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Large-depth-of-field true-three-dimensional augmented reality display method and system

An augmented reality, three-dimensional technology, applied in optical components, optics, instruments, etc., can solve problems such as three-dimensional depth of field constraints

Inactive Publication Date: 2018-04-13
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the 3D depth of field of this system is severely restricted by the depth of field of the integrated imaging system, and the correct superposition of virtual 3D information and real 3D environment can only be realized within a limited distance.

Method used

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  • Large-depth-of-field true-three-dimensional augmented reality display method and system
  • Large-depth-of-field true-three-dimensional augmented reality display method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0040] This embodiment provides a transmissive real three-dimensional augmented reality display glasses with large depth of field, such as figure 1 , figure 2 As shown, it includes a sequential lighting module 1 embedded in the mirror legs, an information display module 2, a control module 4 and a reflector 5, and an information combination module 3 integrated in the lens. The sequence lighting module is composed of three LED point light sources 11, 12, 13, and the distances from the center of the LED point light sources to the center of the information display module are different. The LED point light source emits approximate spherical waves, and the approximate spherical waves illuminate the information display module 2 . The information display module 2 is composed of a transmissive liquid crystal (LCD) microdisplay 21 and a lens array 22 . The lens array is a Fresnel lens array with a focal length of F, and the LCD microdisplay is located at 0.1F within one focal length...

Embodiment 2

[0045] This embodiment provides a reflective large depth of field true three-dimensional augmented reality display glasses, such as image 3 As shown, it includes a timing lighting module 1 embedded in the temple, an information display module 2, a control module 4, a reflector 5 and a prism 9, and an information combination module 3 integrated in the lens. Described information display module 2 is made of reflective digital micromirror (DMD) microdisplay 23 and lens array 22, reflective digital micromirror (DMD) microdisplay 23 and lens array 22 are arranged axially along the mirror leg, prism 9 and The mirror 5 converts the optical path. The sequence lighting module is composed of three LED point light sources 11, 12, 13, and the distances from the center of the LED point light sources to the center of the information display module are different. The LED point light source emits approximate spherical waves, and the approximate spherical waves are coupled through the prism ...

Embodiment 3

[0050] This embodiment provides a reflective large depth of field true three-dimensional augmented reality display glasses, such as Figure 4 As shown, it includes a sequential lighting module 1 embedded in the temple, an information display module 2, a control module 4, and an information combination module 3 integrated in the lens. The sequence lighting module is composed of three LED point light sources 11, 12, 13, and the distances from the center of the LED point light sources to the center of the information display module are different. The information display module 2 is composed of a reflective liquid crystal on silicon (LCOS) microdisplay 24 and a lens array 22 . The lens array is a Fresnel lens array with a focal length of F, and the LCOS microdisplay is located at 0.1F within one focal length of the object side of the lens array. In this embodiment, the LED point light source is located in front of the information display module 2, and emits an approximate spheric...

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Abstract

The invention discloses a large-depth-of-field true three-dimensional augmented reality display method and system. An information display module group formed by a micro display device and a lens arrayis irradiated by a plurality of point light sources and a virtual true three-dimensional image is obtained in three-dimensional space; and information of the virtual true three-dimensional image is superposed to a realistic objective environment by the information display module group to realize true three-dimensional augmented reality displaying. The micro display device is not arranged at a doubled focal length of the lens array and the superposition depths of the virtual true three-dimensional image are different under point light source irradiation at different positions. Therefore, problems that the depth of field of the image is limited in the current augmented reality display system, a conflict between the focusing of an observer and a convergence competition exists in the currentaugmented reality display system and the depth-of-field control mechanism is complicated and the response speed is low of the current augmented reality display system can be solved; and thus real-time-response 3D image augmented reality displaying of the large-depth-of-field true three-dimensional image is realized.

Description

technical field [0001] The invention relates to the field of augmented reality, in particular to a method and system for displaying true three-dimensional augmented reality with a large depth of field. Background technique [0002] Augmented reality technology is a technology that superimposes information generated by digital methods (including virtual objects, scenes, data, images, etc.) into the real world to enhance the user's perception of the objective environment. It has a very broad application prospect. With the advancement of technology, various augmented reality technologies and systems have been developed. The augmented reality display system currently on the market is mainly based on the principle of binocular parallax, and uses free-form surfaces, prisms, waveguides and other devices to project two-dimensional images into people's eyes to form stereoscopic vision. This technology cannot provide true three-dimensional information, which will cause the user's fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22G02B27/01
CPCG02B27/0101G02B30/27
Inventor 楼益民吴锋民胡娟梅
Owner ZHEJIANG SCI-TECH UNIV
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