Vehicle image device having large aspect ratio using projection optical system

Abstract

The vehicle image device includes: a cover forming an appearance of an instrument panel of a vehicle; an image forming device which is disposed inside the instrument panel and forms light to one side; a screen panel that is disposed between the image forming apparatus and the cover and reflects light formed by the image forming apparatus such that an image generated by the reflected light passes through the cover; and a mirror disposed on one side of the image forming apparatus, reflecting light formed toward the one side and transmitting the light to the screen panel, the image generated by the light reflected from the screen panel may be displayed in a specific area of a windshield of a driver's seat of the vehicle such that the width in one axial direction is larger than the length in the other axial direction.

Description

Technical Field

[0001] The present specification relates to a vehicle imaging device, and more particularly to a vehicle imaging device having a large aspect ratio using a projection optical system. Background Art

[0002] A vehicle is a device that moves in a direction desired by a user who rides in it. A typical example is an automobile.

[0003] On the other hand, in order to facilitate the users who use the vehicle, the trend is to install various sensors and electronic devices, etc. In particular, in order to facilitate the user's driving, the research of vehicle driver assistance system (ADAS: Advanced Driver Assistance System) is being actively carried out. In addition, the development of autonomous vehicles is being actively carried out.

[0004] On the other hand, the vehicle display that displays various driving information of the vehicle is located below the driver's front driving field of view, which affects driving safety, i.e., rubber necking. Therefore, recently, a vehicle imaging device that ensures driving safety by realizing an image on the windshield in front of the vehicle close to the driving field of view, such as a HUD (Head up display), can be installed in the vehicle.

[0005] In addition, it is necessary to implement an infotainment device for providing personal information and personal entertainment content in the front passenger seat or rear seat of the vehicle. Therefore, it is necessary to display driving-related information in the front area of ​​the driver's seat of the vehicle or to provide a vehicle imaging device for providing personal entertainment content in the front area of ​​the front passenger seat or rear seat of the vehicle.

[0006] In order to display such driving-related information or entertainment content on a specific area of ​​the windshield in front of the vehicle, it is necessary to form a large aspect ratio with a width in one axial direction being equal to or greater than a predetermined ratio of the length in another axial direction. The problem is that it has not yet been specifically proposed what structure and at what part of the vehicle the vehicle imaging device should be provided in order to form a screen with such a large aspect ratio. Summary of the invention

[0007] Problems to be solved by the invention

[0008] The purpose of this specification is to provide a vehicle imaging device with a large aspect ratio using a projection optical system associated with the vehicle.

[0009] In addition, the present specification aims to display driving-related information in a specific area of ​​a windshield in front of a vehicle with a screen having a large aspect ratio.

[0010] In addition, the present specification aims to provide a vehicle imaging device having an optical structure and a special screen for realizing an image with a large aspect ratio using one imaging module.

[0011] In addition, the present specification aims to provide a method of realizing an image having a large aspect ratio by using one image module to form a continuous image associated with driving-related information.

[0012] In addition, an object of the present specification is to provide a small and thin vehicle imaging device.

[0013] The problems of the present invention are not limited to the problems mentioned above, and those skilled in the art can clearly understand other problems not mentioned from the following description.

[0014] Technical solutions to the problem

[0015] In order to achieve the above-mentioned problems, the vehicle imaging device of the embodiment of the present specification includes: a cover, which forms the appearance of the dashboard of the vehicle; an image forming device (PGU: Picture Generation Unit), which is arranged inside the dashboard and forms light to one side; a screen panel, which is arranged between the image forming device and the cover, and reflects the light formed by the image forming device so that the image generated by the reflected light passes through the cover; and a mirror, which is arranged on one side of the image forming device, and reflects the light formed to the one side and transmits it to the screen panel; the image generated by the light reflected from the screen panel can be displayed in a specific area of ​​the windshield of the driver's seat of the vehicle as a width in one axis direction that is greater than the length in another axis direction.

[0016] In an embodiment, the image forming device and the mirror may be arranged on the left side of the screen panel. The screen panel may be formed into an inclined structure in which a vertical distance from the screen panel to the cover decreases from the left side to the right side. The light formed by the image forming device may be reflected from the first mirror, the second mirror and the screen panel, and diffused within a specified angle range based on the vertical direction of the cover.

[0017] In an embodiment, the image forming device and the mirror may be arranged on the right side of the screen panel. The screen panel may be formed into an inclined structure in which a vertical distance from the screen panel to the cover increases from the left side to the right side. The light formed by the image forming device may be reflected from the first mirror, the second mirror and the screen panel, and diffused within a specified angle range based on the vertical direction of the cover.

[0018] In an embodiment, the mirror may include: a first mirror, which is arranged at one side of the image forming device and reflects the light formed toward the one side to change the light path; and a second mirror, which reflects the light reflected from the first mirror and transmits it to the screen panel. The side of the first mirror on which the light formed by the image forming device is incident may be tilted toward one side at a first angle based on the incident light to form a flat shape. The side of the second mirror on which the light reflected from the first mirror is incident may be tilted toward the other side at a second angle to form a curved shape. The second angle may be set to be smaller than the first angle.

[0019] In an embodiment, the screen panel may form a first width along one axis direction and a first length along another axis direction inside the instrument panel. The ratio of the first width to the first length may be formed as a first ratio. The ratio of the width to the length of the image displayed on the windshield may be formed as a second ratio. The upper end of the image displayed on the windshield may be arranged below the center line of the windshield. Both the first ratio and the second ratio may be set to be 5:1 or more.

[0020] In an embodiment, the screen panel may include: a reflective layer, wherein a plurality of patterns formed in the other axis direction are arranged on the reflective layer in a spaced manner along the one axis direction, and the reflective layer reflects light formed by the image forming device; and a diffusion layer, arranged on one side of the reflective layer, so that the light reflected from the reflective layer is diffused within a specified angle range based on the vertical direction of the cover. The plurality of patterns may be arranged such that as the vertical distance from the screen panel to the cover decreases, the spacing distance between the plurality of patterns of the reflective layer decreases.

[0021] In an embodiment, the PGU may include: a display panel; a prism, which is configured to be separated from the display panel, and a mirror and a polarizing beam splitter (PBS) are formed inside the prism; a polarizing conversion plate, which is configured to be parallel to the display panel between the display panel and the prism; and a projection lens, which is composed of a plurality of lenses configured to be separated from the prism.

[0022] In an embodiment, the display panel may include: a first area corresponding to an area where the polarization conversion plate and the mirror are configured; and a second area corresponding to an area where the PBS is configured. One end of the polarization conversion plate may correspond to one end of the display panel. The other end of the polarization conversion plate may correspond to the center of the display panel.

[0023] In an embodiment, an S wave from the first region that has passed through the polarization conversion plate may be reflected from the mirror and the PBS and incident on the projection lens. A P wave output from the second region may be incident on the projection lens through the PBS. The prism may have a first absorption layer attached to the upper portion and side surface of the prism corresponding to the first region or a second absorption layer attached to the upper portion and side surface of the prism corresponding to the second region.

[0024] In an embodiment, the PGU may include: a display panel that radiates a P-polarized light signal; a prism that is separated from the display panel, and a mirror and a half-mirror are formed inside the prism; and a projection lens that is composed of a plurality of lenses that are separated from the prism. The P-polarized light signal radiated from the first area that is one side of the display panel can be fully reflected from the mirror, reflected from the half-mirror at a specified ratio, and incident on the projection lens. The P-polarized light signal radiated from the second area that is the other side of the display panel that passes through the half-mirror can be incident on the projection lens.

[0025] In an embodiment, the PGU may include: a display panel; a lower prism, which is separated from the display panel and formed at a specified height; a prism, which is arranged on the upper part of the lower prism, and a first PBS and a second PBS are formed inside the prism; and a projection lens, which is composed of a plurality of lenses separated from the prism.

[0026] In an embodiment, the display panel may include: a first area corresponding to an area where the first PBS is configured; and a second area corresponding to an area where the second PBS is configured. The upper end of the first PBS may correspond to the center of the display panel. The lower end of the second PBS may correspond to the center of the display panel.

[0027] In an embodiment, the first PBS may be implemented by a mirror. The prism may have an absorption layer attached to the upper portion and side surface of the prism corresponding to the second region. A P wave in the optical signal output to the first region may be reflected from the mirror configured in the first region of the prism and absorbed into the absorption layer by the second PBS. An S wave in the optical signal output to the first region may be reflected from the mirror, reflected from the second PBS, and incident toward the projection lens.

[0028] In an embodiment, an S wave reflected from the second PBS in the optical signal output to the second area may be absorbed by the absorption layer, and a P wave passing through the second PBS in the optical signal output to the second area may be incident on the projection lens.

[0029] In an embodiment, the prism may have a first absorption layer attached to an upper portion and a side surface of the prism corresponding to the first region and a second absorption layer attached to an upper portion and a side surface of the prism corresponding to the second region. A P wave in an optical signal output to the first region may be absorbed into the first absorption layer by the first PBS configured in the first region. An S wave in an optical signal output to the first region may be reflected from the first PBS and the second PBS and incident toward the projection lens.

[0030] In an embodiment, the S wave reflected from the second PBS in the optical signal output to the second area may be absorbed by the second absorption layer, and the P wave passed through the second PBS in the optical signal output to the second area may be incident on the projection lens.

