Imaging Device Substrate Adjustment with Elastic Biasing
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Solution Overview
Problem
Conventional imaging devices struggle with high precision adjustment of the optical axis, which is crucial for applications like automobiles, where misalignment is a significant concern.
Innovation Solution
The imaging device employs a substrate held by a holder with elastic bodies that bias the substrate in multiple directions perpendicular to the optical axis, allowing for precise adjustment through a combination of leaf springs and position adjusting screws, while also preventing electromagnetic noise and facilitating easy assembly and reassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional fitting structures are used to secure the imaging element position, then assembly is simple, but optical axis adjustment precision is insufficient
Solution Approach 1:
The holder is divided into a main body and a separate adjustment portion that can be independently adjusted. This segmentation allows the optical axis adjustment function to be separated from the basic holding function, enabling precise adjustment without complicating the overall structure. The adjustment portion includes adjustment holes and threaded holes that allow independent positioning of the imaging element.
Solution Approach 2:
The holder structure enables self-adjustment of the optical axis through the adjustment portion, which can be positioned and secured using simple threaded fasteners. This self-service mechanism allows precise optical axis alignment without requiring complex external adjustment mechanisms or specialized tools during assembly.
2Ease of operation
If the substrate position is fixed rigidly, then stability is high, but adjustment capability is lost
Solution Approach 1:
The holder transitions from a completely rigid structure to a semi-dynamic structure where the adjustment portion can be moved and repositioned. The adjustment holes and threaded fasteners enable the imaging element to be positioned at different locations while maintaining stability once adjusted. This dynamic capability allows both adjustment during assembly and stability during operation.
Solution Approach 2:
The adjustment holes are pre-positioned in the holder body at specific locations that correspond to desired imaging element positions. This preliminary arrangement of adjustment holes allows the imaging element to be quickly and accurately positioned without requiring complex real-time adjustment mechanisms, combining ease of operation with position stability.
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 enables high precision and stability in optical axis adjustment, reduces electromagnetic noise interference, and maintains image quality, making it suitable for high-precision applications like automotive imaging systems.
Implementation Method 1
a first elastic body for biasing the substrate in a first direction that is perpendicular to the optical axis
Implementation Method 2
a second elastic body for biasing the substrate in the optical axial forward direction
Data Source
AI summary
An imaging device having a substrate having an imaging unit mounted thereupon; a lens barrel holding a lens; a holder holding the lens barrel and being connected to the substrate; and a first elastic body impelling the substrate in a first direction perpendicular to the optical axis.