KR20230072129A - Head-up display device and method for vehicle - Google Patents

Abstract

The present invention relates to a vehicle head-up display device and method. The head-up display capable of implementing augmented reality includes: a plurality of image generation units built into the vehicle body and providing flat and three-dimensional images, respectively; an optical guidance unit guiding an image signal provided from the image generation unit; and a display unit implementing the image signal provided through the optical guidance unit into an image which can be recognized by a driver.

Description

Vehicle head-up display apparatus and method {HEAD-UP DISPLAY DEVICE AND METHOD FOR VEHICLE}

The present invention relates to an apparatus and method for a head-up display for a vehicle, and more particularly, to realize augmented reality in which two image generating units superimpose a 3D virtual image on a real image or a background through an optical system and display it as a single image. It relates to a head-up display device and method for a vehicle that can be used.

In general, while driving a vehicle, a driver drives while checking vehicle information such as driving speed, engine rotational speed, and fuel amount displayed on a front instrument panel. Since the front instrument panel is located in front of the driver's seat of the instrument panel and the driver has to look down to check vehicle information, the risk of accidents is high because the driver cannot continuously look ahead.

In order to solve this problem, recently, a head-up display (hereinafter referred to as HUD) device that visualizes vehicle information is installed on the windshield glass of the vehicle. The head-up display projects various information of the vehicle in operation It consists of a projector that reflects the projected image, a reflector that reflects the projected image, and a projector that projects the reflected image onto the windshield glass. Since the image projected on the windshield glass is displayed in front of the vehicle through the driver's vision, the driver can observe the image together with the forward view while driving.

However, since the conventional head-up display provides only a virtual image on the windshield glass, there is a problem in that it cannot provide information on a real image recognized in the driver's field of view while driving. Therefore, there is a need to improve this.

The background art of the present invention is published in Republic of Korea Patent Publication No. 2005-0010429 (published on January 27, 2005, title of the invention: head-up display image position control device).

The present invention has been made to improve the above problems, and is for a vehicle capable of implementing augmented reality in which two image generating units overlap a 3D virtual image on a real image or background through an optical system and show it as one image. An object of the present invention is to provide a head-up display device and method.

A head-up display device for a vehicle according to the present invention includes: a plurality of image generators built into a vehicle body and providing flat and three-dimensional images, respectively; an optical induction unit for guiding the image signal provided from the image generation unit; and a display unit configured to implement an image signal provided through the optical induction unit into an image recognizable by a driver.

The image generating unit is arranged to face the optical induction unit and provides a flat image; and a second generating unit disposed obliquely to the optical induction unit to provide a three-dimensional image.

The first generating unit and the second generating unit are disposed in a vertical direction, and the optical induction unit includes a reflecting mirror unit that reflects the image signal provided from the first generating unit downward; a half mirror unit disposed below the reflective mirror unit, transmitting light reflected by the reflective mirror unit, and downward reflecting an image signal provided from the second generation unit disposed below the reflective mirror unit; and a curvature mirror unit for guiding the image signal passing through the half mirror unit to the display unit.

The first generating unit and the second generating unit are disposed in left and right directions, and the optical induction unit includes a reflection lens unit reflecting the image signal provided from the second generating unit; a half lens unit disposed in front of the reflection lens unit, transmitting the light reflected by the reflection lens unit, and reflecting the image signal provided from the first generation unit forward; and a curvature lens unit for guiding the image signal passing through the half lens unit to the display unit.

A head-up display method for a vehicle according to the present invention includes: an image providing step of providing flat and three-dimensional images, respectively, by a plurality of image generators built into a vehicle body; an image guidance step of guiding an image signal provided from the image generating unit by an optical induction unit; and an image implementation step in which the display unit implements the image signal provided through the optical induction unit into an image recognizable by the driver.

In the head-up display apparatus and method for a vehicle according to the present invention, since the image generating unit provides a flat image recognized as a short distance and a stereoscopic image recognized as a long distance, augmented reality can be implemented in the head-up display.

1 is a diagram schematically illustrating a head-up display device for a vehicle according to an embodiment of the present invention.
2 is a diagram schematically illustrating an image generating unit according to an embodiment of the present invention.
3 is a diagram schematically illustrating an optical induction unit when an image generating unit is arranged in a vertical direction according to an embodiment of the present invention.
4 is a diagram schematically illustrating an optical induction unit when an image generating unit is arranged in a left-right direction according to an embodiment of the present invention.
5 is a flowchart schematically illustrating a method for a head-up display for a vehicle according to an embodiment of the present invention.

Hereinafter, embodiments of a head-up display device and method for a vehicle according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a diagram schematically illustrating a head-up display device for a vehicle according to an embodiment of the present invention. Referring to FIG. 1 , a head-up display device 1 for a vehicle according to an embodiment of the present invention includes an image generating unit 10 , an optical guidance unit 20 , and a display unit 30 .

A plurality of image generators 10 are built into the vehicle body and provide planar and stereoscopic images, respectively. For example, a picture generation unit (PGU) may be used as the image generating unit 10 .

