Infrared Cropping Optical Module with Integrated Calibration Sheet
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Solution Overview
Problem
Conventional optical scanning modules face challenges in accurately cropping documents with holes or irregular boundaries, and require complex assembly processes involving multiple background and calibration sheets, leading to inefficiencies and potential errors.
Innovation Solution
An infrared cropping optical module with integrated housing, linear optical sensing module, and infrared light source, utilizing calibration sheets to provide accurate cropping information and simplify assembly through a modular design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional background sheets and calibration sheets are used separately, then cropping information can be obtained, but assembly complexity increases and assembly errors occur
Solution Approach 1:
The patent combines the background sheet and calibration sheet into a single integrated sheet structure. The background sheet portion provides the scanning background while the calibration sheet portion provides reference markings for cropping information. This merging eliminates the need for separate assembly of multiple sheets, reducing assembly complexity and preventing assembly errors while maintaining accurate cropping information extraction.
Solution Approach 2:
The integrated sheet serves multiple functions simultaneously: it acts as the background sheet for optical scanning, provides calibration references for cropping boundary detection, and enables both functions through a single component. This multi-functionality resolves the contradiction by eliminating the need for separate specialized components.
2Measurement precision
If multiple separate sheets are assembled, then cropping and calibration functions are achieved, but assembly time increases
Solution Approach 1:
By merging the background sheet and calibration sheet into one pre-integrated component, the patent eliminates the time-consuming separate assembly process. The integrated sheet is installed as a single unit, dramatically reducing assembly time while preserving both cropping and calibration accuracy through the pre-configured structure.
3Ease of operation
If conventional separate sheet assembly is used, then document scanning is possible, but assembly errors cause scan errors
Solution Approach 1:
The integrated sheet design eliminates misalignment and positioning errors that occur when assembling separate sheets. The pre-configured relationship between background and calibration portions ensures reliable positioning, preventing scan errors while maintaining full scanning functionality.
4Adaptability or versatility
If duplex scan function is added with separate sheets, then double-sided scanning is enabled, but assembly becomes more complicated
Solution Approach 1:
The patent integrates background and calibration sheets into unified structures for both first and second scanning units. This merging approach maintains the complexity benefits for duplex functionality while the modular integrated design actually simplifies the overall assembly process compared to managing multiple separate sheets for each scanning unit.
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
The infrared cropping optical module effectively generates accurate visible light image data and cropping information for documents with holes or irregular boundaries, while reducing assembly complexity and costs through a modular, mass-producible design.
Implementation Method 1
receives reflected visible light
Implementation Method 2
receives the first infrared light transmitting through the calibration sheet and the medium to obtain a first visible light image
Implementation Method 3
a calibration sheet, which is disposed on an optical path of the first infrared light, and reflects external visible light
Implementation Method 4
receives the first infrared light transmitting through the calibration sheet
Data Source
AI summary
An infrared cropping optical module includes: a housing; a linear optical sensing module, which is accommodated within the housing, outputs visible light and receives reflected visible light and transmitting infrared light to obtain a visible light image, generated after the linear optical sensing module scans a medium, and cropping information corresponding to the visible light image; an infrared linear light source, which is accommodated within the housing, is disposed on one side of the linear optical sensing module, and outputs first infrared light; and a calibration sheet, which is disposed on an optical path of the first infrared light and reflects external visible light. A scanner using the infrared cropping optical module for image cropping is also disclosed.