[0031] In an embodiment, the PGU may include: a display panel that emits an unpolarized light signal; a lower prism that is separated from the display panel and formed at a specified height; a prism that is disposed on the upper portion of the lower prism, and a mirror and a half mirror are formed inside the prism; and a projection lens that is composed of a plurality of lenses that are separated from the prism. The unpolarized light signal radiated from the first area that is one side of the display panel may be fully reflected from the mirror, then reflected from the half mirror at a specified ratio, and incident toward the projection lens. The P-polarized light signal of the remaining ratio that has passed through the half mirror in the unpolarized light signal radiated from the first area that is the other side of the display panel may be incident toward the projection lens.

[0032] In an embodiment, the PGU may further include a second polarization conversion plate, which is attached to the upper portion of the prism between the mirror and the PBS or to the upper portion of the prism between the first PBS and the second PBS to synthesize the P wave and the S wave.

[0033] In an embodiment, the vehicle imaging device may further include a processor, the processor being disposed in the vehicle and controlling data included in the optical signal output from the PGU. The processor may control the PGU so that a first data group having the form of the P wave and a second data group having the form of the S wave are alternately configured.

[0034] In an embodiment, the processor may be controlled to insert the second data of the second data group between adjacent data constituting the first data group, so that the first data group and the second data group are alternately arranged along the one-axis direction. The processor displays the image constituted by the alternately arranged first data group and second data group in the specific area.

[0035] In an embodiment, the PGU may further include glass, and the glass is configured in the first area of ​​the display panel to be tiltable between the polarization conversion plate and the prism. The processor may control the tilt angle of the glass so that the plurality of first pixels of the first data group and the plurality of second pixels of the second data group are sequentially configured.

[0036] In an embodiment, if the value of the shift of the plurality of second pixels compared to the plurality of first pixels is less than a first critical value, the processor may increase the tilt angle of the glass. If the value of the shift of the plurality of second pixels compared to the plurality of first pixels is greater than a second critical value, the processor may decrease the tilt angle of the glass. The first critical value may be set to be less than 0.5 pixels, and the second critical value may be set to be greater than 0.5 pixels.

[0037] A projector according to another aspect of the present specification includes: an image forming device, arranged inside the projector, forming light toward one side; and a processor, combined with the PGU so as to be able to operate, controlling the PGU to alternately configure the first data group and the second data group. The processor can be controlled to insert the second data of the second data group between adjacent data constituting the first data group, so that the first data group and the second data group are alternately configured along a single axis; the processor can be controlled to display an image composed of the alternately configured first data group and second data group in a specific area.

[0038] Details of other embodiments are included in the detailed description and drawings.

[0039] Effects of the Invention

[0040] The technical features of the vehicle imaging device with a large aspect ratio using a projection optical system of this specification are summarized as follows.

[0041] In addition, according to the present specification, an imaging device with a large aspect ratio for the driver can be set at a position close to the driver's driving field of view, and more information can be provided through the image with a large aspect ratio.

[0042] In addition, according to the present specification, it is possible to overcome the limitation that the continuity of the connected parts of the images in the image device implemented by connecting a plurality of image modules is reduced, thereby realizing a natural image.

[0043] In addition, according to the present specification, a continuous image associated with driving-related information can be realized in a specific area of ​​the windshield in front of the vehicle within the driver's field of vision using an image module.

[0044] In addition, according to the present specification, a vehicle imaging device having a small and thin volume can be provided using a projection optical system structure having a reflection structure and a screen panel shifted to one side or the other.

[0045] In addition, according to the present specification, an ultra short throw (UST) projection device and a special screen can be used to realize a vehicle imaging device in a thin and small volume in a limited space inside a vehicle where a steering wheel, pedals, or CQT are arranged.

[0046] The effects of the present specification are not limited to the effects mentioned above, and those skilled in the art can clearly understand other effects not mentioned through the description of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a diagram showing the appearance of a vehicle according to an embodiment of the present invention.

[0048] Figure 2 The vehicle according to the embodiment of the present invention is viewed from various external angles.

[0049] Figure 3 to Figure 4 It is a diagram showing the interior of a vehicle according to an embodiment of the present specification.

[0050] Figure 5 It is a block diagram of a vehicle for explaining the embodiment of this specification.

[0051] Figure 6a This diagram shows a configuration in which a screen having a predetermined ratio is formed in a specific area of ​​the front glass of a vehicle.

[0052] Figure 6b Indicates that it is used to implement Figure 6a A vehicle imaging device having a screen of a predetermined ratio is configured inside a dashboard of a vehicle.

[0053] Figure 7 express Figure 6bThe image forming device and a plurality of internal components of the vehicle imaging device are arranged inside a cover.

[0054] Figure 8a express Figure 7 In the vehicle imaging device, an image forming device is arranged on the left side of a screen panel.

[0055] Figure 8b express Figure 7 In the vehicle imaging device, an image forming device is arranged on the right side of a screen panel.

[0056] Figure 9a The screen panel of the vehicle imaging device described in this specification is structured to be composed of a plurality of layers.

[0057] Figure 9b This is a diagram showing the Fresnel structure of the reflective layer of the screen panel of this specification.

[0058] Fig.10a and Fig.10b A plurality of embodiments are shown in which a prism structure and a projection lens structure are arranged on the upper part of a display panel.

[0059] Fig.11a and Fig.11b Yes means Fig.10a Graph of the P-wave and S-wave optical signals in the PGU structure with single-layer and double-layer PBS structures.

[0060] Fig.11c Yes means Fig.10a Diagram of the P-polarized signal in the structure of the PGU with a mirror and a half-mirror structure.

[0061] Fig.12a and Figure 12b Yes means Fig.10b Graph of the P-wave and S-wave optical signals in the PGU structure with single-layer and double-layer PBS structures.

[0062] Fig.12c Yes means Fig.10b Diagram of the unpolarized signal in the structure of the PGU with mirror and semi-mirror structures.

[0063] Fig.13a and Fig.13b Indicated in Fig.11a and Fig.11b A second polarization conversion plate is also attached to the upper portion of the middle prism.

[0064] Fig.14a and Fig.14b Indicated in Fig.12a and Figure 12bA second polarization conversion plate is also attached to the upper portion of the middle prism.

[0065] Fig.15a 1 is a diagram comparing images generated in the first system and the second system without performing pixel reconfiguration.

[0066] Fig.15b It is a comparison Fig.15a A diagram of a plurality of screens enlarged along one axis direction in the first system and the second system.

[0067] Fig.15c The structure of a projector as an imaging device that performs pixel rearrangement is shown.

[0068] Fig.16a and Fig.16b This is a diagram comparing a plurality of structures before and after the glass is rotated in a PGU having glass that can rotate in one axis direction.

[0069] Fig.17a express Fig.16b The glass is tilted at a specified angle and the pixel adjustment principle based on this.

[0070] Fig.17b This indicates that a plurality of pixels are shifted as the glass is adjusted in one direction and rotated in another direction.

[0071] Fig.18a and Fig.18b This figure compares multiple images of various forms realized on a single panel or a double panel. DETAILED DESCRIPTION

[0072] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. Regardless of the figure numbers, the same or similar constituent elements will be marked with the same figure numbers, and repeated descriptions thereof will be omitted. The suffixes "module" and "unit" of the constituent elements used in the following description are only given or mixed in consideration of the ease of writing of the description, and they themselves do not have meanings or functions that distinguish each other. In addition, when describing the embodiments disclosed in this specification, if it is determined that the specific description of the relevant known technology may confuse the subject matter of the embodiments disclosed in this specification, its detailed description will be omitted. In addition, the accompanying drawings are only used to make the embodiments disclosed in this specification easy to understand, and it should be understood that the technical ideas disclosed in this specification are not limited by the accompanying drawings, but cover all changes, equivalents and substitutes included in the idea and technical scope of the present invention.

[0073] Terms including ordinal numbers such as first, second, etc. may be used to describe various constituent elements, but the constituent elements are not limited by the terms. The terms are only used to distinguish one constituent element from other constituent elements.

[0074] When it is mentioned that a certain component is “connected” or “linked” to another component, it should be understood that it can be directly connected or linked to the other component, or other components may exist between them. On the contrary, when it is mentioned that a certain component is “directly connected” or “directly linked” to another component, it should be understood that there are no other components between them.

[0075] Unless clearly indicated otherwise in the context, an expression in the singular includes an expression in the plural.

[0076] In the present application, it should be understood that terms such as "include" or "have" are intended to indicate the existence of the features, numbers, steps, actions, constituent elements, parts or combinations thereof described in the specification, and cannot preclude the possibility of the existence or increase of one or more other features or numbers, steps, actions, constituent elements, parts or combinations thereof.

[0077] The vehicle described in this specification may include a car and a motorcycle. In the following, the description is mainly based on the car among the vehicles.

[0078] The vehicle described in this specification may be a concept including an internal combustion engine vehicle having an engine as a power source, a hybrid vehicle having an engine and an electric motor as a power source, and an electric car having an electric motor as a power source.

[0079] In the following description, the left side of the vehicle refers to the left side in the traveling direction of the vehicle, and the right side of the vehicle refers to the right side in the traveling direction of the vehicle.

