CN219957992U

CN219957992U - Ray apparatus equipment of HUD of car

Info

Publication number: CN219957992U
Application number: CN202321762913.8U
Authority: CN
Inventors: 吴德生; 钟小悦; 李志成
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-11-03
Anticipated expiration: 2033-07-05

Abstract

An opto-mechanical device of an automotive HUD, comprising: the optical machine comprises an optical machine shell, a lens is arranged on a shell of the optical machine shell, a free curved surface is arranged in an inner cavity of the optical machine shell, a plane mirror is arranged in the inner cavity of the optical machine shell, and a thin film transistor is arranged in the inner cavity of the optical machine shell; a vehicle windshield, the windshield being positioned on top of the light engine; an imaging display area, which is positioned on one side of the vehicle windshield close to the interior of the vehicle; imaging, the imaging is located at one side of the vehicle windshield close to the outside of the vehicle. According to the ray machine equipment of the automobile HUD, the dustproof lens, the free lens and the optical transmittance setting of the plane mirror are designed, so that a large amount of solar infrared light can be isolated, only visible light can be reflected on the lens, and the purposes of reducing heat generated when the HUD system works and achieving a good optical effect are achieved.

Description

Ray apparatus equipment of HUD of car

Technical Field

The utility model relates to the technical field of automobile equipment, in particular to optical machine equipment of an automobile HUD.

Background

A vehicle head-up display system (HUD) forms a virtual image of the driving information of a vehicle, and projects the virtual image in front of a driver by a certain distance, so that the driver obtains the required driving information in a head-up state, and traffic accidents caused by looking over the driving information due to low head are avoided. The HUD is transmitted on the front windshield to generate reflection, the reflected light enters human eyes, and a virtual image is formed in front of the automobile by the reverse extension line of the reflected light. Because the front windshield is used as a viewing window for a driver, the transmittance is high, the reflectivity is low, and the use scene of an automobile needs to require the content displayed by the HUD to be readable in sunlight, the reflected light of the HUD is required to reach high brightness.

The current common practice is to make the brightness of the backlight in the display screen in the HUD very high, and the brightness of the backlight is more than 30 ten thousand lumens, so that better readability can be obtained. The high-brightness backlight generates a large amount of heat, the automobile runs under the sun, sunlight irradiates into the optical engine of the HUD, and a free-form surface mirror gathers to generate a large amount of heat for the TFT module, so that in order to reduce the heat generated during the operation of the HUD system, the utility model relates to the optical engine equipment of the automobile HUD, which can not only reduce the heat generated during the operation of the HUD system, but also achieve a better optical effect.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides an optical machine device of an automobile HUD.

The aim of the utility model is realized by the following technical scheme:

an opto-mechanical device of an automotive HUD, comprising: the optical machine comprises an optical machine shell, a lens is arranged on a shell of the optical machine shell, a free curved surface is arranged in an inner cavity of the optical machine shell, a plane mirror is arranged in the inner cavity of the optical machine shell, and a thin film transistor is arranged in the inner cavity of the optical machine shell; a vehicle windshield, the windshield being positioned on top of the light engine; an imaging display area, which is positioned on one side of the vehicle windshield close to the interior of the vehicle; imaging, the imaging is located at one side of the vehicle windshield close to the outside of the vehicle.

In one embodiment, the free-form surface is located on a side of the interior cavity of the bare engine housing remote from the vehicle windshield.

In one embodiment, the optical characteristic of the free-form surface is 380nm to 740nm.

In one embodiment, the lens is located on an inclined plane of the optical engine housing near a side of the vehicle windshield, and the lens is a dust-proof lens.

In one embodiment, the plane mirror is disposed at the bottom of the inner cavity of the optical engine housing, and the mirror body of the plane mirror is inclined.

In one embodiment, the thin film transistor is disposed on a side of the inner cavity of the optical engine housing, which is far away from the free-form surface, and the body of the thin film transistor is inclined.

In one embodiment, the position of the imaging display area and the position between the imaging correspond to each other.

In one embodiment, the light emitted by the thin film transistor is refracted on the right side of the plane mirror and transmitted to the free-form surface, and the light on the free-form surface is refracted to the center of the plane mirror and passes through the lens.

In one embodiment, the vehicle windshield may deflect the light of the light engine to the outside as well as the inside of the vehicle, i.e., one forms the image and the other impinges on the image display area.

In one embodiment, the optical machine is obliquely arranged in the automobile.

