Hierarchical Projector Arrangement for Unobstructed Dome Projection
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Solution Overview
Problem
Traditional screen projection methods, such as orthogonal projection, often result in incomplete images due to light paths being shaded by audience seats, especially in irregularly shaped screens, which limits the immersive experience and is not applicable to all types of screens.
Innovation Solution
A screen projection system with hierarchically arranged projectors that avoid light paths over audience seats, using multiple groups of projectors to segment and splice sub-images to form a complete image, ensuring a 180-degree to 360-degree view angle, and allowing flexible installation and improved immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If orthogonal projection is used for dome screens, then the projection method is simple and widely applicable, but the audience seats block light paths causing incomplete images
Solution Approach 1:
The patent divides the projection system into multiple groups of projectors (first group for upper hemisphere, second group for lower hemisphere) that project different portions of the image separately. This segmentation allows each projector group to have unobstructed light paths while collectively forming a complete full-dome image, resolving the contradiction between simple projection method and image completeness.
2Reliability
If audience seats are installed behind projection light paths to ensure unobstructed light, then light paths are not shaded, but the audience cannot acquire full-degree display images
Solution Approach 1:
The patent transitions from traditional single-plane projection to three-dimensional full-dome projection by arranging projectors in multiple groups at different spatial positions (upper and lower hemispheres). This dimensional change allows the system to project images onto the entire inner surface of the dome screen, enabling audiences to view complete images from multiple angles without seats blocking light paths.
3Area of stationary object
If multiple projectors are arranged at the edge of the screen for orthogonal projection, then the projection coverage is expanded, but the device complexity increases
Solution Approach 1:
The patent segments the projection system into two distinct groups of projectors with clearly defined functional divisions: the first group projects onto the upper hemisphere and the second group projects onto the lower hemisphere. This segmentation simplifies the overall arrangement by creating modular, independent projector groups that can be installed and maintained separately, reducing the complexity associated with managing multiple projectors in a single complex configuration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures that projection light paths are not shaded by audiences, providing a full-degree display image and enhancing the immersive experience for viewers, regardless of the screen shape, and is applicable to various types of screens.
Implementation Method 1
a plurality of projectors are evenly arranged at the edge of the semi-spherical screen, and the plurality of projectors is configured to project images onto the inner wall of the screen
Data Source
AI summary
Embodiments of the present application provide a screen projection system, method and apparatus. The system includes a display screen, wherein the display screen is of a fully-closed or partially-closed housing structure, and an inner wall of the housing structure is configured to provide continuous images with a view angle of 180 degrees to 360 degrees in a horizontal direction. The system further includes: at least two groups of projectors, each group including at least one projector. The at least two groups of projectors are hierarchically arranged in a central axis direction of the display screen, each group of projectors is configured to carry out projection onto a portion of an inner wall of the display screen, and light paths of the at least two groups of projectors are configured to avoid audiences and seats. According to the present application, the technical solutions may be applied to different screens.