Lighting plays an import role in our life. First of all, lighting is used for providing an illumination for visibility purposes, e.g. in a room to show objects clearly. Lighting can also be used to create a specific mood, e.g. a series of small spotlights to create an intimate atmosphere; or some dimmed and coloured uplighters to create a more relaxed atmosphere. Apart from its primary purpose, lighting can also be used as a decoration. For example, one can use a set of festive lighting for special occasions and holidays, or simply replace the traditional light bulb with a more modern LED light to add a bit of personality. Modern lighting also tend to be easier to use than traditional lighting, as there are now more convenient ways to control the light bulbs. Technologies such as smart bulbs, which can be controlled via apps, are becoming increasingly popular. Lighting is essential in our lives, either for the purpose of providing illumination, creating moods, or simply for decoration. Technology is also making lighting easier to use and access.