Optical Reading Head Movable Mirror Clamps Alignment
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Solution Overview
Problem
Conventional optical reading heads face challenges in precisely adjusting magnification and correcting sloping movements of the optical path during assembly, leading to high magnification tolerance and difficulties in imaging objects accurately.
Innovation Solution
The integration of movable mirror clamps within the optical reading head, supported by protruding plates with guiding slots and bolt holes, allows for adjustable positioning of reflective mirrors to minimize magnification tolerance and correct optical path alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the lens position is adjusted to correct magnification, then magnification tolerance can be reduced, but the adjustment becomes difficult because the distance between the lens and image sensor is much smaller than the distance between the object and lens
Solution Approach 1:
The patent introduces movable mirror clamps as intermediary devices to adjust the position of reflective mirrors in the optical path. By adjusting the mirror positions rather than directly adjusting the lens position, the system achieves magnification correction with greater ease of operation while maintaining manufacturing precision
Solution Approach 2:
The patent segments the optical path adjustment into independent mirror position adjustments. Each reflective mirror can be adjusted separately using movable mirror clamps, allowing precise control of the optical path without requiring direct adjustment of the lens position, thus resolving the contradiction between precision and ease of adjustment
2Manufacturing precision
If the lens position is adjusted to correct sloping movement, then optical path alignment can be improved, but other optical elements may be affected or require re-adjustment
Solution Approach 1:
The patent divides the optical path correction function into separate adjustable components (movable mirror clamps for each reflective mirror). This segmentation allows independent adjustment of each mirror's position and angle, correcting sloping movement without affecting other optical elements, thus maintaining device simplicity while improving alignment precision
Solution Approach 2:
The patent introduces movable mirror clamps that enable dynamic adjustment of reflective mirror positions. This dynamic capability allows the optical path to be corrected for sloping movement while keeping other optical elements fixed, reducing assembly complexity compared to requiring re-adjustment of multiple components
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 solution enables precise adjustment of the optical path and magnification, reducing assembly errors and improving imaging accuracy by allowing for flexible positioning of reflective mirrors without altering other optical elements.
Implementation Method 1
The light reflected from the scanned object 11 is successively reflected by the plural reflective mirrors 102A, 102B, 102C, 102D and 102E
Implementation Method 2
The focused light is then imaged onto the image sensor 104
Data Source
AI summary
An optical reading device of a scanning apparatus includes a housing, two movable mirror clamps and two supporting plates. The housing contains therein a light source, a mirror set, a lens and an image sensor. These two movable mirror clamps are used for clamping both edges of a specific reflective mirror of said mirror set such that the position of said specific reflective mirror is adjustable by an assembler. These two supporting plates are protruded from opposite sides of said housing for supporting said movable mirror clamps.