A HUD multi-screen display method and optical structure based on time sequence display

Abstract

The present invention discloses a HUD multi-screen display method and optical structure based on time sequence display, wherein the multi-screen HUD optical structure includes an imaging device, at least one reflective wheel, a reflector and at least two image display areas, wherein the reflective wheel is arranged between the reflector and the imaging device; the reflective wheel is divided into two or more parts, and is composed of a reflector and a hollow part. The projector of the present invention displays N images to be played in time sequence, and N-1 of the images played by the projector are respectively reflected to the image display area by the reflective wheel, and the last image is reflected to the image display area by the reflector, so as to achieve the purpose of displaying multiple screens. The present invention only needs to set a reflective wheel between the projector and the reflector to realize multi-screen playback, so it has the advantages of simple structure and strong industrial application prospects.

Description

Technical Field

[0001] The present invention relates to the field of HUD display technology, and in particular to a HUD multi-screen display method based on time sequence display and a multi-screen HUD optical structure. Background Art

[0002] Head-up display, also known as parallel display system, is a driver-centric, blind-operated, multi-functional instrument panel. Its function is to project important driving information such as speed and navigation onto the windshield in front of the driver, so that the driver can see important driving information such as speed and navigation without lowering or turning his head.

[0003] Existing HUD displays can generally only display one image, or use multiple sets of HUD devices to display multiple sets of images. This makes the product structure cumbersome in actual application scenarios, and the product cost is very high, which is not conducive to widespread promotion and use. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned technology and propose a HUD multi-screen display method and optical structure based on time sequence display to optimize the product structure and achieve the purpose of HUD multi-screen display.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A multi-screen HUD optical structure based on time sequence display includes an imaging device, at least one reflective wheel, a reflector and at least two image display areas, wherein the reflective wheel is arranged between the reflector and the imaging device; the reflective wheel is divided into N*M parts, and is composed of a reflective mirror part and a hollow part, wherein the reflective mirror part of the reflective wheel occupies M parts, M is an integer greater than or equal to 1, the hollow part occupies (N-1)*M parts, and N is the number of image display areas.

[0007] According to the multi-screen HUD optical structure based on time sequence display described in the present invention, a further preferred technical solution is: the imaging device is a projector.

[0008] According to the multi-screen HUD optical structure based on time sequence display described in the present invention, a further preferred technical solution is: the number of the reflective wheels is the number of image display areas minus one.

[0009] According to the multi-screen HUD optical structure based on time sequence display described in the present invention, a further preferred technical solution is: the number of the reflective wheels is greater than or equal to one, and the reflective wheels are arranged in sequence between the projector and the reflector.

[0010] According to the multi-screen HUD optical structure based on time sequence display described in the present invention, a further preferred technical solution is: there are 2 image displays, and the reflective wheel is divided into 6 parts, 3 of which are mirror parts and 3 are hollow parts.

[0011] According to the multi-screen HUD optical structure based on time sequence display described in the present invention, a further preferred technical solution is: the projector displays N groups of images in time sequence, the projector plays two groups of pictures at a frequency of Y Hz, and the reflective wheel rotates at a speed of Y / M revolutions per second.

[0012] According to the multi-screen HUD optical structure based on time sequence display described in the present invention, a further preferred technical solution is: the image display area is presented on the windshield of the car.

[0013] Based on the above structure, the present invention also provides a HUD multi-screen display method based on time sequence display, the projector displays N images to be played in time sequence, there are N-1 reflective wheels between the projector and the reflector, Nx frames of the picture played by the projector are respectively reflected to the image display area through the Nxth reflective wheels, and finally the Nth frame is reflected to the image display area through the reflector, where X is the number of pictures that have been played.

[0014] The present invention proposes a HUD dual-screen display method based on time sequence display based on the above technology, specifically: the projector displays two groups of images (AB)^n in time sequence, A and B are graphic labels, the projector plays AB pictures at Y Hz, and the reflective wheel rotates. When the projector displays image A, the mirror part of the reflective wheel is in the light path, image A is reflected to the A position of the windshield, and then reflected to the human eye, forming a virtual image A' outside the windshield; when the projector displays image B, the hollow part of the reflective wheel is located in the light path, the light passes through the reflective wheel and irradiates the reflective mirror, image B is reflected by the reflective mirror to the B position of the windshield, and then reflected to the human eye, forming a virtual image B' outside the windshield, forming a dual-screen display. The number of reflective wheels in the above method is the image displayed by the projector minus one.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention sets a reflective wheel between the reflector and the projector. The reflective wheel is composed of a reflector and a hollow part. When the reflective wheel rotates, a part of the picture played by the projector will be irradiated from the hollow part to the reflective mirror behind for reflection, thus achieving the purpose of playing multiple pictures by one projector.

[0017] 2. The present invention controls the playback speed of the projector and sets the rotation speed corresponding to the playback speed of the projector, so that the same projector can play out multiple screens of images at the same time according to the time setting.

[0018] 3. The present invention can realize multi-screen playback by only setting a plurality of reflective wheels between the projector and the reflector, so it has a simple structure and a strong industrial application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a multi-screen HUD optical structure based on time sequence display in Example 1 of the present invention.

[0021] Figure 2 It is a schematic diagram of the reflective wheel structure in embodiments 1 and 2.

[0022] Figure 3 It is a structural schematic diagram of a multi-screen HUD optical structure based on time sequence display in Example 2 of the present invention.

[0023] Figure 4 It is a schematic diagram of the reflective wheel structure in the second embodiment.

