Segmented Optical Lens for Blue-Light Protection and Visibility
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Solution Overview
Problem
Existing optical elements fail to provide adequate protection against short-wavelength light, such as that emitted by screens, LEDs, and streetlights, while maintaining sufficient transmission for visible light, leading to potential visual system damage and user discomfort.
Innovation Solution
An optical lens with a base body divided into two sections, each with distinct absorptive and transmissive properties, specifically designed to target and absorb short-wavelength light between 400 and 445 nm, while allowing high transmission above 445 nm, utilizing dichroic filter devices to achieve this.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If optical elements are designed to provide adequate protection against short-wavelength light, then protection against short-wavelength light is improved, but transmission beyond the short-wavelength light range becomes too low
Solution Approach 1:
The base of the optical element is divided into at least two sections with different optical properties. The first base surface section is optimized for absorbing short-wavelength light (400-445 nm), while the second base surface section maintains higher transmission in the visible light range (445-600 nm). This segmentation allows simultaneous achievement of short-wavelength protection and visible light transmission.
Solution Approach 2:
Different regions of the optical element base are assigned different optical characteristics. The first base surface section exhibits specific absorptive properties for short-wavelength light, while the second base surface section exhibits different absorptive properties that allow better transmission in the visible range. This local differentiation resolves the contradiction between protection and transmission.
2Reliability
If optical elements absorb short-wavelength light, then protection against visual system damage is improved, but user comfort and visibility are worsened
Solution Approach 1:
By segmenting the base into multiple sections with different optical properties, the patent achieves selective absorption: strong absorption of harmful short-wavelength light while maintaining adequate transmission of beneficial visible light, thus preserving both protection and user comfort.
Solution Approach 2:
The optical properties (absorption and transmission parameters) are optimized at different wavelength ranges for different base sections. The first base surface section has high absorption parameters for 400-445 nm, while the second base surface section has optimized transmission parameters for 445-600 nm, achieving balance between protection and comfort.
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 lens effectively absorbs harmful short-wavelength light, reducing exposure and maintaining clear visibility by ensuring sufficient transmission in the visible light spectrum, thus providing enhanced protection and comfort.
Implementation Method 1
The optical element is specifically designed to absorb light with a comparatively high blue component... exhibits optical properties... which enable the absorption of light with a comparatively high blue component
Implementation Method 2
utilizing dichroic filter devices to achieve this
Data Source
Figure 1~2b
Figure 3~4
Figure 5~6
AI summary
The invention relates to an optical element (1), particularly an optical lens for an optical seeing aid device (5), preferably a seeing aid device compensating for visual impairments, comprising a main part (2) that has a main surface (4), said main surface (4) having a first main surface section (4a) that has a transmission of less than 60% in a wavelength range between 400 nm and 445 nm and a transmission of greater than 60% in a wavelength range between 445 nm and 600 nm, and a second main surface section (4b) that has a transmission of less than 60% in a wavelength range between 400 nm and 445 nm and a transmission of less than 60% in a wavelength range between 445 nm and 600 nm.