The influence of refractive index on LED production, the refractive index affects the final luminous efficiency of LED by affecting the efficiency of chip to glue and the light to air. In recent years, LED lighting products have low power consumption, long service life and high brightness. Low thermal energy, green environmental protection, sturdy and durable, rich colors, diversified product appearance, stable performance, etc. are increasingly attracting attention from people all over the world, and a route to the indoor lighting application market. In order to remain invincible in the LED market, its "high reliability" is increasingly becoming the most important feature of LED products. The quality of the LED refractive index directly limits the reliability of the LED product.
Applications in LEDs include: mixed phosphor powder silicone series, MODING packaging material series, TOP chip packaging material series, lens-filled silicone material series, integrated high-power LED silicone materials. Compared with similar products, AP series silicones can provide stronger thermal conductivity and higher heat resistance, and the effective life is more than doubled, which can effectively improve the lumen efficacy and thermal stability of LEDs.
In the targeted LED packaging material industry production line, ATAGO high refractive index LED refractometer DR-M2, to help improve the production efficiency, product performance and quality of user products. High refractive index packaging materials must be developed using a high precision refractive index refractometer DR-M4 to determine the refractive index of the material. ATAGO is a professional manufacturer of refractometers. Its unique high refractive index Abbe refractometer has a refractive index measurement range of up to 1.87. It also has a DR-M4/1550 multi-wavelength refractometer capable of measuring 450-1550nm. The refractive index at the wavelength is a good helper for LED industry research.
The influence of refractive index on the production of LED, the refractive index affects the final luminous efficiency of the LED by affecting the efficiency of the chip to the glue and the light to the air. The refractive index of the chip is generally around 2.4, the general glue is 1.5, the air is 1. Generally speaking The higher the refractive index of the glue, the higher the light extraction efficiency.
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Classification of LED silicone encapsulant materials:
Serial number | Refractive index | Low modulus of elasticity | Medium elastic modulus | High modulus of elasticity |
1 | 1.40-1.45 | Low refractive index gel | Low refractive index elastomer | Low refractive index resin body |
2 | 1.50-1.55 | High refractive index gel | High refractive index elastomer | High refractive index resin body |
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