[0080] Figure 1 It is a diagram showing the appearance of a vehicle according to an embodiment of the present invention.

[0081] Figure 2 The vehicle according to the embodiment of the present invention is viewed from various external angles.

[0082] Figure 3 to Figure 4 It is a diagram showing the interior of a vehicle according to an embodiment of the present specification.

[0083] Figure 5 It is a block diagram of a vehicle for explaining the embodiment of this specification.

[0084] Reference Figures 1 to 5 The vehicle 100 may include: wheels rotated by a power source; and a steering input device 510 for adjusting the traveling direction of the vehicle 100 .

[0085] Vehicle 100 may be an autonomous vehicle.

[0086] The vehicle 100 may switch to an autonomous driving mode or a manual mode based on user input.

[0087] For example, the vehicle 100 may switch from a manual mode to an autonomous driving mode or from an autonomous driving mode to a manual mode based on user input received through the user interface device 200 .

[0088] The vehicle 100 may switch to the automatic driving mode or the manual mode based on the driving condition information. The driving condition information may be generated based on the object information provided from the object detection device 300.

[0089] For example, the vehicle 100 may switch from the manual mode to the automatic driving mode or from the automatic driving mode to the manual mode based on the driving condition information generated in the object detection device 300 .

[0090] For example, the vehicle 100 may switch from the manual mode to the automatic driving mode or from the automatic driving mode to the manual mode based on the driving condition information received through the communication device 400 .

[0091] The vehicle 100 may switch from the manual mode to the autonomous driving mode or from the autonomous driving mode to the manual mode based on information, data, or signals provided from an external device.

[0092] When the vehicle 100 is operating in the autonomous driving mode, the autonomous driving vehicle 100 may operate based on the operating system 700 .

[0093] For example, the autonomous driving vehicle 100 may operate based on information, data, or signals generated in the driving system 710 , the vehicle exit system 740 , or the parking system 750 .

[0094] In the case where the vehicle 100 operates in the manual mode, the autonomous driving vehicle 100 may receive a user input for driving through the driving operation device 500. Based on the user input received through the driving operation device 500, the vehicle 100 may operate.

[0095] The overall length refers to the length from the front to the rear of the vehicle 100, the overall width refers to the width of the vehicle 100, and the overall height refers to the length from the lower part of the wheels to the roof. In the following description, the overall length direction L may refer to the direction measured based on the overall length of the vehicle 100, the overall width direction W may refer to the direction measured based on the overall width of the vehicle 100, and the overall height direction H may refer to the direction measured based on the overall height of the vehicle 100.

[0096] like Figure 5As shown, the vehicle 100 may include a user interface device 200, an object detection device 300, a communication device 400, a driving operation device 500, a vehicle drive device 600, an operation system 700, a navigation system 770, a sensing unit 120, an interface unit 130, a memory 140, a control unit 170 and a power supply unit 190.

[0097] Depending on the embodiment, the vehicle 100 may include other components in addition to the components described in this specification, or may not include some of the components described.

[0098] The user interface device 200 is a device for communication between the vehicle 100 and the user. The user interface device 200 receives user input and can provide information generated in the vehicle 100 to the user. The vehicle 100 can implement UI (User Interfaces: User Interface) or UX (User Experience: User Experience) through the user interface device 200.

[0099] The user interface device 200 may include an input unit 210 , an internal camera 220 , a biological sensing unit 230 , an output unit 250 , and a processor 270 .

[0100] According to an embodiment, the user interface device 200 may include other components in addition to the components described, or may not include some of the components described.

[0101] The input unit 200 is used to receive information from the user. The data collected in the input unit 200 is analyzed by the processor 270 and can be processed into a control command of the user.

[0102] The input unit 200 may be disposed inside the vehicle. For example, the input unit 210 may be disposed in an area of ​​a steering wheel, an area of ​​an instrument panel, an area of ​​a seat, an area of ​​each pillar, an area of ​​a door, an area of ​​a center console, an area of ​​a headlining, an area of ​​a sun visor, an area of ​​a windshield, or an area of ​​a window.

[0103] The input unit 200 may include a voice input unit 211 , a gesture input unit 212 , a touch input unit 213 , and a mechanical input unit 214 .

[0104] The voice input unit 211 may convert the user's voice input into an electrical signal, and the converted electrical signal may be provided to the processor 270 or the control unit 170 .

[0105] The voice input unit 211 may include one or more microphones.

[0106] The gesture input unit 212 may convert the user's gesture input into an electrical signal, and the converted electrical signal may be provided to the processor 270 or the control unit 170 .

[0107] The gesture input unit 212 may include at least one of an infrared sensor and an image sensor for sensing a user's gesture input.

[0108] According to an embodiment, the gesture input unit 212 may sense a three-dimensional gesture input of a user. To this end, the gesture input unit 212 may include a light output unit that outputs a plurality of infrared lights or a plurality of image sensors.

[0109] The gesture input unit 212 may sense the user's three-dimensional gesture input by using a TOF (Time of Flight) method, a structured light method, or a disparity method.

[0110] The touch input unit 213 may convert a user's touch input into an electrical signal, and the converted electrical signal may be provided to the processor 270 or the control unit 170 .

[0111] The touch input part 213 may include a touch sensor for sensing a user's touch input.

[0112] According to an embodiment, the touch input unit 213 is integrally formed with the display unit 251, so that a touch screen can be implemented. Such a touch screen can provide an input interface and an output interface between the vehicle 100 and the user together.

[0113] The mechanical input unit 214 may include at least one of a button, a dome switch, a roller, and a roller switch. The electrical signal generated by the mechanical input unit 214 may be provided to the processor 270 or the control unit 170.

[0114] The mechanical input unit 214 may be disposed on a steering wheel, a central instrument panel, a center console, a cockpit module, a door, and the like.

[0115] The interior camera 220 may acquire an image of the interior of the vehicle. The processor 270 may sense the state of the user based on the image of the interior of the vehicle. The processor 270 may acquire the user's sight information from the image of the interior of the vehicle. The processor 270 may sense the user's gesture from the image of the interior of the vehicle.

[0116] The biometric sensing unit 230 can obtain the biometric information of the user. The biometric sensing unit 230 includes a sensor capable of obtaining the biometric information of the user, and the sensor can be used to obtain the fingerprint information, heart rate information, etc. of the user. The biometric information can be used for user authentication.

[0117] The output unit 250 is used to generate output related to vision, hearing, touch, etc.

[0118] The output portion 250 may include at least one of a display portion 251 , a sound output portion 252 , and a tactile output portion 253 .

[0119] The display unit 251 can display graphic objects corresponding to various information.

[0120] The display unit 251 may include at least one of a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display (flexible display), a three-dimensional display (3D display), and an electronic ink display (e-ink display).

[0121] The display portion 251 and the touch input portion 213 form a layer structure or are integrally formed, thereby realizing a touch screen.

[0122] The display unit 251 may be implemented by a HUD (Head up display), a CID (Center Information Display), a cluster, and / or an RSE (Rear Seat Entertainment). When the display unit 251 is implemented by a HUD, the display unit 251 has a projection module and can output information by projecting an image onto a windshield or a window.

[0123] The display unit 251 may include a transparent display. The transparent display may be attached to a windshield or a window.

[0124] The transparent display has a specified transparency and can display a specified image. In order to have transparency, the transparent display may include at least one of a transparent TFEL (Thin Film Elecroluminescent), a transparent OLED (Organic Light-Emitting Diode), a transparent LCD (Liquid Crystal Display), a transmissive transparent display, and a transparent LED (Light Emitting Diode) display. The transparency of the transparent display can be adjusted.

[0125] On the other hand, the user interface device 200 may include a plurality of display parts 251 a to 251 g .

[0126] The display unit 251 can be configured in an area of ​​the steering wheel, an area 251a, 251b, 251e of the instrument panel, an area 251d of the seat, an area 251f of each pillar, an area 251g of the door, an area of ​​the center console, an area of ​​the roof, an area of ​​the sun visor, or can be implemented in an area 251c of the windshield or an area 251h of the window.

[0127] An area 251a, 251b of the instrument panel may display information related to the driver. An area 251e of the instrument panel may be a personalized infotainment display for the passenger in the front passenger seat using a vehicle imaging device. An area 251d of the seat may be a personalized infotainment display for the RSE (Rear Seat Entertainment) using a vehicle imaging device.

[0128] The sound output unit 252 converts the electrical signal provided from the processor 270 or the control unit 170 into an audio signal and outputs the audio signal. To this end, the sound output unit 252 may include one or more speakers.

[0129] The tactile output unit 253 generates a tactile output. For example, the tactile output unit 253 can vibrate the steering wheel, the seat belt, or the seats 110FL, 110FR, 110RL, and 110RR to enable the user to recognize the output.

[0130] The processor 270 may control the overall actions of each unit of the user interface device 200 .

[0131] Depending on the embodiment, the user interface device 200 may include a plurality of processors 270 , or may not include a processor 270 .

[0132] When the user interface device 200 does not include the processor 270 , the user interface device 200 may operate under the control of the processor of another device in the vehicle 100 or the control unit 170 .

[0133] On the other hand, the user interface device 200 may be named as a vehicle display device.

[0134] The user interface device 200 can operate according to the control of the control unit 170 .

[0135] The object detection device 300 is a device for detecting an object located outside the vehicle 100 .

