Vehicle head-up display method and system
A head-up display and polarization direction technology, applied in optical components, instruments, optics, etc., can solve the problems of affecting driving safety, HUD display brightness is difficult, HUD display brightness is high, and achieve the effect of reducing power consumption
Active Publication Date: 2020-05-15
BOE TECH GRP CO LTD
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Problems solved by technology
In addition, the existing HUD display brightness is difficult to achieve 3cd / m 2 Below, this causes the HUD display brightness to be too high in a dark light environment, which affects driving safety
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[0034] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.
[0035] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0036] Such as figure 1 As shown, the vehicle-mounted head-up display method provided by the embodiment of the present invention includes the following steps:
[0037] S10: Acquiring ambient brightness outside the cab;
[0038] see also figure 2 , perceive the ambient brightness outside the ca...
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The invention discloses a vehicle-mounted head-up display method and system, the method comprises the following steps that the ambient brightness outside a cab is obtained; the ambient brightness is compared with the dimming threshold values which comprise a high light threshold value and a low light threshold value, and the high light threshold value is larger than the low light threshold value;if the ambient brightness is larger than the dimming threshold values, the throughput of the head-up display area ambient light is reduced; if the ambient brightness is smaller than the dimming threshold values, the reflection amount of the head-up display area image light is reduced. According to the technical scheme, under the situation that the ambient brightness is high, the throughput of thehead-up display area ambient light is reduced so as to reduce the amount of ambient light entering the human eye, the image projected to the head-up display area can be seen clearly under the situation that the background light is not improved, under the situation that the ambient brightness is low, the reflection amount of the head-up display area ambient light is reduced so that the brightness of the head-up display area cannot be too high relative to the ambient brightness, and the problem that the driving safety is affected due to the fact that the brightness of the head-up display area istoo high under a low light environment is solved.
Description
technical field [0001] The present application generally relates to the technical field of vehicle-mounted head-up display, and in particular to a method and system for vehicle-mounted head-up display. Background technique [0002] Head-up display (Head-up Display, referred to as HUD) is a vehicle-mounted visual assistance system. It ensures that the driver's line of sight does not deviate from the road ahead, eliminates the visual blind spot caused by looking down at the instrument panel, and increases driving safety. [0003] The HUD display brightness needs to be adjusted according to the ambient brightness, so that the brightness contrast is within an appropriate range, so as to ensure that the HUD display information can be seen clearly. The brightness contrast characterizes the brightness of the image relative to the external environment background: [0004] [0005] Among them, LCR is brightness contrast ratio, L display is the light output brightness of the hea...
Claims
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IPC IPC(8): G02B27/01
CPCG02B27/0101G02B27/0179G02B2027/0118
Inventor 李佃蒙
Owner BOE TECH GRP CO LTD