Projector Lens Deflection for 4K Resolution Projection
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Solution Overview
Problem
Conventional projectors cannot directly project 4K resolution images due to limited projection pixels, resulting in decreased image quality through pixel shift methods that convert and segment images, leading to defects like distortion.
Innovation Solution
A projection method and projector system that identify the original image's resolution and decide whether to deflect the projection lens, avoiding unnecessary conversion to 4K resolution and pixel shift by comparing it with preset resolutions, thereby projecting images directly at optimal resolutions like full HD without image quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the projector converts original images into multiple low-resolution images and projects them with pixel shift, then 4K resolution images can be projected, but image quality deteriorates due to distortion and deformation
Solution Approach 1:
The patent changes the operational parameters of the projection lens by deflecting it to different positions to project different low-resolution images sequentially. By controlling the lens deflection angle and position, the system achieves 4K resolution projection while managing image quality through selective lens positioning rather than maintaining a fixed lens position
Solution Approach 2:
The system employs periodic action by rapidly switching between multiple low-resolution images projected through the deflected lens at different angles. These images are projected in sequence at high frame rates, creating a periodic display pattern that the human eye perceives as a single high-resolution image due to visual persistence
2Measurement precision
If the projector converts original images into multiple images for pixel shift projection, then 4K resolution is achieved, but the processing complexity increases
Solution Approach 1:
The projection lens acts as an intermediary element that is deflected to different positions to project different images. This intermediary approach allows the system to achieve high-resolution projection without requiring complex image processing, as the lens deflection itself serves as the mechanism for generating multiple projected images from a single original image
3Manufacturing precision
If the projector uses lens deflection for high-resolution projection, then image quality is maintained, but the device complexity increases due to additional components
Solution Approach 1:
The projection lens serves multiple functions: it projects images at different resolutions and acts as a deflected element for creating multiple projected images. By making the lens multi-functional, the system achieves high-resolution projection with maintained image quality without adding separate complex subsystems, as the existing lens is utilized in multiple operational modes
Data Source
AI summary
A projection method is provided. The projection method comprises the steps of identifying the resolution of an original image, comparing the resolution of the original image with a preset resolution to generate a comparison result, determining whether to deflect a projection lens in a projection process according to the comparison result, and projecting at least one image in the projection process according to the comparison result.