The right VDU workplace lighting is more than just a matter of comfort. It influences how well people recognize contrasts, how relaxed the eyes work, and whether a working day is focused or exhausting. Too little light, harsh shadows, glare on the monitor, or sharply fluctuating brightness levels quickly lead to eye strain, headaches, poor posture, and unnecessary mistakes.
Five points are particularly important for good lighting at the VDU workstation: sufficient illuminance, low glare, controlled daylight, an appropriate light color, and careful planning of luminaire positions. In practice, the ArbStättV, ASR A3.4, and DIN EN 12464-1 are primarily used for this in Germany. The following guidelines will help you plan typical office and VDU workstations in a professionally sensible way and make them suitable for everyday use. A more comprehensive overview can be found in our guide on workplace lighting.
What requirements good office lighting must meet
Good lighting in the VDU (computer) workplace must fulfill multiple tasks simultaneously. It must support work on the monitor, as well as reading documents, writing on paper, working on the keyboard, and visual communication within the space. Therefore, simply installing the brightest possible fixtures is not sufficient. A balanced ratio between brightness, contrast, light distribution, and glare control is decisive.
In practice, this means: the work surface needs sufficient light, the room must not appear noticeably darker than the desk and monitor, and no distracting reflections should occur on the monitor, keyboard, or glossy surfaces. In addition, daylight plays an important role because it provides a view outside, supports the biological rhythm, and improves well-being.Good VDU workplace lighting is therefore always a combination of ergonomic artificial lighting, sensible workstation layout, and adjustable sun shading.
The most important benchmark values for VDU workplaces
Several characteristic values are particularly important for planning. They provide a solid orientation, but do not replace a complete lighting plan. Depending on the age of the employees, the visual task, the contrast of the work equipment, and the room geometry, more light or a different luminaire arrangement may be useful in individual cases. An explanation of the recommended lux values for offices can be found in this article.
| Criterion | Guide value | Practical benefit |
|---|---|---|
| Illuminance in the workspace | usually 500 lx | Supports typical computer and office work |
| Immediate surroundings | often 300 lx | Prevents excessive brightness variations in the room |
| More demanding visual tasks | often 750-1.000 lx | Useful for fine details, paperwork, or greater visual needs |
| Glare limitation | UGR ≤ 19 | Reduces distracting direct glare in the office |
| Color rendering | Ra ≥ 80 | Ensures more natural and distinguishable colors |
| Light color | often 4,000 K | Appears professional and bright, well-suited for concentrated work |
| Flicker | as low-flicker as possible to flicker-free | Reduces visual strain and fatigue |
These values do not form a rigid schedule. Older employees or individuals with limited vision often benefit from higher illuminance levels.Mixed workstations involving screens, documents, drawings, or inspection tasks often require more than just the minimum light level. It is also important that the required values are achieved in practice as operational or maintenance values, rather than just when new immediately after installation.
How to prevent glare and reflections
Direct glare from luminaires
Direct glare occurs when luminaires or very bright surfaces within the field of view have an excessively high luminance. Typical causes include unshielded light sources, strongly downward-pointing spotlights directly above the desk, or very small, extremely bright LED surfaces. In offices, a UGR value of maximum 19 is therefore often required. This parameter helps to limit the glare effect of indoor luminaires. You can find suitable luminaires in our selection of UGR 19 office lighting.
In practice, this means: for office and display screen workstations, preferably use luminaires with glare control, LED office panels with suitable optics, linear systems with good shielding, or direct-indirect floor and pendant luminaires. Small spotlights with point-like, very bright light are often perceived as unpleasant at the desk, even if sufficient lux is achieved on paper.
Reflective glare on screen and work surface
Reflective glare is particularly critical for display screen work. It occurs when luminaires, windows, or bright surfaces are reflected in the monitor or cause distracting reflections on glossy table surfaces. The eye then has to constantly distinguish between image content and reflection. The result is rapid fatigue, even if the illuminance is actually sufficient.
A luminaire arrangement to the side of the viewing direction, rather than directly in front of or behind the monitor, has proven to be effective. Matte screens, matte desks, and wide-beam rather than strongly focused light distributions are also helpful. The room itself should be designed to be bright, but not reflective. Light ceilings and walls improve the brightness distribution, while mirrored furniture, glass surfaces, or high-gloss table tops increase the risk of reflections.
Directing daylight intentionally
Artificial light is not the only source of glare. Daylight can also lead to major contrast issues, for example when the monitor is positioned directly in front of a window or when low sunlight enters the room from the side. Therefore, computer workstations require adjustable glare and sun protection, such as blinds, louvers, or suitable shading systems.They must be adjustable in such a way that daylight continues to be utilized without making the screen unreadable or overheating the room.
