HUD display screen white balance calibration device

Abstract

The utility model discloses an HUD display screen white balance calibration device comprising a horizontally arranged upper top surface and a horizontally arranged lower top surface, a longitudinally arranged middle top surface and a longitudinally arranged reflection support are arranged between the upper top surface and the lower top surface, the upper top surface is provided with a test opening, the lower top surface is provided with a reflection prism, and the middle top surface and the reflection support are arranged in parallel. A reflection plane mirror is arranged on the reflection support, TFT installation supports are longitudinally arranged on the two sides of the middle top face, columnar TFT installation bases are arranged on the inner sides of the TFT installation supports, and TFT display screens are arranged on the tops of the TFT installation bases. During testing, the testing calibrator is installed on the testing opening, light rays of the TFT display screen are projected to the reflecting plane mirror, and then the light rays are projected out of the testing opening through cooperation of the reflecting plane mirror and the reflecting prism and enter the testing calibrator. And the test calibrator calibrates the light, and writes the relationship between the voltage and the brightness into a control chip of the display screen to complete calibration of gamma and white balance.

Description

Technical Field

[0001] The utility model relates to an optical correction device, more specifically, to a white balance calibration device for a HUD display screen. Background Art

[0002] Automotive head-up displays (HUDs) are becoming more and more popular among consumers due to their safety. Their unique optical structure makes them different from general displays in terms of the final display, and the impact of optical devices on their colors needs to be considered. Therefore, a white balance calibration method different from that of general displays is required.

[0003] Usually, the light emitted by the TFT display in the HUD system will be reflected 3 to 4 times before it finally reaches the human eye. From the above figure, it can be seen that when the incident angle is greater than 27 degrees, each reflection will cause the reflection intensity of light of different wavelengths to differ. After multiple superpositions, the reflection intensity of various colors will differ greatly. If the HUD system is calibrated in the same way as only the TFT display, the final user will see a color cast.

[0004] Chinese utility model patent document CN219161600U discloses a white balance detection and debugging device for AR-HUD, comprising a frame, a first bottom plate, a lifting mechanism, a moving mechanism and a detection analyzer, wherein the first bottom plate, the lifting mechanism, the moving mechanism and the detection analyzer are all mounted on the frame, baffles are arranged around the frame, the first bottom plate is mounted on the moving mechanism, a notch is arranged at the front of the frame, a light baffle and a barcode scanner are mounted on the lifting mechanism, the detection analyzer is mounted at the rear of the frame, and a circuit board is mounted on the first bottom plate; a support block and a pressing block structure are also mounted on the first bottom plate, the pressing block structure comprises a pressing head, a connecting block and a pressing cylinder, the pressing cylinder is mounted on the first bottom plate, the movable end of the pressing cylinder is connected to the pressing head, one end of the connecting block is hinged to the pressing head, and the other end is hinged to the cylinder base; a controller is mounted in the frame, the lifting mechanism, the moving mechanism, the detection analyzer, the circuit board and the barcode scanner are all connected to the controller, and debugging software is installed in the controller.

[0005] Obviously, this patent automatically adjusts the test parameters to achieve test automation, but it cannot solve the problem of color deviation in the white balance of existing HUD displays. Utility Model Content

