CN111326047A - Compact high-brightness display system for flight simulator view - Google Patents
Compact high-brightness display system for flight simulator view Download PDFInfo
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- CN111326047A CN111326047A CN201911372601.4A CN201911372601A CN111326047A CN 111326047 A CN111326047 A CN 111326047A CN 201911372601 A CN201911372601 A CN 201911372601A CN 111326047 A CN111326047 A CN 111326047A
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- G09B9/00—Simulators for teaching or training purposes
- G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
- G09B9/08—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of aircraft, e.g. Link trainer
- G09B9/30—Simulation of view from aircraft
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Abstract
The invention relates to a high-brightness small-volume display system for a flight simulator visual scene. The projection system comprises a curved screen, a spherical collimating mirror and a projection system; the curved screen is composed of a white scatterer. The spherical collimating lens is located at a certain position below the curved screen, and can reflect images on the curved screen to human eyes after collimation, so that infinite far virtual images are presented on the human eyes. The projection system firstly projects a visual image generated by a computer onto the spherical collimating lens, then the spherical collimating lens reflects the image onto the curved screen, and the image on the screen enters human eyes through the spherical collimating lens again. This compresses the space occupied by the projection system and orthographically projects in front of the curtain, thereby increasing brightness. The invention can realize high-brightness display of the visual system, increase the adjustable range of the light intensity of the display system, realize high-efficiency utilization of the cockpit space, and has very important practical significance for vivid display and optimal design of the visual system of the cockpit.
Description
Technical Field
The invention relates to the field of visual display of flight simulators, in particular to a visual compact high-brightness display system of a flight simulator, aiming at solving the practical problems of large light loss, limited image brightness adjustment range and large volume of the existing visual display.
Technical Field
The flight simulator cockpit simulator is a testing and training device which simulates the state, environment and condition of the flight simulator when the flight simulator executes a task and provides similar control load, vision, hearing and motion feeling for a pilot. The aircraft cockpit simulator is a typical human-in-loop simulation system, can be used for engineering optimization design and personnel training, has extremely high safety and economy, and particularly is used for performing simulation training on fighters by inputting battlefield environment data into a system in advance during combat training, so that the combat effect can be greatly improved, the combat expense can be saved, and the casualties can be reduced.
Since more than 70% of the information of the aircraft pilot comes from the vision, the vision system is a key component of any cockpit simulator, and the fidelity thereof directly determines and influences the application and development of the simulator. The visual system is generally composed of three parts, namely a database (geography and scene), an image generator and a hardware display system. The display can be divided into real image and virtual image according to the principle of display imaging and the nature of the image finally displayed to the flight crew. The virtual image is formed by converging light reflection extension lines, does not need to be supported by a display screen, and has the characteristic of strong depth perception, and the virtual image display system mainly comprises a coaxial virtual image display system and a paraxial virtual image display system.
The coaxial virtual image display system consists of a display, a spectroscope and a collimating mirror, wherein the collimating mirror is a spherical reflecting mirror and is formed by grinding glass or plating a reflecting layer on a smooth surface, and an object positioned on a focal plane of the collimating mirror can form an upright infinite virtual image. The spectroscope is designed into a lens with 50% transmittance and reflectivity, and is placed on a focal plane of the collimating mirror, so that half of light emitted from the surface of the display is reflected to the collimating mirror after passing through the spectroscope, the collimating mirror reflects about 90% of the light to the spectroscope, and only 22.5% of the initial light is left to become final effective light after being attenuated by the spectroscope by 50%, and the final effective light is actually lower than 22.5% of the initial light, so that the light loss of the display system is large, and the image brightness is low. Secondly, because of belonging to the coaxial optical system, when the observer deviates far from the optical axis, the observed image distortion is larger, and the method is only suitable for one person to watch the image. Moreover, since the beam splitter can reflect light in the cockpit, the display system is greatly interfered by external stray light, and the image contrast is reduced. Finally, due to the limitation of the structure of the display system, the viewing angle of the display system is relatively small, the horizontal viewing angle generally does not exceed 50 degrees, and the vertical viewing angle does not exceed 35 degrees. Due to its many disadvantages, as projection devices are reduced in price, they have been gradually replaced by paraxial virtual image display systems.
The existing paraxial virtual image display system mainly comprises a projector, a spherical collimating mirror and a rear projection screen, wherein the spherical collimating mirror is usually made of a vacuum negative pressure layer of reflecting film on a precise smooth spherical frame, the rear projection screen is a curved hard screen, the rear projection screen is obtained by processing a mould hot-pressing flat organic glass through a special coating process and is arranged on a focal plane of the spherical collimating mirror, and an image on the rear projection screen is an erected infinite-distance virtual image through the spherical collimating mirror. Due to the off-axis mode, the display system has obvious advantages that the radius of the spherical collimating lens can reach 3-3.5 meters, the horizontal field angle can reach 150-220 degrees, and the vertical field angle can reach 40-50 degrees. Compared with a coaxial virtual image display system, the spherical collimating mirror is obliquely arranged in front of a driver, an eye point is not on an optical axis, stray light near a cabin cannot be reflected into a field of view of the driver through a spherical surface, and image distortion is not large when an observer keeps away from the optical axis. The rear projection screen in the conventional paraxial virtual image display system has good diffusion effect, small light loss and high brightness, can approximate to the brightness in the air, and is widely applied in practice at present.