Daylight, outside view and the correct position of the workstation
Daylight is particularly valuable for offices because it not only supports vision, but also influences the biological clock, alertness and general well-being. A visual connection to the outside also helps with orientation in the course of the day and makes spaces psychologically more pleasant. Therefore, daylight is not seen as a luxury in the planning of workplaces, but as an important quality factor.
The following applies to VDU workplaces: the desk is ideally positioned so that the viewing direction towards the monitor runs parallel to the windows. The risk of glare and reflections is then usually significantly lower than with an arrangement directly in front of or directly with the back to the window.At the same time, daylight must penetrate deeply enough into the room so that not only the area near the window is well-lit. In deeper spaces, tailored artificial lighting is therefore almost always necessary, often supplemented with daylight or presence control.
Which fixtures and light distributions have proven themselves
General lighting, workstation lighting, and visual task
An office normally requires more than a single light source. It is useful to make a distinction between general lighting for the room, lighting for the work area, and optionally extra light for more demanding visual tasks. This way, the base level in the room can be kept uniform without over-illuminating every individual workstation.
This is especially practical for workstations where people alternate between working on a monitor, reading, writing, and inspecting.Here good general lighting can be combined with supplementary task lighting or LED desk lamps. This ensures flexibility without unnecessarily disturbing other people in the room.
Direct, indirect and direct-indirect lighting
Direct lighting
Direct lighting efficiently brings a lot of light to the work surface. It is well suited if fixtures are carefully equipped with glare control and favorably positioned to the side. However, without good optics, the risk of glare, shadows and reflections increases.
Indirect lighting
Indirect light uses the ceiling and walls as reflective surfaces. This improves spatial brightness and can feel very pleasant. However, completely indirect lighting is not always the best solution, as it can lead to monotonous light or excessive brightness on the ceiling with unfavorable surfaces.You can find more practical tips in this article about indirect office lighting.
Direct-indirect lighting
For many office spaces, direct-indirect lighting is particularly compelling. It combines focused light for the work task with a brighter and more serene spatial image. This typically creates better luminance ratios, softer shadows, and greater flexibility for various working situations. In open-plan offices, meeting zones, and areas with mixed use, this concept is often the most practical solution.
Carefully considering room surfaces
Good lighting is created not only by fixtures, but also by the surfaces within the room. Ceilings should preferably reflect light, walls should appear light and matte, and floors may be darker. Desks, cabinets, and equipment benefit from matte, low-reflection surfaces. This keeps the space bright and calm without creating distracting glare points.Anyone who looks only at lux values and ignores surfaces often ends up with poorer lighting conditions in practice than expected.
Light color, color rendering, and flicker-free performance
For most VDU (screen) workstations, neutral white light of approximately 4,000 Kelvin has proven effective. It looks professional, supports focused work, and blends well with daylight in many office environments. Warm white light can be pleasant, but in classic workspaces it often looks a bit too domestic and is less activating. Daylight white can be useful, but should be applied consciously so that the room does not feel too cool or visually tiring.
At least as important is the color rendering. With a color rendering index of at least Ra 80, colors in documents, products, and on surfaces can be assessed with sufficient naturalness. For color-critical tasks, for example in design or printing environments, a higher value may be useful.In addition, there is the issue of flickering: LED lighting should operate with as little flicker as possible to being completely flicker-free, especially at VDU workstations. Lower-quality drivers or unsuitable dimming combinations can lead to invisible flickering, even with modern LED lighting, which increases fatigue and restlessness. Therefore, pay attention to high-quality, matching fixtures, drivers, and dimmers.
Planning, measurement and maintenance
What values matter during planning
During planning, it is not only the brightness of a fixture according to the data sheet that counts. What is decisive is the illuminance level that actually reaches the work surface, how evenly the light is distributed, and whether glare is prevented. Thorough planning takes into account room dimensions, workstation layout, window surfaces, surfaces, fixture optics, mounting height, and the usage profile.At office workstations, the illuminance level is typically measured at the relevant work surface, often approximately at table height.
Maintenance value instead of new condition
A common planning mistake is to look only at the new condition. In practice, luminous flux and system performance decrease over time, for example due to aging, dust, or contamination. Therefore, standards work with maintenance values. If 500 lx must be permanently achieved at the workstation, the installation usually needs to be dimensioned slightly higher at the beginning. A maintenance factor is specifically included for this reason. Anyone who omits this point will often fall below the target value after a period of use.
