Grid Mirror Device Three-Axis Deflection for Image Alignment
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Solution Overview
Problem
Conventional mirror devices struggle to accurately align light beams onto desired surfaces, often resulting in image distortion and incomplete projections due to the limitations of their rotational axes and mirror element alignments, especially when used in compact devices like mobile phones or PDAs.
Innovation Solution
The method involves displacing the first and second mirror elements through specific compensation angles in addition to their primary deflection angles, allowing for a third deflection angle that tilts the light beam, thereby improving alignment accuracy and reducing image distortion without enlarging the mirror elements, and ensuring better image resolution and perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional mirror devices use only two rotational axes for light beam deflection, then the device structure remains simple, but alignment accuracy and image quality deteriorate due to inability to compensate for surface distortions
Solution Approach 1:
The patent introduces a third rotational axis (x-axis) in addition to the conventional two axes (y-axis and z-axis), transforming the mirror element's rotation capability from two-dimensional to three-dimensional. This additional degree of freedom enables independent compensation of surface distortions and improves alignment accuracy without overly complicating the device structure
Solution Approach 2:
The patent implements dynamic adjustment of rotation angles (α, β, γ) to compensate for surface distortions. By changing the angular parameters of the mirror element's orientation around the three rotational axes, the system can adaptively correct alignment errors and maintain high image quality on uneven surfaces
2Manufacturing precision
If mirror elements are displaced through additional compensation angles, then image distortion is reduced and resolution is improved, but the device requires more complex control mechanisms
Solution Approach 1:
The patent employs feedback control by detecting the actual position and orientation of the light beam after reflection from the uneven surface, comparing it with the desired position, and then adjusting the mirror element's rotation angles accordingly. This closed-loop control system automatically compensates for distortions and maintains high image resolution
Solution Approach 2:
The system performs preliminary calculation and determination of the required compensation angles based on the known characteristics of the projection surface. By pre-computing the necessary adjustments to rotation angles α, β, and γ, the system can proactively compensate for expected distortions before they affect image quality
3Adaptability or versatility
If the light beam is deflected through a third deflection angle, then complete image projection is achieved without impingement on support surfaces, but the alignment process becomes more complex
Solution Approach 1:
The introduction of the third rotational axis enables the light beam to be deflected in an additional dimension, allowing the projected image to be tilted and oriented to avoid impingement on support surfaces. This three-dimensional deflection capability ensures complete image projection even when the projection surface is at an angle
Solution Approach 2:
The patent implements dynamic adjustment of the mirror element's orientation around all three rotational axes based on the required projection geometry. The system can adaptively change the deflection angles in real-time to accommodate different projection scenarios and ensure complete image delivery without support surface interference
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 approach enables precise alignment and minimizes image deformation, preventing partial projections onto support surfaces and maintaining high resolution without the need for complex electronic corrections, thus providing a clear and complete image even when used in compact devices.
Implementation Method 1
a first mirror element (32) and a second mirror element (34) which are alignable with one another in such a way that a reflection of the first mirror element (32) is incident onto the second mirror element (34)
Implementation Method 2
a first mirror element (32) and a second mirror element (34) which are alignable with one another in such a way that a reflection of the first mirror element (32) is incident onto the second mirror element (34)
Data Source
AI summary
A method is described for aligning a light beam, having the steps of: deflecting the light beam by way of a first mirror element and a second mirror element, the first mirror element being displaced through a first deflection angle around a first rotation axis, and the second mirror element being displaced through a second deflection angle around a second rotation axis inclined with respect to the first rotation axis, and the second mirror element being additionally displaced through a third deflection angle around a third rotation axis that is inclined with respect to the second rotation axis, and the first mirror element being displaced around a first mirror normal line of the first mirror element through a first compensation angle defined for the third deflection angle, and/or the second mirror element being displaced around a second mirror normal line of the second mirror element through a second compensation angle defined for the third deflection angle.