Compared with the prior art, the utility model has at least the following advantages:

according to the ray machine equipment of the automobile HUD, the positions and angles of the lens on the ray machine shell and the thin film transistor, the plane mirror and the free curved surface arranged in the ray machine are designed, so that light rays emitted by the thin film transistor can be refracted onto the free curved surface through the plane mirror, then refracted onto the plane mirror again through the free curved surface and transmitted onto the windshield of the automobile, imaging is formed outside the automobile and reflected into an imaging display area, imaging is formed in the naked eye of a driver, and meanwhile, a large amount of infrared light of the sun can be isolated only by reflecting the visible light on the lens according to the optical transmittance of the dustproof lens, the free mirror and the plane mirror, and therefore, part of infrared light of the dustproof lens is not reflected continuously through the plane mirror and does not generate heat to irradiate onto the TFT module, so that sunlight irradiates only a part of visible light with very low energy, and the same polarization angle as that of the CMF film, and the generated heat is very low. Through the lens design and the structural design of the combination, the heat generated by the optical machine can be reduced, meanwhile, the damage to the module caused by the sunlight irradiation of the optical machine is prevented, the purposes of reducing the heat generated during the operation of the HUD system and achieving better optical effect are achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an internal structure of an optical engine device of an automotive HUD according to the present utility model;

FIG. 2 is a schematic diagram showing the relationship between the optical machine of the optical machine device of the HUD and the windshield of the automobile;

FIG. 3 is a schematic view of a light engine and a windshield of a light engine device of an HUD of the present utility model;

FIG. 4 is a schematic view of the transmittance of a plane mirror of an optical-mechanical device of an HUD of the present utility model;

FIG. 5 is a schematic view of the design of the transmittance of a freeform mirror of an optical-mechanical device of an automotive HUD according to the present utility model;

FIG. 6 is a schematic view of a design of transmittance of a lens of an opto-mechanical device of an HUD of the present utility model;

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-6, an opto-mechanical device of an automotive HUD, comprising: the optical machine 1, the optical machine 1 comprises an optical machine shell 11, a lens 12 is arranged on the shell body of the optical machine shell 11, a free curved surface 13 is arranged in the inner cavity of the optical machine shell 11, a plane mirror 14 is arranged in the inner cavity of the optical machine shell 11, and a thin film transistor 15 is arranged in the inner cavity of the optical machine shell 11; a vehicle windshield 2, which is located on top of the light engine 1; an imaging display area 3, the imaging display area 3 being located on a side of the vehicle windshield 2 close to the vehicle interior; the imaging 4, the imaging 4 is located on the side of the vehicle windshield 2 that is close to the outside of the vehicle.

It should be noted that, the side of the light machine 1 provided with the thin film transistor 15 is tilted toward the side close to the vehicle windshield 2, and the side provided with the lens 12 faces the side of the vehicle windshield 2, so that the light of the sun can be refracted into the light machine 1 by the vehicle windshield 2, and the light in the light machine 1 can be reflected onto the vehicle windshield 2 to form the image 4 and the image display area 3.

As shown in fig. 2 and 5, in an embodiment, the free-form surface 13 is located on a side of the inner cavity of the optical engine housing 11 away from the vehicle windshield 2, and the optical characteristic of the free-form surface 13 is 380nm to 740nm.

It should be noted that, the free-form surface 13 is disposed on the left side of the top of the plane mirror 14, and the lens with the free-form surface 13 having a curved surface faces the plane mirror 14 in an inclined manner, so that the free-form surface 13 can reflect the light irradiated from the plane mirror 14, and further, the optical curve design of the free-form surface 13 is shown in fig. 5.

As shown in fig. 1 and 6, in one embodiment, the lens 12 is positioned on the inclined surface of the side of the optical housing 11 near the windshield 2 of the vehicle, and the lens 12 is a dust-proof lens.

Note that, the lens 12 is a 3M CMF dustproof lens, and the CMF film is a film with a polarization angle, and further, the optical curve design of the lens 12 is shown in fig. 6.

As shown in fig. 1 and fig. 4, in an embodiment, the plane mirror 14 is disposed at the bottom of the inner cavity of the optical engine housing 11, and the mirror body of the plane mirror 14 is inclined.

It should be noted that, since the side of the flat mirror 14 close to the thin film transistor 15 is tilted upward and the side close to the free-form surface 13 is tilted toward each other, the light emitted from the thin film transistor 15 can be refracted onto the free-form surface 13, and the optical curve design of the flat mirror 14 is further described with reference to fig. 4.

