JPH0921976A - Simulated view display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the portion which does not become a picture and to obtain a picture which is approximately focused to a point at infinity by optically placing the infinitely focused portion of the video to the rotationally symmetrical position centered around the point of view of a trainee. SOLUTION: The device consits of recessed surface mirrors 2a to 2c placed at the front of the trainee, screens 3a to 3c placed in the vicinity of the focuses of the mirrors and slightly up direction of the trainee and projectors 4a to 4c which project the video to the screens 3a to 3c from the inclined up and behind direction of the trainee. The optical placement within an angular range of 5b (the range in which a unit simulated field-of-view display optical system generates easy to see video) is rotated to the amount of angles 5a and 5c centered around an eye point 1 of the trainee. Within the respective angular ranges of 5a to 5c, the video focused on the screens 3a to 3c surfaces are displayed as virtual images focused at the point near infinity by the mirrors 2a to 2c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simulated field-of-view display device used for aircraft training and the like.

[0002]

2. Description of the Related Art As a conventional technique, as shown in FIG. 3, a concave mirror 2 located in front of a trainee 1 and a rear screen 3 located near the focal plane of the concave mirror 2 and diagonally above the trainee. And a projector 4a, 4b, 4c that projects an image onto the rear screen 3 from diagonally above the trainee, and the image formed on the screen surface is reflected by the concave mirror 2
Accordingly, there is a device that displays an image near infinity as a virtual image. FIG. 3 is a plan view of such a simulated visual field display device. The structure viewed from the side is roughly as shown in FIG.

In this device, since the concave mirror 2 and the rear screen 3 do not have the same spherical center position, the relationship between the position of the concave mirror 2 and the rear screen 3 (a in the figure) depends on the angle viewed by the trainee.
And b) are different, the virtual image distance is different, and there is a drawback that the part that is not close to infinity is not an image. In addition, making the spherical center positions of the concave mirror 2 and the rear screen 3 coincide
Other devices (eg cockpit control device, cockpit, etc.)
It is difficult in relation to.

[0004]

In the above-mentioned prior art,
When viewed from one angle at the trainee's viewpoint position and when viewed from another angle, the concave mirror and the screen have different spherical centers, so their positional relationship changes, and the virtual image distance is not close to infinity, and it does not become an image. Part arises.

The present invention removes a portion which is not an image,
The purpose is to provide images close to infinity.

[0006]

According to the present invention, an optical arrangement of a portion of an image near infinity is arranged rotationally symmetrically around a trainee's viewpoint position.

That is, an optical device composed of a rear screen, a concave mirror and a projector is divided into unit optical devices, the spherical centers of which are matched, and then combined and combined.

[0008]

As a result, an image in which the virtual image distance over the entire field of view is closer to infinity can be obtained.

[0009]

1 is a plan view of an embodiment of the present invention, and FIG.
Is shown in the end view (FIG. 1A-A). In this example, a,
Three unit optical devices b and c are arranged in series.

At this time, the a-, b-, and c-unit simulated field-of-view display optical system must be constructed in a range in which an easily viewable image is produced.

1 is the viewpoint of the trainee, 2a, 2b and 2c are concave mirrors, 21a, 21b and 21c are the spherical centers of the concave mirrors, 3a,
3b and 3c are screens, 31a, 31b and 31c are spherical centers of the screens, 4a, 4b and 4c are projectors, 5
Reference numerals a, 5b and 5c represent angles (ranges). The screens 3a, 3b, 3c are located near the focal plane of the concave mirror. These are obtained by rotating the optical arrangement in the range of the angle 5b around the operator's viewpoint with the angles 5a and 5c. In each range of the angles 5a, 5b, 5c of 2, the image formed on the screen surface is displayed as a virtual image by the concave mirror, which is close to infinity. Since the same unit optical arrangement as the angle 5b is rotated and arranged by the angles 5a and 5c, the same image as the angle 5b can be displayed.

Further, it is needless to say that such a unit optical system is not limited to three, and a wider display screen can be constructed by arranging a plurality of unit optical systems side by side.

[0013]

According to the present invention, since the optical arrangement in which the virtual image is close to infinity is partially arranged rotationally symmetrically, an image close to infinity of the virtual image can be obtained in the entire visual field.

Further, a wider field of view can be provided if necessary.

[Brief description of drawings]

FIG. 1 is a plan view of one embodiment of the present invention.

FIG. 2 is an end view of an embodiment of the present invention.

FIG. 3 is a plan view of a conventional example.

[Explanation of symbols]

1 pilot's viewpoint 2 concave mirror 2a concave mirror, 2b concave mirror, 2c concave mirror 3 screen 3a screen, 3b screen, 3c screen 4a projector, 4b projector, 4c projector.

Claims (2)

[Claims] 1. A concave mirror located in front of the trainee, a screen located near the focal plane of the concave mirror and diagonally above the trainee, and a projector for projecting an image on the screen from diagonally above the trainee. A simulated visual field display device in which the constructed optical system is arranged rotationally symmetrically around the trainee's viewpoint position. 2. An optical device comprising a projector, a rear screen arranged in front of the projector for displaying an image of the projector, and a concave mirror for enlarging an image of the rear screen arranged in a direction of an image display surface of the rear screen. Then, the concave mirror and the rear screen are arranged so that the ball centers of the rear screens are close to each other to form a unit optical device, and a plurality of ball cores of the unit optical device are arranged side by side so as to be at different positions. Characteristic simulated field-of-view device.