Parabolic LED Lamp with Segmented Arc Lens
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Solution Overview
Problem
Existing LED lamps suffer from nonuniform light distribution and high production costs due to complex structures and inefficiencies in light reflection, particularly in parabolic aluminum reflector lamps using COB light sources, which result in limited irradiated areas and decreased light transmittance.
Innovation Solution
A parabolic LED lamp design featuring a revolving-body-shaped lamp body with an arc lens and a parabolic reflective cup, where the inner wall of the arc lens is composed of alternating hexagonal and rhombic lenses that refract and reflect light to achieve adjustable beam angles and uniform light intensity, reducing the complexity and cost of the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple reflections are used to distribute light, then uniform illumination is improved, but device complexity and production cost increase
Solution Approach 1:
The arc lens is segmented into multiple lens areas (first lens areas and second lens areas) with different refractive functions. Each lens area independently controls light distribution in specific directions, achieving uniform illumination without requiring multiple reflective surfaces. This segmentation allows the light to be distributed uniformly through a single-pass refraction system rather than multiple reflections.
Solution Approach 2:
The patent introduces an arc lens as an intermediary optical element between the LED light source and the external environment. This arc lens with multiple lens areas acts as a mediator that refracts and distributes light in a controlled manner, replacing the need for complex multiple reflection systems while achieving uniform illumination distribution.
2Illumination intensity
If COB light source with lens is used to achieve predetermined beam angle, then light distribution is improved, but light transmittance decreases and manufacturing cost increases
Solution Approach 1:
The arc lens is divided into multiple lens areas with different refractive functions. Each lens area is optimized to refract light in specific directions, allowing efficient light distribution without the need for opaque or semi-opaque materials. This segmentation enables high light transmittance while achieving controlled beam angle and distribution.
Solution Approach 2:
The patent changes the optical parameters by using an arc-shaped lens structure with multiple lens areas instead of a conventional single lens or reflective cup. The arc shape and multiple lens areas allow precise control of light refraction angles, achieving the desired beam angle with high transmittance and without the manufacturing complexity of COB assemblies.
3Adaptability or versatility
If reflective cup and lens are used together, then beam angle control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent extracts and eliminates the reflective cup from the optical system, retaining only the arc lens with multiple lens areas. This extraction simplifies the system to a single optical element, removing the alignment precision requirements between multiple components while maintaining beam angle control through the engineered lens areas.
Solution Approach 2:
The arc lens with multiple lens areas performs multiple functions that were previously distributed across separate components: it provides beam angle control, light distribution, and optical focusing all in a single element. This multi-functionality eliminates the need for precise alignment between separate reflective and refractive components.
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 design allows for adjustable beam angles and uniform light distribution without ladder phenomena, reducing manufacturing costs and maintaining high light intensity across a wider effective angle, while using a single parabolic reflective cup for efficient light management.
Implementation Method 1
the light of the LED light source being reflected and distributed twice by passing through the parabolic reflective cup and the arc lens
Implementation Method 2
the first lens areas uniformly distributed with a plurality of small hexagonal lenses with a same specifications, the second lens areas uniformly distributed with a plurality of small rhombic lenses with a same specifications; after the light of the LED light source being reflected and distributed twice by passing through the parabolic reflective cup and the arc lens, a beam angle of the LED light source can be changed
Data Source
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AI summary
The invention discloses a parabolic LED lamp, comprises a lamp body (1), a lamp base (2), an arc lens (3), a parabolic reflective cup (4), an LED light source (5), and a drive (6); wherein the parabolic reflective cup (4) is embedded and installed in the lamp body (1); the LED light source (5) is installed in the bottom (41) of the parabolic reflective cup (4) and toward to the arc lens (3); the drive (6) internally configured in the lamp body (1) connects the lamp base (2) and the LED light source (5); the inner wall of the arc lens (3) is formed with a plurality of first lens areas and second lens areas spaced apart, the first lens areas uniformly distributed with a plurality of small hexagonal lenses (31) with a same specifications, the second lens areas uniformly distributed with a plurality of small rhombic lenses (32) with a same specifications.