KR20090017212A - Image compensation device of hud system for a car - Google Patents

Abstract

An image compensation device of an HUD system for a car is provided to compensate for distortion caused by difference of figure of a driver and facilitate use of a device by being freely attached and detached. A display panel(11) in which image including driving information of a vehicles is indicated is formed. A lens unit(12) refracts image coming out in a display panel as a predetermined angle. A combiner(13) reflects the image refracted with a lens unit so that a driver looks at the image. A controller adjusts the location of the display panel or the lens unit in order to compensate for the distortion of image reflected with the combiner or regulate magnification.

Description

IMAGE COMPENSATION DEVICE OF HUD SYSTEM FOR A CAR}

The present invention relates to an image correction device for compensating for distortion of an image generated in a vehicle HUD system or adjusting an image magnification.

In general, a head up display (HUD) system is developed for a fighter jet. The display light is reflected from a semi-transparent reflector (combiner) placed in front of the cockpit, and is incident on the pilot's eye, so that the pilot identifies various information. Through the combiner, the pilot can simultaneously recognize both information consisting of the landscape in front of the display and the overlapping display.

Since the display image can be imaged at an infinite origin by the lens system, it is possible to shorten the time required for movement of the eye and focus adjustment. Recently, such a HUD system is applied to a vehicle, and a system for providing a driver's safety while driving and effectively transmitting vehicle driving information and surrounding situation information has been developed and spread.

In a high-speed vehicle, it is very dangerous to stay in the driver's field of vision for a long time other than the front, so a HUD system suitable for a vehicle is becoming popular. The vehicle HUD displays information on the instrument cluster (speed, mileage, RPM, etc.) on the driver's main line of sight on the windshield, allowing the driver to easily identify driving information while driving. This helps the driver to drive safely.

The HUD system first undergoes a process of converting driving information transmitted from the vehicle's internal system into displayable data, which is reflected on a mirror and projected onto a windshield to form a virtual image within the driver's field of view. Provides driving information.

However, since such a vehicle HUD system has been mainly manufactured in a built-in method, there is a need for a HUD system that can be detached and detached according to a driver's preference. In addition, the space between the windshield and the instrument panel is limited to apply the HUD system to all vehicles. Moreover, the image reflected by the combiner may appear distorted from the driver's point of view due to the different driver's body shape. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to propose an apparatus for compensating for distortion of an image caused by a different body shape of a driver, and also to propose a HUD system apparatus having a detachable and compact structure. do.

In order to achieve the above object, it is possible to compensate for the distortion of the image or to adjust the magnification of the image as desired by the driver by moving the lens unit or the display panel of the optical system back and forth or up and down or tilting by a predetermined angle.

In addition, since the image emitted from the display panel forms a path using an axis spaced apart from the central axis of the lens by a predetermined distance, an optical system having a simpler structure than a conventional optical system can be realized.

Therefore, the user can arbitrarily adjust the driver's body shape or the desired image magnification or automatically adjust it according to the position of the user's eyes to compensate for the distortion of the image. It is possible to design a device having a simple structure.

The present invention relates to an image correction apparatus of a vehicle HUD system for compensating for the distortion of an image generated in the vehicle HUD system or adjusting the magnification of the image, and implementing a simpler system.

More specifically, the image correction apparatus of a vehicle HUD system according to an embodiment of the present invention, the display channel for displaying an image including the driving information of the vehicle; A lens unit refracting the image emitted from the display channel by a predetermined angle; A combiner for reflecting the image refracted by the lens unit so that the driver can see the image; And a control unit for adjusting the position of the display panel or the lens unit to compensate for the distortion or adjust the magnification of the image reflected by the combiner.

Preferably, the controller corrects an image by moving the display panel or the lens unit back and forth or up and down, or corrects the image by tilting the display panel or the lens unit by a predetermined angle.

Preferably, the combiner has a predetermined curvature on both the front side and the rear side, and the display panel is a micro display panel.

