CN215642207U

CN215642207U - Projection device in panoramic rear projection spherical screen vision system

Info

Publication number: CN215642207U
Application number: CN202121260816.XU
Authority: CN
Inventors: 马斌; 王庆丰; 徐雅冬; 李秀凯
Original assignee: Beijing Rocky Aerospace Technology Co ltd
Current assignee: Beijing Rocky Aerospace Technology Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2022-01-25
Anticipated expiration: 2031-06-07

Abstract

The projection device in the panoramic rear projection spherical screen vision system can ensure that the brightness of a projection picture of the system is consistent, the color reducibility of the system is not obviously changed compared with an image source for visual observation, and the training effect of strong immersion can be better realized. The projection device in the panoramic rear projection spherical screen vision system comprises a top cover (1) and a main body (2), wherein the main body is symmetrical up and down and is provided with a door-shaped inlet (3), the projection device comprises 7 projectors (4), the projectors are uniformly distributed in a main visual area of the rear projection spherical screen along the circumference and avoid the door-shaped inlet, and each projector is vertically installed.

Description

Projection device in panoramic rear projection spherical screen vision system

Technical Field

The utility model relates to the technical field of optical device processing and manufacturing, in particular to a projection device in a panoramic rear projection spherical screen vision system.

Background

Because the flight simulator is used for flight training, the flight simulator has the outstanding advantages of improving training efficiency, saving training expenditure, ensuring flight safety, reducing environmental pollution and the like, and therefore the research and development and the use of the flight simulator are more and more emphasized in the field of aerospace. The visual display system is an important component of the flight simulator, can enable a driver to be in a real-time visual simulation environment, can perform information interaction with the simulated visual environment outside the cabin, and enables the driver to have an immersive feeling.

In order to bring a driver with stronger immersion, the applicant develops a rear projection dome for use in a visual display system, and the utility model name is as follows: a rear projection dome of a visual display system, the patent application number is: 2020108148036. the rear projection spherical screen of the visual display system comprises a projector, a projection picture is projected onto the rear projection spherical screen, an optical eye point is arranged at the center of the rear projection spherical screen, the main body of the rear projection spherical screen is an annular curved surface side wall, and the horizontal curvature radius R corresponding to each point on the annular curved surface side wall₁Less than the corresponding vertical radius of curvature R₂。

However, the layout of the projector is important to achieve a training effect with a greater sense of immersion.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a projection device in a panoramic rear projection spherical screen vision system, which can ensure that the brightness of the projection picture of the system is consistent, the color reducibility of the system is not obviously changed compared with the image source for visual observation, and the training effect of strong immersion can be better realized.

The technical scheme of the utility model is as follows: the projection device in the panoramic rear projection spherical screen vision system comprises a top cover (1) and a main body (2), wherein the main body is symmetrical up and down and is provided with a door-shaped inlet (3), the projection device comprises 7 projectors (4), the projectors are uniformly distributed in a main visual area of the rear projection spherical screen along the circumference and avoid the door-shaped inlet, and each projector is vertically installed.

Because of the door-shaped entrance, the utility model adopts 7 projectors which are uniformly distributed in the main visual area of the rear projection dome screen along the circumference and avoid the door-shaped entrance, so that each projector covers a 45-degree visual field; each projector is vertically installed, the main body of the rear projection spherical screen is vertically symmetrical, if the projector is horizontally installed, only the middle part of the main visual area has the strongest visual field brightness, and the other parts are weaker, and the vertical installation can ensure that the brightness of the projection picture of the system is consistent, the color reducibility of the system and the image source have no obvious change in contrast visual observation, and the training effect of strong immersion can be better realized.

Drawings

Fig. 1 shows a schematic structural diagram of a projection device in a panoramic rear projection dome view system according to the present invention.

FIG. 2 is a schematic diagram of a projection device in a panoramic rear projection dome viewing system according to the present invention

Fig. 3 shows a block diagram of a plane mirror according to the utility model.

Detailed Description

As shown in fig. 1 and 2, the projection device in the panoramic rear projection dome screen vision system comprises a top cover 1 and a main body 2, wherein the main body is symmetrical up and down and is provided with a portal 3, the projection device comprises 7 projectors 4, the projectors are uniformly distributed in the main vision area of the rear projection dome screen along the circumference and avoid the portal, and each projector is vertically installed.