[0136] The object may be various objects related to the operation of the vehicle 100 .

[0137] On the other hand, the vehicle imaging device of this specification is described. In this regard, the vehicle display that displays various driving information of the vehicle is located below the driver's front driving field of view, which affects the driving safety, i.e., rubber necking. Therefore, recently, a vehicle imaging device that ensures driving safety by realizing an image on the windshield in front of the vehicle near the driving field of view, such as a HUD (Head up display), can be installed in the vehicle.

[0138] In addition, it is necessary to implement an infotainment device for providing personal information and personal entertainment content in the front passenger seat or rear seat of the vehicle. Therefore, it is necessary to display driving-related information in the front area of ​​the driver's seat of the vehicle or to provide a vehicle imaging device for providing personal entertainment content in the front area of ​​the front passenger seat or rear seat of the vehicle.

[0139] In order to display such driving-related information or entertainment content on a specific area of ​​the windshield in front of the vehicle, it is necessary to form a large aspect ratio with a width in one axial direction being equal to or greater than a predetermined ratio of the length in another axial direction. The problem is that it has not yet been specifically proposed what structure and at what part of the vehicle the vehicle imaging device should be provided in order to form a screen with such a large aspect ratio.

[0140] In order to solve this problem, the purpose of this specification is to provide a vehicle imaging device with a large aspect ratio using a projection optical system related to the vehicle. In addition, the purpose of this specification is to display driving-related information in a specific area of ​​the windshield in front of the vehicle with a screen with a large aspect ratio. In addition, the purpose of this specification is to provide a vehicle imaging device with an optical structure and a special screen that use one imaging module to realize an image with a large aspect ratio. In addition, the purpose of this specification is to provide a continuous image associated with driving-related information using one imaging module to realize an image with a large aspect ratio. In addition, the purpose of this specification is to provide a small and thin vehicle imaging device.

[0141] With reference to the accompanying drawings, a vehicle imaging device for achieving the aforementioned purpose will be described in detail. Figure 6a This diagram shows a configuration in which a screen having a predetermined ratio is formed in a specific area of ​​the front glass of a vehicle. Figure 6b Indicates that it is used to implement Figure 6a A vehicle imaging device having a screen of a predetermined ratio is configured inside a dashboard of a vehicle.

[0142] on the other hand, Figure 7 express Figure 6b The image forming device and a plurality of internal components of the vehicle imaging device are arranged inside a cover. Figure 8a express Figure 7 In the vehicle imaging device, an image forming device is arranged on the left side of a screen panel. Figure 8b express Figure 7 In the vehicle imaging device, an image forming device is arranged on the right side of a screen panel.

[0143] Reference Figure 6a , an image having a width Wa in one axis direction and a length La in another axis direction can be displayed in a specific area 251R of the windshield of the vehicle. The image may include a plurality of image areas displaying a plurality of information required for driving the vehicle. The plurality of image areas may include a first image area IR1 to a third image area IR3. A first image including vehicle-related information can be displayed in the first image area IR1 of the driver's field of view closest to the vehicle. A second image related to the vehicle's driving path can be displayed in the second image area IR2. A third image related to a map including a departure point and a destination can be displayed in the third image area IR3. According to the display of a plurality of images in the specific area 251R, the width Wa in one axis direction can be set to a specified ratio of the length La in the other axis direction, for example, more than 5 times.

[0144] Reference Figure 6a and Figure 6b, a vehicle imaging device 1000 may be arranged inside a dashboard of a vehicle. The vehicle imaging device 1000 may be arranged in a specific area inside the dashboard to prevent overlap with an area where a steering wheel and pedals are arranged. An image generated by light reflected from a screen panel 1200 constituting the vehicle imaging device 1000 may be displayed in a specific area 251R of a windshield of the vehicle. The specific area 251R may be implemented by a prescribed length La to display an image within the driver's field of vision. The distance from the center of the driver's line of sight to the center of the specific area 251R may be implemented as a prescribed distance, for example, about 1.2 m.

[0145] Reference Figures 6a to 8b The vehicle imaging device 1000 may include a cover 1010, an image forming device 1100, screen panels 1200a, 1200, and a mirror 1300. The mirror 1300 may be implemented by a curved second mirror 1320a, 1320. The mirror 1300 may also be implemented by only one of the first mirror 1310a and the second mirror 1320a. The mirror 1300 may also be implemented by only one of the first mirror 1310 and the second mirror 1320.

[0146] As another example, the mirror 1300 may include first mirrors 1310a, 1310 and second mirrors 1320a, 1320. The cover 1010 may form the appearance of a dashboard of a vehicle. The image forming device 1100, the screen panels 1200a, 1200, the first mirrors 1310a, 1310 and the second mirrors 1320a, 1320 may be disposed inside the cover 1010.

[0147] On the other hand, the cover 1010 of the vehicle imaging device 1000 of the present specification may include: a transmission area (or transparent area) that transmits a light signal including an image; and an opaque area (or opaque area) in which a plurality of internal components are arranged. Figure 7 , the cover 1010 may include an opaque area 1010a and a transparent area 1010b.

[0148] Reference Figures 6a to 8b , the opaque area 1010a may be formed in one side area and / or the other side area corresponding to the area where the image forming device 1100, the first mirror 1310, and the second mirror 1310 are configured. The transparent area 1010b may be formed corresponding to the area where the screen panel 1200 is configured. The opaque area 1010a may be formed to surround the transparent area 1010b. The image formed by reflection from the screen panel 1200 may be displayed in a specific area 251R of the windshield of the passenger seat through the transparent area 1010b of the cover 1010.

[0149] The image forming device (PGU: Picture Generation Unit) 1100 may be disposed inside the instrument panel to form light toward one side. Screen panels 1200a and 1200 may be disposed between the image forming device 1100 and the cover 1010. The screen panels 1200a and 1200 may reflect the light formed by the image forming device 1100 and allow an image generated by the reflected light to pass through the cover 1010.

[0150] A mirror 1300 may be disposed on one side or the other side of the image forming device 1100. The mirror 1300 may reflect light formed toward one side and transmit it to the screen panel 1200. The mirrors 1320a and 1320 of a curved shape may reflect light formed toward one side and transmit it to the screen panel 1200.

[0151] A first mirror 1310a, 1310 may be disposed on one side or the other side of the image forming device 1100. The first mirror 1310a, 1310 may reflect light formed toward one side or the other side of the image forming device 1100 to change the light path. A second mirror 1320a, 1320 may be disposed between the first mirror 1310a, 1310 and the screen panel 1200a, 1200. The second mirror 1320a, 1320 may reflect light reflected from the first mirror 1310a, 1310 and transmit it to the screen panel 1200a, 1200. An image generated by light reflected from the screen panel 1200a, 1200 may be displayed in a specific area 251R of the windshield of the vehicle as a width Wa in one axis direction being greater than a length La in another axis direction. The specific area 251R of the windshield may be an area of ​​the field of vision of the driver of the vehicle.

[0152] Reference Figure 8a , the image forming device 1100 and the mirror 1320a can be arranged on the left side of the screen panel 1200a. The image forming device 1100, the first mirror 1310a and the second mirror 1320a can be arranged on the left side of the screen panel 1200a. The screen panel 1200a can be formed into a tilted structure in which the vertical distance from the screen panel 1200a to the cover 1010 gradually decreases from the left side to the right side. The screen panel 1200a can be formed to have a positive slope from the left side to the right side. The light formed by the image forming device 1100 is reflected from the first mirror 1310a, the second mirror 1320a and the screen panel 1200a, and diffuses within a specified angle range based on the vertical direction of the cover 1010.

[0153] Reference Figure 7 and Figure 8b, the image forming device 1100 and the mirror 1320 may be arranged on the right side which is the other side of the screen panel 1200. The image forming device 1100, the first mirror 1310 and the second mirror 1320 may be arranged on the right side which is the other side of the screen panel 1200. The screen panel 1200 may be formed to have a negative slope from the left side to the right side. The screen panel 1200 may be formed to have an inclined structure in which the vertical distance from the screen panel 1200 to the cover 1010 gradually increases from the left side to the right side. The light formed at the image forming device 1100 may be reflected from the first mirror 1310, the second mirror 1320 and the screen panel 1200, and diffused within a prescribed angle range with the vertical direction of the cover 1010 as a reference.

[0154] Refer to Figures 6 to Figure 8b , the screen panels 1200a, 1200 may form a first width W1 along one axis direction and a first length L1 along another axis direction inside the instrument panel. The ratio of the first width W1 in one axis direction to the first length L1 in the other axis direction may be formed as a first ratio. The ratio of the width Wa to the length La of the image displayed on the windshield may be formed as a second ratio. The upper end of the image displayed on the windshield may be arranged at a lower portion than the center line of the windshield. The first ratio and the second ratio may be set to be 5:1 or more.

[0155] On the other hand, in the vehicle imaging device of the present specification, the screen panel may be composed of a plurality of layers. Figure 9a The screen panel of the vehicle imaging device described in this specification is structured to be composed of a plurality of layers.

[0156] Reference Figures 7 to 9a (a), in the reflective layer 1210 of the screen panel 1200, the plurality of patterns 1212 may be arranged separately. The plurality of patterns 1212 of the reflective layer 1210 may constitute a part of an ellipse formed in one axis and another axis direction. The plurality of patterns 1212 of the reflective layer 1210 may be arranged separately along another axis direction.

