CN102269873A - Head-up display system - Google Patents

Abstract

The invention discloses a head-up display system used for vehicle navigation, which comprises an image generating device and a diffusion imaging unit, wherein the image generating device is arranged on an instrument board and used for generating visible light with an image signal and sending out the visible light, and the diffusion imaging unit is movably arranged on the instrument board and coupled with the image generating device and used for receiving the visible light from the image generating device so as to form a solid image on the diffusion imaging unit. The head-up display system simplifies the imaging system into an image generating device and a diffusion imaging unit movably connected with the image generating device, thereby simplifying the structure, reducing the cost and timely adjusting the angle of the projected image according to the requirements of a driver.

Description

head up display system

technical field

The present invention relates to a head-up display system, in particular to a head-up display system with simple structure, low cost and capable of timely adjusting image angles according to driver's needs.

Background technique

A head-up display (HUD) has been used in aircraft, especially military flight pilots, for many years. In recent years, more and more civilian cars have also begun to use head-up displays. In order to reduce the cost and integrate into the cockpit or instrument panel with limited space, the head-up display must further simplify components and mechanisms to reduce the volume of the entire system. Based on this concept, laser sources that do not require a focusing lens group have been used in head-up display systems. The head-up display system receives the signal sent by the computer or the navigation system, and converts the signal into a control signal of the laser source, and then projects the laser in a scanning manner to form an image including images and text for the driver to watch.

Please refer to FIG. 3 , a head-up display system 100' used in an existing head-up display mainly includes an image generating device 1', a diffusion unit 2' and an imaging unit 3'. The image generating device 1' is installed above the dashboard 4' of the vehicle. The imaging unit 3' is attached to the windshield 5', and the image generating device 1' emits visible light to generate a solid image 21'. The diffusing unit 2' is coupled with the image generating device 1', and receives the visible light from the image generating device 1' to form the solid image 21' on the diffusing unit 2'.

However, the existing head-up display system 100' must first be reflected by the diffusion unit 2' and then reflected by the imaging unit 3' to project the image into the driver's eyes, because the diffusion unit 2' and the imaging unit 3' must cooperate together. Images can be projected into the driver's eyes, so the projection display system 100' is complex and costly. Moreover, the head-up display system 100' cannot be moved because it is fixed on the car, so the projected image angle of the head-up display system 100' cannot be timely adjusted according to the driver's needs, causing inconvenience in use.

Aiming at the defects of the above-mentioned prior art, the inventor combined years of experience to design a head-up display system with simple structure, low cost, and capable of timely adjusting the image angle according to the driver's needs.

Contents of the invention

The purpose of the present invention is to provide a head-up display system with a simple structure, low cost, and the ability to adjust the image angle according to the driver's needs in order to address the shortcomings of the above-mentioned background technology.

In order to achieve the above object, the head-up display system for vehicle navigation provided by the present invention includes an image generating device and a diffusion imaging unit. The image generating device is installed on the instrument panel to generate and send visible light with image signals, The diffuse imaging unit can be movably installed on the dashboard and coupled with the image generating device for receiving visible light from the image generating device to form a solid image on the diffuse imaging unit.

In summary, the head-up display system of the present invention simplifies the imaging system into an image generating device and a diffusion imaging unit that is movably connected to the image generating device, thus simplifying the structure and reducing the cost, and can be timely adjusted according to the needs of the driver. Adjust the projected image angle.

Description of drawings

FIG. 1 is a structural schematic diagram of a usage mode of the head-up display system of the present invention.

FIG. 2 is a structural schematic diagram of another usage mode of the head-up display system of the present invention.

FIG. 3 is a schematic structural diagram of a conventional head-up display system.

The reference signs in the figure are explained as follows:

Head-up display system 100

Image generating device 1 Diffusion imaging unit 2

Physical Image 21 Dashboard 3

Windshield 4

Detailed ways

In order to describe the technical content, structural features, goals and effects of the present invention in detail, the following examples are given and described in detail with accompanying drawings.

Please refer to FIG. 1 , an embodiment of a head-up display system 100 of the present invention mainly includes an image generating device 1 and a diffusion imaging unit 2 . The image generating device 1 is used to generate visible light with an image signal and send it out. The diffusion imaging unit 2 can be movably coupled with the image generating device 1 , and the diffusion imaging unit 2 is used for receiving visible light from the image generating device 1 and can form a solid image 21 on the diffusion imaging unit 2 .

On the vehicle instrument panel 3 installed in the image generating device 1 of the head-up display system 100 of the present invention, in this specific embodiment, the diffuse imaging unit 2 is rotatably connected to the image generating device 1, and the diffuse imaging unit 2 is connected to the image generating device 1. The flexible connection of the device 1 is located on the side close to the windshield 4, and the image generating device 1 projects laser light to the diffuse imaging unit 2 toward the side of the windshield 4. Of course, others can replace the shaft structure in this specific embodiment, etc. Effective structures should also be included in the patent scope of the present invention. The head-up display system 100 of the present invention is applicable to automobiles, and can be applied to various types of vehicles in combination with a Global Positioning System (Global Positioning System) or electronic products with navigation functions.

