CN216561226U - Head-up display system composed of Fresnel lens and Fresnel reflector - Google Patents
Head-up display system composed of Fresnel lens and Fresnel reflector Download PDFInfo
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- CN216561226U CN216561226U CN202122602666.2U CN202122602666U CN216561226U CN 216561226 U CN216561226 U CN 216561226U CN 202122602666 U CN202122602666 U CN 202122602666U CN 216561226 U CN216561226 U CN 216561226U
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Abstract
The utility model discloses a head-up display system composed of a Fresnel lens and a Fresnel reflector, and relates to the technical field of HUDs (head Up display), wherein the head-up display system comprises an eye box area, windshield glass and an image source, and also comprises the Fresnel reflector and the Fresnel lens, wherein the Fresnel reflector is arranged on one side of the image source, the Fresnel lens is arranged above the Fresnel reflector, the working surface of the Fresnel reflector is a Fresnel surface, and the surface of at least one side of the Fresnel lens is the Fresnel surface. According to the utility model, a mode of combining the Fresnel reflector and the Fresnel lens is adopted, so that an image source is amplified and projected in front of the automobile windshield glass, and a better imaging effect is generated; the virtual image position is adjusted by adjusting the image source display area.
Description
Technical Field
The utility model relates to the technical field of HUDs (head up display), in particular to a head up display system consisting of a Fresnel lens and a Fresnel reflector.
Background
The automobile windshield head-up display (HUD) can present information required by driving on the front windshield of an automobile, so that a driver is prevented from looking down at a display device of instrument information, and the interest of numerous manufacturers and consumers is aroused.
The working principle of the existing head-up display is as follows: as shown in fig. 1, the whole optical portion of the head-up display is composed of an image source, two reflectors and a dust-proof plate. The light emitted by the image source is reflected by the second reflecting mirror and the first reflecting mirror respectively, and enters human eyes through the dustproof plate and the windshield glass in a reflection mode, so that the human eyes can see images generated by the image source. And the virtual image position can be adjusted by adjusting the angle of the first reflector.
The optical part of HUD comprises the dust guard of image source, two speculums, light-emitting window at present, and its inner structure is complicated, and is higher to the face type precision and the position accuracy requirement of big or small speculum, and needs certain machinery cooperation speculum to rotate, realizes the function of adjustment virtual image position, causes the cost relatively higher.
Therefore, a head-up display system formed by a Fresnel lens and a Fresnel reflector is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a head-up display system consisting of a Fresnel lens and a Fresnel reflector.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a new line display system that fresnel lens and fresnel reflector constitute, includes eye box region, windshield and image source, still includes fresnel reflector and fresnel lens, one side of image source is equipped with fresnel reflector, fresnel lens's top is equipped with fresnel lens.
Preferably, the image source is an LCD screen or a DLP projection system.
Further, the working surface of the fresnel reflector is a fresnel surface.
Furthermore, at least one side surface of the Fresnel lens is a Fresnel surface.
According to the utility model, a mode of combining the Fresnel reflector and the Fresnel lens is adopted, so that an image source is amplified and projected in front of the automobile windshield glass, and a better imaging effect is generated; adjusting the virtual image position by adjusting the image source display area; and the structure is simple, the assembly is easy, and the cost is lower.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.
FIG. 1 is a schematic diagram of the overall structure of the prior art;
fig. 2 is a schematic view of the overall structure of the present invention.
In the figure, 1-eye box area, 2-windshield glass, 3-first reflecting mirror, 4, second reflecting mirror, 5-dust guard, 6-image source, 7-Fresnel reflecting mirror and 8-Fresnel lens.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the predetermined purpose of the utility model, the following detailed description will be given to the embodiments, structures, features and effects of the method and system for nucleic acid sample collection and management according to the present invention with reference to the accompanying drawings and preferred embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Fresnel lenses (Fresnel lenses), also known as screw lenses, are mostly sheets of polyolefin material that are injection-molded, and are also made of glass, one surface of the lens is smooth, and the other surface is inscribed with concentric circles from small to large, and the texture of the lens is designed according to the requirements of light interference and interference, relative sensitivity and receiving angle.
The head-up display system comprises an eye box area, windshield glass, an image source, a Fresnel reflector and the Fresnel lens, wherein the Fresnel reflector is arranged on one side of the image source, and the Fresnel lens is arranged above the Fresnel reflector.
Preferably, the image source is an LCD screen or a DLP projection system.
Furthermore, the working surface of the Fresnel reflector is a Fresnel surface.
Furthermore, at least one side surface of the Fresnel lens is a Fresnel surface, and the Fresnel lens can be an upper surface, a lower surface or both. The Fresnel lens has a convergence effect, so that the light energy utilization rate and the image uniformity are improved, and the imaging effect is good.
As shown in fig. 2, the specific implementation of the present invention is:
image signals sent by an image source 6 are reflected by a Fresnel reflector 7 to reach a Fresnel transmission mirror 8, then are transmitted through a Fresnel lens 8, and are reflected by windshield glass to reach an eye box area, so that a virtual image corresponding to the image source 6 is formed in front of the sight line of human eyes.
The utility model can adjust the position of the virtual image by adjusting the display area of the image source.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (4)
1. The head-up display system comprises an eye box area, windshield glass and an image source, and is characterized by further comprising a Fresnel reflector and a Fresnel lens, wherein the Fresnel reflector is arranged on one side of the image source, and the Fresnel lens is arranged above the Fresnel reflector.
2. The Fresnel lens and Fresnel reflector head-up display system as claimed in claim 1, wherein the image source is an LCD screen or a DLP projection system.
3. The head-up display system comprising a Fresnel lens and a Fresnel reflector according to claim 2, wherein the working surface of the Fresnel reflector is a Fresnel surface.
4. The head-up display system comprising a Fresnel lens and a Fresnel reflector according to any one of claims 1 to 3, wherein at least one side surface of the Fresnel lens is a Fresnel surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122602666.2U CN216561226U (en) | 2021-10-28 | 2021-10-28 | Head-up display system composed of Fresnel lens and Fresnel reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122602666.2U CN216561226U (en) | 2021-10-28 | 2021-10-28 | Head-up display system composed of Fresnel lens and Fresnel reflector |
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| Publication Number | Publication Date |
|---|---|
| CN216561226U true CN216561226U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122602666.2U Active CN216561226U (en) | 2021-10-28 | 2021-10-28 | Head-up display system composed of Fresnel lens and Fresnel reflector |
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| CN (1) | CN216561226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087264A1 (en) * | 2022-10-24 | 2024-05-02 | 浙江棱镜全息科技有限公司 | Head-up display device based on fresnel lens group |
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2021
- 2021-10-28 CN CN202122602666.2U patent/CN216561226U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087264A1 (en) * | 2022-10-24 | 2024-05-02 | 浙江棱镜全息科技有限公司 | Head-up display device based on fresnel lens group |
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