Lens Antireflection Layer Wavelength Selective Transmittance
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Solution Overview
Problem
Existing lens technologies face a trade-off between optical performance and transmittance in wide wavelength bands, making it difficult to form antireflection layers that increase transmittance across a broad spectrum while maintaining sufficient optical performance.
Innovation Solution
The lens design incorporates an optical layer and an antireflection layer with specific transmittance characteristics, featuring a maximal and minimal value difference of 35% or more, allowing individual optimization of transmittance in distinct wavelength bands to enhance antireflection and optical layer performance separately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If an antireflection layer is designed to increase transmittance across a broad wavelength spectrum, then transmittance is improved, but optical performance deteriorates
Solution Approach 1:
The wavelength spectrum is segmented into multiple bands (first wavelength band, second wavelength band, third wavelength band), and the antireflection layer is designed with different transmittance characteristics for each band. This allows optimization of transmittance in specific bands while maintaining optical performance in others, resolving the contradiction between broad transmittance and optical performance.
Solution Approach 2:
The antireflection layer exhibits locally optimized transmittance properties for different wavelength bands rather than uniform transmittance across the entire spectrum. By having maximal transmittance in the first wavelength band and minimal transmittance in the third wavelength band, the layer provides targeted transmittance enhancement where needed while preserving optical performance in other regions.
2Adaptability or versatility
If the transmittance difference between maximal and minimal values is increased to 35% or more for band-specific optimization, then wavelength band selectivity is improved, but manufacturing complexity increases
Solution Approach 1:
The antireflection layer is designed with specific transmittance parameter variations across different wavelength bands, with a controlled difference of 35% or more between maximal and minimal transmittance values. This parameter optimization achieves wavelength band selectivity while maintaining manufacturability through precise control of transmittance characteristics rather than complex structural modifications.
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 enables stable short-time curing of the resin material and high-sensitivity imaging in a wide wavelength band, facilitating the formation of lenses with improved transmittance and diffraction efficiency across the desired spectrum.
Implementation Method 1
an antireflection layer, in which the antireflection layer is provided at an outermost surface, in an optical axis direction, of the lens
Implementation Method 2
a transmittance of the antireflection layer has a maximal value and a minimal value in order from a short wavelength side of a wavelength of light
Implementation Method 3
an optical layer containing a resin
Data Source
AI summary
A lens includes: an optical layer containing a resin; a member; and an antireflection layer, the antireflection layer is provided at an outermost surface, in an optical axis direction, of the lens, and a transmittance of the antireflection layer has a maximal value and a minimal value in order from a short wavelength side of a wavelength of light.