Projection adjusting system and projection adjusting method thereof

Abstract

The invention provides a projection adjusting system and a projection adjusting method thereof. The projection adjusting system comprises an illumination module, a projection module and an iris diaphragm control module, and the illumination module projects light carrying imaging information. The projection module obtains light rays carrying imaging information and projects the light rays outwardsto a projection surface, the iris diaphragm control module comprises at least one iris diaphragm and a controller, and each iris diaphragm adjusts the aperture of at least one diaphragm under the control of the controller. The light intensity of the light projected outwards is adjusted by zooming the aperture of the diaphragm.

Description

technical field [0001] The invention relates to the field of projection, in particular to a projection adjustment system and a projection adjustment method thereof. Background technique [0002] Head Up Display, or HUD for short, is widely used in aircraft, which can reduce the frequency of pilots looking down at instruments and improve driving safety. Nowadays, HUD has begun to enter the field of car safety. It can display instrumentation, navigation, safety and other information on the windshield, which is reflected to the human eyes. After the human eyes receive the driving-related information, they can receive comprehensive driving-related information without bowing their heads. Information. A picture generation unit (Picture Generation Unit, PGU) system is a HUD internal light output system, wherein the PGU system has both lighting and projection functions. The iris diaphragm is widely used in the field of photography and industrial lenses, which can improve the imagi...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the PGU system in the traditional HUD has poor adjustability to its own optical performance. Once the performance debugging in the assembly stage is completed, the optical performance cannot adapt to changes in the external environment to ensure the clarity of the projected image surface. Ensure that the provision of projection information is stable and safe

Usually, when the external ambient light is strong, the brightness of the projected image plane of the PGU system is relatively low, so that the driver cannot clearly observe the image information of the HUD system and cannot obtain accurate information; when the external ambient light When it is weak, the stray light inside the system will be relatively clear, causing the contrast performance of the projection image surface projected by the PGU system to decrease, and the imaging quality of the HUD system to be poor

If the PGU system cannot adapt to the ground, it will not only affect the comfort of the driver's eyes, cause the driver's eye fatigue, and even cause a safety accident when it is more serious

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