KR20190060062A - Remote HUD (Head Up Display) device and method - Google Patents

Abstract

The present invention relates to remote head up display (HUD) device and method, and to an HUD device having the size reduced by 30% or more compared to a conventional HUD device and to an HUD providing method. The remote head up display (HUD) device according to an embodiment of the present invention comprises: a concave mirror forming a magnified upright virtual image; an image processing unit positioned within a focal distance from the center of the concave mirror and outputting operation-related information in a form of images; and a convex lens positioned between the concave mirror and the image processing unit to be capable of adjusting the size of the magnified upright virtual image. In addition, the present invention may include a component enabling a user to adjust a distance between the image processing unit and the convex lens using a manual dial such that optimal size and virtual image distance can be set and provided.

Description

[0001] The present invention relates to a remote HUD (Head Up Display) device and method,

The present invention relates to a remote HUD (Head Up Display) device and method, and more particularly, to a device and a method for providing an enlarged HUD by arranging a convex lens and a concave mirror, will be.

In general, the Head Up Display (HUD) is the origin of the fighter planes that were active during World War II to reflect the machine gun. In recent years, the HUD is mounted on the cockpit of almost all aircraft, allowing pilots to view various flight and status information at a glance without distracting their eyes.

The driver periodically moves his gaze to the navigation and instrument panel during driving, which is pointed out as a major cause of traffic accidents due to neglect. In addition, the human eye has a different focus distance when viewing a distant object and a nearby object, making it impossible to recognize instantly when the distant-near-focus change occurs. Therefore, the HUD is applied to the vehicle as well, so that the speed, RPM, and navigation information of the vehicle are displayed in front of the driver's eyes, thereby minimizing the focus change operation in which the driver's gaze moves to the cluster or center fascia. It was GM in 1988 that produced the world's first mass-produced car equipped with HUD. Subsequently, both Nissan and Toyota began installing the HUD in a mass-produced car, but it was not universal. Because it was a rudimentary level of projection of extremely limited information, such as driving speed, to the windshield in monochrome. The rapid expansion of HUD has been around since 2010, when a wide range of automotive electronic equipment has been installed. The HUD applied to the vehicle can be divided into two types according to the type shown.

First, it is a windshield type that is displayed on the front windshield of a vehicle and is displayed like a hologram at a distance of about 2m when viewed by the driver. It is displayed on the windshield of the vehicle without a separate screen and appears to float about 2m ahead.

Secondly, it is a combiner type, and a separate screen (glass) is installed on the front of the driver and displayed on the screen.

In order to implement the current HUD image, a large lens is placed on a small monitor, and the principle of reflecting the refracted image onto the projection plate is used. It is important to ensure that the HUD has a distance to the top of the HUD. Traditionally, the conventional method has attempted to reduce the size of the HUD by sequentially reflecting two concave mirrors in order to secure the distance to the top of the HUD. Car manufacturers are maximizing the need to reduce the volume of the HUD system in a virtual distance implementation because they are constantly trying to reduce the number and size of the HUD components in order to fit the HUD into the already complex driver module.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a remote HUD (Head Up Display) device and method that can provide an image at a sufficient virtual distance to minimize the distance-to-near-focus variation during operation while reducing the size for installation in a dashboard .

According to an aspect of the present invention, there is provided a remote HUD (Head Up Display) device, which includes a concave mirror that forms an enlarged fixed virtual image, a focus lens positioned within a focal distance from the center of the concave mirror, And a convex lens positioned between the concave mirror and the image processing unit and capable of adjusting the size of the enlarged fixed virtual image.

According to an embodiment of the present invention, the concave mirror may have a radius of curvature of 100 cm and a focal length of 50 cm.

According to an embodiment of the present invention, the image processing unit may be located at a distance of 37.5 cm from the concave mirror.

According to one embodiment of the present invention, the focal length of the convex lens is 25 cm, and the distance from the image processing unit may be 12.5 cm.