The optical induction unit 20 guides the image signal provided from the image generating unit 10 . For example, the optical induction unit 20 may induce an image signal inside the vehicle body. An image signal guided inside the vehicle body by the optical guidance unit 20 may be moved to the outside of the vehicle body.

The display unit 30 implements an image signal provided through the optical guidance unit 20 as an image recognizable by a driver. For example, the display unit 30 may be formed on a windshield. In addition, the head-up display device 1 for a vehicle may be modularized and mounted on a vehicle body, and the display unit 30 may be rotated to serve as a combiner for recognizing image signals to a driver.

2 is a diagram schematically illustrating an image generating unit according to an embodiment of the present invention. Referring to FIG. 2 , an image generator 10 according to an embodiment of the present invention includes a first generator 11 and a second generator 12 .

The first generating unit 11 is arranged to face the optical induction unit 20 to provide a flat image. For example, the first generating unit 11 may display a vehicle state. This vehicle state can be vehicle-related information (speed gauge, driving mode, target reach distance, etc.) or notification and status display (communication, unexpected situation, vehicle abnormal state).

The second generating unit 12 is disposed obliquely to the optical induction unit 20 to provide a stereoscopic image. For example, the second generator 12 may give a sense of distance to the image by transmitting the display image obliquely in a lateral direction rather than in a frontal direction. The second generating unit 12 may display the road surface condition. In addition, the second generation unit 12 may provide a navigation driving guide (left turn, right turn, straight ahead, speed limit, etc.) or display of active response to the driving environment (keep distance between vehicles, collision assistance, speed display of preceding vehicle, etc.). there is.

Meanwhile, the second generating unit 12 may irradiate an optical signal to the optical induction unit 20 so as to have an inclination a by itself or through side reflection in a state of being disposed obliquely without facing the optical induction unit 20 . At this time, the slope (a) may be designed to be greater than 0 degrees and less than 40 degrees. The image provided through the second generator 12 makes the driver feel farther than the image provided by the first generator 11, and augmented reality can be implemented.

3 is a diagram schematically illustrating an optical induction unit when an image generating unit is arranged in a vertical direction according to an embodiment of the present invention. Referring to FIG. 3 , the first generating unit 11 and the second generating unit 12 according to an embodiment of the present invention are arranged in a vertical direction. And, the optical induction unit 20 according to an embodiment of the present invention includes a reflection mirror unit 21, a half mirror unit 22, and a curvature mirror unit 23.

The reflection mirror unit 21 reflects the image signal provided from the first generator 11 downward. For example, the reflection mirror unit 21 may be disposed to face the first generating unit 11 .

The half mirror unit 22 is disposed below the reflection mirror unit 21, transmits the light reflected by the reflection mirror unit 21, and transmits an image signal provided from the second generation unit 12 disposed below. reflect downward. At this time, the second generating unit 12 may not be disposed to face the half mirror unit 22 but may be disposed to have an inclination, and a three-dimensional effect is obtained through an optical signal irradiated obliquely in a lateral direction of the second generating unit 12. can be implemented

The curvature mirror unit 23 guides the image signal passing through the half mirror unit 22 to the display unit 30 . For example, the curvature mirror unit 23 may have a rounded shape to align the focus of image signals reaching the display unit 30 .

In addition, the transmission mirror unit 24 is formed on the interior material and is disposed below the display unit 30 to transmit the image signal reflected by the curvature mirror unit 23 .

4 is a diagram schematically illustrating an optical induction unit when an image generating unit is arranged in a left-right direction according to an embodiment of the present invention. Referring to FIG. 4 , the first generating unit 11 and the second generating unit 12 according to an embodiment of the present invention are disposed in the left and right directions. And, the optical induction unit 20 according to an embodiment of the present invention includes a reflection lens unit 25, a half lens unit 26, and a curvature lens unit 27.

The reflection lens unit 25 reflects the image signal provided from the second generation unit 11 . For example, the reflection lens unit 25 may be inclined on the same horizontal line as the second generation unit 12 . At this time, the second generator 12 may not be disposed to face the reflection lens unit 25 but may be disposed to have an inclination, and a three-dimensional effect can be obtained through an optical signal irradiated obliquely in a lateral direction of the second generator 12. can be implemented The reflective lens unit 25 may have a curvature so as to be focally aligned.

The half lens unit 26 is disposed in front of the reflection lens unit 25, transmits light through the reflection lens unit 25, and reflects the image signal provided from the first generator 11 forward. For example, the half lens unit 26 and the first generating unit 11 may be disposed to face each other on the same horizontal line.

The curvature lens unit 27 guides the image signal passing through the half lens unit 26 to the display unit 30 . For example, the curvature lens unit 27 may be inclined and have a round shape to align the focus of image signals reaching the display unit 30 .

In addition, the transmission lens unit 28 is formed on the interior material and is disposed below the display unit 30 to transmit the image signal reflected by the curvature lens unit 27.

5 is a flowchart schematically illustrating a method for a head-up display for a vehicle according to an embodiment of the present invention. Referring to FIG. 5 , the head-up display method for a vehicle according to an embodiment of the present invention may include providing an image ( S10 ), guiding an image ( S20 ), and implementing an image ( S30 ).

