機株式会社 車両用表示装置

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Publication number Priority date Publication date Assignee Title
JP6004706B2 (ja) 2012-04-04 2016-10-12 三菱電機株式会社 表示装置及びこれを備えたヘッドアップディスプレイシステム
JP6287406B2 (ja) 2014-03-19 2018-03-07 アイシン・エィ・ダブリュ株式会社 ヘッドアップディスプレイ装置
JP6105533B2 (ja) 2014-09-04 2017-03-29 矢崎総業株式会社 車両用投影表示装置

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Publication number Priority date Publication date Assignee Title
JP2006103589A (ja) * 2004-10-07 2006-04-20 Toyota Motor Corp 車両用表示装置
JP2016107947A (ja) * 2014-12-10 2016-06-20 株式会社リコー 情報提供装置、情報提供方法及び情報提供用制御プログラム
JP2016177007A (ja) * 2015-03-18 2016-10-06 アルプス電気株式会社 画像表示装置
JP2016206289A (ja) * 2015-04-17 2016-12-08 三菱電機株式会社 車両用表示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4227726A4 (fr) * 2020-10-31 2023-12-27 Huawei Technologies Co., Ltd. Affichage tête haute et procédé d'affichage tête haute

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JPWO2018116896A1 (ja) 2019-10-24

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