Light Adjusting Apparatus Flange Joint Strength
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Solution Overview
Problem
Conventional small image pickup devices face challenges in miniaturizing light adjusting apparatuses while maintaining high image quality, as the junction area of the joint portion between the diaphragm blade and the rotating shaft member decreases with the thickness of the diaphragm blade, compromising the strength and stability of the light adjusting mechanism.
Innovation Solution
A light adjusting apparatus with a rotating shaft member and an incident light adjusting section featuring a reinforcing portion that increases the junction area between the shaft and the adjusting section, allowing for reduced thickness without compromising bonding strength or increasing weight, achieved through a ring-shaped protruding portion that enhances the joint area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the thickness of the incident light adjusting section is reduced to achieve miniaturization, then the overall size of the light adjusting apparatus is reduced, but the junction area of the joint portion between the rotating shaft member and the incident light adjusting section decreases, compromising bonding strength
Solution Approach 1:
The invention transitions from a single-dimension joint (shaft inserted through orifice) to a multi-dimension joint system by adding a flange portion that extends the joint area laterally. This dimensional expansion allows the joint area to be increased without increasing the axial thickness of the incident light adjusting section, thereby maintaining bonding strength while achieving miniaturization in the thickness direction.
Solution Approach 2:
The flange portion is designed to extend beyond the optical axis before assembly, preliminarily establishing a larger joint area. This preliminary structural arrangement ensures that when the rotating shaft member is assembled, the bonding interface is already optimized for maximum strength, preventing the need for thicker sections to compensate for weak joints.
2Length of moving object
If the thickness of the incident light adjusting section is reduced to achieve a slimmer apparatus, then the overall profile is improved, but the structural stability and reliability of the light adjusting mechanism deteriorates
Solution Approach 1:
By extending the flange portion in the radial direction (another dimension), the invention compensates for the reduced axial thickness. This dimensional redistribution maintains the moment of inertia and structural rigidity required for reliable light adjusting, even when the overall thickness is reduced for a slimmer profile.
Solution Approach 2:
The flange portion concentrates structural reinforcement at the critical joint region between the rotating shaft member and the incident light adjusting section. This localized quality enhancement ensures that the most stress-prone area maintains high reliability, while other parts of the structure can be minimized for overall slimness.
3Weight of moving object
If the thickness of the incident light adjusting section is reduced to achieve weight reduction, then the apparatus becomes lighter, but the junction area decreases leading to potential failure points
Solution Approach 1:
The flange portion redistributes the structural mass from the axial direction to the radial direction. This allows the incident light adjusting section to be thinner and lighter in the thickness direction, while the joint strength is maintained through the extended flange area that provides a larger bonding interface with the rotating shaft member.
Solution Approach 2:
The invention changes the geometric parameters of the joint structure by adding the flange portion, which increases the joint area parameter without increasing the overall weight significantly. This parameter optimization allows weight reduction in the main body while maintaining or even improving joint strength through the redistributed mass in the flange region.
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 solution effectively secures the strength of the bonding with the rotating shaft member even when the thickness of the incident light adjusting section is reduced, allowing for a slimmer and lighter apparatus while maintaining high image quality and adjustable light control.
Implementation Method 1
a coil body (5) is interposed between an upper cover (1) and a lower cover (7) and a rotor (4) polarized into two poles by a magnetic field generated by the coil body (5) is rotated
Data Source
AI summary
A light adjusting apparatus including first and second substrates that include openings and are disposed parallel to each other at a predetermined distance, a rotating shaft member rotatably attached to the first and second substrates, a drive section that rotates the rotating shaft member, an incident light adjusting section that has a light adjusting function and is joined to the rotating shaft member so as to rotate integrally therewith, and a ring-shaped protruding portion for increasing a junction area of a joint portion between the rotating shaft member and the incident light adjusting section, in which the incident light adjusting section is rotated by the drive section via the rotating shaft member to be displaced to an inserted position located in the optical path of the incident light that passes through the openings or a retracted position to thereby adjust the incident light.