In the image providing step (S10), a plurality of image generators 10 built into the vehicle body provide planar and stereoscopic images, respectively. For example, the image generator 10 may include a first generator 11 that provides a flat image and a second generator 12 that provides a three-dimensional image. At this time, the second generator 12 may provide a stereoscopic image by irradiating an optical signal in an oblique direction.

In the image guiding step (S20), the optical induction unit 20 guides the image signal provided from the image generating unit 10. For example, the optical guidance unit 20 may move image information of the first generation unit 11 and the second generation unit 12 to the display unit 30 in a state in which they are arranged vertically. In addition, the optical guidance unit 20 may move image information of the first generation unit 11 and the second generation unit 12 to the display unit 30 in a state in which they are arranged left and right.

In the image implementation step (S30), the display unit 30 implements the image signal provided through the optical guidance unit 20 as an image recognizable by the driver. At this time, the image signal provided from the first generator 11 may be recognized as a near image, and the image signal provided from the second generator 12 may be recognized as a far image.

The operation of the apparatus and method for a head-up display for a vehicle according to an embodiment of the present invention having the above configuration will be described below.

When the first generator 11 and the second generator 12 are arranged in the vertical direction (see FIG. 3 ), the image signal provided from the first generator 11 is reflected by the reflection mirror unit 21 and It moves downward, passes through the half mirror unit 22, and then is reflected upward from the curvature mirror unit 23 to reach the display unit 30. At this time, the driver can recognize the vehicle state provided by the first generating unit 11 . Then, the image signal provided from the second generating unit 12 is reflected from the half mirror unit 22, moves to the curvature mirror unit 23, and then is reflected upward from the curvature mirror unit 23 to display the display unit 30. reach At this time, the driver can recognize the road surface conditions provided by the second generating unit 12 . Meanwhile, it may be recognized that the image provided by the second generator 12 is farther than the first generator 11 .

When the first generator 11 and the second generator 12 are disposed in the left and right directions (see FIG. 4 ), the image signal provided from the second generator 12 is reflected by the reflective lens unit 25 and After passing through the half lens unit 26, it is reflected upward from the curvature lens unit 27 and reaches the display unit 30. At this time, the driver can recognize the road surface conditions provided by the second generating unit 12 . Then, the image signal provided from the first generation unit 11 is reflected by the half lens unit 26 and then upwardly reflected by the curvature lens unit 27 to reach the display unit 30 . At this time, the driver can recognize the vehicle state provided by the first generating unit 12 . Meanwhile, the driver may recognize that the image provided by the second generator 12 is further away than the first generator 11 .

In the head-up display apparatus and method for a vehicle according to an embodiment of the present invention, since the image generator 10 provides a flat image recognized as a short distance and a stereoscopic image recognized as a long distance, augmented reality can be implemented in a head-up display. there is.

The present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other embodiments. will understand Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: image generator 11: first generator
12: second generating unit 20: optical induction unit
21: reflective mirror unit 22: half mirror unit
23: curvature mirror unit 25: reflection lens unit
26: half lens unit 27: curvature lens unit
30: display unit

Claims (7)

a plurality of image generators built into the vehicle body and providing flat and three-dimensional images, respectively;
an optical induction unit for guiding the image signal provided from the image generation unit; and
A head-up display device for a vehicle comprising: a display unit configured to implement an image signal provided through the optical induction unit as an image recognizable by a driver.
The method of claim 1, wherein the image generating unit
a first generating unit disposed to face the optical induction unit and providing a flat image; and
A head-up display device for a vehicle comprising a; second generating unit disposed obliquely to the optical induction unit to provide a stereoscopic image.
According to claim 2,
The head-up display device for a vehicle, characterized in that the first generating unit and the second generating unit are disposed in a vertical direction.
The method of claim 3, wherein the optical induction unit
a reflection mirror unit that reflects the image signal provided from the first generation unit downward;
a half mirror unit disposed below the reflective mirror unit, transmitting light reflected by the reflective mirror unit, and downward reflecting an image signal provided from the second generation unit disposed below the reflective mirror unit; and
and a curvature mirror unit for guiding the image signal passing through the half mirror unit to the display unit.
According to claim 2,
The head-up display device for a vehicle, characterized in that the first generator and the second generator are disposed in the left and right directions.
The method of claim 5, wherein the optical induction unit
a reflective lens unit that reflects the image signal provided from the second generating unit;
a half lens unit disposed in front of the reflection lens unit, transmitting the light reflected by the reflection lens unit, and reflecting the image signal provided from the first generation unit forward; and
and a curvature lens unit for guiding the image signal passing through the half lens unit to the display unit.
An image providing step in which a plurality of image generators built into the vehicle body provide planar and stereoscopic images, respectively;
an image guidance step of guiding an image signal provided from the image generating unit by an optical induction unit; and
A head-up display method for a vehicle, comprising: a display unit implementing an image signal provided through the optical induction unit into an image recognizable by a driver.

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