How to distinguish between light guide and diffuser?

Panel light diffuser refers to the scattering phenomenon caused by light penetrating other media during the advancement process. As long as two different media light from A to B will cause light penetration or reflection due to the inhibition of refractive index or interference material or Absorption, the penetration part will be called light diffusion due to dispersion, and it has three physical phenomena.

Panel light guides use optical grade acrylic/PC sheets and then use high-tech materials with extremely high reflectivity and no light absorption to print light guides on the underside of optical grade acrylic sheets using UV screen printing technology. point. The optical grade acrylic sheet is used to absorb the light from the lamp to stay on the surface of the optical grade acrylic sheet. When the light hits the respective light guiding points, the reflected light will diffuse to various angles, and then the reflection condition is destroyed by the light guide plate. Shot from the front. The light guide plate can be uniformly illuminated by various light guiding points of different sizes and sizes. The purpose of the reflective sheet is to reflect the light exposed from the bottom surface back into the light guide plate to improve the efficiency of light use. Functional differences:

The main function of the Led diffuser is to break up the luminous flux and distribute the light evenly (some composite diffusing plates can control the exit angle in addition to homogenizing the light); support the backlight structure to protect the underlying optical material from damage.

The main function of the light guide plate is to guide the light flux of the LED panel light source to be evenly distributed throughout the surface. His key role is to guide the distribution of light; use the reflection mechanism to more efficiently utilize the light flux and control the light distribution.

Differences in application: Acrylic light guides are suitable for LED lighting fixtures with direct light sources, such as grille lamps and high-grade aluminum lamps. PC diffuser is suitable for side-source LED lighting fixtures, such as flat panel lights, professional viewing lights, usually used with light guides. The PS diffuser is mainly used for some low-grade ordinary LED lights.