According to an embodiment of the present invention, the convex lens can adjust the size of the image through position adjustment.

According to an embodiment of the present invention, the image processor may adjust the size of the image.

According to an embodiment of the present invention, the image processing unit may be positioned at (n-1) / n times the focal length of the concave mirror to form a virtual image of n times.

According to an embodiment of the present invention, the concave mirror can project an image on a windshield glass.

According to an embodiment of the present invention, the HUD device may further include a combiner for displaying an image projected from the concave mirror in a view of the user.

According to an aspect of the present invention, there is provided a head-up display (HUD) method for driving and displaying driving-related information, the method comprising: enlarging the output image in a convex lens; Generating a virtual image by reflecting the virtual image on a concave mirror, and outputting the generated virtual image to a combiner to display the operation-related information to the user.

According to the present invention, according to the setting of the lens magnification n ', the proposed HUD device can reduce the height and the size by (2n'-1) / (n') ² times as much as the conventional HUD device, have.

In addition, by adjusting the position of the display and the convex lens with the manual dial, the distance of the virtual image of the operation related information output by the HUD can be adjusted, so that the user can set the optimal size and receive it.

1 and 2 are schematic views of a general virtual distance HUD device.
3 is a schematic diagram of the proposed remote HUD device.
4 is a view for explaining the virtual phase principle of the concave mirror.
5 is a schematic diagram of a concave mirror according to an embodiment of the present invention.
6 is a schematic view for securing an n-fold virtual image using a concave mirror according to an embodiment of the present invention.
7 is an illustration of a HUD optical system simulation according to a first step in accordance with an embodiment of the present invention.
8 is a view for explaining the virtual phase principle of the convex lens.
9 is a schematic view of a convex lens according to an embodiment of the present invention.
10 is a remote HUD (Head Up Display) device according to an embodiment of the present invention.
11 is an example of a HUD optical system simulation according to an embodiment of the present invention.
12 is a flowchart of a remote HUD (Head Up Display) method according to an embodiment of the present invention.
13 is a schematic diagram of a specifically proposed remote HUD device.
Figure 14 is a view of a manual dial capable of adjusting the distance between the display and the convex lens of the inventive device.
15 is a view of the entire remote HUD device.

Hereinafter, a 'HUD (Head Up Display) device and method' according to the present invention will be described in detail with reference to the accompanying drawings. The embodiments are provided so that those skilled in the art can easily understand the technical spirit of the present invention, and thus the present invention is not limited thereto. In addition, the matters described in the attached drawings may be different from those actually implemented by the schematic drawings to easily describe the embodiments of the present invention.

In the meantime, each constituent unit described below is only an example for implementing the present invention. Thus, in other implementations of the present invention, other components may be used without departing from the spirit and scope of the present invention.

In addition, each component may be implemented solely by hardware or software configuration, but may be implemented by a combination of various hardware and software configurations performing the same function. Also, two or more components may be implemented together by one hardware or software.

Also, the expression " comprising " is intended to merely denote that such elements are present as an expression of " open ", and should not be understood to exclude additional elements.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a schematic view of a general virtual distance HUD device.

Referring to FIG. 1, a general HUD device reflects an image output from an image processing unit 1 to reflection mirrors 2 and 3 and projects the reflected light onto a windshield glass 4 serving as a combiner, So that the virtual image 5 can be seen outside the shield 4, thereby providing the driver with driving information in the form of an image. The HUD device may be installed in a space between the dashboard and the windshield, or may be installed in the dashboard.

2 shows a schematic view of a remote HUD device proposed by the present invention.

Referring to FIG. 2, the proposed HUD apparatus includes a windshield glass (hereinafter, referred to as " windshield glass ") functioning as a combiner by ensuring a virtual image distance through a convex lens 2 and reflecting the image output from the image processing unit 1 to a concave mirror 3 4 so that the driver can see the virtual image 5 on the outside of the windshield 4, thereby providing the driver with the remote driving information in the form of an image.

