Tubular LED Fixture Strip-Shaped Convex Lens Array Glare Reduction
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Solution Overview
Problem
Existing LED lamps with point source illumination suffer from glare, reflection glare, and uneven light distribution, leading to poor illumination and increased production costs due to the need for multiple LEDs to achieve a linear light source effect, which results in bulky fixtures and energy attenuation.
Innovation Solution
A tubular LED light fixture featuring a strip-shaped convex lens array that converts point light sources into linear light sources by diffusing light in a controlled manner, utilizing a reflection wall to optimize light utilization and a polarizing lens for uniform light distribution, integrated with a compact lamp holder design for ease of manufacture and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a diffusion lamp cover is added to create a linear light source, then the glare and reflection glare are reduced, but the light distribution becomes uneven and energy attenuation increases
Solution Approach 1:
The invention segments the light distribution function by using multiple independent optical components: a diffusion lamp cover for glare reduction, a reflective cup for light collection, and a lens array for precise light distribution control. Each component performs a specific function, and their combined effect achieves uniform light distribution while eliminating glare.
Solution Approach 2:
The lens array acts as an intermediary between the LED light source and the illuminated surface. It receives light from the LED, processes it through precise optical design, and redistributes it uniformly across the target surface, thereby solving both the glare problem and the uneven distribution problem simultaneously.
2Area of stationary object
If multiple LEDs are used to achieve linear light source effect, then the illumination coverage is improved, but the production cost increases and the fixture becomes bulky
Solution Approach 1:
A reflective cup is introduced as an intermediary component to collect and redirect light from a single LED. The reflective cup design efficiently captures light that would otherwise be wasted and redirects it toward the lens array, enabling a single LED to achieve the illumination coverage that would traditionally require multiple LEDs.
Solution Approach 2:
The invention changes the optical parameters of the system by using a lens array with specific focal lengths and aperture designs. This allows a single LED to produce a linear light source effect with uniform distribution, replacing the need for multiple LEDs and reducing both fixture size and production cost.
3Shape
If a diffusion lamp cover is used to create linear light source, then the light is diffused, but the linear light source becomes blurred and dim
Solution Approach 1:
The lens array serves as a precise optical intermediary that receives diffused light from the diffusion lamp cover and refocuses it into a clear, bright linear light source. The lens design maintains the linear shape while concentrating the light energy, preventing the blurring and dimming effects caused by excessive diffusion.
Solution Approach 2:
The diffusion lamp cover is designed with locally optimized diffusion properties - it diffuses light sufficiently to eliminate glare but maintains enough directional control to preserve the linear light source shape and brightness. The lens array then further refines the local light quality in its focal region.
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 tubular LED light fixture achieves improved light uniformity and reduced energy attenuation, enhancing the light-sweeping effect while minimizing the number of LEDs required, thus reducing production costs and improving lighting efficiency.
Implementation Method 1
strip-shaped convex lens array... for converting each point light source into a plurality of consecutive sub point light sources
Implementation Method 2
convex lens array... for converting each point light source into a plurality of consecutive sub point light sources
Implementation Method 3
the reflection wall is provided on both sides of the point light source for reflecting the lateral light from the point light source to the light incident plane of the strip-shaped convex lens array
Implementation Method 4
lens, disposed on the lamp holder in a light-emitting direction of the point light source for adjusting light distribution of the point light source on a plane perpendicular to the length direction of the tubular LED light fixture
Data Source
AI summary
A tubular LED light fixture includes a lamp holder; printed circuit board; a plurality of point light sources; lens; strip-shaped convex lens array, located between the lens and printed circuit board and arranged along the length direction of the tubular LED light fixture for converting each point light source into a plurality of consecutive sub point light sources, and the sub point light source converted by the adjacent point light source is connected or overlapped. The invention adopts a strip-shaped convex lens array which forms a line light source only by diffusing light from the point light source only in the length direction of the strip light fixture, preventing light from diffusing in multiple directions, so that the line source is purified. The lens is arranged to perform light distribution in the other direction to the line source, thereby reducing energy attenuation and ensuring the light effect.