AR (augmented reality) adjustable transparent projection screen, projection method and manufacturing method

Abstract

The invention discloses an AR (augmented reality) adjustable transparent projection screen, a projection method and a manufacturing method. The projection screen sequentially comprises AG glass, a holographic projection film, a PDLC adjustable light film, a one-way perspective film and ultra-white glass. The projection method comprises the following steps: enabling one side of AG glass to face a projector, and enabling one side of the ultra-white glass to face outdoors, wherein when an observer watches from the side of the AG glass, the light projected by the projector forms primary imaging onthe holographic projection film, and the light projected by the projector forms secondary imaging on the PDLC dimming film; and when the light on one side of the ultra-white glass is bright, the hazeof the PDLC dimming film is adjusted, so that the projection effect and the perspective effect are observed to the optimal state. According to the manufacturing method, the method comprises the steps: pasting the holographic projection film on the surface of AG glass, pasting the one-way perspective film on the surface of ultra-white glass, integrating optical components and assembling optical components. The holographic projection film is used for primary imaging to project images, the PDLC adjustable light film is used for secondary imaging, and the secondary imaging is superposed on the primary imaging, thereby improving the imaging effect is enhanced while the perspective effect of the projection screen is ensured.

Description

technical field [0001] The present invention relates to an augmented reality adjustable transparent projection screen, a projection method and a manufacturing method, in particular to a transparent projection screen for realizing real-scene augmented reality with adjustable perspective effects and display effects under natural light, belonging to the augmented reality display technology field. Background technique [0002] Augmented Reality (AR for short), as an important means of human-computer interaction and information display technology in the near future and in the future, is widely used in civil, commercial and military fields, especially in aviation, aerospace, marine engineering, petrochemical, communication , construction, advertising, games, tourism education and other industries, its research and development and application are in the ascendant. AR technology superimposes computer-generated virtual objects, scenes, system prompt information, or information from ...

AI Technical Summary

Problems solved by technology

At present, these several implementation methods have many deficiencies in the realization effect, and are greatly restricted in practical applications.

The first method (head-mounted display), this method uses a head-mounted fixture (usually a helmet or a frame), fixes a small piece of lens at a short distance in front of the observer, and projects enhanced information on the lens. The augmented reality display effect can be realized after superimposing the real world scene seen by the observer through the lens. This display method can only be worn by individuals, and the device composition is relatively complicated, the cost is high, and the comfort (such as dizziness) after wearing , poor display effect under strong background light, etc.), the user experience is not good, and it is mainly used in professional fields at present, and it is also used in commercial high-end fields, but not widely, and it is rarely used in public and engineering applications; the second method (Camera display) Although the technology is relatively simple and the implementation cost is low, but because various display screens are opaque, such a display screen can only present the images captured by the camera, but cannot present the real world environment behind the screen at the same time, and cannot be truly superimposed Enhanced information and images of the real world, and subject to some performance effects of the camera, the effect is greatly reduced. Although it is widely used at present, it mainly focuses on simple applications of consumer electronics products, and is rarely used in professional fields, public and engineering applications. ; Although the third method (transparent screen display) realizes superimposing and enhancing information in the real world, the implementation technology is complicated. At present, the self-luminous OLED screen has the disadvantages that the transparent screen technology is not popular, the cost is high, and the size of the screen is greatly affected by natural light. Problems such as limitations (for example, the size and specifications of OLED screens are small and difficult to customize) are greatly restricted in actual development and application; and LCD transparent screens, which are widely used in advertising boxes, are mature in technology and low in price, but there are also problems. There are insurmountable defects such as ghosting and halo in the real scene after perspective caused by multi-layer gratings, and dim enhanced information on the screen due to no backlight. It can only be applied in closed environments such as advertising boxes, and cannot be applied in natural open environments. Therefore, At present, this method is greatly limited in actual development and application, and there is no mature product launch

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