Because of the door-shaped entrance, the utility model adopts 7 projectors which are uniformly distributed in the main visual area of the rear projection dome screen along the circumference and avoid the door-shaped entrance, and a part of fusion belt is arranged between every two projectors, so that the horizontal visual field covered by a single projector exceeds 45 degrees, in the embodiment, 50-60 degrees; each projector is vertically installed, the main body of the rear projection spherical screen is vertically symmetrical, if the projector is horizontally installed, only the middle part of the main visual area has the strongest visual field brightness, and the other parts are weaker, and the vertical installation can ensure that the brightness of the projection picture of the system is consistent, the color reducibility of the system and the image source have no obvious change in contrast visual observation, and the training effect of strong immersion can be better realized.

Preferably, the projection apparatus further comprises 2 projectors 4 arranged above the top cover of the rear projection dome.

Preferably, the projection apparatus further comprises 1 projector 4 arranged above the portal of the rear projection dome.

In addition, there are fusion bands between the 7 projectors of the main body and the 3 projectors of the top, and they are not isolated.

Preferably, the brightness of the projector is 8000 lumens, and the screen parameter gain is 0.6.

Furthermore, a plane mirror is arranged between the rear projection spherical screen and the projector, and the light path is folded by using plane mirror reflection. The plane mirror is arranged, so that the optical path can be reduced, and the occupied space of the whole panoramic rear projection spherical screen vision system is saved.

Preferably, the plane mirror is disposed between 5% and 70% of the light cone of the projector. It should be noted that, when setting the plane mirror, the 7 projectors uniformly distributed on the main viewing area of the rear projection spherical screen along the circumference mainly consider shortening the light path as much as possible and preventing the projectors from entering the light path, so it is necessary to find the balance between them. The other 3 projectors do not need to consider the problem that the projectors enter the light path, but the light path is shortened as much as possible and the overlarge area of the plane mirror is avoided.

Preferably, as shown in fig. 3, the plane mirror is an optical front reflection mirror, and includes: the glass substrate comprises a glass substrate 5, a honeycomb plate 6, a glue layer 7 and a mirror base, wherein the honeycomb plate is fixed with the glass substrate through the glue layer, and is plated on the surface of the glass substrate and then is installed on the mirror base. Because the composite material with the honeycomb structure and the glass plate substrate are compositely formed, the plane mirror has the advantages of light weight, high strength, good rigidity and difficult cracking.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A projection arrangement in panorama rear-projection ball curtain visual system, the rear-projection ball curtain of visual system includes top cap (1) and main part (2), the main part is upper and lower symmetry and has portal entry (3), its characterized in that: the projection device comprises 7 projectors (4), the projectors are uniformly distributed in the main visual area of the rear projection dome screen along the circumference and avoid a door-shaped entrance, and each projector is vertically installed.

2. The projection device in a panoramic rear projection dome view system of claim 1, wherein: the projection device also comprises 2 projectors (4) which are arranged above the top cover of the rear projection spherical screen.

3. The projection device in a panoramic rear projection dome view system of claim 2, wherein: the projection device also comprises 1 projector (4) which is arranged above the portal of the rear projection spherical screen.

4. The projection device in a panoramic rear projection dome view system of claim 3, wherein: the brightness of the projector is 8000 lumens, and the screen parameter gain is 0.6.

5. The projection device in a panoramic rear projection dome view system of any of claims 1-4, wherein: and a plane mirror is arranged between the rear projection spherical screen and the projector, and the light path is folded by utilizing the plane mirror reflection.

6. The projection device in a panoramic rear projection dome view system of claim 5, wherein: the plane mirror is arranged between 5% and 70% of the light cone of the projector.

7. The projection device in a panoramic rear projection dome view system of claim 6, wherein: the level crossing adopts optical front reflection mirror, includes: the glass substrate comprises a glass substrate, a honeycomb plate, a glue layer and a mirror base, wherein the honeycomb plate is fixed with the glass substrate through the glue layer, and the surface of the glass substrate is plated and then is installed on the mirror base.