Rotating Extended Lens Imaging Module for Projection Systems
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Solution Overview
Problem
Projection systems face limitations in maintaining original image display ratios when rotating images 90°, leading to reduced magnification factors and potential damage due to improper orientation and heat dissipation issues.
Innovation Solution
An imaging module with an extended lens device that can rotate to project images along perpendicular directions, allowing for reciprocal display ratios and increased magnification without compromising the original image size or stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projection system rotates the image 90° to change display ratio from 4:3 to 3:4, then the display ratio is changed, but the magnification factor is reduced and shadows appear on the screen
Solution Approach 1:
The patent introduces a new spatial dimension by adding an extended lens device that can rotate around the optical axis. This allows the projection system to achieve different display ratios (4:3 and 3:4) by rotating the lens device 90 degrees, while maintaining the original magnification factor. The lens device rotation occurs in a dimension perpendicular to the image plane, enabling ratio change without compromising magnification quality.
2Adaptability or versatility
If the projection system body is rotated to change orientation, then the display ratio is changed, but the bulb may be damaged and heat dissipation is compromised
Solution Approach 1:
The patent separates the orientation-changing function from the main projection system body by introducing an independent extended lens device. This segmentation allows the lens device to rotate and change display orientation without moving the entire projection system, thereby protecting the bulb and maintaining proper thermal management while achieving versatile display orientations.
Solution Approach 2:
The extended lens device acts as an intermediary component between the projection system body and the screen. It absorbs the rotational movement required to change display ratios, shielding the main system (including the bulb and cooling mechanisms) from physical repositioning while still enabling orientation flexibility.
3Area of stationary object
If software scaling is used to fill the screen, then the screen is fully utilized, but the image is deformed and display ratio is incorrect
Solution Approach 1:
The patent replaces software-based image scaling with a mechanical/optical solution. By physically rotating the extended lens device, the system optically adapts the image to fill the screen correctly without deformation. This substitution of mechanical/optical means for software processing preserves image accuracy while achieving full screen utilization.
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 effective projection of images with reciprocal display ratios, maintaining original image size and preventing damage from improper orientation, while improving heat dissipation by avoiding vent hole blockage.
Implementation Method 1
The extended lens device is further capable of rotating around the first direction with respect to the body to either a second direction or a third direction
Data Source
AI summary
The invention provides an imaging module disposed on a projection system. The imaging module comprises an extended lens device, which connects to the image outlet of the body of the projection system by a rotation mechanism. By rotating the rotation mechanism, the projection system may optionally project images through the extending lens device onto the screen in two perpendicular directions, of which the image ratio of the two images are reciprocal.