Figure 3 shows a schematic view of a general virtual distance HUD device.

3, a general HUD apparatus reflects an image output from the image processing unit 11 to a reflection mirror 12 and projects the reflection image on a windshield glass 13 serving as a combiner, 13) so that the driver can see the virtual image 14 in the form of an image. The HUD device may be installed in a space between the dashboard and the windshield, or may be installed in the dashboard.

4 is a view for explaining the virtual phase principle of the concave mirror.

에 의해 물체거리

일 때, 상의 거리

이다. 즉,

일 때

로 4배의 허상을 확보할 수 있다.Referring to FIG. 4, the concave mirror utilizes that when the object is closer to the mirror than the focus (f) (a < f), the virtual image becomes larger than the object. Formula of lens

Object distance by

When the distance

to be. In other words,

when

4-fold virtual image can be obtained.

5 is a schematic diagram of a concave mirror according to an embodiment of the present invention.

Referring to FIG. 5, the concave mirror according to an embodiment of the present invention may reflect images of operation-related information output from the image processing unit 11. And the concave mirror can form the reflected image in a wider image than the real image. The user can recognize the driving-related information through the fixed virtual image. The virtual image of the image reflected on the concave mirror can be recognized by the user through the windshield 13 of the vehicle.

The concave mirror may have a radius of curvature R of 100 cm and a focal length f of 50 cm. The concave mirror may have a length of 30 cm and a length of 15 cm. The image processing unit 11 may be located at a distance of 37.5 cm, which is 3/4 of the focal length of the concave mirror. The virtual image generated by the image processing unit 11 and the concave mirror can be formed in a size, and the distance from the concave mirror to the virtual image can be 150 cm. The size of the virtual image may be four times larger than the size of the image output from the image processing unit 11.

FIG. 6 is a schematic view for securing an n-fold virtual image using a concave mirror according to an embodiment of the present invention, and FIG. 7 is an example of a HUD optical system simulation according to the first step according to an embodiment of the present invention. At this time, n (magnification of the HUD virtual image) can be set between 2 and 7. In this case, the concave mirror focal length f may also be set to 50 to 100 cm.

6 and 7, the HUD device according to an embodiment of the present invention may include a concave mirror 20. The concave mirror 20 may have a focus f. The image processing unit 11 of the HUD can output the operation-related information as an image. The image processing unit 11 may output an image using an LED. The concave mirror 20 may have a radius of curvature R of 100 cm and a focal length f of 50 cm. The concave mirror may have a length of 30 cm and a length of 15 cm. The image processing unit 11 may be located at a distance of 37.5 cm, which is 3/4 of the focal length of the concave mirror.

The image output from the image processing unit 11 may be incident on the concave mirror 20 in the form of light and reflected. The concave mirror 20 can reflect the image in the direction of the combiner. The concave mirror 20 may form a virtual image I 'of the image output from the image processing unit 11. [ The user can visually recognize the virtual image formed by the concave mirror 20 through the combiner. The virtual image I 'may be formed at a position of 150 cm from the concave mirror 20. The image processing unit 11 can output the image in an inverted form.

8 is a view for explaining the virtual phase principle of the convex lens.

(L'은 볼록렌즈(21)와 영상처리부(11)사이 거리)로 계산하여 초점거리에 위치시키면, 영상처리부(11)를 볼록렌즈(21) 쪽으로 당겨서

f' 거리에 위치할 수 있게 된다. 줄이고자 하는 시스템 높이의 축소길이(ΔL)는

와 같은 식으로 알맞게 설계할 수 있다. 영상처리부(11)를 볼록렌즈 초점거리의 1/2지점 (n'=2)에 두었을 때 볼록렌즈(21) 초점거리는 25cm이며 줄어드는 시스템 높이는 12.5cm이다. 이 때에 n'(볼록렌즈로 구현할 허상의 배율)은 1~4사이로 설정할 수 있다. 8, the convex lens 21 appears behind the image processing unit 11 when the image processing unit 11 is closer to the lens than the focus F '(a < f) The convex lens 21 according to an embodiment of the present invention may have a focal length f 'of 25 cm. The focal length of the convex lens 21 is determined in the following manner. First, when the magnification of the virtual image to be embodied by the convex lens 21 is set to n 'times, the focal length of the convex lens 21 to be used is

