Defogging Lens Barrel Structure with Insulating Support Ring
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Solution Overview
Problem
Conventional defogging lenses suffer from inefficient heating due to direct contact between the heating lens and the lens barrel, leading to thermal energy dispersion and incomplete fog removal, especially in extremely cold environments.
Innovation Solution
A defogging lens barrel structure that reduces contact between the lens and the heating plate with the inner wall of the lens barrel by using a receiving groove with a slot between the lens's peripheral portion and the inner wall, and a heat-insulating and positioning module with low thermal conductivity to minimize thermal energy dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the heating lens directly abuts against the inner wall of the lens barrel, then the structure is simple, but the thermal energy is dispersed to the lens barrel causing uneven heating and fogging
Solution Approach 1:
A heat-insulating support ring is introduced as an intermediary component between the heating lens and the lens barrel inner wall. This support ring has thermal insulation properties that prevent direct heat conduction to the barrel, allowing the heating lens to be securely positioned while maintaining heating effectiveness and preventing fogging.
Solution Approach 2:
The contact interface between the heating lens and lens barrel is segmented by introducing the heat-insulating support ring. This segmentation separates the heating function from the structural support function, allowing independent optimization of both aspects - the heating lens focuses thermal energy while the support ring provides mechanical support with thermal isolation.
2Ease of manufacture
If the heating lens directly contacts the lens barrel, then the manufacturing process is simple, but the thermal energy dispersion causes incomplete fog removal
Solution Approach 1:
The heat-insulating support ring serves as a mediator that maintains the heating lens at an optimal distance from the barrel wall. This intermediary component ensures that thermal energy is directed toward fog removal rather than being lost to the barrel, significantly improving defogging efficiency while adding minimal manufacturing complexity.
3Ease of operation
If the heating lens is in direct contact with the lens barrel inner wall, then the positioning is straightforward, but the thermal conduction reduces heating uniformity
Solution Approach 1:
The heat-insulating support ring acts as a positioning intermediary that simplifies installation while ensuring thermal isolation. The ring's geometry provides automatic positioning features that guide the heating lens into the correct location, maintaining ease of operation while preventing thermal conduction that would compromise heating uniformity.
Solution Approach 2:
The support ring provides localized thermal insulation at the critical interface between the heating lens and barrel. This local application of heat insulation maintains heating uniformity across the lens surface by preventing heat loss at the contact point, while the overall positioning system remains simple and easy to implement.
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 design ensures uniform heating of the lens by concentrating thermal energy and reducing dispersion, effectively preventing fog formation and improving image clarity in various environmental conditions.
Implementation Method 1
a heat-insulating and positioning module installed in the receiving groove of the lens barrel, wherein heat-insulating and positioning module surrounds the peripheral portion of the first lens and is fixed within the at least one slot; a thermal conductivity of the heat-insulating and positioning module is less than 0.1 W/m·K
Implementation Method 2
the heating member includes a heating lens and a power line, wherein the heating lens is disposed on the at least one lens, and the power line passes through the lens barrel to be connected to the heating lens, so that the heating lens could generate a thermal energy
Data Source
AI summary
A defogging lens barrel structure includes a lens barrel, a heating module, and a lens assembly. The lens barrel includes a receiving groove with an inner wall. The heating module and the lens assembly are respectively disposed within the lens barrel. The lens assembly includes a first lens mounted in the receiving groove, supported by the heating module, and having a peripheral portion. A slot is provided between the peripheral portion and the inner wall. The receiving groove has a positioning part. The heating module has a positioned part correspondingly matching with the positioning part. A gap is provided between the heating module and the inner wall. With such design, the contact of the heating module and the first lens with the inner wall of the lens barrel could be reduced, thereby reducing the effect of the heat of the heating module and the first lens being dispersed.