RU2713994C1 - Device for representing moving images - Google Patents

Abstract

FIELD: mass entertainment; data processing.

SUBSTANCE: invention relates to the field of entertainment and educational complexes using virtual reality and can be used in entertainment, advertising, education and culture. Disclosed device for presenting moving images comprises a projector, a reverse projection screen and a transparent reflective screen, wherein the projector and the reverse projection screen are located on the movable platform with the possibility of simultaneous vertical and / or horizontal movement. Besides, transparent reflecting screen can be installed at an angle, mainly 45°, relative to reverse projection screen.

EFFECT: enabling dynamic change of the virtual image perspective without loss of image quality and without need to control the focusing of the image source.

1 cl, 1 dwg

Description

Technical field

The invention relates to the field of entertainment and educational complexes using virtual reality and can be used in the field of entertainment, education and culture, for example, in advertising, presentation, entertainment or educational equipment, as part of exhibition stands, means of informing the public and other similar means.

State of the art

The prior art device is disclosed in the patent for invention EP 2335117, published 06/22/2011, which implements the method of creating the Ghost Pepper. This device contains a reflective and transparent screen to create a virtual image. The device is equipped with a rear projection screen, changing the distance between which and the projector allows you to create the illusion of moving a virtual image.

In addition, a prior art device for presenting moving images against a scene is disclosed in US Pat. No. 5,865,519 published on 02/02/1999, which is closest to the claimed invention, which includes a projector, a transparent smooth foil and a rear projection screen made with the possibility of vertical movement. When you change the position of the back projection screen, the virtual image changes its position relative to the viewer.

The disadvantage of the above devices is that in the known technical solutions it is impossible to obtain a movable virtual image focused at any moment of its movement, due to a change in the distance between the image source and the rear projection screen.

Disclosure of Invention

The technical result to which the claimed invention is directed is to provide a dynamic change in the perspective of a virtual image without loss of image quality and without the need to control the focus of the image source.

The specified technical result is achieved due to the fact that in the device for presenting moving images containing a projector, a rear projection screen and a transparent reflective screen, a projector and a rear projection screen are rigidly mounted on a mobile platform configured to vertically and horizontally move relative to the transparent reflective screen. In this case, the transparent reflective screen can be installed at an angle, mainly 45 °, with respect to the rear projection screen.

Also, the dynamic platform can be made with the possibility of rotational movement, mainly around an axis perpendicular to the plane of the transparent reflective screen.

As a transparent reflective screen, a translucent mirror or a similar film mounted on the frame can be used. As a rear projection projector, it is advisable to use the corresponding short-focus or ultra-short-throw rear projection projector. The size of the transparent reflective screen may be 3500 by 6000 mm or 4000 by 8000 mm or more. The size of the area in which the projector is moving with a rear projection screen can be 6000 by 6000 by 3000 mm or more.

Installing a projector and a rear projection screen on a single mobile platform while maintaining a constant distance between them, regardless of platform movement, allows you to dynamically change the perspective of a virtual image without losing image quality and without the need to control the focus of the image source.

In the particular case, to the specified dynamic change in perspective, you can add the effect of dynamic rotation of the image. The rotation of the platform around an axis perpendicular to the screen realizes the effect of dynamic image rotation. The combination of dynamic changes in the perspective of the image and its rotation allows you to implement a new type of visual effects.

The generated image, depending on the degree of reflection / transmission of the transparent reflective screen, the angle of its inclination, can relate to the field of two-dimensional 2D, three-dimensional 3D (built on the principle of the Pepper's ghost illusion) and transitional type of images.

Brief Description of the Drawings

The invention is illustrated in the drawing, where in FIG. 1 shows a diagram of a device.

An embodiment of the invention

A device for presenting moving images includes a projector 1, a rear projection screen 2 and a transparent reflective screen 3. The projector 1 and the rear projection screen 2 are rigidly mounted on a mobile platform 4, which is made with the possibility of vertical (up - down) and two-sided horizontal (left - right ) movement.

To create a variable perspective of the virtual image, the mobile platform 4 moves up - down and / or right - to the left and, accordingly, the projector 1 and the rear projection screen 2 are moved. As a result, the light forming the virtual image from the projector 1 falls on the rear projection screen 2 and further, to the transparent reflective screen 3. Due to the fact that when the platform 4 moves, the distance between the projector and the rear projection screen remains unchanged, the virtual image will move, but always be the focus for the audience.

Claims (2)

1. A device for presenting moving images comprising a projector, a rear projection screen and a transparent reflective screen, characterized in that the projector and the rear projection screen are rigidly mounted on a mobile platform configured to vertically and / or horizontally move relative to the transparent reflective screen. 2. The device according to claim 1, characterized in that the transparent reflective screen is installed at an angle of 45 ° with respect to the rear projection screen.

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