(L 'is a distance between the convex lens 21 and the image processing unit 11) and is positioned at the focal distance, the image processing unit 11 is pulled toward the convex lens 21

f 'distance. The reduced length (ΔL) of the system height to be reduced

Can be suitably designed. When the image processing unit 11 is placed at a half point (n '= 2) of the convex lens focal length, the focal length of the convex lens 21 is 25 cm, and the system height is 12.5 cm. At this time, n '(the magnification of the virtual image to be embodied as a convex lens) can be set between 1 and 4.

9 is a schematic view of a convex lens according to an embodiment of the present invention.

Referring to FIG. 9, the convex lens 21 according to an embodiment of the present invention may have a size of 14 cm in width and 10 cm in length. The convex lens 21 may have a focal length of 25 cm. The convex lens 21 may be positioned between the concave mirror 20 and the image processing unit 11. [ The image processing unit 11 may be located within a focus distance of the convex lens 21. [

FIG. 10 is a schematic diagram for reducing the height of the entire system using a convex lens according to an embodiment of the present invention, and FIG. 11 is an example of a simulation of a HUD optical system according to an embodiment of the present invention.

이 된다. 이때, n은 반사경에서 확대하고자 하는 HUD영상의 배율, 즉 오목거울 설계시 거울의 배율을 나타내며, m은 반사경에서 관측자 눈의 거리를 오목거울 초점거리의 비율로 나타낸 것이며, n' 은 추가되는 볼록렌즈의 배율로서, HUD영상의 총배율은 n*n' 으로 나타낸다. 10, the distance HUD proposed by the present invention is such that the distance between the image processing unit (size A) and the concave mirror is (n-1) f / n before the convex lens is placed and the distance from the concave mirror to the driver's eye When expressed as b = mf, the minimum size of the required concave mirror (mirror) is

. In this case, n represents the magnification of the HUD image to be enlarged in the reflector, that is, the magnification of the mirror in designing the concave mirror, m represents the distance of the viewer's eye in the reflector as a ratio of the concave mirror focal length, As a lens magnification, the total magnification of the HUD image is denoted by n * n '.

10 and 11, the HUD according to an embodiment of the present invention may include an image processing unit 11, a concave mirror 20, and a convex lens 21.

The image processing unit 11 can image the operation-related information as an image and output the image. The image processing unit 11 may include a photodiode (PD) or a light emitting diode (LED). The driving-related information may include current driving speed, RPM, fuel amount, room temperature, engine room temperature, occurrence of overheating, occurrence of vehicle abnormality, navigation image, and rear camera image. The operation-related information output by the image processing unit 11 can be changed according to the user's selection. The information may be indicative of dangerous substances in front. The dangerous goods may include other cars, obstacles, people, animals. The display of the dangerous goods may display the image of the HUD in a specific color in the form of the dangerous goods in the dangerous goods actually recognized in the user's sight. For example, when there is a vehicle with a possibility of collision in front, when the user looks at the vehicle, the vehicle may be marked with a red color. If the dangerous object approaches within a certain distance, the danger can be notified by blinking.

