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

Abstract

The invention discloses a ring screen showing or projecting system unit based on two anisotropy fish-eye lenses. The ring screen showing or projecting system unit based on the two anisotropy fish-eye lenses comprises a ring screen showing or projecting function unit and a ring screen projecting film source manufacturing unit. Showing or projecting lenses are the two anisotropy fish-eye lenses which are novel and can achieve a specific object-image mapping relationship. The lenses are used for constructing the function unit and under the condition of high pixel conversion efficiency, a single showing or projecting machine can perform high-efficiency showing or projecting on a ring screen with the maximum central angle of 190 degrees and the maximum field of view ratio of 10:1. The requirements for showing or projecting of ring screens with different field of view ratios can be met through combination of the function unit and perfect pictures can be projected on a whole ring screen with the central angle of 360 degrees by combining and using the mature picture merging and splicing technology. Configuration in ring screen image engineering is simplified, difficulty of installation, debugging and later-stage maintenance in the engineering is reduced, reliability of a system is improved and the ring screen showing or projecting system unit based on the two anisotropy fish-eye lenses is applicable to a cinema, an exhibition hall and is more suitable for constructing a small desk-mounted displaying system.

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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