[0157] Reference Figures 7 to 9a (b), the screen panel 1200 may include a reflective layer 1210 and a diffusion layer 1220. The reflective layer 1210 is formed as a Fresnel structure, which may also be referred to as a Fresnel layer. The plurality of patterns formed in the reflective layer 1210 in another axial direction may be arranged spaced apart along one axial direction. The diffusion layer 1220 may be arranged on one side of the reflective layer 1210. The back side of the diffusion layer 1220 may be attached to one side of the reflective layer 1210.

[0158] Figure 9b This is a diagram showing the Fresnel structure of the reflective layer of the screen panel of this specification. Figure 9b (a) shows a cross-sectional view of the reflective layer 1210 of the screen panel. Figure 9b (a), the reflective layer 1210 of the screen panel may be formed to a specified depth Dp. The reflective layer 1210 may include a first pattern 1211 in the first region 1210-R1 and a second pattern 1212 in the second region 1210-R2. The first pattern 1211 may be formed as a metal pattern to reflect light. The second pattern 1212 may be formed as a metal pattern or a non-metal pattern.

[0159] Reference Figures 7 to 9b , light incident from the mirror 1300 toward a desired direction can be reflected from the first pattern 1211. On the contrary, light incident from another undesired direction can be absorbed by the second pattern 1212 formed as a non-metallic pattern. Therefore, light incident from another undesired direction is not reflected from the reflective layer 1210 of the screen panel, thereby being able to improve the quality of an image displayed on the windshield.

[0160] In the first region 1210-R1, the reflective layer 1210 may be formed into a first pattern 1211 having a first slope angle. In the second region 1210-R2, the reflective layer 1210 may be formed into a second pattern 1212 having a second slope angle greater than the first slope angle. The reflective layer 1210 may be formed into a structure in which the first pattern 1211 of the first region 1210-R1 and the second pattern 1212 of the second region 1210-R2 are repeated. Figure 7 , Fig.10a as well as Fig.10b The plurality of patterns may be configured such that as a vertical distance from the screen panel 1200 to the cover 1010 gradually decreases, a separation distance between the plurality of patterns 1211 and 1212 of the reflective layer 1210 decreases.

[0161] The first pattern 1211 may be formed in a prescribed straight line shape or a parabola shape.

[0162] Figure 9b (b) shows the elliptical structures of the upper and lower surfaces of the reflective layer 1210 of the screen panel and the second pattern 1212 on the side. Figure 9b (b), the first boundary region 1211b formed on the upper surface of the reflective layer 1210 may be referred to as a peak structure. The first boundary region 1211b may be formed as an elliptical structure. The first boundary region 1211b formed by the elliptical structure may be formed as a peak structure. p 2 x 2 +a p 2 y 2 -a p2 b p 2 =0. In this regard, a p is the x value at y=0 of the peak, b p is the y value at x=0 of the peak. The third metal pattern 1213 formed on the lower surface may be referred to as a valley structure. The second boundary region 1212b may also be formed as an elliptical structure. The second boundary region 1212b formed by the elliptical structure may be formed as b v 2 x 2 +a v 2 y 2 -a v 2 b v 2 =0. In this regard, a v is the x value at y=0 in the valley, b v is the y value at x=0 in the valley.

[0163] Reference Figures 6a to 9b , the reflective layer 1210 may be formed with a plurality of patterns 1211 to reflect the light formed in the image forming device 1100. The cross section of the plurality of patterns 1211 may be in the shape of a straight line or a parabola, and the front side may be formed in an elliptical shape. The diffusion layer 1220 may be disposed on one side of the reflective layer 1210, and the light reflected from the reflective layer 1210 may be diffused within a specified angle range based on the vertical direction of the cover 1010. As the vertical distance from the screen panel 1200 to the cover 1010 decreases, the lengths L1a, L1b, and L1c of the plurality of patterns 1211 of the reflective layer 1210 in one axis direction decrease to form the plurality of patterns 1211. As the vertical distance from the screen panel 1200 to the cover 1010 decreases, the first inclination angle of the plurality of patterns 1211 of the reflective layer 1210 increases.

[0164] The reflective layer 1210 may include a plurality of first patterns 1211 and a plurality of second patterns 1212. The plurality of first patterns 1211 may be formed in a straight line or parabola shape having a first inclination angle in cross section and an elliptical shape in front to reflect light. A plurality of second patterns 1212 may be arranged between the plurality of first patterns 1211. The plurality of second patterns 1212 may be formed in a straight line or parabola shape having a second inclination angle greater than the first inclination angle of the plurality of first patterns 1211. The length of the plurality of first patterns 1211 of the reflective layer 1210 of one side area of ​​the image forming device 1100 is formed to be longer than the length of the plurality of first patterns 1211 of the reflective layer 1210 of the other side area.

[0165] On the other hand, in the vehicle imaging device of the present specification, the image forming device (PGU) can form an image through a prism structure and a projection lens structure arranged on the front of the display panel and display it on a specific area of ​​the windshield. In this regard, Fig.10a and Fig.10b A plurality of embodiments are shown in which a prism structure and a projection lens structure are arranged on the upper part of the display panel.

[0166] Fig.11a and Fig.11b Yes means Fig.10a Graph of the P-wave and S-wave optical signals in the PGU structure with single-layer and double-layer PBS structures. Fig.11c Yes means Fig.10a Diagram of the P-polarized signal in the structure of the PGU with a mirror and a half-mirror structure.

[0167] Reference Figures 10a to 11c , the image forming unit (PGU) 1100 may include a display panel 1110, a prism 1120, a polarization conversion plate 1130, and a projection lens 1150. The display panel 1110 may be formed of an LCD structure. The prism 1120 may be spaced apart from the display panel 1110.

[0168] Reference Fig.10a and Fig.11a The prism 1120 may have a mirror 1121 and a polarizing beam splitter (PBS) 1122 formed therein. Fig.11b , the prism 1120 may have a first PBS 1122 a and a second PBS 1122 formed therein.

[0169] Reference Figures 10a to 11b A polarization conversion plate 1130 may be disposed between the display panel 1110 and the prism 1120 in parallel with the display panel 1110. The polarization conversion plate 1130 may be formed of a half-wave plate. The projection lens 1150 may be formed of a plurality of lenses disposed apart from the prism 1120.

[0170] The display panel 1110 may include a first region R1p and a second region R2p. The first region R1p may correspond to a region where the polarization conversion plate 1130 and the mirror 1121 (or the first PBS 1122a) are configured. The second region R2p may correspond to a region where the PBS 1122 is configured. One end of the polarization conversion plate 1130 may correspond to one end of the display panel 1110. The other end of the polarization conversion plate 1130 may correspond to the center of the display panel 1110.

[0171] The S wave from the first region R1p that has passed through the polarization conversion plate 1130 may be reflected from the mirror 1121 (or the first PBS 1122a) and the PBS 1122 and incident toward the projection lens 1150. The P wave output from the second region R2p may be incident toward the projection lens 1150 through the PBS 1122. The prism 1120 may have a first absorption layer 1161 attached to the upper portion and the side surface of the prism 1120 corresponding to the first region R1p. The prism 1120 may have a second absorption layer 1162 attached to the upper portion and the side surface of the prism 1120 corresponding to the second region R2p. Ends of the first absorption layer 1161 and the second absorption layer 1162 may extend to a position where the upper end portions of the mirror 1121 (or the first PBS 1122a) and the PBS 1122 are formed. Thus, a first length of a side surface portion of the first absorption layer 1161 may be formed to be longer than a second length of a side surface portion of the second absorption layer 1162.

[0172] Reference Fig.10a and Fig.11c The prism 1120 may have a mirror 1121 and a half mirror 1121b formed therein. The mirror 1121 may be formed of a full mirror that reflects all optical signals. The half mirror 1121b may be configured to reflect optical signals of a specified ratio (e.g., 50%). The half mirror 1121b may reflect optical signals of a specified range and allow optical signals of the remaining range to pass.

[0173] The display panel 1110 may radiate a P-polarized signal. The P-polarized signal radiated from the first region R1p, which is one side of the display panel 1110, may be completely reflected from the mirror 1121, reflected from the half mirror 1121b at a prescribed ratio, and incident toward the projection lens 1150. The remaining ratio of the P-polarized signal that has passed through the half mirror 1121 may be reflected from the absorption layer 1162. The P-polarized signal radiated from the second region R2p of the display panel 1110 may be reflected from the half mirror 1121 at a prescribed ratio and reflected from the absorption layer 1162. The remaining ratio of the P-polarized signal radiated from the second region R2p, which is the other side of the display panel 1110, that has passed through the half mirror 1121 may be incident toward the projection lens 1150.

[0174] Fig.12a and Figure 12b Yes means Fig.10b Graph of the P-wave and S-wave optical signals in the PGU structure with single-layer and double-layer PBS structures. Fig.12c Yes means Fig.10b Diagram of the unpolarized signal in the structure of the PGU with mirror and semi-mirror structures.

