Optical performance testing device for vehicle-mounted HUD display screen in different use environments

Abstract

The utility model discloses an optical performance testing device for a vehicle-mounted HUD display screen in different use environments. The optical performance testing device comprises an optical testing device LMD, an LMD supporting frame, the HUD display screen, a windshield, a movable background plate and an adjustable light source chamber. The optical testing device LMD is installed on the LMD supporting frame, the LMD supporting frame is provided with a sliding block and a pulley, and the position of the LMD and the distance between the LMD and a windshield can be adjusted at will. The movable background plate can slide up and down to adjust the height, and can adjust the distance back and forth to make the image clear. The movable background plate is placed in the adjustable light source chamber, and the adjustable light source chamber can simulate, adjust and set different environment illuminations. According to the testing device, different environment illuminations are simulated and set through the adjustable light source chamber, virtual images formed by the HUD display screen are located in different environment illuminations, and therefore the imaging brightness curve or other optical performance of the HUD display screen can be tested so as to explore the imaging optical quality when the HUD display screen is used under different environment illuminations.

Description

Technical Field

[0001] The utility model relates to the technical field of optical performance testing of in-vehicle HUD displays, and specifically relates to an optical performance testing device for in-vehicle HUD displays under different usage environments. [[ID=*]] Background Technique

[0002] Head-up display, abbreviated as HUD (Head Up Display), also known as a head-up display system, refers to a multifunctional instrument panel centered on the vehicle driver and allowing blind operation. Its main function is to project important driving information such as speed and navigation onto the windshield in front of the driver, enabling the driver to view important driving information such as speed and navigation without lowering the head or turning the head, thereby improving driving safety.

[0003] In order to ensure the quality of the HUD display, it is necessary to evaluate and test the performance of the HUD display, such as optical performance and image quality parameters including virtual image distance, brightness, chromaticity, uniformity, field of view, distortion, and ghosting. Currently, most testing devices evaluate and test the optical performance and image quality parameters of the HUD display under darkroom conditions, and there is almost no evaluation and test of the optical performance and image quality of the HUD under different lighting environments.

[0004] Therefore, it is necessary to develop and design a simple HUD display testing device to evaluate the optical performance of the HUD display under different usage environments. Content of the Utility Model

[0005] The purpose of the utility model is to provide an optical performance testing device for in-vehicle HUD displays under different usage environments, which is used to test the optical performance of HUD imaging under different lighting environments, so as to explore the imaging optical quality when using the HUD display under different environmental illuminances.

[0006] The technical solution adopted by the utility model is: an optical performance testing device for in-vehicle HUD displays under different usage environments, which includes an optical testing device LMD (1), an LMD support frame (2), a HUD display (3), a windshield (4), a movable background board (5), and an adjustable light source chamber (6).

[0007] It is characterized in that: the optical test device LMD (1) is installed on the LMD support frame (2), and the LMD support frame (2) is of a gantry support structure, with sliders installed on both sides and pulleys arranged at the bottom of the support, so that the position of the LMD in the up, down, left and right directions and the distance from the windshield (4) can be adjusted arbitrarily. The movable background board (5) is provided with sliders on both sides for sliding up and down to adjust the height, and at the same time, pulleys are arranged at the bottom of the brackets on both sides for adjusting the distance back and forth to make the imaging clear. The movable background board (5) is placed in the adjustable light source chamber (6), and the adjustable light source chamber (6) can simulate and adjust different ambient illuminances.

[0008] Preferably, the optical test device LMD (1) can be a luminance meter, a chrominance meter, an imaging luminance meter or other optical test instruments.

[0009] Preferably, the LMD support frame (2) adopts a gantry support structure, is provided with a fixture for fixing the LMD, can slide left and right to adjust the position of the LMD, is provided with sliders on both sides for sliding up and down to adjust the height of the LMD, and at the same time, pulleys are arranged at the bottom for adjusting the position of the LMD back and forth, that is, the three-dimensional movable space for the observer to observe the virtual image of the HUD, namely the size range of the eye box, can be adjusted.

[0010] Preferably, the HUD display screen (3) is set as a W-HUD or AR-HUD type display screen.

[0011] Preferably, the windshield (4) is installed and fixed on the support (4-1), and the support (4-1) can be of a trapezoidal structure or other stable structures.

[0012] Preferably, the movable background board (5) is provided with sliders on both sides for adjusting the height of the background board up and down, and pulleys are arranged at the bottom of the brackets on both sides for adjusting the position of the background board back and forth arbitrarily, so as to obtain the clearest imaging, and the movable background board (5) is placed in the adjustable light source chamber (6).

[0013] Preferably, the adjustable light source chamber (6) is provided with standard LED tubes at the top, and light-shielding cloth or curtains can be installed on both sides and the back to reduce the influence of external light sources. At the same time, a light source adjustment control panel (6-1) is arranged on the left side to arbitrarily adjust the illuminance in the light source chamber (6).

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] The test device includes an optical test device LMD (1), an LMD support frame (2), a HUD display screen (3), a windshield (4), a movable background board (5), and an adjustable light source chamber (6). The optical test device LMD (1) is installed on the LMD support frame (2). The LMD support frame (2) is provided with sliders and pulleys, and the position of the LMD and the distance from the windshield (4) can be adjusted arbitrarily. The movable background board (5) can be adjusted in height by sliding up and down, and at the same time, the distance can be adjusted back and forth to make the imaging clear. The movable background board (5) is placed in the adjustable light source chamber (6), and the adjustable light source chamber (6) can simulate and adjust different ambient illuminances.

