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Echo cancellation method for head-up display

A ghost elimination and head-up display technology, applied in the field of head-up display, can solve the problems of high cost, demanding wedge film angle, and high modification cost

Active Publication Date: 2015-09-02
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology eliminates ghosting, but it has strict requirements on the angle of the wedge-shaped film. When installing the HUD device, it is necessary to customize the front windshield according to the actual situation in advance, and the cost is high.
[0007] Although the above technical solution can solve the ghosting problem of the head-up display system, it requires professional modification of the front windshield, and the modification cost is relatively high

Method used

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  • Echo cancellation method for head-up display
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  • Echo cancellation method for head-up display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] like figure 2 As shown, it is the structure and optical path schematic diagram of the automobile front windshield 101 and the ghost elimination plate 103 using the triangular light-transmitting plate in the method of the present invention, and the optical adhesive 102 is a silicone adhesive (Kraft K-5505H, Shenzhen, China). Zhiyantong Technology Co., Ltd.). The center thickness of the ghost removal plate 103 is 1.357 mm. The material of the ghost removal plate 103 is polyethylene terephthalate. The cross section of the ghost eliminating plate 103 along the thickness direction is triangular, that is, a triangular light-transmitting plate is used.

[0038] In general consumer models, the inclination of the front windshield is in the range of [40, 50], and the horizontal distance between the windshield and the driver is [0.75m, 0.9m]. Therefore, for the convenience of calculation, the inclination angle Φ of the automobile front windshield 101 is set as 45°, and the hor...

Embodiment 2

[0044] like image 3 As shown, it is a schematic diagram of the structure and optical path of an automobile front windshield 101 and a ghost-eliminating plate 103 using a wedge-shaped light-transmitting plate in the method of the present invention, and the optical adhesive 102 is a silicone adhesive (Kraft K-5505H, Shenzhen, China). Zhiyantong Technology Co., Ltd.). The center thickness of the ghost removal plate 103 is 0.607 mm. The material of the ghost removal plate 103 is polyethylene terephthalate. The cross section of the ghost eliminating plate 103 along its thickness direction is a trapezoid, that is, a trapezoidal light-transmitting plate is used.

[0045] In general consumer models, the inclination of the front windshield is in the range of [40, 50], and the horizontal distance between the windshield and the driver is [0.75m, 0.9m]. Therefore, for the convenience of calculation, the inclination angle Φ of the windshield 101 of the automobile is set to be 45°, and ...

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Abstract

The invention discloses an echo cancellation method for head-up display. The method includes arranging an echo cancellation board on the inner surface of a front windshield of an automobile; one face which is an adhering face adheres to the inner face of the front windshield of the automobile while the other face of the echo cancellation board, which is a display face, is used for head-up display. The thickness of the echo cancellation board changes gradually, so that an included angle is formed between the adhering face and the display face of the echo cancellation board. The included angle is an included angle of the echo cancellation board. The method is easy to implement. Only the echo cancellation board needs to be added on the front shield of the automobile and no other parts needs to be added in the automobile and on the front shield. Besides, the material of the echo cancellation board is flexible and the thickness of the echo cancellation board is no greater than 2mm. The echo cancelation board can be adhered to the front shield, so that the appearance of the front shield and the sight of a driver are not influenced.

Description

technical field [0001] The invention relates to the technical field of head-up display, in particular to a method for eliminating ghosting of head-up display. Background technique [0002] With a head-up display (HUD), images are reflected from both the inner and outer surfaces of a typical windshield, and the driver sees two or more images. like figure 1 As shown, the light L0 emitted by the picture A is reflected on the inner surface (ie, the front surface) of the glass, and the reflected light L1 is incident on the eye. , the light L0 emitted by the light source A will partially enter the glass, and will be reflected on the outer surface (ie the rear surface) of the glass, and the reflected light L2 will be transmitted through the inner surface and incident on the eyes. The point A2 is used as the image of the light source A, therefore, the human eye can see two images A1 and A2, that is, ghosting occurs. [0003] In the prior art, there are the following technical sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G02B27/00
CPCG02B27/0018G02B27/0101G02B2027/012
Inventor 王乐沈晔李旸晖张宏吴拓潘桦滟
Owner CHINA JILIANG UNIV
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