[0175] Reference Fig.10b , Figures 12a to 12c, the image forming device (PGU) 1100 may include a display panel 1110b, a lower prism 1120a, a prism 1120, and a projection lens 1150. The display panel 1110b may be formed as a DM or LCos (LiquidCrstal on Silicon) structure. The lower prism 1120a may be configured to be separated from the display panel 1110 and formed to a specified height. The lower prism 1120a may be composed of a TIR (Total Internal Reflection) prism. The prism 1120 may be configured on the upper part of the lower prism 1120a. The prism 1120 may have a first PBS 1122a and a second PBS 1122b formed therein. The projection lens 1150 may be composed of a plurality of lenses configured to be separated from the prism 1120.

[0176] The display panel 1110b may include a first region R1p and a second region R2p. The first region R1p may correspond to a region where the first PBS 1122a is configured. The second region R2p may correspond to a region where the second PBS 1122b is configured. The upper end of the first PBS 1122a may correspond to the center of the display panel 1110b. The lower end of the second PBS 1122b may correspond to the center of the display panel 1110b.

[0177] Reference Fig.10b and Fig.12a , the first PBS may be implemented by the mirror 1121. Therefore, the mirror 1121 and the second PBS 1122b may be formed inside the prism 1120. The prism 1120 may have an absorption layer 1162 attached to the upper portion and the side surface of the prism 1120 corresponding to the second region R2p. The P wave in the optical signal output to the first region R1p may be reflected from the mirror 1121 configured in the first region R1p of the prism 1120 and absorbed into the absorption layer 1162 by the second PBS 1122b. The S wave in the optical signal output to the first region R1p may be reflected from the mirror 1121 and reflected from the second PBS 1122b and incident toward the projection lens 1150.

[0178] The S wave reflected from the second PBS 1122b among the optical signals output to the second region R2p may be absorbed by the absorption layer 1162. The P wave that passes through the second PBS 1122b among the optical signals output to the second region R2p may be incident toward the projection lens 1150.

[0179] Reference Fig.10b and Figure 12b, the prism 1120 may have a first absorption layer 1161 and a second absorption layer 1162. The first absorption layer 1161 may be attached to the upper portion and the side surface of the prism 1120 corresponding to the first region R1p. The second absorption layer 1162 may be attached to the upper portion and the side surface of the prism 1120 corresponding to the second region R2p. The P wave in the optical signal output to the first region R1p may be absorbed by the first absorption layer 1161 formed at the upper portion of the prism 1120 through the first PBS 1122a configured in the first region R1p. The S wave in the optical signal output to the first region R1p may be reflected from the first PBS 1122a and the second PBS 1122b and incident toward the projection lens 1150.

[0180] The S wave reflected from the second PBS 1122b among the optical signals output to the second region R2p may be absorbed by the second absorption layer 1162. The P wave that passes through the second PBS 1122b among the optical signals output to the second region R2p may be incident toward the projection lens 1150.

[0181] Reference Fig.10b and Fig.12c The prism 1120 may have a mirror 1121 and a half mirror 1121b formed therein. The mirror 1121 may be formed of a full mirror that reflects all optical signals. The half mirror 1121b may be configured to reflect optical signals of a specified ratio (e.g., 50%). The half mirror 1121b may reflect optical signals of a specified range and allow optical signals of the remaining range to pass.

[0182] The display panel 1110 may radiate an unpolarized signal. The unpolarized signal radiated from the first region R1p, which is one side of the display panel 1110, may be completely reflected from the mirror 1121, reflected from the half mirror 1121b at a prescribed ratio, and incident toward the projection lens 1150. The remaining ratio of the unpolarized signal that has passed through the half mirror 1121 may be reflected from the absorption layer 1162. The unpolarized signal radiated from the second region R2p of the display panel 1110 may be reflected from the half mirror 1121 at a prescribed ratio and reflected from the absorption layer 1162. The remaining ratio of the unpolarized signal that has passed through the half mirror 1121 among the unpolarized signals radiated from the second region R2p, which is the other side of the display panel 1110, may be incident toward the projection lens 1150.

[0183] On the other hand, in the vehicle imaging device of the present specification, a second polarization conversion plate may be attached to the upper end of the prism of the image forming unit (PGU). Fig.13a and Fig.13b express Fig.11a and Fig.11b A second polarization conversion plate is attached to the upper part of the prism. Fig.14a and Fig.14bIndicated in Fig.12a and Figure 12b A second polarization conversion plate is also attached to the upper portion of the middle prism.

[0184] Reference Figures 13a to 14b PGU1100 may further include a second polarization conversion plate 1165. Fig.13a and Fig.14a The second polarization conversion plate 1165 may be attached to the upper portion between the mirror 1121 and the PBS 1122 of the prism 1120. The second polarization conversion plate 1165 may be configured to synthesize the P wave reflected from the mirror 1121 and the PBS 1122 and the S wave passed through the PBS 1122. The second polarization conversion plate 1165 may be implemented by a QWP (Quarter-Wave Plate) or an HWP (Half-Wave Plate).

[0185] One end of the second polarization conversion plate 1165 may be disposed at a position corresponding to the upper end of the mirror 1121. The other end of the second polarization conversion plate 1165 may be disposed at a position corresponding to the upper end of the PBS 1122. The other end of the second polarization conversion plate 1165 may be disposed at a position of the absorption layer 1162 corresponding to the end formed on the upper portion of the prism 1120.

[0186] Reference Fig.13b and Fig.14b , the second polarization conversion plate 1165 may be attached to the upper portion between the first PBS 1122a and the second PBS 1122b of the prism 1120. The second polarization conversion plate 1165 may be configured to synthesize the P wave reflected from the first PBS 1122a and the second PBS 1122b and the S wave passing through the second PBS 1122b. One end of the second polarization conversion plate 1165 may be arranged at a position corresponding to the upper end of the first PBS 1122a. One end of the second polarization conversion plate 1165 may be arranged at a position corresponding to the end formed at the upper portion of the prism 1120 of the first absorption layer 1161. The other end of the second polarization conversion plate 1165 may be arranged at a position corresponding to the upper end of the second PBS 1122b. The other end of the second polarization conversion plate 1165 may be arranged at a position corresponding to the end formed at the upper portion of the prism 1120 of the second absorption layer 1162.

[0187] On the other hand, the processor of the vehicle having the vehicle imaging device of the present specification can control the data included in the optical signal output from the image output device (PGU). In this regard, Fig.15a 1 is a diagram comparing images generated in the first system and the second system without performing pixel reconfiguration. Fig.15b It is a comparison Fig.15aA diagram of a plurality of screens enlarged along one axis direction in the first system and the second system.

[0188] Reference Fig.15a (a) The first image generated in the first system without performing pixel rearrangement may be composed of a plurality of columns. The first image composed of a plurality of columns may form a first width along one axis direction and a first length along another axis direction.

[0189] Reference Fig.15a (b), the second image generated in the second system in which pixel reconfiguration is performed may be composed of a plurality of columns. The second image composed of a plurality of columns may be composed of a first data group and a second data group. The first data group may form a first width along one axis and a first length along another axis. The second data group may also form a first width along one axis and a first length along another axis. In connection with this, pixel reconfiguration may be performed in a state where the starting point of the first data group and the starting point of the second data group are inconsistent.

[0190] Reference Fig.15b (a), the width of the first image generated in the first system that does not perform pixel reconfiguration can be increased along one axis so that it is displayed in a specific area of ​​the windshield of the vehicle. Therefore, the first image whose width is stretched along one axis may have a reduced resolution in the horizontal axis direction. The stretched first image can form a second width along one axis and a first length along another axis. The stretched second width can be set to about twice the first width.

[0191] Reference Fig.15b (b), the first data group and the second data group of the second image generated in the second system performing pixel reconfiguration can be alternately configured. In this regard, pixel alignment can be performed after performing pixel reconfiguration. As pixel alignment is performed, the starting point of the first data group and the starting point of the second data group can be aligned. As pixel reconfiguration and pixel alignment are performed, the first data group and the second data group of the second image can be alternately configured in an aligned state.

[0192] Reference Figure 5 , Figures 10a to 15b , the processor 170 , 270 provided in the vehicle can control the data included in the optical signal output from PGU 1100 .

[0193] The processor 170, 270 may be provided in the vehicle to control the data included in the optical signal output from the PGU 1100. The processor 170, 270 may control the PGU 1100 so that the first data group having the P wave form and the second data group having the S wave form are alternately arranged. Therefore, the second image in which the first data group and the second data group are alternately arranged may form a second width along one axis direction and a first length along another axis direction. Even if the width increases along one axis direction, as the first data group and the second data group are alternately arranged, the second image may maintain the resolution in the horizontal axis direction.

[0194] The processor 170, 270 can be controlled to insert the second data of the second data group between adjacent data constituting the first data group, so that the first data group and the second data group are alternately arranged along a one-axis direction. The processor 170, 270 can display an image consisting of the alternately arranged first data group and the second data group in a specific area of ​​the windshield.

[0195] On the other hand, the imaging device for performing pixel reconfiguration of the present specification can be implemented by a projector. In this regard, Fig.15c The structure of a projector as an imaging device that performs pixel reconfiguration is shown. Fig.15c The projector 2000 may include an image forming device (PGU: Picture Generation Unit) 1100 and a processor 170. The projector 2000 may also include Figures 7 to 9b The cover 1010, the screen panels 1200a, 1200 and the mirror 1300. Figures 10a to 14b As shown, the projector 2000 may include display panels 1110 , 1110 b , prisms 1120 , 1120 a , a polarization conversion plate 1130 , glass 1140 , and a projection lens 1150 .

