BenQ

BenQ ScreenBar_Black Monitor Light with Auto-Dimming

4.7 (3019 reviews)

A USB-powered monitor light bar with auto-dimming and 95+ CRI for glare-free desk illumination.

$109.00*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The BenQ ScreenBar is a purpose-built LED monitor light designed to improve workspace illumination without the drawbacks of traditional desk lamps. Its defining feature is ASYM-Light technology, an asymmetric optical design that projects light forward and downward onto your desk surface while preventing any light from hitting your monitor screen. This eliminates the screen glare and reflections that commonly occur with overhead or side-mounted lighting, reducing eye strain during extended work sessions. With a Color Rendering Index above 95, the ScreenBar renders colors with near-daylight accuracy, making it particularly valuable for designers, photographers, and anyone whose work depends on faithful color perception.

The light bar clamps onto your monitor's top bezel via a weighted clip that requires no adhesive or mounting hardware, fitting bezels between 1 and 3 cm thick and accommodating ultrawide and curved monitors with curvatures of 1500R or greater. It draws power from a single USB-A connection, requiring 5V at 1A or higher, and delivers 500 lux of brightness across a 60x30 cm area. An integrated ambient light sensor powers the auto-dimming function, which continuously adapts brightness to your environment. Touch controls along the top of the bar provide manual adjustment of brightness and color temperature across a 2700K to 6500K range. The aluminum and polycarbonate construction keeps the unit lightweight at 1.2 pounds while maintaining a premium, understated appearance that complements any desk setup.

Key Features

EYE CARING & TOP QUALITY - Flicker-free and anti-blue light hazard LED light source with CRI>95 for natural colours. Long lifespan LED tested to last for 17 years with 8 hours of daily use.

PATENTED CLAMP - Mounts securely on monitors 0.4"-1.2" thick, saving space with a patented counterweight clamp with great stability. Fits ultrawide and curved monitors of 1500R and above. (Note: Special monitor back design may affect compatibility.)

NO SCREEN GLARE - With carefully calculated beams, ScreenBar’s ASYM-Light technology prevents screen reflections and direct glare, ensuring comfortable screen reading.

WIDE LIGHTING COVERAGE - Provides a 500lx brightness across a wide 23.6" x 11.8" (60x30cm) area, effectively balancing ambient light and screen brightness for better eye comfort. Easily powered via USB-A.

AUTO DIMMING & TOUCH CONTROL - Built-in light sensor automatically adjusts brightness based on ambient light. Intuitive touch controls allow manual adjustments of brightness and colour temperature from 2700K-6500K.

Specifications

Light Source
Flicker-free, anti-blue light hazard LED
Color Rendering Index (CRI)
>95
Color Temperature
2700K–6500K (adjustable)
Brightness Coverage
500 lux over 60x30 cm
Glare Reduction
ASYM-Light asymmetric optics
Power
USB-A (5V/1A or higher)
Controls
Auto Dimming & Touch Control
Monitor Compatibility
1–3 cm bezel thickness; ultrawide/curved ≥1500R
Material
Aluminum, Polycarbonate
Dimensions
4"D x 18"W x 4"H
Weight
1.2 lbs
Brand
BenQ
Model
ScreenBar_Black

Pros & Cons

👍 Pros

  • Asymmetric light design illuminates your desk without casting glare on the screen
  • CRI above 95 delivers accurate, natural color rendering for detail-oriented work
  • Auto-dimming sensor continuously adjusts brightness to match ambient conditions
  • Adjustable color temperature from 2700K to 6500K suits different times of day and preferences
  • USB-A powered with no external adapter required, keeping your desk clean

👎 Cons

  • Touch controls on top of the bar can be difficult to reach on tall or high-mounted monitors
  • Compatible only with monitors that have bezels between 1 and 3 cm thick, excluding bezel-less designs
  • No wireless or remote control option; adjustments require physically touching the light bar
  • Single USB-A connection means you lose one USB port on your monitor or computer

Frequently Asked Questions

No. The ScreenBar uses BenQ's patented ASYM-Light asymmetric optical design, which directs light downward onto your desk while keeping it off your screen to prevent reflections.
A built-in ambient light sensor detects the brightness in your environment and automatically adjusts the ScreenBar's output to maintain a comfortable 500 lux across your workspace.
It fits monitors with bezels between 1 and 3 cm thick. It also works with ultrawide and curved monitors with a curvature of 1500R or greater, though compatibility with some curved displays may vary.
No. It is powered entirely through a USB-A connection (5V/1A or higher), so you can plug it into your monitor's USB port, a computer, or any standard USB adapter.
Yes. The touch controls on top of the bar let you adjust color temperature from a warm 2700K to a cool 6500K, so you can match your ambient lighting or personal preference.