CN111128052A

CN111128052A - A large field of view visual system based on rotating linear array display image source

Info

Publication number: CN111128052A
Application number: CN201911372291.6A
Authority: CN
Inventors: 屠晓伟; 杨建明; 杨庆华; 何伟康
Original assignee: Beijing Transpacific Technology Development Ltd
Current assignee: Beijing Transpacific Technology Development Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-05-08

Abstract

The invention relates to a large field of view display system based on rotating line array display pixels. It includes line array display pixels and spherical collimating mirrors; the line array display pixels are rotated to generate a ring-shaped curved screen. The spherical collimating mirror is located at a certain position below the annular curved screen. The spherical collimating mirror can reflect the image on the curved screen to the human eye after collimating, and present an infinite virtual image at the human eye. The present invention can be used in a virtual image display system in a flight simulator, and can increase the brightness and the viewing angle, while reducing the volume. The present invention can also be used in a 360° surround imaging device, and can realize no dead angle display in all horizontal directions, which has very important practical significance.

Description

Large-view-field visual system based on rotary linear array display image source

Technical Field

The invention relates to a large-view-field visual system based on a rotary linear array display image source, and belongs to the field of optical engineering and novel display.

Technical Field

At present, although a flexible OLED screen provides a possibility for realizing a curved screen, a planar OLED screen can only realize a ruled surface similar to a cylindrical surface and a conical surface by a folding mode, and cannot generate a curved surface of a non-ruled surface, such as a spherical surface and the like. The curved liquid crystal screen also exists in the form of a ruled surface. The method has the advantages that more curved screens are realized, and the method has very important application value, for example, a virtual image display system of the flight simulator needs to use the curved screens to clearly display the visual scene with depth sense. The existing method is to project an image on a curved surface by a projection system by making a curved white screen. This approach requires the use of a projection system, and the brightness and contrast of the image and the image source are low. To create a larger screen, multiple projection systems need to be used to achieve this by stitching, which increases the cost and complexity of the system and makes seamless fusion of the images at the stitching seams difficult. Meanwhile, the curved white curtain is also difficult to manufacture.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a large-view-field visual display system based on a rotary linear array display image source, which can realize a large-view-field and high-brightness virtual image visual display system,

in order to achieve the above object, the idea of the present invention is: and generating a curved screen by rotating linear array display image sources distributed on the curve. Due to the effect of persistence of vision of the human eye, the human eye is able to perceive a coherent picture when the speed of rotation is sufficiently fast. The number of the linear array display image sources in each rotating system can be one, two in cross arrangement, four or more in rice arrangement. The greater the number of strips, the lower the rotation speed that allows formation of a coherent image. The rotating shaft of the linear array display image source is superposed with the central shaft of the curved surface collimating mirror.

According to the inventive concept, the invention adopts the following technical scheme:

a large-view-field display system based on a rotary linear array display image source comprises a linear array display image source and a curved surface collimating mirror, and is characterized in that the linear array display image source is composed of image sources distributed on a curve, a 360-degree surrounding curved surface screen is generated by rotation, and a rotating shaft of the linear array display image source is overlapped with a central shaft of the curved surface collimating mirror. The image on the curved surface screen enters human eyes after being reflected by the curved surface collimating mirror, and a virtual image is formed at the human eyes.

The pixel distribution of the linear array display image source is one or more than one pixel distribution which is arranged in a mode of symmetry through a rotation central axis.

The curved surface collimating mirror surface is a spherical surface or a tire surface with a symmetrical rotating shaft.

Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable technical progress:

the profile of the curve is obtained by theoretical calculation of optical aberrations so that the final aberrations are minimal. Light rays emitted by the linear array display pixels are converted into quasi-parallel light to enter human eyes after being reflected by the curved surface collimating mirror. Because the central axis of the curved surface collimating mirror is coincident with the rotating axis of the linear array display pixel, the curved surface collimating mirror has symmetry in all directions of 360 degrees.

As an application, the rotating linear array display image source can be used in a virtual image display system of a flight simulator or a 360-degree panoramic simulator, such as a person is blown in the air by wind power, and then a virtual distant scene can be seen, so that the feeling of being personally on the scene is generated.

Drawings

FIG. 1 is a flight simulation virtual image display system using a rotating linear array to display an image source according to the present invention.

Fig. 2 is a 360-degree aerial panoramic display system of the present invention using two rotating linear arrays to display an image source.

