An illuminated display cabinet effectively showcases collectibles, porcelain, or crystal. However, as soon as light hits glass, disturbing reflections often occur, making it difficult to view the objects. Reflections superimpose the exhibits, light sources become visible, and instead of a clear presentation, a restless image is created. The challenge is to create sufficient brightness without light sources or room lighting reflecting in the glass. With the right placement, light color, and technique, this conflict can be resolved.
Position light sources above the display cabinet
The most effective method against reflections is to mount light sources on the ceiling of the display cabinet. LED strips or flat recessed spotlights directed downwards illuminate the objects from above and create hardly any reflections on the side glass surfaces. The light beam runs almost perpendicular to the exhibition surface, leaving the glass transparent for the viewer. For display cabinets with multiple levels, installation under each glass plate is recommended so that even lower shelves are evenly illuminated.
It is important to maintain a distance of at least 8 to 12 cm between the light source and the glass pane so that no light spots appear in the glass. Diffusers or scattering discs distribute the light evenly and prevent harsh shadows. For tall display cabinets over 180 cm in height, additional lighting in the middle area can be useful to avoid dark zones.
Use indirect backlighting
Backlighting highlights objects without the light reflecting in the front glass. LED strips running vertically behind an opaque back panel or in a niche create a glowing background. This technique is particularly suitable for display cabinets with a closed back or for wall niches. The light does not shine directly onto the glass front but is reflected by the back panel.
For transparent display cabinets without a back panel, a matte acrylic sheet can be used as a diffuser. It is mounted about 3 to 5 cm behind the objects, with the LED strips running behind it. The result is a uniform luminous surface that emphasizes silhouettes and minimizes reflections on the front pane. The color temperature should be between 2700 and 3000 Kelvin to make wood and warm materials appear natural.
Avoid glare through correct light color and brightness
Too much light intensifies reflections and makes glass reflective. An illuminance of 150 to 300 lux is sufficient for most display cabinet contents. For comparison: a workplace is illuminated with 500 lux, a living room with about 100 lux. The brightness should be oriented to the surroundings. In a darker room, a display cabinet with 200 lux already appears prominent; in a bright room, it can be increased to 300 lux.
Warm white light with 2700 to 3000 Kelvin creates less contrast between the display cabinet and the room and reduces the perception of reflections. Neutral white light from 4000 Kelvin appears cooler and emphasizes reflections more strongly. Dimmable LED systems allow adjustment depending on the time of day and room lighting. A dimmer with a memory function saves the preferred setting.
Anti-reflection through glass type and surface treatment
Special glass with a matte coating or structured surface scatters incident light and reduces reflections. However, such glass is more expensive and changes the appearance of the display cabinet. An alternative is to subsequently apply an anti-reflective film, which is glued to the inside of the glass panes. These films reduce reflections by up to 70 percent but slightly affect color reproduction.
For high-quality collections where every reflection is disturbing, replacing the glass panes with museum glass can be useful. This glass combines anti-reflection with UV protection and protects sensitive materials from fading. The investment is particularly worthwhile for valuable objects and display cabinets that remain permanently in a fixed location.
Coordinate room lighting with the display cabinet
Strong light sources behind the viewer reflect in the display cabinet pane. Ceiling floodlights, large windows, or bright wall lights should not be positioned directly opposite the display cabinet. If this is unavoidable, curtains or blinds help regulate the incoming daylight. Evening lighting should be diffuse and indirect, for example, through upward-facing spotlights or wall lights with shades.
The viewing angle plays a role: those standing frontally in front of the display cabinet see fewer reflections than when viewed from the side. The placement of the display cabinet should be chosen so that the usual viewing angle is as perpendicular as possible to the glass surface. A distance of at least 50 cm from the wall behind the display cabinet facilitates the installation of lighting and improves air circulation.
| Type of lighting | Position | Recommended brightness | Reflection risk |
|---|---|---|---|
| LED strips at the top | Display cabinet ceiling, downwards | 150–250 Lux | Very low |
| Recessed spotlights | Ceiling, vertical | 200–300 Lux | Low |
| Backlighting | Back panel, vertical | 100–200 Lux | Very low |
| Side spots | Left/right outside | 150–250 Lux | Medium to high |
Technical requirements for LED lighting
LED strips for display cabinets should have a color rendering index of at least CRI 90 so that colors appear true to life. Cheap strips with CRI 80 distort red and blue tones. The power is usually between 4 and 10 watts per meter, depending on the desired brightness. For a display cabinet 100 cm wide, 50 to 80 cm of LED strips are usually sufficient.
- Mount transformer outside the display cabinet to avoid heat build-up
- Route cables through pre-drilled openings or cable ducts, do not lay them visibly
- Use aluminum profiles with covers to hide individual LED points
- Provide a switch or remote control for convenient switching on and off
- For valuable objects, use UV-free LEDs to prevent material damage
You can find suitable pieces under Display Cabinets and Table Lamps. Information on how the pieces are constructed, available dimensions, and delivery times can be found on Eichholtz Display Cabinets and Wine Cabinets and Eichholtz Table Lamps.
Frequently Asked Questions
Which light color is best suited for display cabinets?
Warm white light with 2700 to 3000 Kelvin is ideal for most display cabinet contents. It naturally emphasizes warm materials such as wood, porcelain, and gold and creates less contrast with the room light. Neutral white light from 4000 Kelvin is suitable for modern objects made of metal or glass but enhances reflections.
How do I prevent heat damage to sensitive objects?
LED lighting generates significantly less heat than halogen or incandescent lamps. Nevertheless, the transformer should be mounted outside the display cabinet. A distance of at least 10 cm between the light source and the object prevents heat build-up. For very sensitive materials such as wax or old textiles, time-controlled lighting that is not continuously switched on is also recommended.
Can I retrofit existing display cabinets with lighting?
Yes, self-adhesive LED strips can be retrofitted in most display cabinets. They are attached to the ceiling or under the shelves. The cable leads through a small hole to the outside to the transformer. Battery-powered LED strips are an alternative if no power source is nearby but must be recharged regularly or fitted with new batteries.
How often should the lighting be switched on?
Continuous lighting is neither necessary nor recommended. It increases power consumption and can stress sensitive materials. A timer or motion detector switches the light on only when needed. For representative rooms where the display cabinet is intended to be an eye-catcher, three to four hours of lighting in the evening are sufficient.