Optically Effective Cover with Convex Secondary Optics
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Solution Overview
Problem
Existing light covers fail to reliably prevent blinding scatter light radiation and color fringes due to insufficient secondary optics on the light exit side, which are caused by geometric structures on the light entry side.
Innovation Solution
A cover with a structured outer surface on the light exit side featuring convex cambered secondary optics, such as spherical caps, arranged directly adjacent to each other without flat surface portions, effectively correcting light exit and reducing scatter light, with geometric elements forming a honeycomb pattern to minimize blind spots and color deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If secondary optics with flat surface portions are used between primary optics, then manufacturing is simplified, but scatter light radiation increases causing blinding and color fringes
Solution Approach 1:
The patent applies curved surfaces (spheroidality) by replacing flat surface portions between secondary optics with convex cambered surfaces. This curvature design redirects light paths to prevent scatter light from reaching the observer, thereby eliminating blinding effects and color fringes while maintaining manufacturing feasibility through injection molding processes.
Solution Approach 2:
The patent implements local quality by applying different surface characteristics to different regions: the secondary optics maintain their refractive function while the interstitial regions between them are given convex cambered surfaces specifically designed to redirect scatter light. This localized differentiation allows each region to perform its specific function optimally.
2Reliability
If secondary optics are distributed with spacing between them, then light correction is achieved, but flat surface portions create blind spots that allow scatter light to pass
Solution Approach 1:
The patent merges the functions of secondary optics with the interstitial regions by making the surfaces between secondary optics convex cambered. This integration ensures that both the secondary optics and the spaces between them actively participate in light correction, eliminating blind spots where scatter light could pass uncorrected.
Solution Approach 2:
The patent achieves continuity of useful action by ensuring that the convex cambered surfaces create an optically effective continuous layer across the entire light exit side. This continuous structure ensures that all light rays, including scatter light from any region, are consistently redirected without gaps or blind spots.
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 significantly reduces scatter light radiation and color fringes, ensuring that almost all light is directed correctly, minimizing blinding effects and maintaining desired radiation characteristics.
Implementation Method 1
the light refraction causes undesirable color fringes or color deviations on radiated surfaces
Data Source
AI summary
A cover for a light source of a light configured to influence illumination characteristics of light of the light source that is configured in particular as one or plural LEDs, the cover comprising a light entry side that is oriented towards the light source; primary optics arranged on the light entry side of the cover and configured to orient the light for an exit from the cover; a light exit side that is oriented away from the light source; and a structured outer surface portion on the light exit side of the cover, wherein structuring elements of the outer surface portion form secondary optics that correct a light exit from the cover, wherein the secondary optics respectively have convex cambered surfaces, wherein the structured outer surface portion is formed by plural secondary optics, wherein the convex cambered surfaces of the secondary optics are arranged directly adjacent to one another.