Light Adjusting Apparatus Rotary Shaft Integration
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Solution Overview
Problem
Conventional small image pickup apparatuses face challenges in achieving high image quality due to the limitations of fixed optical elements, necessitating the integration of adjustable light components like focus lenses and variable diaphragms, while also requiring miniaturization techniques to maintain a compact form factor.
Innovation Solution
A light adjusting apparatus comprising a rotary shaft member with a light adjusting section that moves between insertion and retracted positions within the optical path, utilizing an electromagnetic drive source and holding members to restrict rotation, allowing for precise light adjustment by rotating the light adjusting section between these positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If variable optical elements (focus lenses, variable diaphragms) are adopted to improve image quality, then light adjustment capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the light adjusting section with the rotary shaft member into a single integrated unit. The light adjusting section is fixed to the rotary shaft member, merging the light control function with the rotation mechanism, thereby reducing the number of separate components while maintaining variable optical capabilities for improved image quality
Solution Approach 2:
The rotary shaft member serves multiple functions: it acts as both the rotation axis and the support structure for the light adjusting section, and its rotation enables both positioning and light adjustment operations. This multi-functionality reduces device complexity while providing the necessary variable optical elements for high image quality
2Adaptability or versatility
If additional mechanisms are added to move the rotary shaft member, then light adjustment capability is improved, but device complexity increases
Solution Approach 1:
The electromagnetic drive source is integrated with the rotary shaft member assembly, combining the driving function with the rotation mechanism. This merging eliminates the need for separate transmission mechanisms while providing precise light adjustment capability through direct electromagnetic actuation
Solution Approach 2:
The electromagnetic drive source directly actuates the rotary shaft member without requiring intermediate mechanical linkages or additional moving mechanisms. The system serves itself by using the drive source to directly produce the required rotation for light adjustment, simplifying the overall mechanism
3Ease of operation
If the light adjusting section can rotate freely at all positions, then operational flexibility is improved, but reliability decreases due to unintended movement when power is off
Solution Approach 1:
The holding member provides conditional constraint: it restricts rotation only when the light adjusting section is in the first region (when power is off or in idle state), but allows rotation when in the second region (when power is applied and operation is required). This dynamic behavior maintains both reliability through position stability and operational flexibility when needed
Solution Approach 2:
The holding member responds to the position of the light adjusting section, providing automatic feedback control. When the light adjusting section returns to the first region, the holding member automatically engages to prevent unintended rotation, ensuring position stability without requiring continuous power or active control
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
Enables efficient light adjustment, such as diaphragm control, while maintaining a compact size without the need for additional mechanisms to move the rotary shaft member, simplifying the configuration and preventing unintended movement when power is off.
Implementation Method 1
an electromagnetic drive source including a coil core member and a coil, and configured to rotate the rotary shaft member and move the light adjusting section in the axial direction
Implementation Method 2
a holding member configured to restrict, when the space is divided into a first region having a position in the axial direction on the first substrate side and a second region having a position in the axial direction on the second substrate side, rotation from at least one of the insertion position and the retracted position of the light adjusting section when the light adjusting section is located in the first region
Data Source
AI summary
A light adjusting apparatus includes substrates arranged in parallel, each including an opening to pass light, a rotary shaft member which is rotatable around an axis perpendicular to the substrates and movable in an axial direction, a light adjusting section fixed integrally to the rotary shaft member in a space between the substrates and configured to move to an insertion position or a retracted position along with the rotation of the rotary shaft member and adjust light that passes through the opening, and a holding member configured to restrict the rotation of the light adjusting section that moves to one substrate side in the space from the insertion/retracted position and allow the rotation of the light adjusting section that moves to the other substrate side in the space.