Horizontal Image Projection Apparatus Gravity Control
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Solution Overview
Problem
Existing image projection apparatuses face challenges in achieving high precision movement of image generation units due to the influence of gravity, requiring complex control mechanisms, especially when moving in directions orthogonal to the optical axis.
Innovation Solution
An image projection apparatus with a movable unit holding the image generation unit, driven by an electromagnetic actuator, is configured to move horizontally, allowing precise control and reducing the complexity of driving conditions by aligning the movement direction with the installation surface, thus minimizing the impact of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the movable holding unit is moved back-and-forth in a vertical direction to shift the image on the projection surface, then the image can be shifted, but the influence of gravity requires complex control for driving the movable holding unit
Solution Approach 1:
The patent changes the movement direction from vertical to horizontal, utilizing the orthogonal direction to avoid gravitational influence. This dimensional change allows the movable holding unit to be driven by simple electromagnetic forces without needing to counteract gravity, thereby reducing control complexity while maintaining movement precision.
2Manufacturing precision
If the movable holding unit is moved back-and-forth to obtain high-resolution projection image, then the resolution is improved, but the complexity of driving conditions increases due to gravity influence
Solution Approach 1:
By reorienting the movement to a horizontal direction, the patent eliminates the need for complex driving conditions that would be required to counteract gravity in vertical movement. This allows the image generation unit to be moved precisely for high-resolution projection without increasing device complexity.
3Device complexity
If the movable holding unit is moved horizontally, then the influence of gravity is minimized and control is simplified, but additional mechanisms may be required to achieve precise movement
Solution Approach 1:
The patent replaces complex mechanical control systems with electromagnetic actuation. The electromagnetic force can be precisely controlled to move the movable holding unit horizontally with high precision, eliminating the need for complex mechanical mechanisms while achieving the required movement accuracy.
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
This configuration enables high-precision movement of the image generation unit, increasing the resolution of the projection image without the need for additional mechanisms and reducing the risk of malfunction due to temperature rise, while simplifying the driving conditions and reducing costs.
Implementation Method 1
driven by an electromagnetic actuator
Data Source
AI summary
There is provided a image projection apparatus including an image generation unit for generating an image by using light emitted from a light source, comprising: a movable unit configured to hold the image generation unit and to be able to change a position of the image generation unit; and a drive unit configured to drive the movable unit to move, wherein the movable unit is disposed to move horizontally.