Lens Array Light-Shielding Film UV-Curable Ink Curing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional lens arrays face challenges in achieving high-quality light-shielding with UV-curable ink due to limitations in curing energy penetration, leading to insufficient light-shielding performance and increased manufacturing costs.
Innovation Solution
A lens array is formed with a light-shielding film using UV-curable ink containing a thermal acid generator, which is cured through a combination of ultraviolet radiation and controlled thermal decomposition, ensuring effective light-shielding properties and improved film curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light-shielding property of the light-shielding film is improved by using UV-curable ink, then stray light can be shielded, but the curing energy cannot reach the depth direction of the light-shielding film during the UV curing process
Solution Approach 1:
The patent changes the chemical composition parameters of the UV-curable ink by incorporating specific photoinitiators and resin systems that enable deeper UV penetration. It also adjusts curing parameters such as UV intensity, wavelength, and exposure time to ensure complete curing through the light-shielding film while maintaining its optical blocking properties.
Solution Approach 2:
The patent uses composite material formulation by combining UV-curable resin, photoinitiators, and light-shielding pigments in specific ratios. This composite structure allows the film to simultaneously achieve deep curing capability and effective light shielding, resolving the contradiction between curing completeness and light-shielding performance.
2Ease of manufacture
If conventional inkjet methods are used to form light-shielding film, then manufacturing process is simplified, but the resin material of the microlens array is limited due to heating or drying modules
Solution Approach 1:
The patent replaces thermal drying mechanisms with UV photopolymerization curing. This substitution eliminates the need for heating or drying modules in the inkjet printing system, thereby simplifying the manufacturing process while simultaneously expanding resin material options to include UV-curable materials that would be incompatible with thermal processing.
Solution Approach 2:
The patent changes the curing mechanism from thermal to photonic by using UV-curable ink formulations. This parameter change in the curing process allows compatibility with a broader range of resin materials that can be cured by UV light rather than heat, thus expanding material versatility while maintaining process simplicity.
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 achieves enhanced light-shielding performance with improved curing of the UV-curable ink, effectively shielding stray light and reducing manufacturing costs by optimizing the curing process.
Implementation Method 1
a light-shielding film disposed on the transparent substrate around the plurality of lenses; wherein the light-shielding film comprises a cured uv-curable ink
Implementation Method 2
containing a thermal acid generator, which is cured through a combination of ultraviolet radiation and controlled thermal decomposition
Data Source
AI summary
A lens array comprises a plurality of lenses disposed on a transparent substrate, and a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the light-shielding film comprises a cured uv-curable ink containing a thermal acid generator. A method of manufacturing a lens array includes forming a plurality of lenses on a transparent substrate, depositing a uv-curable ink on the transparent substrate around the plurality of lenses, and curing the uv-curable ink to form a light-shielding film disposed on the transparent substrate around the plurality of lenses, wherein the inside of the light-shielding film is heated after the uv-curable ink is cured.