Lens Protective Film With Buffer Layer And Handle
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Solution Overview
Problem
Existing lens protective films have poor optical properties and are prone to breaking during removal, leading to debris entry and compromised imaging quality.
Innovation Solution
A lens protective film with a laminated structure comprising a base layer, buffer layer, insulating layer, protective layer, and solder mask layer, featuring overlapping openings and handles for secure attachment and easy detachment, minimizing debris entry and maintaining high light transmittance for effective optical testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lens protective film is provided with a handle for pulling, then the ease of operation is improved, but the lens protective film may break during pulling, causing debris to enter the lens and affecting imaging quality
Solution Approach 1:
The protective film is divided into multiple layers including a base layer, buffer layer, insulating layer, protective layer, and solder mask layer. Each layer serves a specific function, with the buffer layer specifically designed to absorb stress and prevent breakage during removal operations.
Solution Approach 2:
A buffer layer is introduced between the base layer and the protective layer to provide beforehand cushioning. This buffer layer absorbs mechanical stress and prevents the film from breaking during pulling or removal operations, thereby preventing debris entry while maintaining ease of operation.
2Object-affected harmful factors
If a lens protective film is used to prevent damage and dust ingress, then the protection against harmful factors is improved, but the optical properties deteriorate, making optical testing ineffective
Solution Approach 1:
Different layers of the protective film are designed with different properties tailored to specific functions. The protective layer provides mechanical protection and dust ingress prevention, while the buffer layer provides stress absorption. Each layer's local properties are optimized to fulfill its specific function without compromising overall optical performance.
Solution Approach 2:
The protective film uses a composite structure combining multiple materials with different properties. The base layer, buffer layer, insulating layer, protective layer, and solder mask layer work together as a composite system that provides both protection and acceptable optical properties for testing.
3Device complexity
If a simple protective film structure is used, then the device complexity is reduced, but the film is prone to breaking during removal, compromising reliability
Solution Approach 1:
The protective film is segmented into multiple functional layers rather than using a single simple layer. This segmentation allows each layer to be optimized for its specific function, with the buffer layer providing stress absorption and the protective layer providing mechanical protection, thereby improving reliability without excessive complexity.
Solution Approach 2:
The buffer layer is introduced as a stress-absorbing element before the protective layer. This beforehand cushioning prevents stress concentration that would cause breakage during removal, improving film integrity while maintaining a relatively simple overall structure.
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 solution provides robust protection against damage and dust ingress during transportation and soldering, while allowing effective optical testing with minimal impact on image quality by using a high light transmittance protective layer and secure handle mechanisms to prevent film breakage.
Implementation Method 1
a protective layer (36) formed on one surface of the base layer (31) away from the lens (20)... The protective layer (36) is made from an elastic material having a high modulus of elasticity and a good deformability
Data Source
AI summary
A lens protective film includes a base layer, a buffer layer, and a protective layer. The buffer layer and the protective layer are laminated on the base layer. The base layer includes a main body and a first handle extending from the main body. An opening is defined in each of the main body and the buffer layer. The openings of the main body and the buffer layer overlap to form the receiving structure. The receiving structure is used to receive a raised part of a lens. The lens protective film can prevent the buffer layer and the protective layer from being broken and generating debris.