Adjustment Mirror for Image Reading Optical Systems
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Solution Overview
Problem
In image reading optical systems, the combination of plural image-forming mirrors with power in non-coaxial configurations leads to precision errors and difficulty in converging focusing positions, requiring extensive adjustments and potentially failing to achieve target values.
Innovation Solution
Incorporating an adjustment mirror with power only in one direction, allowing for precise adjustment of focusing positions in both the longitudinal and lateral directions, while minimizing interference with other optical system components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple image-forming mirrors with power in non-coaxial configurations are used, then the optical system can guide reflected light to the image reading unit, but precision errors occur and focusing positions become difficult to converge
Solution Approach 1:
The optical system segments the focusing adjustment function by introducing a dedicated adjustment mirror that has optical power in only one direction. This separate component handles focusing adjustments independently, while other mirrors maintain their primary optical path guidance functions, thereby eliminating interference between multiple powered mirrors and achieving precise focusing convergence.
Solution Approach 2:
The adjustment mirror is designed with localized optical power characteristics - it has power in only one specific direction rather than in all directions like traditional image-forming mirrors. This local quality allows it to perform focusing adjustments without interfering with the optical path guidance functions of other mirrors, resolving the precision convergence issue.
2Manufacturing precision
If multiple image-forming mirrors are adjusted to achieve precise focusing positions, then accurate image reading can be achieved, but extensive adjustment time is required
Solution Approach 1:
The adjustment function is extracted from the multiple image-forming mirrors and concentrated into a single dedicated adjustment mirror. This extracted component is responsible solely for focusing adjustments, eliminating the need to coordinate adjustments across multiple mirrors and significantly reducing the time required to achieve precise focusing positions.
Solution Approach 2:
The adjustment mirror acts as an intermediary component between the light source and the image reading unit. It mediates the focusing function separately from the other mirrors that handle optical path guidance, allowing for quick and independent focusing adjustments without affecting the overall optical system configuration.
3Adaptability or versatility
If adjustment mirrors with power in multiple directions are used, then comprehensive optical control is achieved, but interference with other optical system components increases
Solution Approach 1:
The adjustment mirror is designed with asymmetric optical power distribution - it has power in only one direction rather than symmetric power in all directions. This asymmetry allows it to perform focusing adjustments without creating the kind of interference that would result from multiple mirrors each having power in multiple directions, thereby reducing overall system complexity.
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 simplifies the adjustment process, reduces the time required for convergence, and ensures accurate focusing positions, even when adjusting one mirror, thereby improving the overall precision and efficiency of the image reading optical system.
Implementation Method 1
plural image-forming mirrors that guide reflected light, which is acquired by reflecting light from a light source in a reading target, to the image reading unit
Data Source
AI summary
Provided is an image reading optical system including an image reading unit in which plural reading devices are arranged in a first direction, and plural image-forming mirrors that guide reflected light, which is acquired by reflecting light from a light source in a reading target, to the image reading unit, wherein any one of the plural image-forming mirrors is an adjustment mirror that has power only in one of the first direction and a second direction intersecting the first direction, and is rotatable or relatively movable with respect to the other image-forming mirrors.