The actual light intensity changes continuously with the passage of time, and the light intensity in the noon time is obviously higher than that in the morning and evening time. However, in the conventional paraxial virtual image display system, the light intensity adjustment range is very limited due to the transmission attenuation of light rays when the light rays pass through the rear projection screen, the adjustment range can not reflect the change of external light intensity along with time at all, and the brightness displayed at noon is basically not different from the brightness displayed at morning and evening. Therefore, it is a problem to be solved urgently to further improve the brightness of the paraxial virtual image display system. In addition, in the existing paraxial virtual image display system, the projector and the spherical collimating lens are respectively arranged on two sides of the rear projection screen, a longer distance exists between the projector and the rear projection screen, and the limited space in the cockpit cannot be effectively utilized.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a compact visual high-brightness display system of a flight simulator, which can realize the high-brightness display of the visual system, increase the adjustable range of the light intensity of the display system and realize the efficient utilization of the cockpit space by replacing a rear projection screen in the conventional paraxial virtual image visual display system with a spherical reflection projection screen, and particularly has very important practical significance for the vivid display and the optimized design of the visual system of the cockpit when the navigation small airplane simulator cabin is limited.
In order to achieve the above object, the idea of the present invention is: the utility model provides a special ultrashort burnt projection system, projection system is located curved surface screen side below, and the position of sight is not sheltered from to people's eye visual field top, and projection system projects the image on the collimation spherical mirror earlier, then through the reflection of collimation spherical mirror, projects on the curved surface screen. The image on the curved screen then again enters the human eye via reflection from the collimating mirror. Thus, the two collimating mirror surfaces are shared, so that the space volume is compressed besides the light loss caused by a rear projection system is avoided.
Finally, the invention provides that the projection system is positioned below the curved screen and below the visual field of human eyes, the visual field of human eyes is not blocked, and then the projection system directly projects the image onto the curved screen. This also achieves the purpose of increasing brightness and reducing volume.
According to the inventive concept, the invention adopts the following technical scheme:
the utility model provides a flight simulator looks compact high brightness display system, includes curved surface projection screen, sphere collimating mirror and projection system, its characterized in that: the curved surface projection screen and the spherical collimating lens are oppositely arranged, so that an image on the curved surface projection screen enters human eyes after being reflected by the spherical collimating lens, and a virtual image is formed in the human eyes; the projection system is positioned below the side of the curved screen, and at a position which does not shield the sight above the visual field of human eyes, the projection system projects an image onto the collimating spherical mirror, and then the image is projected onto the curved projection screen through the reflection of the collimating spherical mirror; then the image projected on the curved surface projection screen enters the human eyes through the reflection of the spherical collimating mirror again.
Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable technical progress:
according to the invention, the spherical collimating lens is positioned at a certain position below the curved screen, so that the image on the curved screen can be reflected to human eyes after being collimated, and an infinite virtual image is presented on the human eyes. The projection system firstly projects a visual image generated by a computer onto the spherical collimating lens, then the spherical collimating lens reflects the image onto the curved screen, and the image on the screen enters human eyes through the spherical collimating lens again. This compresses the space occupied by the projection system and orthographically projects in front of the curtain, thereby increasing brightness. The invention can realize high-brightness display of the visual system, increase the adjustable range of the light intensity of the display system, realize high-efficiency utilization of the cockpit space, and has very important realistic meaning for vivid display and optimal design of the visual system of the cockpit.
Drawings
FIG. 1 is a schematic diagram of a paraxial display system employing a projection system that shares a spherical collimating mirror.
FIG. 2 is a perspective view of a paraxial display system employing a single projection system that shares a spherical collimating mirror.
FIG. 3 is a perspective view of a paraxial display system employing a plurality of projection systems sharing a spherical collimator.
FIG. 4 is a schematic diagram of a paraxial display system with a projection system positioned directly below the field of view of the human eye.
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. 1-4, the compact high-brightness visual display system of the flight simulator comprises a curved surface projection screen (1), a spherical collimating mirror (2) and a projection system (3), and is characterized in that: the curved surface projection screen (1) and the spherical collimating lens (2) are arranged oppositely, so that an image on the curved surface projection screen (1) enters human eyes after being reflected by the spherical collimating lens (2), and a virtual image is formed on the human eyes; the projection system (3) is positioned below the side of the curved screen (1), the position of the human eye above the visual field does not shield the sight line, and the projection system (3) projects an image onto the collimating spherical mirror (2) firstly, and then the image is projected onto the curved projection screen (1) through the reflection of the collimating spherical mirror (2); then the image projected on the curved surface projection screen (1) enters human eyes through the reflection of the spherical collimating lens (2).
