DE102005032868A1 - Arrangement for visualizing information in motor vehicle, uses sensor to detect color and/or intensity of image background - Google Patents

Abstract

An arrangement for visualizing information in a motor vehicle comprises an optical system (1) for projecting information for forming a virtual image in front of or in vicinity of the front wind-shield of the vehicle. At least one sensor oriented in the direction of travel detects the color and/or the intensity of the image background and the sensor (6) is connected to an electronic processing unit which depending on the image background, supplies control signals for varying the back-lighting of the imaging element.

Description

arrangement for the visualization of information in a motor vehicle (head-up display), comprising an optical system for projecting at least one Information for the purpose of forming a virtual image before or in an area of the windshield of the motor vehicle, for example as imaging elements transmissive LCDs and as a lighting unit Luminescence diodes (LEDs) are provided.

Head-Up Displays (HUDs) have been used as accessories for several years Vehicle models offered. In such a HUD becomes a virtual (transparent) image of an object to be displayed generated. This Image is then reflected in the windshield of the vehicle and appears to the driver in a few meters in front of the vehicle. The object to be displayed (imaging elements) is They are typically small displays (character or graphics) either self-luminous or need to be backlit.

A such solution is described for example in DE-OS 197 51 649 A1.

There the background of the image constantly changes the intensity of the image constantly be adjusted.

As a result its that the driver's line of sight usually directed downwards is, the image background is by the roadway or another vehicle given that it may happen that this is the same or a similar Takes on the color in which the image is displayed. This inevitably leads that the driver the mirrored information only very bad or can no longer recognize.

Depending on Color and intensity of the background subjective color and intensity of the picture appear different, although this is objective not changed to have.

outgoing of these disadvantages, the invention is based on the object an arrangement for visualization of information in a motor vehicle to continue to form that, despite a color changing Background image in the direction of the object to be displayed, the information from Driver in unchanged quality can be perceived.

These The object is achieved by an arrangement of the type described above, according to the invention thereby solved, that at least one oriented in the direction of travel sensor for detecting the color and / or the intensity of the image background is present, its detection range expediently greater than the field of view of the virtual image is (about 1.5 to 2 times) and this includes and the sensor with an electronic processing unit in Compound stands, depending on from the background image Control signals for changing the backlighting of the imaging element and for changing the control of Lighting unit in terms of color and / or intensity supplies.

There the angle of view (angle range) of the advantage in the foot of the rearview mirror arranged sensor is larger, as the angle of view of the driver for detecting the Information, both the image background and the area will be around detects the defined angle range used for information.

Of the Sensor permanently detects the color and the intensity of the background image. The data is fed to the processing unit, which converts them into corresponding ones Control signals for change the backlighting of the imaging element and also to change the control of the imaging element with respect to color and intensity converts.

The Arrangement allows that in real time the color of the image is dynamically adapted to the image background can be.

The inventive arrangement will be explained in more detail using an exemplary embodiment. To demonstrate:

1 : a schematic representation of the head-up display,

2 : the schematic representation of the detection area on the roadway,

3 : the representation of the field of view of the virtual image and the Detektinsbereiches from the driver's perspective and

4 : the basic structure for color matching.

1 schematically shows the principle of a HUD. About a simplified illustrated, an imaging element 14 ( 4 ), having optical system 1 the information reaches the windscreen 2 a motor vehicle.

In the exit pupil 3 (Eyebox) of the optical system becomes one in front of the windscreen 2 created virtual image 4 the information perceived by the driver.

On for the detection of the background image 5 ( 2 ) provided sensor 6 located in the interior rearview mirror 7 of the motor vehicle, wherein the sensor 6 so oriented is that his line of sight 8th in the direction of the virtual image 4 shows.

2 shows the picture background 5 that is the detection range of the sensor 6 on the roadway 9 , The detection area of the background image 5 closes the area of the field of view 10 the virtual picture 4 one. It would also be conceivable that the detection area of the image background 5 is smaller.

The presentation of the background image 5 with the included field of view 10 the virtual picture 4 is in 3 shown from the perspective of the driver. It can also be seen that the detection area of the image background 5 is greater than the area of the field of view 10 to rule out that in the edge area of the virtual image 4 Color differences can be seen.

4 shows the basic arrangement-technical structure for the dynamic color adjustment, which in a housing 11 is housed.

That of a lighting unit consisting of an LED array 12 outgoing light passes through parabolic light-conducting rods used for homogenization 13 to a transmissive imaging element 14 (LCD). The image of information to be transmitted to the driver is then transmitted via the optical system 1 through a cover 15 on the windscreen 2 of the motor vehicle projected and as a virtual image 4 ( 1 ) perceived by the driver in front of the motor vehicle.

The from the sensor 6 in the interior rearview mirror 7 outgoing signals from the detection of the background image ( 2 and 3 ) of color and intensity are sent to an electronic processing unit 16 forwarded. This processing unit 16 converts the signals into control pulses via the control modules 17 change both the backlighting of the imaging element and the driving of the LED array for the purpose of color and intensity adjustment.

1

optical system

2

windscreen

3

exit pupil (Eyebox)

4

virtual image

5

Backgrounds

6

sensor

7

Interior rearview mirror

8th

line of sight

9

roadway

10

field of view

11

casing

12

lighting unit (LEDs)

13

Light pipe

14

imaging Element (LCD)

15

cover plate

16

processing unit

17

control module

Claims (4)

Arrangement for the visualization of information in a motor vehicle (head-up display), comprising an optical system ( 1 ) for projecting at least one piece of information for the purpose of forming a virtual image ( 4 ) in front of or in an area of the windscreen of the motor vehicle, wherein, for example, as imaging elements ( 14 ) transmissive LCDs and as a lighting unit ( 12 ) Luminescent diodes (LEDs) are provided, characterized in that at least one oriented in the direction of travel sensor ( 6 ) for detecting the color and / or the intensity of the image background ( 5 ) is present and the sensor ( 6 ) with an electronic processing unit ( 16 ), which depends on the image background ( 5 ) Control signals for changing the backlighting of the imaging element ( 14 ) and for changing the control of the lighting unit ( 12 ) in terms of color and / or intensity. Arrangement for the visualization of information in a motor vehicle according to claim 1, characterized in that the sensor ( 6 ) in the foot of the interior rearview mirror ( 7 ) is arranged. Arrangement for the visualization of information in a motor vehicle according to claim 1, characterized in that the detection area of the image background ( 5 ) larger than the field of view ( 10 ) of the virtual image ( 4 ) and this is inclusive. Arrangement for the visualization of information in a motor vehicle according to claim 3, characterized in that the area of the detection area is 1.5 times to 2 times larger than the Be field of view ( 10 ) of the virtual image ( 4 ).