Indoor Grow LED Fixture Lens Coating for Optical Quality
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Solution Overview
Problem
Indoor grow facility light fixtures face degradation in optical quality due to airborne gases and particles, leading to reduced effectiveness over time.
Innovation Solution
A light fixture design featuring LEDs with an encapsulating material that fills the lens, protecting the LEDs from environmental conditions, and a protective coating on the exterior lens to maintain optical integrity and enhance transmission quality, combined with a heat management system and customizable lighting control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If LEDs are exposed to airborne gases and particles in indoor grow facilities, then the light fixture can be simple and inexpensive, but the optical quality of the LEDs degrades over time
Solution Approach 1:
A protective coating is applied as an intermediary layer between the LED and the environmental contaminants (airborne gases and particles). This coating acts as a barrier that prevents direct contact between the LED and harmful substances, thereby maintaining optical quality without requiring complex sealing mechanisms or enclosed housings.
2Reliability
If a protective coating is applied to the lens exterior surface, then optical quality is maintained, but manufacturing complexity increases
Solution Approach 1:
The protective coating is applied as a thin layer with specific optical parameters (refractive index, thickness, transparency) that are optimized to maintain light transmission while providing protection. By carefully controlling these parameters, the coating achieves effective protection without requiring complex multi-layer structures or sophisticated manufacturing processes.
3Reliability
If encapsulating material fills the lens to protect LEDs, then environmental resistance improves, but heat dissipation becomes more difficult
Solution Approach 1:
The encapsulating material is applied selectively in specific regions where protection is needed, rather than uniformly throughout the entire lens structure. This localized application provides environmental protection while leaving critical heat dissipation pathways clear, allowing thermal energy to escape from the LED junction through designated thermal pathways.
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 maintains the optical quality and effectiveness of the LEDs, providing stable and customizable lighting for plant growth while extending the fixture's lifespan and improving environmental resistance.
Implementation Method 1
a protective coating provided over an exterior surface of the lens
Implementation Method 2
Each light source includes a light emitting diode (LED)
Data Source
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AI summary
A light fixture includes a housing, a controller, and a lighting module. The housing defines a first and second portions. The second portion defines a window. The controller is at least partially disposed within the first portion. The lighting module is at least partially disposed in the second portion. The lighting module includes a submount, a plurality of light emitting diodes, a lens cover, an encapsulating material, and a protective coating. The plurality of light emitting diodes is coupled with the submount and is configured to project light through the window. The lens cover includes an exterior surface and overlies the plurality of light emitting diodes and the submount such that the lens cover and the submount define an interior there between. The encapsulating material substantially fills the interior. The protective coating is provided over the exterior surface.