A real three-dimensional light field helmet display system

Abstract

The invention discloses a display system of a light field helmet with a true stereo feeling. The display system comprises one or more display devices of the light field helmet, and each display device of the light field helmet comprises an optical rendering implementing module, a micro display device, a microstructure array device and an optical eyepiece system, wherein the micro display device, the microstructure array device and the optical eyepiece system are sequentially arranged. Beam splitting is conducted on the light emitted by different pixels of the micro display device through the microstructure array device, and then a space optical field is formed. By means of for the feature size p of an array, it is ensured that light beams formed by at least two pixels are different in direction. Through the method, the dense space light field conforming to the human eye natural vision can be provided, the space light field is changed through the optical eyepiece system and can be generated only in an exit pupil of an optical eyepiece, and in other words, the view area of the light field display system is controlled within a range capable of being observed by a single eye; thus, the problem that aggregation and convergence of the human eyes are inconsistent in the helmet display is solved.

Description

technical field [0001] The invention relates to the field of virtual reality and augmented reality, in particular to a light field helmet display system for realizing real stereoscopic effect. Background technique [0002] The display device is an important part of the human-computer interaction interface in the field of virtual reality and augmented reality. On the one hand, the helmet-mounted display, as a near-eye display device, has become a research and development in the field of display in recent years due to its mobility, convenience and privacy. On the other hand, with the emergence of 3D movies, three-dimensional display has entered people's field of vision, and people have begun to apply head-mounted displays to the field of three-dimensional display. [0003] In the field of three-dimensional display, the image to be displayed provided has stereoscopic information, that is to say, the provided image has a certain depth, and the virtual object to be displayed is i...

AI Technical Summary

Problems solved by technology

[0003] In the field of three-dimensional display, the image to be displayed provided has stereoscopic information, that is to say, the provided image has a certain depth, and the virtual object to be displayed is imaged in the front and back of the focal plane. The traditional head-mounted display can only give human eyes Provide the display information of a single focal plane. In order to see the object clearly, the human eye needs to adjust the lens of the human eye to make the human eye focus on this focal plane. The greater the difference between the depth of the virtual object and the depth of the focal plane, the difference between the convergence and convergence of the human eye It will be bigger, which will cause discomfort when people observe

[0005] Among them, the main method of the zoom surface helmet display is to quickly change the position of the imaging focal plane in the helmet display device during the use of the helmet display, so as to realize the rapid change of the position of the screen observed by the human eye along the depth direction. Specifically, it can be changed by changing The position of the image plane and the position of the optical system can be achieved by using liquid lenses, deformable mirrors, birefringent lenses or other electrically controllable ways to change the focal length of the optical system in the head-mounted display, but if the period of rapidly changing the position of the imaging plane is short Due to the persistence of vision of the human eye, there will be a problem of reconstructing multiple focal planes in front of the human eye

[0006] The solution of the multi-focal head-mounted display is to use multiple display devices in the head-mounted display, or to split one display device into multiple ones for use. In the process of designing the entire system, multiple display devices are stacked. In use, and multiple display devices form observation planes with different depths in space, increasing the number of display devices will alleviate the problem of convergence and inconsistency of the human eye, but the focal plane established in space is limited. It still does not reach the amount of spatial depth that the human eye can perceive, and does not fully conform to the attributes of real objects in the space observed by the human eye, and cannot completely solve the contradiction caused by the inconsistency of convergence and convergence of the human eye

[0007] Whether it is a head-mounted display with zoom plane or a multi-focal plane, it realizes three-dimensional display based on the principle of binocular parallax. A display device, or inserting a beam splitter or an electrically controllable zoom device will increase the complexity, volume and weight of the system, and will increase the discomfort perceived by the human body due to the increase in the complexity, volume and weight of the system, and even cause The system is too bulky to wear

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