[0196] The PGU 1100 may be arranged inside the projector 2000 to form light to one side or the other side. The processor 170 may be combined with the PGU 1100 to be able to operate. The processor 170 may control the PGU 1100 so that the first data group and the second data group are alternately arranged. The first data group and the second data group may have the form of a P wave and an S wave, respectively, but are not limited thereto.

[0197] The processor 170 can be controlled to insert the second data of the second data group between adjacent data constituting the first data group, so that the first data group and the second data group are alternately arranged along an axis direction. The image composed of the alternately arranged first data group and the second data group can be controlled to be displayed in a specific area of ​​the screen.

[0198] The glass 1140 of the PGU 1100 can be configured to be tilted between the polarization conversion plate 1130 and the prism 1120 in the first area of ​​the display panel 1110. The processor 170 can control the tilt angle of the glass 1140 so that the plurality of first pixels of the first data group and the plurality of second pixels of the second data group are arranged in sequence. If the value of the shift of the plurality of second pixels compared to the plurality of first pixels is below the first critical value, the processor 170 can increase the tilt angle of the glass 1140. If the value of the shift of the plurality of second pixels compared to the plurality of first pixels is above the second critical value, the processor 170 can reduce the tilt angle of the glass 1140. The first critical value can be set to be less than 0.5 pixels, and the second critical value can be set to be greater than 0.5 pixels, but is not limited thereto.

[0199] On the other hand, in the image forming unit (PGU) of the vehicle imaging device of the present specification, a glass capable of adjusting the angle is arranged in the lower area of ​​the prism, so that a plurality of pixels can be shifted. Fig.16a and Fig.16b This is a diagram comparing a plurality of structures before and after the glass is rotated in a PGU having glass that can rotate in one axis direction.

[0200] Fig.17a express Fig.16b The glass is tilted at a specified angle and the pixel adjustment principle based on this. Fig.17b This indicates that a plurality of pixels are shifted as the glass is adjusted in one direction and rotated in another direction.

[0201] Reference Fig.16a (a), the PGU 1100 may include a display panel 1110, a prism 1120, a polarization conversion plate 1130, and a glass 1140. The glass 1140 may be horizontally disposed between the polarization conversion plate 1130 and the prism 1120 in the first region R1p of the display panel 1110.

[0202] Reference Fig.16a (b), the P wave from the first region R1p that has passed through the polarization conversion plate 1130 and the glass 1140 may be reflected from the mirror 1121 and the PBS 1122 and transmitted to the second region Rp2. The S wave that has passed through the PBS 1122 is transmitted to the second region Rp2.

[0203] Reference Fig.16a As shown in FIG. 16c(a), before the glass 1140 is rotated (tilted), the plurality of first pixels Px1 of the first data group and the plurality of second pixels Px2 of the second data group may overlap in one axis and / or another axis direction or be separated by a value within a critical value.

[0204] Reference Fig.16b (a), PGU 1100 may include a display panel 1110, a prism 1120, a polarization conversion plate 1130, and a glass 1140. Glass 1140 may be tilted (adjusted) at a prescribed angle relative to a horizontal plane between the polarization conversion plate 1130 and the prism 1120 in a first region R1p of the display panel 1110.

[0205] Reference Fig.16b (b), the P wave from the first region R1p that has passed through the polarization conversion plate 1130 and the glass 1140 may be reflected from the mirror 1121 and the PBS 1122 and transmitted to the second region Rp2. The S wave that has passed through the PBS 1122 is transmitted to the second region Rp2. As the glass 1140 is tilted (adjusted) by a specified angle relative to the horizontal plane, a phase difference may occur between the P wave and the S wave.

[0206] Fig.17a (a) shows a structure in which the glass 1140 is inclined at a predetermined angle. Fig.17a (b) represents a plurality of pixels of a data group related to the light signal passing through the glass 1140 within a predetermined area Rc with the center point of the glass 1140 as a reference.

[0207] Reference Fig.16b and Fig.17a (a), the glass 1140 may be formed to a predetermined thickness (eg, 0.2 mm). The glass 1140 may be tilted (adjusted) to a predetermined angle (eg, 3.3°) relative to a horizontal plane. Figure 16b to Figure 17a (b), the intervals between pixels can be separated by a first interval (e.g., 7.7 um). As the glass 1140 tilts at a specified angle (e.g., 3.3°) relative to the horizontal plane, the pixel position can be shifted to a second interval (e.g., 3.35 um) by sequential pixel shift. As the glass 1140 tilts at a specified angle, the P-wave signal and the S-wave signal passing through the glass 1140 can be shifted to a second interval.

[0208] Reference Fig.16b and Fig.17b As the glass 1140 rotates (tilts), a shift may occur or the shift may be adjusted between the plurality of first pixels Px1 of the first data group associated with the P wave and the plurality of second pixels Px2 of the second data group associated with the S wave.

[0209] Reference Figure 5 , Figures 10a to 17b The processors 170 and 270 may control the tilt angle of the glass 1140 so that the plurality of first pixels Px1 of the first data group and the plurality of second pixels Px2 of the second data group are sequentially arranged.

[0210] If the value of the shift of the plurality of second pixels Px2 compared to the plurality of first pixels Px1 is below the first critical value, the processor 170, 270 can control the tilt angle of the glass 1140 to increase. If the value of the shift of the plurality of second pixels Px2 compared to the plurality of first pixels Px1 is above the second critical value, the processor 170, 270 can control the tilt angle of the glass 1140 to decrease. The first critical value can be set to be less than 0.5 pixels, and the second critical value can be set to be greater than 0.5 pixels.

[0211] On the other hand, the image displayed on a specific area of ​​the windshield by the vehicle imaging device that realizes pixel reconfiguration in this specification can be realized by a WPD (Wide Panel Display) structure in which the width in one axis direction is greater than a predetermined ratio of the length in another axis direction. In this regard, Fig.18a and Fig.18b This diagram compares multiple images realized in various forms on a single-panel or double-panel board.

[0212] Reference Fig.18a (a), the first image consisting of the first image area IR1 to the third image area IR3 can be displayed on a single panel. The first image area IR1 to the third image area IR3 can be implemented by a plurality of virtual image areas displayed on the single panel, rather than physically separated areas. The single panel can be implemented by a WVGA panel, as an example, it can be implemented by an aspect ratio of 864x480, but is not limited to this. The first image can be displayed with a resolution of 850x85, but is not limited to this. The first image can be displayed with a resolution of H: 40.0pixel / ° and V: 39.6pixel / ° in the horizontal and vertical axis directions, thereby having a low H / V resolution, but is not limited to this.

[0213] Reference Fig.18a (b), the second image composed of the first image area IR1 to the third image area IR3 can be implemented in a single panel in an H-compression form in the horizontal axis direction. The first image can be displayed at a resolution of 850x170, but is not limited to this. The first image can be displayed at a resolution of H: 40.0pixel / ° and V: 79.1pixel / ° in the horizontal and vertical axis directions, thereby still having a low H resolution, but is not limited to this.

[0214] Reference Fig.18b, the third image composed of the first image area IR1 to the third image area IR3 can be implemented on a double panel. The first image area IR1 and a portion of the second image area IR2 can be displayed in the first panel area PR1. The remaining portion of the second image area IR2 and the third image area IR3 can be displayed in the second panel area PR2. The third image can be displayed with a resolution of 850x170+850x170=1700x170, but is not limited to this. The third image can have a resolution of H: 80.0pixel / ° and V: 79.1pixel / ° in the horizontal and vertical axis directions, but is not limited to this. However, there are problems such as increased cost, increased volume, and image continuity caused by having two panels.

[0215] The above is a description of the vehicle imaging device with a large aspect ratio using a projection optical system of the present specification. The technical features of the vehicle imaging device with a large aspect ratio using a projection optical system of the present specification are summarized as follows, but are not limited thereto.

[0216] In addition, according to the present specification, an imaging device with a large aspect ratio for the driver can be set at a position close to the driver's driving field of view, and more information can be provided through the image with a large aspect ratio.

[0217] In addition, according to the present specification, it is possible to overcome the limitation that the continuity of the connected parts of the images in the image device implemented by connecting a plurality of image modules is reduced, thereby realizing a natural image.

[0218] In addition, according to the present specification, a continuous image associated with driving-related information can be realized in a specific area of ​​the windshield in front of the vehicle within the driver's field of vision using an image module.

[0219] In addition, according to the present specification, a vehicle imaging device having a small and thin volume can be provided using a projection optical system structure having a reflection structure and a screen shifted to one side or the other.

[0220] In addition, according to the present specification, an ultra short throw (UST) projection device and a special screen can be used to realize a vehicle imaging device in a thin and small volume in a limited space inside a vehicle where a steering wheel, pedals, or CQT are arranged.

[0221] The effects of the present specification are not limited to the effects mentioned above, and those skilled in the art can clearly understand other effects not mentioned through the description of the claims.