Preferably, the control unit further includes a sensor for automatically adjusting the position of the display panel or the lens unit based on the position of the driver's pupil, and for identifying the pupil position of the driver.

Preferably, the apparatus further includes a button unit configured to adjust the position of the display panel or the lens unit, and the controller adjusts the position of the display panel or the lens unit as the user manipulates the button unit.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily understand and implement the present invention.

1A and 1B are block diagrams illustrating an image correcting apparatus 10 of a vehicle HUD system according to an exemplary embodiment of the present invention.

FIG. 1A illustrates an embodiment in which the position of the display panel 11 or the lens unit 12 is automatically adjusted based on the pupil position of the driver, and FIG. 1B illustrates the display panel in response to the manipulation of the button unit 16 of the driver. An embodiment of adjusting the position of the lens 11 or 11 is shown.

The display panel 11 is an area where an image including driving information of a vehicle is displayed, and the information displayed on the display panel 11 is not only vehicle driving information but also navigation, video files, DMB, PC, Internet, It can contain various information such as games.

In addition, a rear surface of the display panel 11 is provided with a light source (not shown) such as a light emitting diode (LED) or a backlight unit (BLU) to allow the display information image to enter the user's field of view.

The lens unit 12 refracts the image emitted from the display panel 11 by a predetermined angle. The lens unit 12 may include a plurality of lenses, and the type and specification of the lens may vary according to specific embodiments.

The combiner 13 reflects the image refracted by the lens unit 12 so that the driver can see the image.

One or more mirrors (not shown) are provided between the lens unit 12 and the combiner 13 to appropriately change an image path so that various images displayed on the display may enter the driver's viewing angle.

The control unit 14 adjusts the position of the display panel 11 or the lens unit 12 to compensate for or adjust the magnification of the image reflected by the combiner 13.

In addition, in FIG. 1A, as a first embodiment of the present invention, a sensor for detecting a pupil position of a driver to automatically adjust the position of the display panel 11 or the lens unit 12 based on the pupil position of the driver ( 15).

When the sensor 15 detects the pupil position of the driver sitting in the driver's seat and transmits the pupil position information of the driver to the controller 14, the received controller 14 distorts the image where the pupil of the driver is located. Adjust the position of the display panel 11 or the lens unit 12 so as to reach optimally without.

In this case, the display panel 11 or the lens unit 12 may be adjusted in various ways. For example, the display panel 11 or the lens unit 12 may be moved back and forth or up and down. You can move it. In this case, since small movement in the lens system may cause a large change in the virtual image observed by the driver, it is preferable to move the display panel 11 or the lens unit 12 at minute intervals.

As another example, the image may be corrected by tilting the display panel 11 or the lens unit 12 by a predetermined angle.

As described above, when the display panel 11 or the lens unit 12 is moved back and forth or up and down or tilted by a predetermined angle based on the pupil position of the driver, distortion of the image according to the body shape of the driver may be compensated. It becomes possible.

FIG. 1B shows a second embodiment of the present invention, which includes a button portion 16 that is manipulated to adjust the position of the display panel 11 or the lens portion 12. As shown in FIG. When the user manipulates the button unit 16, the controller 14 may correct the image by moving the display panel 11 or the lens unit 12 in a predetermined direction or by tilting the lens panel 12 in a predetermined inclination.

The lens unit 12 may include a plurality of lenses, and one or more mirrors (not shown) may be included between the lens unit 12 and the combiner 13 to properly route the image generated from the panel. Can be changed.

Figure 2 is a schematic diagram showing the configuration of an image correction apparatus of a vehicle HUD system according to an embodiment of the present invention.

The light emitted from the light source 20 such as a light emitting diode or a backlight unit passes through the display panel 11 displaying various images and enters the lens unit 12 as an image image. The lens unit 12 refracts the image emitted from the display panel 11 by a predetermined angle, and the image refracted by the lens unit 12 is reflected by one or more mirrors so that the driver can see the image. Reflected by the combiner 13.

