Moth-Eye Resin-Laminated Optics for Compact Light Emission
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Solution Overview
Problem
Conventional optical apparatuses face issues of increased size due to separate components such as light diffuser panels and light source units, leading to interface reflections and deterioration in light emission quality.
Innovation Solution
Integration of a resin layer with a micro concave-convex structure, such as a moth-eye structure, onto optical base materials to form a resin laminated optical body, which includes a light source unit, reducing size and improving light emission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light diffuser panel and optical lens are kept separate, then each component can be optimized independently, but the optical apparatus size increases and interface reflection occurs
Solution Approach 1:
The patent combines the light diffuser panel and optical lens into a single integrated component where the light diffuser panel is positioned in direct contact with the optical lens surface. This eliminates the air gap between components, preventing interface reflection and ghosting while reducing the overall optical apparatus size.
Solution Approach 2:
The patent introduces a resin layer as an intermediary substance between the light diffuser panel and optical lens. This resin layer has refractive index properties that match both materials, eliminating optical impedance mismatch and preventing interface reflection while maintaining intimate contact between components.
2Reliability
If a light source unit and other optical elements are kept separate, then assembly and maintenance are easier, but the optical apparatus size increases and interface reflection occurs
Solution Approach 1:
The patent integrates the light source unit with other optical elements by positioning the light source unit in direct contact with the optical element surface, eliminating separating air gaps. This merging approach prevents interface reflection and reduces the overall apparatus volume while maintaining optical performance.
Solution Approach 2:
The patent uses a resin layer as an intermediary between the light source unit and optical elements. This resin layer eliminates refractive index mismatch at interfaces, preventing ghosting and improving light transmittance while allowing compact integration of components.
3Reliability
If conventional flat surfaces are used at component interfaces, then manufacturing is simpler, but interface reflection and ghosting occur
Solution Approach 1:
The patent applies a moth-eye micro concave-convex structure to specific interface regions where optical contact occurs. This localized surface treatment creates gradient refractive index properties at the interface, eliminating reflection and ghosting while maintaining simple flat surfaces in non-critical regions for ease of manufacture.
Solution Approach 2:
The patent replaces conventional mechanical surface finishing with a biomimetic moth-eye micro structure. This structural approach uses nanoscale geometry rather than traditional coating or polishing methods to achieve anti-reflection properties, simplifying the manufacturing process while improving optical performance.
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 integration of the resin layer with a micro concave-convex structure reduces the optical apparatus size and enhances light transmittance while preventing ghosting and interface reflections.
Implementation Method 1
A micro concave-convex structure is formed in a surface of the resin layer. Herein, the micro concave-convex structure may include at least one of a moth-eye structure
Implementation Method 2
the micro concave-convex structure may include a diffraction grating structure
Implementation Method 3
interface reflection occurs at the surface of the optical lens or the surface of the light diffuser panel, and deterioration in light emission quality, such as deterioration in light transmittance or occurrence of ghost due to stray light in an enclosure, occurs in some cases
Data Source
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AI summary
Provided are a resin laminated optical body, a light source unit, an optical unit, a light irradiation device, an image display device, and a method for manufacturing a resin laminated optical body that are novel and improved, by which an optical apparatus can be reduced in size, and the light emission quality can be improved. To achieve the above object, according to an aspect of the present invention, a resin laminated optical body is provided including an optical base material having a curved surface, and a resin layer provided on the curved surface of the optical base material, in which a light diffusing structure is formed in a surface of the resin layer.