[0222] The present invention described above can be implemented by a computer-readable code in a medium storing a program. The medium that a computer can read includes all kinds of storage devices that store data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. In addition, the computer may include a processor or a control unit. Therefore, the above detailed description should not be interpreted as limiting in all aspects, but should be considered as exemplary. The scope of the present invention should be determined by the reasonable interpretation of the attached claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims

1. A vehicle imaging device, wherein: include: a cover, forming the appearance of the instrument panel of the vehicle; An image forming device is arranged inside the instrument panel and forms light toward one side; a screen panel disposed between the image forming device and the cover, reflecting light formed by the image forming device so that an image generated by the reflected light passes through the cover; as well as a mirror, arranged at one side of the image forming device, reflecting the light formed toward the one side and transmitting the light to the screen panel; The image generated by the light reflected from the screen panel is displayed in a specific area of ​​the windshield of the driver's seat of the vehicle so that the width in one axis direction is greater than the length in another axis direction.

2. The vehicle imaging device according to claim 1, wherein: The image forming device and the mirror are arranged on the left side of the screen panel; The screen panel is formed into an inclined structure in which a vertical distance from the screen panel to the cover decreases from the left side to the right side; The light formed in the image forming device is reflected from the first mirror, the second mirror, and the screen panel, and is diffused within a predetermined angle range with reference to a vertical direction of the cover.

3. The vehicle imaging device according to claim 1, wherein: The image forming device and the mirror are arranged on the right side of the screen panel; The screen panel is formed into an inclined structure in which a vertical distance from the screen panel to the cover increases from the left side to the right side; The light formed in the image forming device is reflected from the first mirror, the second mirror, and the screen panel, and is diffused within a predetermined angle range with reference to a vertical direction of the cover.

4. The vehicle imaging device according to claim 1, wherein: The mirror comprises: a first mirror disposed at one side of the image forming device and reflecting light formed toward the one side to change a light path; and a second mirror, reflecting the light reflected from the first mirror and transmitting it to the screen panel; A surface of the first mirror on which the light formed by the image forming device is incident is tilted to one side at a first angle based on the incident light and formed into a flat shape; A surface of the second mirror on which the light reflected from the first mirror is incident is tilted to the other side at a second angle to form a curved surface shape; The second angle is smaller than the first angle.

5. The vehicle imaging device according to claim 2, wherein: The screen panel forms a first width along one axis direction and a first length along another axis direction inside the instrument panel; A ratio of the first width to the first length forms a first ratio; A ratio of the width to the length of the image displayed on the windshield is formed as a second ratio; An upper end of the image displayed on the windshield is arranged below a center line of the windshield; The first ratio and the second ratio are both greater than 5:

1.

6. The vehicle imaging device according to claim 5, wherein: The screen panel comprises: a reflective layer, wherein a plurality of patterns formed in the other axis direction are arranged on the reflective layer at intervals along the one axis direction to reflect light formed in the image forming device; and a diffusion layer disposed on one side of the reflection layer so that light reflected from the reflection layer is diffused within a predetermined angle range based on a vertical direction of the cover; The plurality of patterns are configured such that as a vertical distance from the screen panel to the cover decreases, a spacing distance between the plurality of patterns of the reflective layer decreases.

7. The vehicle imaging device according to claim 1, wherein: The image forming device comprises: Display panel; A prism, arranged apart from the display panel, wherein a mirror and a polarizing beam splitter are formed inside the prism; a polarization conversion plate, arranged between the display panel and the prism and parallel to the display panel; and The projection lens is composed of a plurality of lenses arranged apart from the prism.

8. The vehicle imaging device according to claim 7, wherein: The display panel comprises: A first area corresponding to an area where the polarization conversion plate and the mirror are arranged; and A second region corresponding to a region where the polarizing beam splitter is disposed; The S wave that has passed through the polarization conversion plate from the first region is reflected from the mirror and the polarization beam splitter and is incident toward the projection lens; The P wave output from the second region passes through the polarization beam splitter and is incident on the projection lens; The prism has a first absorption layer attached to an upper portion and a side surface of the prism corresponding to the first region or a second absorption layer attached to an upper portion and a side surface of the prism corresponding to the second region.

9. The vehicle imaging device according to claim 1, wherein: The image forming device comprises: Display panel, radiating P polarized signal; a prism, arranged to be separated from the display panel, wherein a mirror and a half mirror are formed inside the prism; and A projection lens, composed of a plurality of lenses arranged apart from the prism; The P-polarized light signal radiated from the first area on one side of the display panel is completely reflected from the mirror, then reflected from the half mirror at a specified ratio, and incident on the projection lens; A remaining ratio of the P-polarized light signal radiated from the second area on the other side of the display panel that has passed through the half mirror is incident on the projection lens.

10. The vehicle imaging device according to claim 1, wherein: The image forming device comprises: Display panel; A lower prism is disposed apart from the display panel and formed at a predetermined height; a prism disposed on an upper portion of the lower prism, wherein a first polarizing beam splitter and a second polarizing beam splitter are formed inside the prism; and The projection lens is composed of a plurality of lenses arranged apart from the prism.

11. The vehicle imaging device according to claim 10, wherein: The display panel comprises: A first region corresponding to a region where the first polarizing beam splitter is disposed; and A second region, corresponding to a region where the second polarizing beam splitter is disposed; The upper end portion of the first polarizing beam splitter corresponds to the center of the display panel; A lower end portion of the second polarization beam splitter corresponds to a center of the display panel.

12. The vehicle imaging device according to claim 11, wherein: The first polarizing beam splitter is implemented by a mirror; The prism has an absorption layer attached to the upper portion and side surfaces of the prism corresponding to the second region; A P wave in the optical signal output to the first region is reflected from the mirror disposed in the first region of the prism and absorbed into the absorption layer through the second polarization beam splitter; The S wave in the optical signal output to the first region is reflected from the mirror, then reflected from the second polarizing beam splitter, and incident toward the projection lens; The S wave reflected from the second polarization beam splitter in the optical signal output to the second region is absorbed by the absorption layer; Among the optical signals output to the second region, a P wave that has passed through the second polarization beam splitter is incident on the projection lens.

13. The vehicle imaging device according to claim 11, wherein: The prism has a first absorption layer attached to the upper portion and side surface of the prism corresponding to the first region and a second absorption layer attached to the upper portion and side surface of the prism corresponding to the second region; The P wave in the optical signal output to the first region is absorbed into the first absorption layer through the first polarization beam splitter arranged in the first region; An S wave among the optical signals output to the first region is reflected from the first polarization beam splitter and the second polarization beam splitter and is incident toward the projection lens.

14. The vehicle imaging device according to claim 13, wherein: The S wave reflected from the second polarization beam splitter in the optical signal output to the second region is absorbed by the second absorption layer; Among the optical signals output to the second region, a P wave that has passed through the second polarization beam splitter is incident on the projection lens.

15. The vehicle imaging device according to claim 1, wherein: The image forming device comprises: Display panel, radiating unpolarized signal; A lower prism is disposed apart from the display panel and formed at a predetermined height; a prism disposed on an upper portion of the lower prism, wherein a mirror and a half mirror are formed inside the prism; and A projection lens, composed of a plurality of lenses arranged apart from the prism; The unpolarized light signal radiated from the first area as one side of the display panel is completely reflected from the mirror, then reflected from the half mirror at a specified ratio, and incident toward the projection lens; A remaining ratio of the P-polarized light signal that has passed through the half mirror among the non-polarized light signals radiated from the first area on the other side of the display panel is incident toward the projection lens.

16. The vehicle imaging device according to any one of claims 8, 13 and 14, wherein: The image forming device also includes a second polarization conversion plate, which is attached to the upper part of the prism between the mirror and the polarization beam splitter or to the upper part of the prism between the first polarization beam splitter and the second polarization beam splitter to synthesize the P wave and the S wave.

17. The vehicle imaging device according to any one of claims 8, 13 and 14, wherein: Also included is a processor, the processor being disposed in the vehicle and controlling data included in the optical signal output from the image forming device; The processor controls the image forming device so that the first data group having the form of the P wave and the second data group having the form of the S wave are alternately arranged.

18. The vehicle imaging device according to claim 17, wherein: The processor controls to insert the second data of the second data group between adjacent data constituting the first data group, so that the first data group and the second data group are alternately arranged along the one-axis direction; The image composed of the alternately arranged first data group and second data group is displayed in the specific area.

19. The vehicle imaging device according to claim 18, wherein: The image forming device further includes glass, the glass being configured in the first region of the display panel to be tiltable between the polarization conversion plate and the prism; The processor controls the tilt angle of the glass so that the plurality of first pixels of the first data group and the plurality of second pixels of the second data group are arranged in sequence; If the value of the offset of the plurality of second pixels compared to the plurality of first pixels is below a first critical value, the processor increases the tilt angle of the glass; If the value of the offset of the plurality of second pixels compared to the plurality of first pixels is greater than a second critical value, the processor reduces the tilt angle of the glass; The first critical value is set to be less than 0.5 pixels, and the second critical value is set to be greater than 0.5 pixels.

20. A projector, wherein: include: An image forming device, arranged inside the projector, forming light toward one side; as well as a processor, coupled to the image forming device to be operable to control the image forming device to alternately configure the first data group and the second data group; The processor controls to insert the second data of the second data group between adjacent data constituting the first data group, so that the first data group and the second data group are alternately arranged along a one-axis direction; The processor controls to display an image consisting of the alternately arranged first data group and second data group in a specific area.

Images