Image Reading Apparatus Light Reflection Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image reading apparatuses face issues with misalignment of light reflection members, leading to degraded image quality due to separate supporting structures for the light source and light guide, causing positional displacement and uneven light distribution.
Innovation Solution
The image reading apparatus employs a common supporting member for all light reflection members, with the third light reflection member acting as a light guide to enhance alignment and light gathering, and incorporates a light diffusion board to address uneven brightness from the point light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate supporting structures are used for the light source and light guide, then the device can be assembled independently, but misalignment occurs leading to degraded image quality
Solution Approach 1:
The patent combines the light source and light guide into a single integrated support structure. The light guide is positioned and fixed relative to the light source within the same support, eliminating misalignment issues between separately supported components while maintaining assembly feasibility through modular design of the integrated unit.
2Illumination intensity
If multiple separate light reflection members are used, then light can be guided effectively, but positional displacement occurs causing uneven light distribution
Solution Approach 1:
Multiple light reflection members are integrated into a single support structure with fixed relative positions. This ensures precise alignment and consistent light distribution while maintaining the light-guiding effectiveness of multiple reflection surfaces.
Solution Approach 2:
The support structure serves multiple functions simultaneously: it holds the light source, positions the light guide, and secures multiple light reflection members in precise alignment. This multi-functional design ensures both effective light guidance and positional accuracy.
3Device complexity
If a point light source is used, then the device structure can be simplified, but brightness unevenness occurs in the reflected light
Solution Approach 1:
A light diffusion board is introduced as an intermediary component between the point light source and the light reflection members. This diffusion board scatters the light from the point source to create more uniform illumination while maintaining the simplicity of using a point light source.
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 minimizes misalignment and enhances image quality by ensuring precise alignment of light reflection members and reduces brightness unevenness, resulting in improved image reading performance.
Implementation Method 1
multiple light reflection members that guide the reflected light, reflected off the original document, to the light receiving portion
Implementation Method 2
At least one of the multiple light reflection members is used as a light guide to guide light from the light source to the original document
Data Source
AI summary
An image reading apparatus includes a light source that emits light that is to be applied to an original document, a light receiving portion that receives reflected light, which is reflected off the original document, and multiple light reflection members that guide the reflected light, reflected off the original document, to the light receiving portion. At least one of the multiple light reflection members is used as a light guide to guide light from the light source to the original document.