Adjustable Laser Touch Module for Projector
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Solution Overview
Problem
Current projector-laser touch module systems require the laser touch module to be installed on a wall or whiteboard border, limiting the area where writing actions can be sensed due to a fixed laser screen configuration, resulting in incomplete writing detection.
Innovation Solution
A holding apparatus for projectors that includes a frame, connection body, telescopic device, and detecting module, allowing for adjustable positioning of the laser source to match the projection image size and surface, enabling full-range sensing of writing actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the laser touch module is directly installed on a wall or whiteboard border, then the installation structure is simple, but the laser screen cannot match the projection image due to fixed positioning and safety distance requirements
Solution Approach 1:
The patent applies the dynamics principle by making the laser touch module position adjustable rather than fixed. The module can be moved along the projection direction to adjust the laser screen position, enabling the laser screen to match different projection image sizes and positions. This dynamic adjustment capability resolves the contradiction between simple installation and adaptability.
Solution Approach 2:
The patent segments the positioning function by separating the laser touch module from fixed installation locations. The module can be independently positioned at different locations along the projection path, allowing flexible adjustment of the laser screen position to match the projection image regardless of where the projector is installed.
2Device complexity
If the laser touch module is installed at a fixed position with safety distance, then the device structure is simple, but writing actions cannot be sensed at all locations on the projection image
Solution Approach 1:
The laser touch module is designed with dynamic positioning capability, allowing it to be adjusted to different positions along the projection direction. This enables the module to be optimally positioned to sense writing actions across the entire projection image area, improving detection completeness without significantly increasing device complexity.
3Device complexity
If the laser screen position is fixed relative to the projector, then the system configuration is simple, but the laser screen does not match the projection image size
Solution Approach 1:
The system employs dynamic adjustment of the laser touch module position to match different projection image sizes. The module can be moved along the projection direction to adjust the laser screen position and size, achieving precise matching with the projection image while maintaining relatively simple system configuration.
Data Source
AI summary
A holding apparatus for a projector includes a frame, a connection body, a telescopic device, and a bracket. The frame is fixed to a surface. One end of the connection body is connected to the frame. The telescopic device is fixed to the other end of the connection body opposite to the frame along an extending direction of the connection body. The telescopic device includes a moving unit movable along a first direction perpendicular to the extending direction of the connection body. The moving unit is connected to a detecting module. The bracket has a first end connected to the frame and a second end for connecting the projector. The second end is disposed opposite to the surface and extends along the first direction.