Monitor light or desk lamp: which lights your work better

Sunrise IT · 13 October 2026

Before LED bars existed, lighting a desk at night meant putting a lamp to one side. Many people still do, and it works, but the two solutions do not do the same thing. If you are deciding between them, these are the differences you really notice when using them.

Where each one puts the light

A desk lamp is a small light source to the side. It concentrates almost everything it emits in a circle about 30 or 40 cm across, right below the lamp head. Outside that circle, the light drops off very quickly.

An LED bar is the opposite: a long light source mounted on the top edge of the monitor, projecting down and forwards. Instead of an intense circle, it spreads the light along the whole width of the desk, keyboard included.

The practical difference is that with a lamp you get one very bright area and the rest of the desk in shadow; with the bar you get a more even level across the whole work surface.

The detail almost nobody considers: the shadow of your own hands

This is what you notice most when you switch. A desk lamp sits to the left or right, at the height of your hands. Every time you write, take notes or use the mouse, your own arm gets between the light and the paper. If you are right-handed and the lamp is on the right, you write inside the shadow of your hand.

The LED bar is above and centred on the keyboard, so shadows fall backwards, under your hands, where they do not bother you. For handwriting or typing while looking at the keys, the difference is immediate.

Reflections on the screen

A desk lamp emits in many directions and sits at the same height as the monitor. If your screen is glossy (not matte), you can easily end up seeing the reflection of the bulb or a haze of light over the picture. The usual fix is to turn the lamp towards the wall or downwards, but then you lose much of the useful light.

An LED bar has its beam aimed down and forwards, and the monitor stays behind the light, never inside it. That is why you can use it with the screen on without any reflections.

How much light you really need

Here is a figure to go by. The European standard for indoor workplace lighting, EN 12464-1, sets 500 lux on the task area for a normal office workstation. The same standard insists that the area around it should not be left dark: the aim is a reasonable level throughout the surroundings, not an intense spotlight surrounded by black.

A desk lamp can easily exceed 500 lux in its circle, and drop to 50 or 100 lux 40 cm away. An LED bar at full brightness is in the same order of magnitude over the keyboard, but keeps it along the whole desk. That is exactly the distribution the standard describes.

Desk space

A desk lamp takes up desk space: the base is usually 15 to 20 cm, plus the arm, plus the cable to the socket. On a small desk with a monitor, keyboard, mouse and notebook, that matters.

An LED bar takes up zero centimetres of usable surface. It rests on the top edge of the monitor, in a space you were not using for anything.

Power use and sockets

• LED bar: powered by 5 V USB, usually between 5 and 10 W. It plugs into the monitor itself, the laptop or any charger. It does not use a wall socket.
• LED desk lamp: between 5 and 12 W on current models, but with a plug and a cable across the desk.
• Old halogen or incandescent lamp: 20 to 50 W, and it also gets hot. If you still have one of these, you will notice the change on your bill too.

When a desk lamp is still the best choice

Not everything favours the bar. There are clear cases where a lamp is the right tool:

• A desk without a monitor. An LED bar needs a screen to rest on. If you study at a clear desk with books and notes, the lamp is the tool.
• Very localised precision work. Soldering, models, sewing, crafts: there you want an intense, adjustable spotlight you can bring within 20 cm of the piece.
• You need to move the light. The articulated arm is its big advantage; the bar stays where the monitor is.

For working or studying in front of a screen, however, the bar handles the three typical problems better: reflections, hand shadows and desk space.

Summary

• Light distribution: the lamp concentrates it in a circle; the bar covers the width of the desk.
• Shadows: the lamp casts them where you write; the bar, backwards.
• Screen reflections: the lamp can cause them; the bar sits in front of the monitor.
• Space: the lamp takes up desk space; the bar takes none.
• Power: the bar runs on USB; the lamp needs a socket.

If what you have in front of you is a monitor or a laptop, two things are worth checking before you buy: which length matches your screen's inches and whether the bar will fit your monitor, especially if it is curved or a laptop lid.

In our catalogue you will find the white-light LED bar, designed for work and study, and the RGB LED bar if you also want coloured light behind the monitor.