Handheld Projector Lens Jitter Stabilization via Sensor Feedback
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Solution Overview
Problem
Hand-held projectors experience image jitter due to poor anti-jitter processing, leading to a blurred projected image and impaired user experience.
Innovation Solution
A method and apparatus that capture jitter data of the projection lens using a six-axis sensor, calculate jitter characteristic information, acquire offset data, and adjust the projection lens based on this data to stabilize the image, employing Euler angle variations mapped to pixel point information and adjusting the lens to counteract jitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hand-held projector is used for portability and diversification, then ease of operation and adaptability are improved, but image stability deteriorates due to jitter
Solution Approach 1:
The system applies preliminary anti-action by using sensors to detect jitter movements before they affect the projected image, then pre-compensates by adjusting the projection lens position in the opposite direction to counteract the upcoming jitter, thereby maintaining image stability while preserving hand-held portability
Solution Approach 2:
The system implements feedback by continuously monitoring jitter data through sensors, processing this information to determine offset data, and using this feedback loop to dynamically adjust the projection lens position, thereby resolving the contradiction between portability and image stability
2Stability of the object's composition
If anti jitter processing is added to stabilize the image, then image stability is improved, but device complexity increases
Solution Approach 1:
The system replaces complex mechanical stabilization mechanisms with a combination of sensors and computational processing. Instead of using heavy mechanical gimbals or stabilization mechanisms, the patent uses sensors to detect jitter and computationally determines offset data to adjust the projection lens, thereby achieving image stability with reduced mechanical complexity
Solution Approach 2:
The system applies parameter changes by monitoring jitter parameters through sensors and dynamically adjusting the projection lens position parameters based on calculated offset data. This allows the system to maintain image stability through software-controlled parameter adjustments rather than complex hardware modifications
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 solution effectively addresses image jitter in hand-held projectors, resulting in a stable and clear projected image by continuously adjusting the projection lens to counteract movement-induced jitter.
Implementation Method 1
capturing an acceleration and an angular velocity of jitter of the projection lens using a six-axis sensor
Implementation Method 2
capturing an acceleration and an angular velocity of jitter of the projection lens using a six-axis sensor
Data Source
AI summary
Embodiments of the present disclosure, provide a projection image anti jitter method and apparatus, and a projector. With the projection image anti jitter method, jitter data of a projection lens is captured; jitter characteristic information and offset data are acquired by calculation; and the projection image is adjusted based on the offset data.