The concave mirror 20 reflects the image output from the image processing unit 11 and provides it to a user through a combiner. The concave mirror 20 may form the enlarged virtual image and provide the image to a user through a combiner. The combiner may be a windshield 13 of an automobile. The combiner may be a transparent glass plate as a component of a separate HUD device. The concave mirror 20 may have a radius of curvature R of 100 cm and a focal length f of 50 cm. The concave mirror may have a length of 30 cm and a length of 15 cm. The image processing unit 11 may be located at a distance of 37.5 cm, which is 3/4 of the focal length of the concave mirror.

The convex lens 21 may perform a function of enlarging the image before the image output from the image processing unit 11 reaches the concave mirror 20. The convex lens 21 may be positioned between the image processing unit 11 and the concave mirror 20. The image processing unit 11 may be positioned within the focal distance of the convex lens 21 from the convex lens 21. [ The convex lens 21 may have a straight line connecting the center of the concave mirror 20 and the concave mirror 20 to the center of the lens. The convex lens 21 can move back and forth around a straight line connecting the center of the concave mirror 20 and the focus of the concave mirror 20. The convex lens 21 can change the size of the image through the movement of the position. The user can set the size of the image and the position of the convex lens 21 can be adjusted according to the setting. The focal length of the convex lens 21 is 25 cm and the reduction system height is 12.5 cm. The convex lens 21 can adjust the refractive index. The convex lens 21 may include a plurality of lenses having different refractive indices therein. The convex lens 21 can be selected by inserting a proper number of lenses according to the magnification selection of the user. The plurality of convex lenses 21 may be arranged in a circular shape and rotated while being rotated.

The conventional device has a size of 37.5 cm, but the HUD device according to an embodiment of the present invention may have a size of 25 cm.

Figure 13 is a schematic diagram of a remote HUD device that the present invention specifically suggests.

Referring to FIG. 13, a mobile phone or a display, which is a video processing unit, can be positioned and fixed by a user. The convex lens is fixed to the device and the lower part is made of concave mirror.

Figure 14 is a view of a manual dial capable of adjusting the distance between the display and the convex lens of the inventive device.

Referring to FIG. 14, the convex lens is fixed, and the outside image processing unit and the system can move up and down, so that the user can adjust the distance between the convex lens and the image processing unit. The adjustment method is manual dial type and can be gradually reduced or increased. The distance adjustment can be automatically adjusted by receiving an electronic input.

15 is a view of the entire remote HUD device.

Referring to FIG. 13 and FIG. 15, an anti-reflection coated glass can be placed at a position where the light reflected from the concave mirror advances to protect the concave mirror.

12 is a flowchart of a remote HUD (Head Up Display) method according to an embodiment of the present invention.

Referring to FIG. 12, a remote HUD (Head Up Display) method according to an embodiment of the present invention may include a step S101 of outputting driving-related information.

In step S101, the operation-related information can be converted into an image and output. The step S101 may output the image using a photodiode (PD) or a light emitting diode (LED). The driving-related information may include current driving speed, RPM, fuel amount, room temperature, engine room temperature, occurrence of overheating, occurrence of vehicle abnormality, navigation image, and rear camera image. The operation-related information output by the step S101 may be changed according to the user's selection. The information may be indicative of dangerous substances in front. The dangerous goods may include other cars, obstacles, people, animals. The display of the dangerous goods may display the image of the HUD in a specific color in the form of the dangerous goods in the dangerous goods actually recognized in the user's sight. For example, when there is a vehicle with a possibility of collision in front, when the user looks at the vehicle, the vehicle may be marked with a red color. If the dangerous object approaches within a certain distance, the danger can be notified by blinking.

The remote HUD (Head Up Display) method according to an embodiment of the present invention may include enlarging the output image in the convex lens (S102).