[0006] Based on this, it is necessary to provide a HUD display screen white balance calibration device for the above technical problems. The HUD display screen white balance calibration device comprises a horizontally arranged upper top surface and a horizontally arranged lower top surface. A longitudinally arranged middle top surface and a longitudinally arranged reflection bracket are arranged between the upper top surface and the lower top surface. A test opening is arranged on the upper top surface, a reflection prism is arranged on the lower top surface, a reflection plane mirror is arranged on the reflection bracket, and the reflection plane mirror cooperates with the reflection prism. Both sides of the middle top surface are provided with longitudinally arranged TFT mounting brackets, and the inner side of the TFT mounting bracket is provided with a columnar TFT mounting seat, and the top of the TFT mounting seat is provided with a TFT display screen. When testing, the TFT display screen is installed on the TFT mounting seat, the reflection plane mirror is placed at the corresponding position, and the test calibrator is installed on the test opening. The light of the TFT display screen is projected onto the reflection plane mirror, and then through the cooperation of the reflection plane mirror and the reflection prism, the light is projected from the test opening and enters the test calibrator. The test calibrator calibrates the light, writes the relationship between voltage and brightness into the control chip of the display screen, and completes the calibration of gamma and white balance. The HUD display white balance calibration device can perfectly simulate the HUD light path, thereby obtaining an excellent display white balance calibration effect.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A HUD display screen white balance calibration device, characterized in that the HUD display screen white balance calibration device comprises a horizontally arranged upper top surface and a horizontally arranged lower top surface, a longitudinally arranged middle top surface and a longitudinally arranged reflection bracket are arranged between the upper top surface and the lower top surface, a test opening is arranged on the upper top surface, a reflection prism is arranged on the lower top surface, a reflection plane mirror is arranged on the reflection bracket, the reflection plane mirror cooperates with the reflection prism, longitudinally arranged TFT mounting brackets are arranged on both sides of the middle top surface, a columnar TFT mounting seat is arranged on the inner side of the TFT mounting bracket, and a TFT display screen is arranged on the top of the TFT mounting seat.

[0009] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, a pair of fixed angle brackets are provided on the inner side of the reflective bracket, and the reflective plane mirror is arranged between the fixed angle brackets.

[0010] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, the reflecting plane mirror is detachably connected to the fixed angle bracket.

[0011] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, the reflective prism is in the shape of a triangular prism.

[0012] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, the TFT display screen is detachably connected to the TFT mounting seat.

[0013] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, the reflective prism is detachably connected to the lower top surface.

[0014] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, the inner side of the fixed angle bracket is provided with a mounting groove, and the thickness of the reflective plane mirror is adapted to the width of the mounting groove.

[0015] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, a plurality of magnets are provided at the bottom of the reflective prism.

[0016] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, a pair of adjustment slide grooves are provided on the lower top surface.

[0017] As a preferred implementation of the HUD display screen white balance calibration device provided by the utility model, the width of the adjustment slot is adapted to the dry magnet.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a calibration device for the white balance of a HUD display screen. When testing, a TFT display screen is mounted on a TFT mounting seat, a reflective plane mirror is placed at a corresponding position, and a test calibrator is mounted on a test opening. The light of the TFT display screen is projected onto the reflective plane mirror, and then through the cooperation of the reflective plane mirror and the reflective prism, the light is projected out of the test opening and enters the test calibrator. The test calibrator calibrates the light, writes the relationship between voltage and brightness into the control chip of the display screen, and completes the calibration of gamma and white balance. The calibration device for the white balance of the HUD display screen can perfectly simulate the HUD optical path, thereby obtaining an excellent display screen white balance calibration effect.

[0020] In addition, the TFT display screen can be detachably connected to the TFT mounting seat. The reflective prism can be detachably connected to the lower top surface. The inner side of the fixed angle bracket is provided with a mounting slide groove, and the thickness of the reflective plane mirror is adapted to the width of the mounting slide groove. By using the mounting slide groove on the fixed angle bracket, the user can quickly replace the reflective plane mirror, which is convenient and fast, and easy to maintain.

[0021] In addition, a plurality of magnets can be provided at the bottom of the reflective prism. A pair of adjustment slots are provided on the lower top surface. The width of the adjustment slots is adapted to the dry magnets. By using the magnets at the bottom of the reflective prism, the user can quickly install and disassemble the reflective prism, which is convenient to operate. By using the combination of the magnets and the adjustment slots, the user can adjust the position of the reflective prism forward and backward, which is convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the HUD display screen white balance calibration device of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the HUD display white balance calibration device;

[0025] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of a reflective bracket of a HUD display white balance calibration device;

[0026] Figure 4 for Figure 3 A schematic diagram of a three-dimensional structure decomposition of a reflective bracket of a HUD display white balance calibration device;

[0027] Figure 5 for Figure 4 A detailed enlarged schematic diagram of area A of the three-dimensional structural decomposition schematic diagram of the reflective bracket of the HUD display white balance calibration device;

[0028] Figure 6 for Figure 2 A schematic diagram of a three-dimensional structure of another embodiment of a reflective prism of a HUD display screen white balance calibration device;

[0029] Figure 7 for Figure 2A schematic diagram of a three-dimensional structure of another embodiment of the lower top surface of the HUD display white balance calibration device;

