Lens Limiting Assembly With Locking Ring for Stable Flange Distance
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Solution Overview
Problem
Existing camera technologies face issues with maintaining a precise flange focal distance due to rotational mounting of lenses, leading to gaps that can cause poor contact and instability, especially when used on vibrating platforms, and existing solutions like strip springs are not stable enough to ensure a close fit.
Innovation Solution
A camera body with a lens limiting assembly that includes an elastic element, a lens assembly ring, and a locking ring, where the locking ring rotates to press the elastic element, snapping the lens into place and locking it to prevent rotation and falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lens is rotatably mounted to the camera body, then the lens can be easily installed and removed, but a gap of about 0.05 mm exists between the lens and the body causing poor contact and instability
Solution Approach 1:
The lens mounting structure transitions from a static rotational connection to a dynamic locking mechanism. The locking ring can rotate to engage with the lens assembly ring, transforming the continuously rotatable connection into a fixed locked state, thereby eliminating the gap while maintaining ease of installation and removal
Solution Approach 2:
The elastic element acts as an intermediary between the locking ring and the lens assembly ring. When the locking ring rotates, it presses the elastic element which in turn presses the lens assembly ring against the camera body, ensuring close contact and stability through this intermediate elastic component
2Reliability
If a strip spring is used to eliminate the gap, then the contact between lens and body is improved, but the strip spring piece is not stable enough to guarantee a close fit
Solution Approach 1:
The elastic element is segmented into multiple pressing points around the lens assembly ring. Instead of a single strip spring, multiple elastic elements are distributed circumferentially, providing stable and uniform pressing force at multiple locations, thereby guaranteeing close fit and improving overall stability
Solution Approach 2:
The elastic element design changes the pressing mechanism by using a ring structure with distributed elastic arms rather than a linear strip spring. This structural parameter change provides better stability and more uniform force distribution, ensuring reliable close contact between the lens and camera body
3Ease of operation
If the lens is rotatably mounted, then the lens can be easily detached, but the flange focal distance may change due to the gap
Solution Approach 1:
The locking mechanism performs preliminary action by pre-compressing the elastic element and lens assembly ring together before final locking. This preliminary compression ensures that the lens is already in close contact with the camera body at the correct flange focal distance before the locking ring fully engages, preventing distance variation
Solution Approach 2:
The simple rotational mounting is replaced with a mechanical locking system that actively maintains precise positioning. The locking ring and elastic element mechanism substitutes for passive rotational mounting, providing active force to maintain the lens at the precise flange focal distance while still allowing easy attachment and detachment
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 ensures a stable and precise flange focal distance, preventing lens rotation and falling, even on vibrating platforms, by securely locking the lens to the camera body using the elastic and locking mechanisms.
Implementation Method 1
The lens limiting assembly comprises an elastic element arranged on the contact base mounting position, a lens assembly ring arranged on the elastic element, and a locking ring configured to abut against and press the elastic element when the locking ring rotates in one direction
Data Source
AI summary
A lens limiting assembly includes a lens assembly ring and a locking ring arranged outside the lens assembly ring. The lens assembly ring includes an accommodating groove. The locking ring includes a body and a hook protruding inwardly from the body and accommodated in the accommodating groove.