In step S102, the image enlarged before the image outputted in step S101 reaches the concave mirror 20 can be performed. In step S102, the convex lens 21 may be positioned between the image processing unit 11 and the concave mirror 20. The image processing unit 11 may be positioned within the focal distance of the convex lens 21 from the convex lens 21. [ In step S102, the convex lens 21 may have a straight line connecting the center of the concave mirror 20 and the concave mirror 20 as the center of the lens. In step S102, the convex lens 21 may move back and forth around a straight line connecting the center of the concave mirror 20 and the focus of the concave mirror 20. The convex lens 21 can change the size of the image through the movement of the position. The user can set the size of the image and the position of the convex lens 21 can be adjusted according to the setting. The focal length of the convex lens 21 may be 25 cm and the shrinking system height may be 12.5 cm. The convex lens 21 can adjust the refractive index. The convex lens 21 may include a plurality of lenses having different refractive indices therein. The convex lens 21 can be selected by inserting a proper number of lenses according to the magnification selection of the user. The plurality of convex lenses 21 may be arranged in a circular shape and rotated while being rotated.

The remote HUD (Head Up Display) method according to an embodiment of the present invention may include a step (S103) of generating a virtual image by reflecting the enlarged image on a concave mirror.

In step S103, the concave mirror 20 may form an enlarged virtual image of the image output from the image processing unit 11. [ In step S103, the concave mirror 20 may have a radius of curvature R of 100 cm and a focal length f of 50 cm. The concave mirror may have a length of 30 cm and a length of 15 cm. In step S103, the image processing unit 11 may be located at a distance of 37.5 cm, which is 3/4 of the focal length of the concave mirror.

The remote HUD (Head Up Display) method according to an embodiment of the present invention may include a step (S104) of outputting the generated virtual image to the combiner to display the operation related information to the user.

In step S104, the concave mirror 20 reflects the image output from the image processing unit 11 and provides it to the user through a combiner. In step S103, the concave mirror 20 may form the enlarged virtual image and provide the image to the user through a combiner. The combiner may be a windshield 13 of an automobile. The combiner may be a transparent glass plate as a component of a separate HUD device.

The present invention has been described with reference to the preferred embodiments. It will be understood by those skilled in the art that the present invention may be embodied in various other forms without departing from the spirit or essential characteristics thereof. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

Claims (10)

A concave mirror forming an enlarged fixed image;
An image processing unit located within a focal distance from the center of the concave mirror and outputting operation related information as an image; And
A convex lens positioned between the concave mirror and the image processing unit and capable of adjusting the size of the enlarged fixed virtual image;
(Head Up Display) device.
The method according to claim 1,
The concave mirror
HUD (Head Up Display) device with a focal length f of 50? F? 100 (cm).
3. The method of claim 2,
Wherein the image processing unit comprises:
From the concave mirror ((n-1) f / n-

) Located on the street,
Wherein n is 2? N? 7.
(Where n is a multiple of the concave mirror, f is the focal length of the concave mirror,

Is a multiple of a convex lens,

Is the focal length of the convex lens.)
[2]
The concave mirror
The total distance from the concave mirror to the eyes of the driver is m * f,
Wherein the mirror size is at least m * n * / (n * -1) times the size A of the image processing unit.
3. The method of claim 2,
In the convex lens,
The focal length f 'is 12.5 cm? F'? 50 cm,
(N'-1) f '/ n' from the image processing unit,
And a head up display (HUD) device located at a distance f 'from the concave mirror.
6. The method of claim 5,
In the convex lens,
HUD (Head Up Display) device that can adjust the size of the image through position adjustment.
6. The method of claim 5,
In the convex lens,
HUD (Head Up Display) device that can adjust the size of the image through position adjustment.
The method according to claim 1,
The concave mirror
HUD (Head Up Display) device that projects images on windshield glass.
The method according to claim 1,
A combiner for displaying an image projected from the concave mirror in a field of view of a user;
(Head Up Display) device.
Outputting driving-related information and outputting the driving-related information;
Enlarging the output image from the convex lens;
Generating a virtual image by reflecting the enlarged image on a concave mirror; And
Outputting the generated virtual image to a combiner to display driving-related information to a user;
(Head Up Display) method.

Images