Monitor Light Bar Buying Guide: ScreenBar, Clamp and Lighting (2026)
Monitor light bar vs desk lamp: clamp fit, color temperature, auto-dimming and backlight – with five verified BenQ and Quntis models on Amazon.de.
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Contents
A monitor light bar (ScreenBar) sits on top of your display and lights the keyboard and desk — without a lamp base on the surface. Compared with a classic desk lamp, that saves space and, with asymmetric optics, is meant to cut screen glare. This buying guide covers clamp fit, color temperature, auto-dimming and backlight, plus five models currently available on Amazon.de.
Transparency: We have not tested these lamps ourselves. Specs come from manufacturer pages (BenQ, Xiaomi, Quntis) and verified Amazon.de product pages (as of October 2026). We deliberately omit prices because they change constantly.
Why a light bar instead of a desk lamp?
According to BenQ, a monitor light bar illuminates the desk without shining directly into your eyes or onto the panel. Its asymmetric ASYM-Light optics aim light at the work surface to reduce reflections. The American Optometric Association lists poor lighting and glare among factors in digital eye strain — balanced task lighting helps, but it does not replace breaks or a correctly set monitor.
BenQ and ANSI-style office guidance often cite about 500 lx on the task area. Whether a model reaches that at your desk depends on height, distance and room light — manufacturer figures are lab values, not a guarantee for your setup.
You also free desk space for a mouse pad and webcam. If the display hangs on an arm, double-check clamp clearance — see the monitor arm buying guide.
The key criteria
1. Clamp and monitor thickness
Measure thickness at the top center of the monitor (including any rear bulge). Typical ranges:
| Model class | Maker thickness claim |
|---|---|
| BenQ ScreenBar (classic) | 1–3 cm; curved from ~1500R (not every frame) |
| BenQ ScreenBar Pro / Halo 2 | ~0.43–6 or 0.43–6.5 cm; curved 1000–1800R |
| Quntis Focus 40 cm | flat/curved, often 0.3–8 cm per Quntis comparison |
| Quntis Focus Radar 52 cm | flat/curved 17–32 inch, often 0.3–10 cm |
Ultra-thin OLED bezels, strong curves or built-in webcams can break the fit. BenQ often includes a webcam accessory for Pro and Halo 2 so the camera sits above the bar.
2. Light distribution and glare control
Look for asymmetric optics (light forward/down, not flat onto the panel). BenQ cites an ~18° cut-off for ScreenBar Pro and Halo 2 and coverage around 85 × 50 cm at 500 lx. The classic ScreenBar covers about 60 × 30 cm per BenQ. Quntis advertises a 45° asymmetric design and high center lux (listings often say ~900 lux) — always check the live listing.
3. Color temperature and CRI
Common ranges are 2700–6500 K (BenQ) or 3000–6500 K (many Quntis Focus models). BenQ ScreenBar models often claim Ra ≥ 95; Quntis Focus models list Ra 98 on the series comparison. High CRI helps for design and stream setups, but it does not replace a calibrated monitor.
4. Controls, sensors and backlight
- Touch on the bar: fast, no extra gadget
- Remote / wireless controller: handy when the monitor is far away (Halo 2 Amazon listing: controller battery up to ~3 months)
- Auto-dimming: matches brightness to ambient light
- Presence sensor: turns on when you approach, off after ~5 minutes without motion (BenQ Pro / Halo 2) — can annoy very still work
- Backlight: Halo 2 (and Quntis Glow-class) light behind the monitor to soften screen-to-room contrast — useful in dark rooms
5. Power
Most bars run on USB 5 V. BenQ ScreenBar uses USB-A (~5 V / 1 A), Pro often USB-C (up to ~5 V / 1.7 A, max ~8.5 W), Halo 2 specs list USB-C up to 5 V / 3 A. Quntis typically lists 5 V / 1 A with a USB-C cable. A weak monitor USB port can flicker — use a wall adapter or powered hub if needed.
Five example models
Example model
BenQ entry: ScreenBar
Classic monitor lamp with touch, auto-dimming and ASYM-Light. Per Amazon.de: ~500 lx over 60 × 30 cm, 2700–6500 K, CRI > 95, clamp for 1–3 cm thickness, curved from ~1500R. Sold by BenQ German Webstore, shipped by Amazon (checked October 2026).
- Series
- BenQ ScreenBar
- Control
- Touch on the bar
- Color temperature
- 2700–6500 K
- CRI
- > 95
- Clamp
- 1–3 cm thickness
- Power
- USB-A, ~5 V / 1 A
Best if you have a flat standard setup and want BenQ without backlight.
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Example model
Wide coverage: BenQ ScreenBar Pro
Per BenQ and Amazon.de: 3rd-gen ASYM-Light, center > 1000 lx, ~85 × 50 cm at 500 lx, 16 brightness and 8 color-temperature steps, auto-dimming, ultrasonic presence sensor, clamp 0.43–6.5 cm / 1000–1800R, USB-C, webcam adapter included. Sold by BenQ German Webstore, in stock (checked October 2026).
- Series
- ScreenBar Pro
- Coverage (500 lx)
- ~85 × 50 cm
- Sensors
- Presence + auto-dimming
- Clamp
- 0.43–6.5 cm, 1000–1800R
- Power
- USB-C, max ~8.5 W
Best if you use ultrawide/curved screens or need a wider desk wash.