Post-installation inspection
After installation, it must be verified whether the planned values are actually achieved. This includes illuminance, uniformity, glare, and the practical readability of screens during daytime use.Especially in office spaces, an inspection in an actually furnished room with used sun protection pays off. If workstations are later relocated or expanded, the lighting must also be reassessed. As a rule, electrical modifications and installations must be carried out by qualified professionals.
Practical checklist for selection
- Is the monitor positioned parallel to the windows instead of directly in front of or behind them?
- Is there a suitable lighting level in the work area for screen and paperwork?
- Are the fixtures equipped with glare control and suitable for UGR ≤ 19?
- Is there adjustable shading to prevent glare and excessive heat in the summer?
- Are the desk, monitor, and furniture matte enough to reduce reflections?
- Does the light color suit the application—usually neutral white for offices?
- Is the color rendering index at least Ra 80?
- Does the system operate flicker-free and is it dimmable with compatible components where necessary?
- Has it been taken into account that some individuals require more light?
- Is there a plan for maintenance, cleaning, and long-term light quality?
Suitable LED solutions and support at MeinLED
If you want to upgrade the lighting for individual screen workstations, meeting rooms, or complete office spaces, a system approach pays off.At MeinLED you will find LED panels, linear fixtures, downlights, office lighting, and matching accessories for efficient LED solutions. For larger projects, careful product selection, compatibility checks, and light calculations are particularly important. MeinLED supports you precisely with this through technical advice, project support, and practical recommendations for cost-efficient and energy-efficient lighting concepts.
Frequently asked questions about display workstation lighting
What light is best for screen work?
The best choice is uniform, neutral white light with low glare that supports both the screen and paper documents. In many offices, an illuminance level of approximately 500 lx, a glare limitation of UGR ≤ 19, a color rendering index from Ra 80, and a flicker-free LED solution form a solid foundation.It is also important that fixtures and windows do not cause reflections on the monitor.
What illuminance level does a screen workstation require?
For typical computer and office work, 500 lx is often assumed for the work area. The immediate surrounding area is often below that, for example around 300 lx. For finer visual tasks or greater individual visual needs, 750 lx or more may be useful. The correct illuminance therefore always depends on the actual activity.
What regulations apply to workplace lighting?
In Germany, the Workplace Ordinance (Arbeitsstättenverordnung) and the Technical Rules for Workplaces (Technischen Regeln für Arbeitsstätten)—specifically ASR A3.4 for lighting—are particularly relevant for workplaces. DIN EN 12464-1 is also frequently consulted for concrete lighting design planning.These regulations describe, among other things, requirements for adequate lighting, glare control, daylight, and a visual connection to the outside.
What regulations apply to VDU (display screen) workstations?
Display screen workstations are not just about lux levels, but about overall ergonomics. Relevant foundations include the Occupational Health and Safety Act (Arbeitsschutzgesetz), the Ordinance on Workplaces (Arbeitsstättenverordnung) with its requirements for display screen work, the ASR A3.4 for lighting, and for practical design often also DIN EN 12464-1 and ergonomic standards such as EN ISO 9241. In addition, there is the employer's obligation to conduct a risk assessment.
Is a workstation without daylight permitted?
A permanent office or display screen workstation without daylight is generally problematic. In Germany, daylight and a visual connection to the outside are fundamentally mandatory for workspaces.Exceptions are only considered in special architectural or functional situations and must be assessed separately. For standard offices, therefore, it must always be considered how daylight can be usefully integrated.
Where should the screen be positioned relative to the window?
The most favorable arrangement is usually parallel to the window area. This clearly reduces the risk of direct glare and reflections on the monitor. Unfavorable locations are directly in front of the window, because the brightness contrast then becomes too great, and directly with your back to the window, because reflections often occur on the screen in that case.
Which light color is suitable for an office?
For concentrated office and screen work, neutral white light around 4,000 Kelvin is usually the best choice. It looks bright and professional without seeming too cold.Warm white can work well in living or lounge areas, but is often less appropriate for traditional workspaces.
What does UGR ≤ 19 mean?
UGR stands for Unified Glare Rating and describes the perceived glare from luminaires in indoor spaces. A value of 19 or lower is the standard guideline for offices and screen-based workstations to prevent luminaires from causing distracting glare. The UGR value depends on the luminaire, room geometry, surfaces, and position within the room, not just the product itself.
Why is flicker-free LED lighting important in the office?
Flickering can strain the eyes and, in sensitive individuals, contribute to headaches, restlessness, or quicker fatigue, even if it is not always consciously noticed. Therefore, it is wise to look for high-quality LED fixtures with appropriate drivers and compatible dimmers.Especially during long working hours behind a screen, a flicker-free solution clearly pays off.
