Lens Accessory Biasing Mechanism for Tool-Free Attachment
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Solution Overview
Problem
Existing lens drive adapters require tools for attachment and detachment, are not suitable for small lens barrels, and can compromise optical performance due to strong fastening forces.
Innovation Solution
A lens accessory with a biasing mechanism using a first and second holder, an operation member, and biasing members that allow easy attachment and detachment by rotational operation, maintaining optical performance and accommodating various barrel diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to attach the power zoom apparatus to the lens barrel, then the attachment is secure, but a tool such as a screwdriver is required and attachment/detachment cannot be easily performed
Solution Approach 1:
The attachment mechanism is divided into separate functional components: a holder that engages with the lens barrel and an operation member that actuates the engagement. This segmentation allows the operation member to be independently designed for easy manual operation while the holder ensures secure attachment through its engagement structure with the lens barrel.
Solution Approach 2:
The operation member is designed to manually actuate the holder's engagement with the lens barrel through a self-contained mechanical mechanism. The user can directly operate the attachment and detachment functions without requiring external tools, as the operation member incorporates the necessary actuating structures within its own configuration.
2Strength
If a screw is used to fasten the lens barrel holding apparatus, then the fastening force is strong, but the optical performance of the lens barrel may be deteriorated
Solution Approach 1:
The harmful effect of strong fastening force is extracted and isolated to a specific location on the lens barrel, concentrating the mechanical engagement at a single point or small area rather than distributing it along the entire barrel circumference. This extraction allows sufficient fastening force while minimizing impact on the overall optical performance of the lens barrel.
Solution Approach 2:
The holder is designed with a localized engagement structure that concentrates the fastening function at a specific position on the lens barrel. This local quality approach ensures strong fastening force at the engagement point while leaving the rest of the lens barrel unaffected, thereby preserving optical performance.
3Adaptability or versatility
If the lens barrel holding apparatus is designed for large outside diameter, then it can accommodate large barrels, but it cannot be attached to lens barrels with small outside diameters
Solution Approach 1:
The holder's engagement structure is designed with dynamic adaptability, allowing it to adjust to different lens barrel outside diameters. The operation member can actuate the holder to engage with barrels of varying sizes through a mechanical system that naturally adapts to the specific dimensions of each barrel, eliminating the need for multiple fixed-size holders.
Solution Approach 2:
The holder is designed as a universal component that can attach to lens barrels with various outside diameters through a single multi-functional structure. The operation member's actuating mechanism enables the same holder to accommodate both small and large barrels, providing multi-functionality without requiring separate specialized holders for different barrel sizes.
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 easy attachment and detachment of the lens accessory to various lens barrels without tools, suppressing optical performance deterioration and ensuring compatibility with different barrel sizes.
Implementation Method 1
a biasing mechanism configured to apply a biasing force to the at least one holder so as to hold the lens barrel
Data Source
AI summary
A lens accessory (1) is detachably attached to a lens barrel (2), and includes a first holder (104) and a second holder (105) for holding the lens barrel, an operation member (102) that moves at least one holder of the first holder and the second holder between a first position and a second position, and a biasing mechanism (110) that applies a biasing force to the at least one holder so as to hold the lens barrel, the biasing mechanism includes a first biasing member and a moving member that moves the at least one holder from the first position to the second position according to an operation of the operation member via the first biasing member, and when the at least one holder contacts the lens barrel, the first biasing member is displaced by the moving member.