Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF6 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 driving, the speed of the vehicle changes. The faster the focus distance of the human eye is, the farther the focus distance is, and the position of the HUD virtual image does not move, and the human eye is easy to blur the vision due to the defocusing of the virtual image when changing the focus

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Variable-focus optical system and head-up display system
  • Variable-focus optical system and head-up display system
  • Variable-focus optical system and head-up display system

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02B27/01G02B17/08
CPCG02B17/08G02B27/0101
Inventor 王元鹏
Owner GOERTEK OPTICAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com