Variable-focus optical system and head-up display system

A head-up display system and optical system technology, applied in the field of optical systems, can solve problems such as blurred vision and achieve the effect of adjustable focal length

Active Publication Date: 2015-09-23
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the HUD systems on the market are all fixed-focus optical systems, that is, the position of the virtual image does not change. This kind of product has a disadvantage: because the focusing distance of the eyes of the driver changes with the speed of the vehicle when dri...

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  • Variable-focus optical system and head-up display system

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] figure 1 A schematic diagram of a variable focus optical system according to an embodiment of the present invention is shown. Such as figure 1 As shown, along the light emitting direction, the variable focus optical system includes in sequence: a light emitting screen 11 , a lens 12 , a secondary reflector 13 and a primary reflector 14 .

[0033] The lens 12 is suitable for correcting the direction of the light emitted from the luminous screen 1 , and emits the corrected light onto the secondary reflector 13 . The secondary reflector 13 is adapted to reflect the light incident on it to the primary reflector 14 . The main reflector 14 is adapted to reflect the light incident thereon to converge at the pupil 15 of the human eye...

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Abstract

The invention provides a variable-focus optical system and a head-up display system. The variable-focus optical system comprises a luminescent screen, a lens, a secondary mirror and a primary mirror, wherein any one of the lens, the secondary mirror and the primary mirror can move back and forth along an optical axis so as to adjust the focal length of the variable-focus optical system. The head-up display system comprises the variable-focus optical system. The head-up display system further comprises a speed acquisition module and a focal length adjustment module, the focal length of the optical system can be adjusted in real time by the focal length adjustment module according to vehicle speed information acquired by the speed acquisition module, or the focal length of the variable-focus optical system is manually adjusted according to user requirements. The variable-focus optical system and the head-up display system can effectively reduce defocus and blurred vision of a driver caused by vehicle speed variation and focus movement.

Description

technical field [0001] The invention relates to an optical system, in particular to a variable focus optical system and a head-up display system. Background technique [0002] The head-up display optical system (HUD) has now been widely used in vehicle displays. Its function is to present a virtual image a few meters in front of the human eye. The human eye can see the things in the display while seeing the road ahead. This can effectively reduce the time wasted looking at the dashboard and GPS. [0003] At present, the HUD systems on the market are all fixed-focus optical systems, that is, the position of the virtual image does not change. This kind of product has a disadvantage: because the focusing distance of the eyes of the driver changes with the speed of the vehicle when driving, the speed of the vehicle changes. The faster the focus distance of the human eye, the farther the focus distance will be. However, the HUD virtual image does not move, and the human eye can ...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B17/08
CPCG02B17/08G02B27/0101
Inventor 王元鹏
Owner GOERTEK OPTICAL TECH CO LTD
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