Imaging Device Lens Barrel Securing Plate Optical Axis Adjustment
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Solution Overview
Problem
Existing imaging devices face challenges in accurately and easily adjusting the optical axis of the lens group during assembly, which affects the precision and efficiency of the manufacturing process.
Innovation Solution
The imaging device incorporates a securing plate and a pressing member that can be provisionally secured to the lens barrel holding member, allowing for movement across the optical axis, combined with an adhesive agent for secure attachment, and a leaf spring for biasing the lens barrel, enabling precise alignment and adjustment of the optical axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the securing plate is firmly secured to the lens barrel holding member during assembly, then the position stability is improved, but the ease of adjusting the optical axis deteriorates
Solution Approach 1:
The securing plate is designed to transition from a movable state during assembly (allowing optical axis adjustment) to a fixed state after adjustment (providing position stability). The pressing member applies pressure to hold the securing plate against the lens barrel holding member, enabling easy adjustment during assembly, while the adhesive agent provides firm fixation after adjustment is complete.
Solution Approach 2:
The pressing member is used to preliminarily secure the securing plate to the lens barrel holding member in an adjustable state before final adhesive bonding. This preliminary action allows for easy optical axis adjustment during assembly, and after adjustment is complete, the adhesive agent is applied to achieve firm permanent fixation.
2Ease of operation
If the securing plate is loosely attached to allow movement, then the ease of adjusting the optical axis is improved, but the manufacturing precision deteriorates
Solution Approach 1:
The securing plate transitions from a movable state during assembly (with pressing member pressure) to a fixed state after adjustment. During the adjustment phase, the pressing member maintains contact while allowing repositioning, and after precise alignment is achieved, the adhesive agent provides firm fixation to preserve the precisely adjusted position.
Solution Approach 2:
The adhesive agent acts as an intermediary that transitions from a non-bonding state during adjustment to a bonding state after adjustment. This allows the securing plate to be easily repositioned during assembly while ensuring precise final positioning once the adhesive sets.
3Device complexity
If the securing process is integrated with the bonding process, then the device complexity is reduced, but the productivity deteriorates due to inability to adjust optical axis independently
Solution Approach 1:
The assembly process is segmented into distinct phases: a preliminary securing phase using the pressing member that allows for optical axis adjustment, and a final bonding phase using the adhesive agent. This segmentation enables independent optimization of each step - easy adjustment during securing and firm fixation during bonding - thereby improving overall productivity without significantly increasing complexity.
Solution Approach 2:
The pressing member performs preliminary securing of the securing plate to the lens barrel holding member, allowing optical axis adjustment to be completed before final adhesive bonding. This preliminary action separates the adjustment operation from the bonding operation, enabling more efficient assembly workflow and improved productivity.
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 solution allows for easy and accurate adjustment of the optical axis, improving the manufacturability and reducing costs by decoupling the centering adjusting step from the bonding process, ensuring precise optical characteristics and enhanced assembly efficiency.
Implementation Method 1
a state wherein the securing plate has been secured provisionally to the lens barrel holding member... or a secured state wherein the securing plate is secured to the lens barrel holding member
Implementation Method 2
the pressing member: may be formed from a material that is elastically deformable... a plate-shaped flat plate portion that is disposed away from the securing plate
Implementation Method 3
the imaging device may further comprise a biasing member for biasing the lens barrel in the optical axial direction of the lens group
Data Source
AI summary
An imaging device having a lens group; a lens barrel holding the lens group; a base member holding the lens barrel; an imaging element; a fixed plate arranged facing at least part of the base member in a state in which the imaging element is fixed; and a pressing member for attaching, to the base member, the fixed plate in a state in which the fixed plate is temporarily fixed to the base member in a state in which fixed plate is movable in a direction intersecting the axial line of the lens group, relative to the base member.