In addition, the driver (not shown in the figure) is located on the opposite side of the windshield 4 .

Please refer to FIG. 1 and FIG. 2 , the visible light emitted by the image generating device 1 of the head-up display system 100 of the present invention can be a laser, and in a preferred embodiment of the present invention, the wavelength of the laser is between 400 nm and 700 nm. Because the laser is collimated light, there will be no blurred image caused by adjusting the projection distance. Compared with the traditional projection display system, the head-up display system 100 of the present invention does not need to use the lens group to adjust the focal length of the image to achieve the purpose of clear projection of the image, so the present invention reduces the number of lens groups used to adjust the definition of the projected image, so saving The cost of the heads up display system 100 .

The visible light sent by the image generating device 1 of the head-up display system 100 of the present invention can have a specific polarization direction, that is, the diffusion imaging unit 2 has a shielding effect on visible light of partial polarity in the visible light, so that part of the visible light can be sent by the diffusion imaging unit 2

The visible light sent by the image generating device 1 of the head-up display system 100 of the present invention may not have a specific polarization direction, that is, the diffusion imaging unit 2 has no blocking effect on visible light of different polarities in the visible light, and all of them can be sent by the diffusion imaging unit 2 .

The diffusion imaging unit 2 of the head-up display system 100 of the present invention can be a diffusion film with a gain function, which is used to set the visible light within a specific range of viewing angle, and can be used to control the brightness of the solid image 21 when imaging.

The diffusion imaging unit 2 of the head-up display system 100 of the present invention is a pair of optical films with high reflectivity for laser light. Any laser between meters. When the wavelength of the laser light is the same as the laser range selected by the optical lens or can be covered by the optical film, the laser light projected onto the diffusion imaging unit 2 forms a solid image 21 on the diffusion imaging unit 2 and is accepted by human eyes.

The optical film used in the diffuse imaging unit 2 of the head-up display system 100 of the present invention is a transparent substrate, and the upper and lower surfaces of the transparent substrate are formed with fine transparent diffusing particles by means of coating, coating, pasting and the like. The ratio of reflection and refraction of the visible light can be controlled by adjusting the density of diffusion particles on the upper and lower surfaces of the optical film, and the transparent substrate can be PC or glass.

Please refer to FIG. 2 , the difference between the second embodiment of the head-up display system 100 of the present invention and the above-mentioned first embodiment is that the flexible connection between the diffusion imaging unit 2 and the image generating device 1 is located near the driver's side, and the image generating device 1 Laser light is projected onto the diffuse imaging unit 2 toward the driver's side.

As can be seen from the above, the head-up display system 100 of the present invention simplifies the imaging system of the head-up display system 100 into a combination of an image generating device 1 and a diffuse imaging unit 2, simplifies the structure of the head-up display system 100, and after opening the diffuse imaging unit 2, passes The included angle between the image generating device 1 and the diffusion imaging unit 2 is adjusted timely, so that the solid image 21 formed on the diffusion imaging unit 2 can meet the different demands of the driver.

To sum up, the head-up display system 100 of the present invention simplifies the imaging system into an image generating device 1 and a diffusion imaging unit 2 flexibly connected to the image generating device 1, so the structure is simplified, the cost is reduced, and it can Adjust the projected image angle according to the user's needs.

Claims (7)

1. A head-up display system is used for vehicle navigation. The vehicle has a dashboard, which includes an image generating device installed on the dashboard to generate visible light with image signals and send it out. It is characterized in that it has a diffuser The imaging unit is movably installed on the instrument panel and coupled with the image generating device for receiving visible light from the image generating device to form a solid image on the diffuse imaging unit. 2. The head-up display system according to claim 1, wherein the diffusion imaging unit is a diffusion film. 3. The head-up display system according to claim 1, wherein the visible light is laser light. 4. The head-up display system according to claim 2, wherein the diffusion imaging unit is an optical film with high reflectivity to laser light. 5. The head-up display system according to claim 4, wherein the wavelength of the laser light is between 400 nm and 700 nm. 6. The head-up display system according to claim 1, characterized in that: the diffuse imaging unit is rotatably connected to the image generating device, and the flexible connection between the diffuse imaging unit and the image generating device is located near the windshield On the side, the image generating device projects laser light to the side of the windshield onto the diffusion imaging unit. 7. The head-up display system according to claim 1, characterized in that: the diffuse imaging unit is rotatably connected to the image generating device, and the flexible connection between the diffuse imaging unit and the image generating device is located near the driver's side , the image generating device projects the laser light to the driver's side onto the diffusion imaging unit.

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