What is the primary purpose of using a diffuser in lighting?

The primary purpose of using a diffuser in lighting is to control glare. Diffusers work by dispersing the light emitted from a source, which softens the intensity in any one spot and spreads it evenly. This diffusion reduces the harshness of direct light, thereby minimizing glare that can be uncomfortable or distracting. By breaking up the light rays and scattering them in multiple directions, diffusers create a more visually appealing and comfortable environment.

While there may be other benefits associated with diffusers, such as enhancing the aesthetic quality of light and contributing to uniform illumination, reducing glare is the fundamental reason they're commonly employed in various lighting applications. This feature is particularly important in settings where prolonged exposure to light is expected, such as in offices or homes, as it contributes significantly to visual comfort and overall atmosphere.