Movable Projector Lens Switching During Repositioning
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Solution Overview
Problem
Existing projection devices experience inconvenience and interruption in image viewing due to the time required for lens changes when switching between short and long focal length lenses for near and far-distance projections, and they lack efficient movement and lens adjustment mechanisms.
Innovation Solution
A movable projection device with a first and second lens of different focal lengths, equipped with a lens driver and sensors, that identifies projection positions and adjusts lenses dynamically during movement, allowing simultaneous lens changes and device movements to minimize waiting times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projection device changes lenses between short and long focal length for near and far-distance projections, then the projection capability is improved, but the waiting time during lens changes increases
Solution Approach 1:
The system identifies the target projection position in advance and pre-determines which lens should be used before the actual projection begins. This allows the lens to be ready when needed, eliminating waiting time during lens changes.
Solution Approach 2:
The projection device is made movable with dynamic positioning capabilities. The device can move to optimal positions for each projection scenario, and the lens selection is dynamically adjusted based on real-time position and projection distance requirements.
2Adaptability or versatility
If the projection device moves to different positions for near and far-distance projections, then the projection flexibility is improved, but the complexity of movement and lens adjustment mechanisms increases
Solution Approach 1:
A single movable projection device is designed to perform multiple functions: it can project at different distances (near and far), change positions dynamically, and switch between different focal length lenses. This multi-functional design avoids the need for multiple separate projection devices.
Solution Approach 2:
The system uses sensors to detect the projection position and environment, then feeds this information back to the control unit. Based on this feedback, the control unit automatically determines the optimal lens to use and adjusts the device position, creating a closed-loop control system that simplifies operation despite mechanical 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
Enables seamless transitions between near and far-distance projections by reducing wait times during lens changes and maintaining continuous image playback, enhancing user experience.
Implementation Method 1
a projector including: a first lens having a first focal length, and a second lens having a second focal length greater than the first focal length, where the projector is configured to project image content through a projection lens that is one of the first lens and or the second lens
Data Source
AI summary
A movable projection device includes: a projector including: a first lens having a first focal length, and a second lens having a second focal length greater than the first focal length, where the projector is configured to project image content through a projection lens that is one of the first lens and or the second lens; a lens driver configured to change the projection lens through which the image content is projected; a memory storing instructions; and at least one processor configured to execute the instructions to: identify a position at which the image content is to be projected, based on the position at which the image content is to be projected, identify whether to move the movable projection device and identify whether to change the projection lens, control the lens driver to change the projection lens in a moving state of the movable projection device.