Ring screen showing or projecting system unit based on two anisotropy fish-eye lenses

Abstract

The invention discloses a ring-screen projection / projection system unit based on a ditropic fisheye lens, which includes a ring-screen projection / projection functional unit and a ring-screen projection film source production unit, wherein the projection / projection lens used is innovative and realizable Ditropic fisheye lens with specific object-image mapping relationship. Using this type of lens to construct a functional unit, under the premise of high pixel conversion efficiency, a single projection / projector can realize efficient projection / projection of a circular screen with a maximum central angle of 190° and a maximum field of view ratio of 10:1. Through the combination of functional units, it can meet the projection / projection requirements of projecting different field of view ring screens. Combined with the use of mature image fusion and splicing technology, it can project a perfect picture on the ring screen with a central angle of 360°. It simplifies the configuration in the ring screen image project, reduces the difficulty of installation and debugging in the project, and later maintenance, and improves the reliability of the system. It can be applied to theaters, exhibition halls, and can be used to construct small table display systems.

Description

technical field [0001] The present invention relates to a digital image ring screen projection / projection system unit, in particular to a device for projection / projection based on a ditropic fisheye lens combined with a digital projection / projector and a player for circular and similar circular screens The projection / projection system unit can be used to actually construct a projection / projection project with a ring screen as the projection object, such as a ring screen theater, a ring screen exhibition hall, and a small table-top ring screen rear projection TV. It belongs to the application of non-similar ultra-wide-angle optical imaging technology and computer image processing technology in the field of film and television. Background technique [0002] The ring screen is a screen whose shape is or approximates to a complete ring or a partial ring. The surface structure of this type of screen belongs to the double quadric surface type, and it has different origins in two d...

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Problems solved by technology

[0006] In view of the above-mentioned status quo, the present invention aims to solve the problem that the existing ring screen projection / projection functional units are difficult to simultaneously take into account the large field of view ratio and high pixel conversion efficiency, and to solve the problem of combining multi-functional units to splice and project large field of view ratios compared to ring screens or full rings. There are many problems that need to be projected / projectors on the screen, the process and engineering configuration are cumbersome and complex, and it cannot be miniaturized or large-scaled. However, it provides a functional unit that can form a large field of view ratio and has a high pixel conversion efficiency. A ring-screen projection / projection system unit based on a ditropic fisheye lens

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