Segmented Illumination Lens Reducing Light Loss
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Solution Overview
Problem
Traditional lenses used in illumination devices, such as light boxes, result in unnecessary light loss as they illuminate regions that do not need to be highlighted, like the top surface, due to their design that cannot avoid illuminating these areas.
Innovation Solution
A lens with an incident surface, emergent surface, and reflective surface is designed to refract and reflect light in a way that forms fork-shaped light beams, deflecting light away from unnecessary regions, ensuring only the intended areas are illuminated, thereby reducing light loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a traditional lens is used to illuminate the light box, then the top surface and side surfaces are illuminated, but light is wasted on regions that do not need illumination (such as the top surface without advertising characters)
Solution Approach 1:
The lens is divided into multiple functional regions: a first region with a first refractive index for generating a first light beam, a second region with a second refractive index for generating a second light beam, and a third region for other optical functions. This segmentation allows different parts of the lens to control light in different directions, preventing waste on unnecessary surfaces while maintaining effective illumination coverage.
Solution Approach 2:
Different regions of the lens are assigned different refractive indices tailored to their specific functions. The first region has a refractive index optimized for illuminating side surfaces, while the second region has a refractive index optimized for illuminating front surfaces. This local optimization ensures that light is directed precisely where needed without wasting energy on unnecessary areas.
2Loss of energy
If a traditional lens illuminates all surfaces including the top surface, then comprehensive coverage is achieved, but unnecessary light loss occurs on regions without advertising characters or patterns
Solution Approach 1:
The lens is segmented into distinct functional zones with different refractive indices. The first region directs light toward side surfaces, the second region directs light toward the front surface, and the third region handles other optical requirements. This segmentation eliminates unnecessary illumination of the top surface while preserving comprehensive coverage of areas that require advertising character illumination.
Solution Approach 2:
The refractive index parameter is varied across different regions of the lens to control light direction. By changing the refractive index from the first region to the second region to the third region, the lens precisely controls where light goes, reducing waste on the top surface while maintaining adequate illumination area for advertising content.
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 directs light to specific regions, minimizing light loss by avoiding illumination of non-essential areas, optimizing light distribution and usage within the light box.
Implementation Method 1
a first portion of light from a light source is incident upon the incident surface, refracted by the emergent surface, and then emerges to form a first light beam
Implementation Method 2
a second portion of light from the light source is incident upon the incident surface, reflected by the reflective surface, refracted by the emergent surface, and then emerges to form a second light beam
Data Source
AI summary
Various embodiments may relate to a lens for an illumination device, including an incident surface, an emergent surface, and a reflective surface connected between the incident surface and the emergent surface. The lens includes a first axis as an optical axis of the lens, a second axis perpendicular to the first axis and extending in a longitudinal direction of the lens, the first axis and the second axis defining a symmetrical surface of the lens, and a third axis perpendicular to the symmetrical surface, a first portion of light from a light source is incident upon the incident surface, refracted by the emergent surface, and then emerges to form a first light beam, and a second portion of light from the light source is incident upon the incident surface, reflected by the reflective surface, refracted by the emergent surface, and then emerges to form a second light beam.