Basic Knowledge Of Led Light Guide Panel-RINA TECH
Jan 25, 2021
The working principle of the light guide plate of the LED panel light: when the light enters the light guide plate from the two sides of the light source and hits the reflection point, it is diffusely reflected to the surface of the light guide plate: the other part is the light directly penetrates the light guide plate to the surface. The closer the LED light guide plate is to the light source, the stronger the direct light, and the weaker the farther away. On the other hand, the reflection point closer to the light source is small and distant, and the diffusely reflected light is less.
Introduction to the design principle of LED panel light light guide plate:
The light guide plate of the panel light is based on optical grade acrylic, using LCD display and backlight module technology, through the full high light transmittance of the light guide point, and the light guide point is designed by the computer to convert the light of the light guide plate into a surface light source. Light state manufacturing molding.
Melting point of light guide plate of LED panel light:
The light guide plate of LED panel light generally uses PC material, which is amorphous material without a fixed melting point. Taking Makrolon 2405 as an example, the glass transition temperature and Vicat softening point are both 145 degrees, and the molding temperature is 280 degrees.
What is the difference between the LED panel light guide plate and the diffuser plate:
From the material point of view:
The diffuser base material is PC
The base material of the LED panel light guide plate is PMMA
In terms of functionality:
The main functions of the diffuser are:
1. Disperse the luminous flux to make the light evenly distributed (some composite diffusers can not only make the light uniform, but also control the exit angle).
2. Support the backlight structure to protect the underlying optical materials from damage.
Main functions of LED light guide plate:
1. Guide the luminous flux of the LED point light source to be evenly distributed in the entire surface. Its key role is to guide the distribution of light.
2. Use reflection mechanism to more efficiently use luminous flux and control light distribution
