Telescope Lens Cap with Concealed Rotation Axis
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Solution Overview
Problem
In telescopes, the conspicuous rotation axes on the outer surface of lens barrels make the aesthetic appearance unsightly when lens caps are removed, disrupting the smooth curvature from the objective lens to the eyepiece.
Innovation Solution
A lens cap system with a connecting member that includes a hole on the lens barrel and an extending portion with a connecting member, where the hole has a small and large diameter portion, and the connecting member has leg portions that fit into the small diameter portion and a nail portion that meshes with the large diameter portion, along with an elastic holder to secure the leg portions radially, allowing for secure attachment and easy removal without exposing the rotation axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rotation axes are disposed on the outer surface of the lens barrel for connecting lens caps, then the lens cap can be securely attached and removed, but the aesthetic external appearance is spoiled when lens caps are removed
Solution Approach 1:
The invention extracts the rotation axis from the outer surface of the lens barrel and relocates it to the inner side, where it is no longer visible. The connecting member now engages with a hole formed in the lens barrel surface, hiding the rotational mechanism while maintaining the attachment functionality.
Solution Approach 2:
The invention introduces a connecting member as an intermediary component that mediates between the lens cap and the lens barrel. This connecting member engages with the hole in the lens barrel and provides the rotational connection functionality without exposing the rotation axis on the outer surface.
2Shape
If a hole is formed on the lens barrel surface for the connecting member, then the rotation axis can be concealed, but the structural integrity of the lens barrel may be compromised
Solution Approach 1:
The invention applies local quality by forming a hole with specific structural features (small diameter portion and large diameter portion) at the connection location, while maintaining the smooth curved surface quality of the rest of the lens barrel. The hole structure is optimized locally to balance aesthetic requirements with structural needs.
3Reliability
If the connecting member is made with leg portions and nail portions for engagement, then secure attachment is achieved, but the device complexity increases
Solution Approach 1:
The invention applies dynamics by making the holder elastic, allowing the leg portions to flex during insertion and engagement. The elastic holder can deform to accommodate the leg portions and then return to its original shape to secure them, providing a dynamic attachment mechanism that is both secure and relatively simple.
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 design maintains the aesthetic appeal of the telescope by concealing the rotation axes and ensuring the lens cap remains securely attached, preventing it from coming loose and spoiling the external appearance.
Implementation Method 1
an elastic holder capable of holding the plurality of leg portions in a radial direction such that the leg portions can be opened and closed
Data Source
AI summary
Providing a telescope capable of preventing aesthetic external appearance thereof from losing. The telescope has a hole 33 on an outer surface of a lens barrel 3. A lens cap 5 for protecting an objective lens of the telescope includes a lens cap body 51, an extending portion 59 extending from the lens cap body 51, and connecting member 52 capable of removably attaching to the hole 33.