They are meant for:
* Beautifying interior and exterior walls with stylish light patterns.
* Ambient lighting to create a warm and welcoming atmosphere.
* Highlighting walls, hallways, staircases, and entrances.
* Improving the appearance of homes, hotels, restaurants, offices, and shopping malls.
* Providing soft accent lighting, rather than lighting up an entire room.
The first picture (square cube design) creates a modern geometric beam effect, making it popular for contemporary homes and commercial buildings.
The second picture (hourglass design) also throws light upward and downward, giving a decorative and elegant look to walls.