Fig. 3 is a 360-degree aerial panoramic display system of the present invention using four rotating linear arrays to display image sources.

Fig. 4 is a structural schematic diagram of a linear array display image source.

Fig. 5 is a schematic diagram of an optical path for displaying an image source by using a rotating linear array.

Detailed Description

The invention will be described in further detail below with reference to the drawings and preferred embodiments. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.

The first embodiment is as follows:

referring to fig. 1 to 5, a large-view-field display system based on a rotating linear array display image source comprises a linear array display image source 1 and a curved surface collimating mirror 2, and is characterized in that the linear array display image source 1 is composed of image sources distributed on a curve, a 360-degree surrounding curved surface screen is generated by rotation, and a rotating shaft of the linear array display image source 1 coincides with a central shaft of the curved surface collimating mirror. The image on the curved screen enters human eyes after being reflected by the curved collimating mirror 2, and a virtual image is formed at the human eyes.

Example two:

this embodiment is substantially the same as the first embodiment, and is characterized in that:

the pixel distribution of the linear array display image source 1 is one or more than one pixel distribution which is arranged in a mode of symmetry through a rotation central axis. The surface type of the curved surface collimating mirror 2 is a spherical surface or a tire surface with a symmetrical rotating shaft.

Example three:

as shown in fig. 1, the linear array display image source 1 is used to generate an image through rotation, and the image is reflected by the spherical collimating mirror 2 and enters the eyes of the person in the cockpit to form a virtual image. The linear array display image source 1 is connected to a rotating shaft 4 through a connecting rod 3, and the rotating shaft 4 is driven by a motor. Preferably, the linear array display pixels 1 are distributed axisymmetrically to maintain the balance of rotation, and may be one pair, two pairs, or more pairs. As shown in fig. 4, the linear array display pixel 1 is formed by arranging a plurality of image source points 1-1 on a curved substrate 1-2. The shape of the curved substrate is obtained by calculating aberration through ray tracing and optimizing according to an application scene, as shown in fig. 5, the shape is a flight simulation display system obtained through ray tracing, wherein 5 is a pupil of a human eye, and 6 is a linear array display image source 1 emitting rays.

Example four:

as shown in fig. 2 and 3, the curved collimating lens 2 surrounds 360 degrees to form a cabin, the rotating display pixel 1 coaxial with the curved collimating lens is arranged above the curved collimating lens, the bottom of the rotating display pixel is provided with an air outlet system 5, the upper surface of the rotating display pixel is provided with a transparent cylindrical surface protection glass 7, the top of the rotating display pixel is provided with a reticular protection sleeve 6, the air outlet system 5 blows people to the air through wind power, and through the transformation of display images, people floating in the air generate vivid jumping experience. Fig. 2 and 3 each show a system of different numbers of linear array display elements 1.

In summary, the method for displaying the image source by the rotary linear array can generate the annular curved screen, can be used for a virtual image viewing system in a flight simulator or a 360-degree annular simulation system, can realize high-brightness and large-view-field display, and has very important practical significance.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes and modifications can be made according to the purpose of the invention, and any changes, modifications, substitutions, combinations or simplifications made according to the spirit and principle of the technical solution of the present invention shall be equivalent substitutions, as long as the purpose of the present invention is met, and the present invention shall fall within the protection scope of the present invention as long as the technical principle and inventive concept of the large visual field viewing system based on the rotating linear array display image source of the present invention are not departed.

Claims

1. A large-view-field display system based on a rotary linear array display image source comprises a linear array display image source (1) and a curved surface collimating mirror (2), and is characterized in that the linear array display image source (1) is composed of image sources distributed on a curve, a 360-degree surrounding curved surface screen is generated through rotation, and a rotating shaft of the linear array display image source (1) is overlapped with a central shaft of the curved surface collimating mirror. The image on the curved screen enters human eyes after being reflected by the curved collimating lens (2), and a virtual image is formed at the human eyes.

2. The large-field-of-view display system for a rotating linear array display image source as claimed in claim 1, wherein the pixel distribution of the linear array display image source (1) is one or more arranged in a manner of being symmetrical through a rotation central axis.

3. The large-field-of-view display system for a rotating linear array display image source as claimed in claim 1, wherein the surface shape of the curved collimating mirror (2) is a spherical surface or a tire surface with a symmetric rotating axis.