Collimation virtual image visual system geometric deformation measurement method

Abstract

The invention discloses a geometric deformation measurement method for a collimation virtual image visual system, which comprises the following measurement steps: S1, establishing a 5-degree * 5-degree standard dot matrix, erecting theodolites at left and right eye spots, and generating the 5-degree * 5-degree standard dot matrix according to the designed eye spots; s2, establishing a virtual image dot matrix, and generating a virtual image dot matrix at an interval of 5 degrees by taking a standard dot matrix original point as a reference in a visual system; s3, collecting virtual image dot matrix data; and S4, processing measurement data. By designing the normalized collimation virtual image visual system geometric deformation measurement method, comparison data can be quickly and efficiently formed, mounting and debugging of a simulator mylar film and fusion correction of a projector are facilitated, and by designing the quick and efficient virtual image display system correction and debugging method with standardized characteristics, the method is easy to popularize and high in practicability. And the display quality of the collimation virtual image can be effectively improved.

Description

technical field [0001] The invention relates to the related technical field of collimation virtual image vision, in particular to a method for measuring geometric deformation of a collimation virtual image vision system. Background technique [0002] In the flight simulator, multiple projectors can be used for image fusion and splicing, the horizontal field of view can reach 180 degrees, and the vertical field of view can reach 40 degrees. The projectors are projected onto the rear projection screen and then transmitted to the Mylar film. Finally, the light reflected by the Mylar film enters the human eye, which can form an infinite virtual image display, which is generally called the collimated virtual image technology. However, in the actual application process, the layout setting of the Mylar film cannot reach the ideal surface, and the image distortion caused by the splicing and fusion of multi-projection images often occurs in the flight simulator. [0003] In the prio...

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Problems solved by technology

However, in the actual application process, the layout setting of the Mylar film cannot achieve the ideal surface, and the image distortion caused by the fusion of multi-projection images often occurs in the flight simulator.

[0003] In the prior art, the measurement of collimated virtual image distortion is generally conducted by engineers based on their own practical experience, and generally meets the distortion requirements in AC-60 of the Civil Aviation Administration: "The uniform angular spacing of a 5° square does not exceed ±1°, and the distance between adjacent squares The angular spacing should not exceed the tolerance range of ±1.5°", this requirement is too broad, and the measurement method is too dependent on the engineer's practical experience, the adjustment effect is quite different, and engineering experience is difficult to form a strict written requirement, so the measurement The methods cannot be unified, and the measurement skills are difficult to pass on

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