LED Light Diffusion Material Preventing Color Temperature Drift
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Solution Overview
Problem
Existing light diffusion materials used for secondary dimming of LED lamps cause a change in color temperature, making it difficult to accurately control the color temperature of the finished LED lamp strip, which fails to meet the precise lighting color requirements of users.
Innovation Solution
A light diffusion material composition for LED lamps, comprising an A phase (94.09%), a B phase (2.91%), and a C phase (3%), with specific raw materials and molecular weights, including polydimethylmethylvinylsiloxane, silicon dioxide, hydroxyl-terminated polydimethylsiloxane, and dispersants, which are finely ground to achieve a particle size of less than or equal to 200 mesh.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional light diffusion material (A phase 97%, B phase 3%) is used for secondary dimming of LED lamps, then the LED lamp achieves waterproofing function, but the color temperature drifts and cannot be accurately controlled
Solution Approach 1:
The light diffusion material is divided into three distinct phases (A phase 94.09%, B phase 2.91%, C phase 3%) with different functional compositions. The A phase provides base diffusion, the B phase enhances diffusion properties, and the C phase specifically addresses color temperature stability through titanium dioxide and pigment additives, allowing each phase to contribute to different aspects of performance
Solution Approach 2:
The patent creates a composite light diffusion material by combining three phases with different material compositions and ratios. This composite structure allows the material to simultaneously achieve waterproofing, light diffusion, and color temperature stability that cannot be achieved with conventional two-phase materials alone
2Reliability
If the LED lamp is placed inside a silicone lamp strip for waterproofing, then the LED lamp achieves waterproofing protection, but the light emitted causes color temperature change
Solution Approach 1:
The C phase is specifically designed with localized functional additives (titanium dioxide 4-6%, pigment 0.12-0.22%) that target color temperature control in the regions where light diffusion occurs most intensely, providing localized correction to maintain accurate color temperature
Solution Approach 2:
The patent modifies the chemical composition parameters of the light diffusion material by introducing specific ratios of titanium dioxide and pigments in the C phase, which change the optical properties of the material to prevent color temperature drift while maintaining waterproofing functionality
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 proposed light diffusion material effectively prevents color temperature drift in LED lamps, ensuring accurate color temperature control and meeting the high-quality lighting color requirements, while also performing secondary dimming on the LED lamp beads.
Implementation Method 1
the light emitted by the LED lamp penetrates through the silicone lamp strip to be diffused
Data Source
AI summary
The present application relates to a light diffusion material applied to secondary dimming of an LED lamp and a preparation method thereof. The light diffusion material for secondary dimming includes the following raw materials in percentage by weight: an A phase 94.09%, a B phase 2.91%, and a C phase 3%, where the A phase includes the following raw materials in percentage by weight: polydimethylmethylvinylsiloxane 55-95%, silicon dioxide 5-45%, hydroxyl-terminated polydimethylsiloxane 0-8%, and an additive 0-1%; the B phase includes the following raw materials in percentage by weight: silicon dioxide 70-80%, polydimethylsiloxane 10-20%, a 107 raw rubber 6-10%, and a dispersant 1.8-2.2%; and the C phase includes the following raw materials in percentage by weight: silicon dioxide 60-70%, polydimethylsiloxane 10-20%, a 107 raw rubber 6-10%, titanium dioxide 4-6%, a dispersant 5.88-7.78%, and a pigment 0.12-0.22%. By adding titanium dioxide to the light diffusion material of the lamp.