Example two:
as shown in fig. 1, the curved screen (1) is a projection screen, and a projection system (3) is required to be used, the projection system (3) is located below the side of the curved screen (1), and the position of the sight line is not blocked above the visual field of human eyes, and the projection system (3) projects an image onto the collimating spherical mirror (2) first, and then projects the image onto the curved screen (1) through the reflection of the collimating spherical mirror (2). The projected image is then reflected again by the collimating mirror into the human eye. Fig. 3 is a perspective view. In order to increase the angle of view in the horizontal direction, as shown in fig. 3, a plurality of projection systems may be distributed along a circular arc line in the horizontal direction, each projection system having symmetry in space.
Example three:
as shown in fig. 4, the projection system (3) is located below the curved screen (1), and directly projects an image onto the curved screen (1) at a place below the human eye visual field where the visual line is not obstructed.
In conclusion, the invention adopts various display schemes, can realize high-brightness display of the visual system, increases the adjustable range of the light intensity of the display system, realizes high-efficiency utilization of the cockpit space, and has very important practical significance for vivid display and optimal design of the visual system of the cockpit.
The embodiments of the present invention have been described 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 visual compact and high brightness display system of the flight simulator of the present invention are not departed from.
Claims (2)
1. Flight simulator looks compact high brightness display system, including curved surface projection screen (1), sphere collimating mirror (2) and projection system (3), its characterized in that: the curved surface projection screen (1) and the spherical collimating lens (2) are arranged oppositely, so that an image on the curved surface projection screen (1) enters human eyes after being reflected by the spherical collimating lens (2), and a virtual image is formed on the human eyes; the projection system (3) is positioned below the side of the curved screen (1), the position of the human eye above a visual field does not shield the sight line, and the projection system (3) projects an image onto the collimating spherical mirror (2) firstly, and then the image is projected onto the curved projection screen (1) through the reflection of the collimating spherical mirror (2); then, the image projected on the curved surface projection screen (1) enters human eyes through the reflection of the spherical collimating mirror (2).
2. The flight simulator view compact high brightness display system according to claim 1, characterized in that the projection system (3) is located below the curved projection screen (1), projecting the image directly onto the curved screen (1) in a place below the human eye field of view where the line of sight is not obstructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372601.4A CN111326047A (en) | 2019-12-27 | 2019-12-27 | Compact high-brightness display system for flight simulator view |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911372601.4A CN111326047A (en) | 2019-12-27 | 2019-12-27 | Compact high-brightness display system for flight simulator view |
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| CN111326047A true CN111326047A (en) | 2020-06-23 |
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| CN201911372601.4A Pending CN111326047A (en) | 2019-12-27 | 2019-12-27 | Compact high-brightness display system for flight simulator view |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114859537A (en) * | 2022-04-21 | 2022-08-05 | 芜湖汽车前瞻技术研究院有限公司 | Display device and vehicle |
| WO2024032059A1 (en) * | 2022-08-11 | 2024-02-15 | 华为技术有限公司 | Projection apparatus, display device, vehicle and projection method |
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| CN105045027A (en) * | 2015-08-12 | 2015-11-11 | 中国人民解放军95995部队 | Front projection-type virtual image display method and display system |
| CN106707478A (en) * | 2017-01-12 | 2017-05-24 | 北京航宇荣康科技股份有限公司 | Off-axis virtual image display system of free-form surface projection screen |
| CN106781832A (en) * | 2017-01-06 | 2017-05-31 | 上海大学 | A kind of aircraft cockpit what comes into a driver's is highlighted system |
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2019
- 2019-12-27 CN CN201911372601.4A patent/CN111326047A/en active Pending
Patent Citations (4)
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| CN105045028A (en) * | 2015-08-12 | 2015-11-11 | 中国人民解放军95995部队 | Paraxial virtual image display system with superwide vertical field angle |
| CN105045027A (en) * | 2015-08-12 | 2015-11-11 | 中国人民解放军95995部队 | Front projection-type virtual image display method and display system |
| CN106781832A (en) * | 2017-01-06 | 2017-05-31 | 上海大学 | A kind of aircraft cockpit what comes into a driver's is highlighted system |
| CN106707478A (en) * | 2017-01-12 | 2017-05-24 | 北京航宇荣康科技股份有限公司 | Off-axis virtual image display system of free-form surface projection screen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114859537A (en) * | 2022-04-21 | 2022-08-05 | 芜湖汽车前瞻技术研究院有限公司 | Display device and vehicle |
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| WO2024032059A1 (en) * | 2022-08-11 | 2024-02-15 | 华为技术有限公司 | Projection apparatus, display device, vehicle and projection method |
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Application publication date: 20200623 |