Thermal-Isolative Optical Lens With Near-Infrared Filtering
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Solution Overview
Problem
Conventional lens devices fail to effectively absorb both ultraviolet and high-energy violet rays, leading to reduced transmittance rates across the whole visible spectrum.
Innovation Solution
A near-infrared-filtering thermal-isolative optical lens device with a lens body incorporating an optical filter that includes a violet & UV absorbent region, a red & NIR absorbent region, and a whole-visible-spectrum transmittance region, designed to absorb specific wavelengths and enhance transmittance across the visible spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional lens devices use single-function absorbent materials, then they can absorb specific wavelengths (infrared or ultraviolet), but they cannot simultaneously absorb both ultraviolet and high-energy violet rays while maintaining whole-visible-spectrum transmittance
Solution Approach 1:
The optical filter is segmented into distinct functional regions: a violet & UV absorbent region (first wavelength range), a whole-visible-spectrum transmittance region (second wavelength range), and a red & NIR absorbent region (third wavelength range). Each region contains absorbent materials optimized for its specific wavelength range, allowing selective absorption of harmful rays while maintaining transmittance in the visible spectrum.
Solution Approach 2:
Different portions of the optical filter have different optical properties tailored to their function. The violet & UV absorbent region has high absorption in the 380-450 nm range, while the whole-visible-spectrum transmittance region maintains high transmittance (≥40%) across 450-750 nm. This local differentiation of optical properties enables simultaneous protection against UV/violet rays and preservation of visible light transmission.
2Object-affected harmful factors
If lens devices use broad-spectrum absorbent materials to block UV and violet rays, then harmful ray absorption improves, but transmittance across the whole visible spectrum is reduced
Solution Approach 1:
The optical filter divides the spectrum into separate absorption and transmittance zones. The violet & UV absorbent region specifically targets 380-450 nm wavelengths, while the whole-visible-spectrum transmittance region ensures ≥40% transmittance from 450-750 nm. This segmentation prevents broad-spectrum absorption that would compromise visible light transmission.
Solution Approach 2:
The patent specifies precise wavelength range parameters and transmittance thresholds to optimize the balance between absorption and transmission. By defining the violet & UV absorbent region to cover 380-450 nm and the transmittance region to cover 450-750 nm with ≥40% transmittance, the design parameters are tuned to achieve selective filtering without compromising overall visibility.
3Object-affected harmful factors
If lens devices incorporate multiple absorbent materials for different wavelength ranges, then spectral coverage improves, but device complexity increases
Solution Approach 1:
The optical filter combines multiple absorbent materials and functional regions into a single integrated component. The violet & UV absorbent region, whole-visible-spectrum transmittance region, and red & NIR absorbent region are merged into one optical filter assembly, providing multi-wavelength protection without requiring separate lens elements or complex multi-layer structures.
Solution Approach 2:
The optical filter performs multiple functions simultaneously: absorbing UV rays (380-450 nm), transmitting visible light (450-750 nm with ≥40% transmittance), and absorbing near-infrared rays (750-2500 nm). This multi-functionality is achieved within a single optical filter component, reducing the need for multiple separate elements and simplifying the overall device 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 device successfully absorbs high-energy violet light and UV light, enhancing transmittance across the visible spectrum while reducing IR-heat transformed energy, thereby improving thermal isolation and visibility.
Implementation Method 1
the violet & UV absorbent region is provided to absorb a violet light and a UV light of beams
Implementation Method 2
the red & NIR absorbent region is provided to absorb a red light and a NIR light of beams
Implementation Method 3
enhancing the beams with the whole-visible-spectrum transmittance region to provide an enhanced whole visible spectrum
Data Source
AI summary
An optical lens device includes a lens body, an optical filter and an optical absorbance portion. The optical absorbance portion has a violet & UV absorbent region and a red & NIR absorbent region between which forms a whole-visible-spectrum transmittance region. The whole-visible-spectrum transmittance region is located between a first transmittance wavelength at 405 nm and a second transmittance wavelength at 710 nm. The violet & UV absorbent region is provided to absorb a violet light and a UV light of beams while the red & NIR absorbent region is provided to absorb a red light and a NIR light of beams.