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Example model
Dark-room backlight: BenQ ScreenBar Halo 2
Per BenQ: ASYM-Light front plus tri-zone backlight, ~85 × 50 cm at 500 lx, front and back 2700–6500 K, wireless controller with display, presence and auto-dimming, clamp 0.43–6 cm / 1000–1800R, USB-C up to 5 V / 3 A. Amazon.de: BenQ German Webstore, in stock (checked October 2026).
- Series
- ScreenBar Halo 2
- Light
- Front + backlight
- Control
- Wireless controller
- CRI (front)
- Ra ≥ 95 (Rf ≥ 96)
- Clamp
- 0.43–6 cm, 1000–1800R
Best if you play or stream in a dark room and want softer screen-to-wall contrast.
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Example model
Budget try-out: Quntis Focus 40 cm (touch)
Per Amazon.de and Quntis comparison: 40 cm bar for ~17–27 inch, touch, auto-dimming, 45° asymmetric optics, USB-C 5 V / 1 A, Ra 98 on the Focus series. Sold by Fortune Source, shipped by Amazon, limited stock (checked October 2026).
- Model
- Focus 40 cm black
- Control
- Touch + auto-dimming
- Length
- 40 cm
- Monitor size
- ~17–27 inch
- Power
- USB-C, 5 V / 1 A
Best if you want to try a light bar cheaply — verify clamp and webcam clearance on your own monitor.
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Example model
Large / curved monitors: Quntis Focus Radar 52 cm
Per Amazon.de and Quntis: 52 cm bar, remote, radar/motion sensor, auto-dimming, flat and curved ~17–32 inch, Ra 98, USB. Sold by Fortune Source, shipped by Amazon (checked October 2026).
- Model
- Focus Radar 52 cm grey
- Control
- Remote + sensor
- Length
- 52 cm
- Monitor size
- ~17–32 inch
- CRI
- Ra 98 (series claim)
Best if your monitor is wider or curved and you want a remote.
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Models compared
| Model | Focus | Backlight | Typical clamp |
|---|---|---|---|
| BenQ ScreenBar | Brand entry | no | 1–3 cm |
| BenQ ScreenBar Pro | Wide area, sensors | no | 0.43–6.5 cm |
| BenQ Halo 2 | Dark rooms | yes | 0.43–6 cm |
| Quntis Focus 40 cm | Budget touch | no | Focus series |
| Quntis Radar 52 cm | Large/curved screens | no | Focus Radar |
Matching gaming glasses for the setup
A light bar brightens keyboard and desk — some people also try blue-light filter glasses against subjective screen fatigue. The American Academy of Ophthalmology finds no solid evidence for that and does not recommend them as eye protection; breaks and good lighting still matter more. If you still want to try lightweight non-prescription computer glasses, see models and an honest framing in the gaming glasses buying guide.
Example model
Low-key entry without strong yellow tint: Cyxus blue-light glasses (CY-109)
Classic non-prescription computer glasses. Amazon specs: model CY-109, weight about 23.6 g, includes a cleaning cloth. Shipped by Amazon.
- Type
- Full frame, non-prescription
- Model
- CY-109
- Weight
- ~23.6 g
- Extra
- Cleaning cloth
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Checklist before you buy
- Measured top-center thickness and curvature?
- Need backlight (dark room) or front light only?
- Webcam on the bezel — room left, or need an adapter?
- USB port strong enough (prefer 5 V / ≥ 1 A; Pro/Halo often happier on a USB-C adapter)?
- Dual monitors: one bar per screen or a desk-clamp model (e.g. BenQ Max)?
- Desk and monitor height OK — see gaming desk and gaming monitor?
Frequently asked questions
Do I need a monitor light bar?
Only if the keyboard and front desk are too dark or your desk lamp causes glare. Good room lighting alone can be enough.
Does every light bar fit every monitor?
No. Thickness, curve, webcam and bezel shape decide. Check the listing and Amazon.de returns.
ScreenBar or Halo?
Without a dark room, front light (ScreenBar / Pro) is usually enough. In a dark setup with a wall behind the monitor, backlight (Halo 2) helps reduce contrast glare per BenQ.
Will it block my webcam?
Sometimes. BenQ Pro/Halo 2 ship with a webcam accessory; Quntis often mentions a 90° USB-C plug and optional webcam kits. Check your own setup first.
Sources
As of November 2026 (gaming-glasses extension). Specs come from manufacturers and verified Amazon.de product pages (ASINs in the article):
- BenQ – How to choose a monitor light bar
- BenQ ScreenBar Pro
- BenQ ScreenBar Halo 2
- BenQ ScreenBar Halo 2 – Specs
- Xiaomi Mi Computer Monitor Light Bar – Specs
- Quntis Light Bar Series Comparison
- American Optometric Association – Computer vision syndrome
- Amazon.de listings: B0785D93KD, B0CZ94MB2R, B0DK59YKRS, B0DTYXQTG7, B0DZHK97PF, B08788T6LR
- AAO – Are Blue Light-Blocking Glasses Worth It?
Makers change specs and variants from time to time. If something material changes, we update this article.
* Ad link: As an Amazon Associate I earn from qualifying purchases. Links go to Amazon.de – the price stays the same for you.