As shown in fig. 1, in one embodiment, the thin film transistor 15 is disposed on a side of the cavity of the optical engine housing 11 away from the free-form surface 13, and the body of the thin film transistor 15 is inclined.

It should be noted that, the wavelength of the light emitted from the thin film transistor 15 is 380nm to 3000nm, the visible light visible to the human eye is 380nm to 740nm, the light 740 to 3000nm is infrared light, only heat is generated, and the infrared light 740 to 3000nm can be blocked by the plane mirror 14.

As shown in fig. 2 and 3, in an embodiment, the position of the imaging display area 3 and the position between the images 4 correspond to each other.

It should be noted that the imaging display area 3 is located just in front of the eyes of the driver of the vehicle.

As shown in fig. 1 and 2, in one embodiment, the light emitted by the thin film transistor 15 is refracted on the right side of the plane mirror 14 and transmitted to the free-form surface 13, and the light on the free-form surface 13 is refracted to the center of the plane mirror 14 and passes through the lens 12.

The thin film transistor 15 is located above the plane mirror 14 on the side away from the free-form surface 13, and is inclined with respect to the surface of the irradiation lens on the plane mirror 14 side.

As shown in fig. 2 and 3, in one embodiment, the vehicle windshield 2 deflects the light of the optical engine 1 to the outside and the inside of the vehicle, that is, one forms an image 4, and the other irradiates the image display area 3, so that the driver can directly see the vehicle windshield 2 to know the information reflected by the optical engine 1.

As shown in fig. 1, in an embodiment, the optical engine 1 is disposed in an automobile in an inclined manner, and it should be noted that the housing of the optical engine 1 is also a heat dissipation metal support, and has a certain heat dissipation capability.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An opto-mechanical device for an automotive HUD, comprising:

the optical machine (1), the optical machine (1) comprises an optical machine housing (11), a lens (12) is arranged on a shell body of the optical machine housing (11), a free-form surface (13) is arranged in an inner cavity of the optical machine housing (11), a plane mirror (14) is arranged in the inner cavity of the optical machine housing (11), and a thin film transistor (15) is arranged in the inner cavity of the optical machine housing (11);

a vehicle windscreen (2) located on top of the light machine (1);

an imaging display area (3), wherein the imaging display area (3) is positioned on one side of the vehicle windshield (2) close to the interior of the vehicle;

and an imaging (4), wherein the imaging (4) is positioned on one side of the vehicle windshield (2) close to the outside of the vehicle.

2. The vehicle HUD optomechanical device according to claim 1, characterized in that the free-form surface (13) is located on the side of the interior of the optomechanical housing (11) remote from the vehicle windshield (2).

3. An opto-mechanical device of an automotive HUD according to claim 1, characterized in that the optical characteristics of the free-form surface (13) are 380 nm-740 nm.

4. The vehicle HUD optomechanical device according to claim 1, wherein the lens (12) is located on a slope of the optomechanical housing (11) on a side close to the vehicle windscreen (2), the lens (12) being a dust-proof lens.

5. The light machine device of the automobile HUD according to claim 1, wherein the plane mirror (14) is disposed at the bottom of the inner cavity of the light machine housing (11), and the mirror body of the plane mirror (14) is inclined.

6. The optomechanical device of an automotive HUD according to claim 1, wherein the thin film transistor (15) is disposed on a side of the inner cavity of the optomechanical housing (11) away from the free-form surface (13), and the tube body of the thin film transistor (15) is inclined.

7. The opto-mechanical device of an automotive HUD according to claim 1, characterized in that the position of the imaging display area (3) and the position between the images (4) correspond to each other.

8. The optomechanical device of an automotive HUD according to claim 1, wherein the light rays emitted by the thin film transistor (15) are refracted on the right side of the plane mirror (14) and transferred to the free-form surface (13), and the light rays on the free-form surface (13) are refracted to the center of the plane mirror (14) and pass through the lens (12).

9. The vehicle HUD optomechanical device according to claim 1, characterized in that the vehicle windscreen (2) can deflect the light of the optomechanical device (1) to the outside as well as to the inside of the vehicle, i.e. one forms the image (4) and the other impinges on the image display area (3).

10. The vehicle HUD optomechanical device according to claim 1, characterized in that the optomechanical device (1) is arranged in an inclined manner in the vehicle.