As shown in FIG. 2, in the image correcting apparatus of the HUD system for a vehicle according to an exemplary embodiment of the present disclosure, the image is separated by a predetermined distance from the central axis 18 of the lens unit 12 by a predetermined distance. Form a travel path.

When the optical axis of the conventional lens is used, the size of the lens is increased and the number of lenses cannot be avoided. Therefore, by using only a part of the lens by using an axis out of the center of the lens portion 12, a more compact device can be constructed than the conventional device.

In addition, the combiner 13 may have both a front surface and a rear surface having a predetermined curvature, thereby minimizing distortion of the display image due to light incident from the outside. In addition, it is possible to adjust the reflectance of the combiner 13 based on the reflection angle or the reflection coating rate of the combiner 13.

The display panel 11 may be a micro display panel, and the micro display panel may be a reflective micro display type or a transmissive micro display type. In particular, in the reflective type micro display type, the polarizing beam splitter (PBS) can be used for a single plate type and a two plate type.

3A to 3D are schematic views illustrating a concept of correcting an image by moving or tilting the display panel 11 or the lens unit 12 in the image correction apparatus of the vehicle HUD system according to various embodiments of the present disclosure.

3A to 3C are examples of the case where only the lens unit 12 is adjusted (Fig. 3A), only the display panel 11 is adjusted (Fig. 3B), and the lens unit 12 and the display panel ( 11) The case where all are adjusted (FIG. 3C) is shown, respectively.

If the position is adjusted by using both the lens unit 12 and the display panel 11 as shown in FIG. 3C, more precise adjustment is possible than when adjusting one element as shown in FIGS. 3A and 3B.

In addition, as shown in FIG. 3D, the image may be compensated only by adjusting the display panel 11 without the lens unit 12. In order to compensate an image without the lens unit 12, the magnification of the image to be displayed must be low. This may vary depending on the dimensions of the system components or other environments. In general, when the magnification is 1:10, that is, 10 times or less, image correction may be performed without the lens unit 12.

In addition, the image correction device of the vehicle HUD system according to an embodiment of the present invention is manufactured to be detachable to the vehicle to implement a full color navigation, night vision, rear view (rearview), side view (sideview), etc. In addition to the display, it can be used for personal use outside the vehicle.

So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be implemented.

Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

1A and 1B are block diagrams illustrating an image correction apparatus of a vehicle HUD system according to an exemplary embodiment of the present invention.

2 and 3a to 3d are schematic views showing a state in which a position of a panel or a lens is adjusted for image correction in a vehicle HUD system according to an embodiment of the present invention.

    ※ Description of the main parts of the drawing ※

10: Image correction device of the vehicle HUD system

11 display panel 12 lens unit

13: combine 14: control unit

15 sensor 16 button part

Claims (10)

A display panel displaying an image including driving information of the vehicle; A lens unit refracting the image emitted from the display panel by a predetermined angle; A combiner for reflecting the image refracted by the lens unit so that the driver can see the image; And And a control unit for adjusting the position of the display panel or the lens unit to compensate for the distortion of the image reflected by the combiner or adjust the magnification. The method of claim 1, And the image forms a movement path using an axis spaced apart from the center axis of the lens by a predetermined distance. The method according to claim 1 or 2, The control unit corrects an image by moving the display panel or the lens unit back and forth or up and down, characterized in that the vehicle HUD system. The method according to claim 1 or 2, The control unit corrects an image by tilting the display panel or the lens unit by a predetermined angle. The method of claim 1, The combiner is an image correction apparatus for a vehicle HUD system, characterized in that the front and rear has a predetermined curvature. The method of claim 1, The display panel is an image correction device of a vehicle HUD system, characterized in that the micro display panel. The method of claim 1, And the control unit automatically adjusts the position of the display panel or the lens unit based on the pupil position of the driver. The method according to claim 1 or 7, And a sensor for detecting a pupil position of the driver. The method of claim 1, And a button unit for adjusting the position of the display panel or the lens unit. The method of claim 9, And the control unit adjusts the position of the display panel or the lens unit as a user manipulates the button unit.

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