[0016] The test device simulates and sets different ambient illuminances through the adjustable light source chamber (6), so that the virtual image (7) formed by the HUD display screen (3) is located in different ambient illuminances, thereby the imaging brightness curve or other optical properties of the HUD display screen can be tested to explore the imaging optical quality when using the HUD display screen under different ambient illuminances. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of an optical performance test device for a vehicle-mounted HUD display screen under different usage environments according to an embodiment of the present invention;

[0018] Figure 2 is a schematic optical path diagram of the optical performance test of the vehicle-mounted HUD display screen according to an embodiment of the present invention;

[0019] Reference numerals: 1---optical test device LMD; 2---LMD support frame; 3---HUD display screen; 4---windshield; 4-1---windshield support frame; 5---movable background board; 6---adjustable light source chamber; 6-1---light source adjustment control panel; 7---virtual image formed by the HUD display screen; 8---driver's head center line (horizontal) direction; 9---measurement direction. Detailed Embodiments

[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The embodiment of the present invention provides an optical performance test device for a vehicle-mounted HUD display screen under different usage environments, as From Figure 1 to Figure 2As shown in the figure, it includes an optical test device LMD (1), an LMD support frame (2), an HUD display screen (3), a windshield (4), a movable background board (5), and an adjustable light source chamber (6). The optical test device LMD (1) can be installed on the LMD support frame (2). The LMD support frame (2) is of a gantry support structure, with sliders installed on both sides and pulleys provided at the bottom of the support. Therefore, the position of the LMD and the distance from the windshield (4) can be adjusted arbitrarily. The two sides of the movable background board (5) are provided with sliders for adjusting the height up and down. At the same time, pulleys are provided at the bottom of the two side supports for adjusting the distance back and forth to make the imaging clear. The movable background board (5) is placed in the adjustable light source chamber (6), and the adjustable light source chamber (6) can simulate and adjust different ambient illuminances.

[0022] The test device simulates and sets different ambient illuminances through the adjustable light source chamber (6), so that the virtual image (7) formed by the HUD display screen (3) is located in different ambient illuminances, thereby testing the imaging brightness curve or other optical properties of the HUD display screen to explore the imaging optical quality when using the HUD display screen under different ambient illuminances.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An optical performance test device for an in-vehicle HUD display screen under different usage environments, comprising an optical test device LMD (1), an LMD support frame (2), a HUD display screen (3), a windshield (4), a movable background board (5), and an adjustable light source chamber (6); It is characterized in that: The optical test device LMD (1) is installed on the LMD support frame (2). The LMD support frame (2) is of a gantry support structure, with sliders installed on both sides and pulleys provided at the bottom of the support. Therefore, the position of the LMD in the up, down, left, and right directions and the distance from the windshield (4) can be adjusted arbitrarily. The movable background board (5) is provided with sliders on both sides to adjust the height up and down. At the same time, pulleys are provided at the bottom of the support on both sides to adjust the distance back and forth to make the imaging clear. The movable background board (5) is placed in the adjustable light source chamber (6), and the adjustable light source chamber (6) can simulate and adjust different environmental illuminances.

2. The optical performance testing device for a vehicle-mounted HUD display under different usage environments according to claim 1, characterized in that: The optical test device LMD (1) can be a luminance meter, a chrominance meter, an imaging luminance meter, or other optical testers.

3. The optical performance testing device for an in-vehicle HUD display under different usage environments according to claim 1, wherein: The LMD support frame (2) adopts a gantry support structure, is provided with a fixture for fixing the LMD, can slide the LMD left and right to adjust its position, is provided with sliders on both sides, can slide up and down to adjust the height of the LMD, and at the same time, pulleys are provided at the bottom to adjust the position of the LMD back and forth, that is, the three-dimensional movable space for the observer to observe the virtual image of the HUD, that is, the size range of the eye box, can be adjusted.

4. An optical performance testing device for an in-vehicle HUD display screen under different usage environments according to claim 1, characterized in that: The HUD display screen (3) is set as a W-HUD or AR-HUD type display screen.

5. An optical performance testing device for a vehicle-mounted HUD display in different usage environments according to claim 1, characterized in that: The windshield (4) is installed and fixed on the support (4-1), and the support (4-1) is of a trapezoidal structure or other stable structures.

6. The optical performance testing device for a vehicle-mounted HUD display under different usage environments according to claim 1, characterized in that: The movable background board (5) is provided with sliders on both sides to adjust the height of the background board up and down, and pulleys are provided at the bottom of the support on both sides to adjust the position of the background board back and forth arbitrarily, so as to obtain the clearest imaging. The movable background board (5) is placed in the adjustable light source chamber (6).

7. An optical performance testing device for an in-vehicle HUD display screen under different usage environments according to claim 1, characterized in that: The adjustable light source chamber (6) is provided with standard LED tubes at the top, and light-shielding cloth or curtains can be installed on both sides and the back to reduce the influence of external light sources. At the same time, a light source adjustment control panel (6-1) is provided on the left side to arbitrarily adjust the illuminance in the light source chamber (6).

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