Primary systems with integrated lenses;
Secondary optics come in the form of lenses, reflectors or diffusers
There are various types of secondary optics but the main are as follows:
wide-angle dispersion optics to illuminate large spaces
narrow angle dispersion optics for main lighting
asymmetric dispersion angle optics for street and shelf lighting
very narrow angle dispersion optics for accent lighting, corridor lighting
With the help of lenses and reflectors, different beam angles can be created. In case of narrow angle optics, for instance, angle of 30°, you will have a focused and concentrated light beam suitable for floodlights. In case of wide-angle optics, for instance, angle of 150°, you can illuminate a bigger space. All of them are designed to change the path of light in a specific and controlled way, but they all produce different effects.