Paraxial virtual image display system with superwide vertical field angle

Abstract

The invention discloses a paraxial virtual image display system with a superwide vertical field angle, belonging to the technical field of virtual image display of a flight simulator. The display system comprises a projector, a projection screen and a spherical reflector, wherein the projection screen is a rear projection screen, the distance between the projection screen and the spherical reflector is less than twice focal length of the spherical reflector, the projection screen is shaped as a tire surface, the rotation axis of the projection screen and the rotation axis of the spherical reflector are same straight line, the radius of the projection screen is less than the distance from the projection screen to the rotation axis, the sphere center of the spherical reflector is higher than the upper end surface of the spherical reflector, and the circle center of the projection screen is higher than the sphere center of the spherical reflector. The vertical field angle of the paraxial virtual image display system can reach 60 degrees, and different requirements of flight simulation training are met on the premise that the characteristics of high field depth, strong three-dimensional sense and the like of the paraxial virtual image display system are ensured.

Description

technical field [0001] The invention relates to the technical field of virtual image display of flight simulation simulators, in particular to a paraaxial virtual image display system with a super large vertical viewing angle. Background technique [0002] The rangefinder virtual image display system is currently a commonly used display system for flight simulation simulators, and is especially suitable for flight simulation simulators with left and right double-seat cockpits. The paraxial virtual image display system has the advantages of good depth of field, strong stereoscopic effect, high brightness, good contrast, and high imaging resolution, and the parallax between the left and right pilots is small during simulated takeoff and landing, which is convenient for crew coordination. [0003] The current rangefinder virtual image display system mainly includes a projector, a projection screen and a spherical mirror. Wherein the projection screen is a rear projection proje...

AI Technical Summary

Problems solved by technology

But along with training close to the requirement of actual combat, the vertical field of view of existing paraxial virtual image display system can't meet the needs, such as the lower field of view (i.e. figure 1 The angle between OC' and OB' in the horizontal direction) is required to reach 40°

[0004] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the vertical viewing angle of the existing paraxial virtual image display system is small, and cannot meet the requirements of simulated flight training

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