Compare Monitor Light Bars – Side-by-Side Specs

Asymmetric optics refers to a lens design that directs light downward and forward onto your desk, while preventing light from reflecting off the monitor screen. Traditional lamps cast light in all directions, causing glare. Asymmetric designs use a specialized reflector and lens to create a controlled beam pattern. BenQ pioneered this and most quality bars now use similar technology.

Most quality monitor light bars deliver 400–500 lux at desk level. This is sufficient for typical desk work—reading, typing, and general computer use. Higher lux isn't always better; too much light can cause glare or create harsh contrast. 400–500 lux is the sweet spot for most users. Budget models around 350 lux are still adequate for basic tasks.

Dial controls offer finer, more intuitive adjustment—you can quickly dial to the exact brightness you want. Touch controls are more compact but often have less precision (e.g., 3–5 brightness levels vs. continuous). The BenQ wireless dial is the gold standard. For budget options, touch controls are perfectly acceptable and keep the bar slim.