[0030] The markings in the figure are as follows:

[0031] 1. Upper top surface; 11. Test opening; 2. Lower top surface; 21. Reflection prism; 211. Magnet; 22. Adjustment slide; 3. Middle top surface; 4. TFT mounting bracket; 41. TFT mounting seat; 42. TFT display screen; 5. Reflection bracket; 51. Fixed angle bracket; 511. Mounting slide; 52. Reflection plane mirror. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0033] As described in the background technology, in the prior art, for automobile head-up display technology, automobile head-up display (HUD) is welcomed by more and more consumers due to its safety. Its unique optical structure makes it different from general display screens in the final display, and it is necessary to consider the influence of optical devices on its color. Therefore, a white balance calibration method different from that of general display screens is required. Usually, the light emitted by the TFT display screen in the HUD system will be reflected 3 to 4 times before it finally reaches the human eye. It can be seen from the above figure that when the incident angle is greater than 27 degrees, each reflection will cause a difference in the reflection intensity of light of different wavelengths. After multiple superpositions, the reflection intensity of various colors will be greatly different. If the HUD system is calibrated in the way of only calibrating the TFT display screen, the final user will see a color cast.

[0034] In order to solve this technical problem, the utility model provides a HUD display screen white balance calibration device, comprising a horizontally arranged upper top surface 1 and a horizontally arranged lower top surface 2, a longitudinally arranged middle top surface 3 and a longitudinally arranged reflection bracket 5 are arranged between the upper top surface 1 and the lower top surface 2, a test opening 11 is provided on the upper top surface 1, a reflection prism 21 is provided on the lower top surface 2, a reflection plane mirror 52 is provided on the reflection bracket 5, and the reflection plane mirror 52 cooperates with the reflection prism 21, longitudinally arranged TFT mounting brackets 4 are provided on both sides of the middle top surface 3, a columnar TFT mounting seat 41 is provided on the inner side of the TFT mounting bracket 4, and a TFT display screen 42 is provided on the top of the TFT mounting seat 41.

[0035] Through the above structural design, when testing, the TFT display screen 42 is installed on the TFT mounting seat 41, the reflective plane mirror 52 is placed at the corresponding position, and the test calibrator is installed on the test opening 11. The light of the TFT display screen 42 is projected onto the reflective plane mirror 52, and then through the cooperation of the reflective plane mirror 52 and the reflective prism 21, the light is projected from the test opening 11 and enters the test calibrator. The test calibrator calibrates the light, writes the relationship between voltage and brightness into the control chip of the display screen, and completes the calibration of gamma and white balance. The HUD display screen white balance calibration device can perfectly simulate the HUD light path, thereby obtaining an excellent display screen white balance calibration effect.

[0036] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] Example 1

[0040] like Figure 1 and Figure 2 As shown, the HUD display screen white balance calibration device comprises a horizontally arranged upper top surface 1 and a horizontally arranged lower top surface 2, a longitudinally arranged middle top surface 3 and a longitudinally arranged reflection bracket 5 are arranged between the upper top surface 1 and the lower top surface 2, a test opening 11 is arranged on the upper top surface 1, a reflection prism 21 is arranged on the lower top surface 2, a reflection plane mirror 52 is arranged on the reflection bracket 5, and the reflection plane mirror 52 cooperates with the reflection prism 21, longitudinally arranged TFT mounting brackets 4 are arranged on both sides of the middle top surface 3, a columnar TFT mounting seat 41 is arranged on the inner side of the TFT mounting bracket 4, and a TFT display screen 42 is arranged on the top of the TFT mounting seat 41.

[0041] It should be noted that a pair of fixed angle brackets 51 are provided inside the reflective bracket 5, and the reflective plane mirror 52 is disposed between the fixed angle brackets 51. The reflective plane mirror 52 is detachably connected to the fixed angle brackets 51.

[0042] In addition, the reflecting prism 21 has a triangular prism shape.

[0043] The working mode of this embodiment is described below.

