Projector Image Boundary Adjustment via Motorized Lens Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current projectors require manual adjustments to ensure a projected image covers a flat area, increasing operation difficulty and complexity due to the need for repeated adjustments to match the projection plane size.
Innovation Solution
A method and projector system that automatically adjusts the projected image by photographing the coverage status, using a boundary detection algorithm to determine and correct the image boundaries, and controlling motors to adjust the focal length or position of the optical zoom lens to match the projection plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual adjustment of focal length is used to adapt projected image to projection plane, then the projected image can be adjusted to cover the flat area, but the operation difficulty and complexity increase
Solution Approach 1:
The projector automatically detects the projection plane boundaries and adjusts its own focal length through the motor drive unit, eliminating the need for manual intervention. The system photographs the projection plane, processes the image to detect boundaries, and automatically controls the lens to adapt the projected image size,实现ing self-service adjustment
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated system combining photography, image processing, and motor-driven lens control. The mechanical focal length adjustment is substituted by an automated feedback control system that uses image detection and motor drive to achieve adaptive adjustment
2Manufacturing precision
If manual adjustment of focal length is used to ensure flat coverage, then the projected image can be properly sized, but repeated adjustments increase operation complexity
Solution Approach 1:
The system implements a feedback control loop where the projector photographs the actual projection plane, processes the image to detect boundaries and calculate size mismatch, and uses this feedback information to automatically adjust the focal length. This closed-loop feedback eliminates the need for repeated trial-and-error adjustments by providing real-time correction based on actual projection conditions
Solution Approach 2:
The system performs preliminary detection of the projection plane boundaries and size characteristics before making focal length adjustments. By photographing and analyzing the projection plane in advance, the system determines the optimal focal length setting beforehand, avoiding multiple iterative adjustments and reducing operational complexity
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
The system reduces operation difficulty and complexity by automatically adjusting the projected image to cover a suitable area on the projection plane, ensuring optimal viewing quality without manual intervention.
Implementation Method 1
photographing a coverage status of the projected image on a projection plane to obtain a photographed image
Implementation Method 2
adjusting a focal length of an optical zoom lens of the projector
Implementation Method 3
controlling a zoom adjusting motor in the projector to adjust a focal length of an optical zoom lens of the projector
Data Source
AI summary
Disclosed are a method and a projector for adjusting a projected image. The method may include steps of: photographing a coverage status of the projected image on a projection plane to obtain a photographed image; detecting the photographed image according to a preset boundary detection algorithm to determine a boundary condition within the projected image in the photographed image; and adjusting, according to the boundary condition within the projected image in the photographed image, the coverage status of the projected image on the projection plane by controlling an adjusting motor in the projector until the adjusted coverage status of the projected image on the projection plane is adapted to the projection plane.