[0024] In the figure: 1--projector 2--reflective wheel 3--reflective mirror 4--windshield 5--human eye. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention.

[0026] Example 1

[0027] like Figure 1 , 2As shown: This embodiment takes the HUD displaying two images applied to a car as an example, and first assumes that the two images displayed are A and B respectively.

[0028] First, install a projector 1, then install a reflective wheel 2, and then install a reflective mirror 3. Install the reflective wheel 2 between the projector 1 and the reflective mirror 3. Then install the reflective wheel 2 (see Figure 2 ) is divided into 6 parts, three of which are reflective mirror materials and three of which are blank parts or hollows through which the image can pass. These projectors 1, reflective wheels 2 and reflective mirrors 3 are all located below the windshield 4. Then the reflective wheel 2 is connected to a motor and driven by the motor.

[0029] When playing images, the projector displays two groups of images (AB)^n in chronological order, the reflective wheel rotates at a certain frequency, the projector plays AB images at Y Hz, and the reflective wheel rotates. When the projector displays image A, the mirror part of the reflective wheel is in the light path, image A is reflected to the A position of the windshield, and then reflected to the human eye, forming a virtual image A' outside the windshield. When the projector displays image B, the blank part of the reflective wheel is in the light path, the light passes through the reflective wheel and shines on the reflective mirror, image B is reflected to the B position of the windshield, and then reflected to the human eye, forming a virtual image B' outside the windshield. In this way, a dual-screen display effect is achieved.

[0030] Example 2

[0031] like Figure 2 , 3 As shown in , 4 , this embodiment takes the HUD displaying three images applied to a car as an example, and first assumes that the two images displayed are A, B, and C respectively.

[0032] First, install a projector 1, then install two reflective wheels 2, and then install a reflector 3. The two reflective wheels 2 are installed front and back between the projector 1 and the reflector 3. Then each reflective wheel 2 is divided into 6 parts, two of which are reflective mirror materials, and four are blank parts or hollows through which the image can pass. Figure 4 The projector 1, the reflective wheel 2 and the reflector 3 are all located below the windshield 4. The reflective wheel 2 is then connected to a motor and driven by the motor.

[0033] When playing images, the projector displays two groups of images (ABC)^n in chronological order, the reflective wheel rotates at a certain frequency, and the projector plays three pictures ABC at MHz, and the reflective wheel rotates. When the projector displays image A, the mirror part of the first reflective wheel is located in the light path, and image A is reflected to the A position of the windshield, and then reflected to the human eye, forming a virtual image A' outside the windshield. When the projector displays image B, the light passes through the first reflective wheel and shines on the second reflective wheel. The mirror part of the second reflective wheel is located in the light path, and image B is reflected to the B position of the windshield, and then reflected to the human eye, forming a virtual image B' outside the windshield. When the projector displays image C, the light passes through the first reflective wheel and the second reflective wheel and shines on the reflective mirror. Image C is reflected to the C position of the windshield, and then reflected to the human eye, forming a virtual image C' outside the windshield. In this way, a three-screen display effect is achieved.

[0034] The present invention does not list here one by one the product structure of 4 or more images forming four screens and the four-screen playback. Those skilled in the art can directly deduce it based on the above two embodiments. The number of reflective wheels and reflective mirrors can also be directly derived based on the above two embodiments.

[0035] 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 connection; it can be a mechanical connection or an electrical connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention, and the protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multi-screen HUD optical structure based on time sequence display, characterized in that: The device comprises an imaging device, at least one reflective wheel, a reflective mirror and at least two image display areas, wherein the reflective wheel is arranged between the reflective mirror and the imaging device; the reflective wheel is divided into N*M parts and is composed of a reflective mirror part and a hollow part, wherein the reflective mirror part of the reflective wheel occupies M parts, M is an integer greater than or equal to 1, the hollow part occupies (N-1)*M parts, and N is the number of image display areas; The imaging device is a projector; The number of the reflective wheels is the number of the image display areas minus one; There is at least one reflective wheel, and the reflective wheels are arranged in sequence between the projector and the reflector; The projector displays N groups of images in chronological order, plays two groups of images at a frequency of Y Hz, and the reflective wheel rotates at a speed of Y / M revolutions per second.

2. The multi-screen HUD optical structure based on time sequence display according to claim 1, characterized in that: There are two image displays, and the reflective wheel is divided into six parts, three of which are reflective mirror parts and three are hollow parts.

3. A multi-screen HUD optical structure based on time sequence display according to any one of claims 1-2, characterized in that: The image display area is presented on the windshield of the car.

4. A HUD multi-screen display method based on time sequence display, characterized in that: The projector displays N images to be played in time sequence. There are N-1 reflective wheels between the projector and the reflector. Nx images played by the projector are respectively reflected to the image display area by the Nxth reflective wheels, and finally the Nth image is reflected to the image display area by the reflector, where X is the number of images that have been played. The projector displays two sets of images (AB)^n in chronological order. The projector plays the AB images at Y Hz. The reflective wheel rotates. When the projector displays the A image, the mirror part of the reflective wheel is in the light path. The A image is reflected to the A position of the windshield, and then reflected to the human eye, forming a virtual image A' outside the windshield. When the projector displays image B, the hollow part of the reflective wheel is located in the light path, and the light passes through the reflective wheel and shines on the reflector. Image B is reflected by the reflector to point B on the windshield, and then reflected to the human eye, forming a virtual image B' outside the windshield, forming a dual-screen display.

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