[0044] When testing, the TFT display screen 42 is mounted on the TFT mounting seat 41, a reflective plane mirror 52 is placed at the corresponding position, and the test calibrator is mounted on the test opening 11. The light from the TFT display screen 42 is projected onto the reflective plane mirror 52, and then through the cooperation of the reflective plane mirror 52 and the reflective prism 21, the light is projected out of the test opening 11 and enters the test calibrator. The test calibrator calibrates the light, writes the relationship between voltage and brightness into the control chip of the display screen, and completes the calibration of gamma and white balance. The HUD display screen white balance calibration device can perfectly simulate the HUD light path, thereby obtaining an excellent display screen white balance calibration effect.

[0045] Example 2

[0046] The HUD display screen white balance calibration device provided in Example 1 is further optimized. Specifically, the TFT display screen 42 is detachably connected to the TFT mounting seat 41 .

[0047] It should be noted that the reflective prism 21 is detachably connected to the lower top surface 2 .

[0048] The inner side of the fixed angle bracket 51 is provided with a mounting slot 511 , and the thickness of the reflective plane mirror 52 is adapted to the width of the mounting slot 511 .

[0049] The working mode of this embodiment is described below.

[0050] By using the mounting slot 511 on the fixed angle bracket 51, the user can quickly replace the reflective plane mirror 52, which is convenient and easy to maintain.

[0051] Example 3

[0052] The HUD display screen white balance calibration device provided in Embodiment 1 or 2 is further optimized. Specifically, a plurality of magnets 211 are provided at the bottom of the reflective prism 21 .

[0053] It should be noted that a pair of adjustment slots 22 are provided on the lower top surface 2 .

[0054] In addition, the width of the adjusting slot 22 is adapted to the dry magnet 211 .

[0055] The working mode of this embodiment is described below.

[0056] By using the magnet 211 at the bottom of the reflective prism 21, the user can quickly install and disassemble it, which is convenient to operate. By using the cooperation between the magnet 211 and the adjustment slide groove 22, the user can adjust the position of the reflective prism 21 forward and backward, which is convenient and reliable.

[0057] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A HUD display screen white balance calibration device, characterized in that: The HUD display screen white balance calibration device comprises a horizontally arranged upper top surface (1) and a horizontally arranged lower top surface (2); a longitudinally arranged middle top surface (3) and a longitudinally arranged reflection bracket (5) are arranged between the upper top surface (1) and the lower top surface (2); a test opening (11) is arranged on the upper top surface (1); a reflection prism (21) is arranged on the lower top surface (2); a reflection plane mirror (52) is arranged on the reflection bracket (5); the reflection plane mirror (52) cooperates with the reflection prism (21); longitudinally arranged TFT mounting brackets (4) are arranged on both sides of the middle top surface (3); a columnar TFT mounting seat (41) is arranged on the inner side of the TFT mounting bracket (4); and a TFT display screen (42) is arranged on the top of the TFT mounting seat (41).

2. The HUD display screen white balance calibration device according to claim 1, characterized in that: A pair of fixed angle brackets (51) are provided on the inner side of the reflection bracket (5), and the reflection plane mirror (52) is arranged between the fixed angle brackets (51).

3. The HUD display screen white balance calibration device according to claim 2, characterized in that: The reflecting plane mirror (52) is detachably connected to the fixed angle bracket (51).

4. The HUD display screen white balance calibration device according to claim 1, characterized in that: The reflecting prism (21) is in the shape of a triangular prism.

5. The HUD display screen white balance calibration device according to claim 1, characterized in that: The TFT display screen (42) is detachably connected to the TFT mounting seat (41).

6. The HUD display screen white balance calibration device according to claim 1, characterized in that: The reflecting prism (21) is detachably connected to the lower top surface (2).

7. The HUD display screen white balance calibration device according to claim 2, characterized in that: The inner side of the fixed angle bracket (51) is provided with a mounting slide groove (511), and the thickness of the reflecting plane mirror (52) is adapted to the width of the mounting slide groove (511).

8. The HUD display screen white balance calibration device according to claim 1, characterized in that: A plurality of magnets (211) are provided at the bottom of the reflection prism (21).

9. The HUD display screen white balance calibration device according to claim 8, characterized in that: A pair of adjustment slots (22) are provided on the lower top surface (2).

10. The HUD display screen white balance calibration device according to claim 9, characterized in that: The width of the adjustment slot (22) is adapted to the width of the dry magnet (211).

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