Zigzag Light Emitting Element Array Chip for Rod Lens Focus
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Solution Overview
Problem
Conventional light emitting element arrays in electro-photographic image forming apparatuses face challenges in optimizing the arrangement of light emitting elements and signal lines, which affects the focus performance and optical output, leading to suboptimal image formation.
Innovation Solution
A light emitting element array chip with two rows of light emitting elements arranged in a zigzag pattern, where the light emission signal lines are strategically placed between the elements to reduce internal resistance and improve focus performance by allowing closer proximity to the rod lens array, enhancing optical output and image formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light emitting elements are arranged in a conventional linear pattern, then the structure is simple, but the focus performance and optical output are suboptimal
Solution Approach 1:
The light emitting elements are arranged in a zigzag pattern across two rows instead of a single linear row, transitioning from one-dimensional to two-dimensional arrangement. This dimensional change allows the light emitting elements to be positioned closer to the rod lens array while maintaining proper spacing, thereby improving focus performance and optical output without excessive structural complexity.
Solution Approach 2:
The zigzag arrangement creates an asymmetric pattern where light emitting elements alternate between two rows at different positions. This asymmetric configuration optimizes the spatial relationship between light emitting elements and the rod lens array, enhancing focus performance while managing the overall device complexity through systematic asymmetry.
2Reliability
If signal lines are placed closer to light emitting elements to reduce internal resistance, then electrical conductivity improves, but the arrangement becomes more complex
Solution Approach 1:
The signal lines are integrated into the zigzag arrangement structure, sharing the same spatial framework as the light emitting elements. By merging the signal line routing with the existing zigzag pattern, the design achieves reduced internal resistance through closer proximity while avoiding additional structural complexity that would result from separate signaling systems.
3Illumination intensity
If light emitting element rows are positioned closer together, then optical output improves, but manufacturing precision requirements increase
Solution Approach 1:
The light emitting element array is segmented into two distinct rows with a zigzag pattern, allowing each row to be independently positioned and manufactured. This segmentation enables closer spacing between rows to improve optical output while maintaining manageable positioning accuracy requirements through the structured alternation pattern, as each segment can be precisely controlled within its own row.
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 zigzag arrangement of light emitting elements and optimized signal line placement enhance the focus performance of the rod lens array, improving the optical output and reducing the distance between light emitting element rows, resulting in better image formation and resolution.
Implementation Method 1
a first light emitting element row including light emitting elements that are arranged in a row in a main scanning direction, a second light emitting element row including light emitting elements that are arranged in a row in the main scanning direction
Data Source
AI summary
A light emitting element array chip includes first and second light emitting element rows including light emitting elements that are arranged in a main scanning direction in a zigzag, a first light emission signal line transmitting a light emission signal for allowing the light emitting elements forming the first light emitting element row to emit light, and a second light emission signal line transmitting a light emission signal for allowing the light emitting elements forming the second light emitting element row to emit light, wherein the first light emission signal line or the second light emission signal line is arranged in the main scanning direction between the first light emitting element row and the second light emitting element row and is provided in regions between the light emitting elements forming the first light emitting element row and between the light emitting elements forming the second light emitting element row.