Abstract: A backlighting device includes a light guide plate having a first side and a second side opposite to the first side, and a point light source to generate light incident on the first side of the light guide plate. The light guide plate has a plurality of longitudinal diffraction microstructures which are arranged and oriented according to the location of the point light source. The microstructures are varied gradually at least in size, position, density, or shape relative to the location of the point light source. When light is incident on the light guide plate from the point light source, the microstructures, which are varied gradually at least in size, position, density, or shape, function to regulate and adjust the illuminance of bright and dark areas in the light guide plate so as to provide uniform brightness.

Abstract: A revegetation and greening system is used to control erosion and to decorate infertile environments or steep structures. This system comprises one or many revegatation devices. Each device holds self-sufficient materials for growing plant with minimal need for frequent watering or advanced care. A layer of synthetic nets or grids can be placed on the surface of these structures to secure these devices. This system creates a stable and suitable environment for the growth of many plants in various conditions. Furthermore, by using many layers of this system simultaneously, it can provide erosion control and structure decoration in a very short time.

Abstract: The present invention relates to a revegetation and greening system that is used to control erosion and to decorate infertile environments or steep structures. This system comprises one or many revegetation devices. Each device holds self-sufficient materials for growing plant with minimal need for frequent watering or advanced care. A layer of synthetic nets or grids can be placed on the surface of these structures to secure these devices. This system creates a stable and suitable environment for the growth of many plants in various conditions. Furthermore, by using many layers of this system simultaneously, it can provide erosion control and structure decoration in a very short time.