A Guide to Lighting Glass Display Cases: Types, Pros, and Cons

Lighting and Conservation in Display Cases

Lighting is a powerful tool in exhibition design, helping to highlight objects, guide visitor attention, and create atmosphere. However, light also generates heat and UV radiation, both of which can damage sensitive materials over time. Museums must therefore balance visual impact with conservation needs.

The Arts Council advises that lighting should enhance presentation without compromising conservation and that maintenance should be possible without opening the display volume. With this in mind, the sections below outline common lighting types used in glass display cases and their best applications.

Fibre Optic Lighting

Fibre optic lighting uses a remote light source placed outside the display case. Light is carried through fibre optic cables to small, discreet endpoints within the case.

Pros

  • Excellent conservation performance as heat is kept outside the case
  • No UV or infrared emission at endpoints
  • Highly discreet and flexible placement
  • Adjustments can be made without disturbing the display

Cons

  • Higher upfront cost
  • Requires specialist installation
  • Remote illuminator needs periodic maintenance

Best used for: Conservation-critical displays and sensitive objects.

LED Lighting

LED lighting offers bright, efficient illumination and is widely used in modern display cases as strips, spots, or track fixtures.

Pros

  • Energy efficient with long lifespan
  • Lower heat and UV output than older lamp types
  • Available in varied formats and colour temperatures
  • Strong balance of cost and performance

Cons

  • Heat still requires management
  • Colour rendering varies by quality
  • Poor placement can cause glare or reflections

Best used for: Everyday museum displays, retail cases, and temporary exhibitions.

Fluorescent Lighting

Fluorescent lighting provides broad, diffused illumination but is declining in use due to environmental regulations and conservation concerns.

Pros

  • Even, soft lighting suitable for large displays
  • Historically inexpensive

Cons

  • Emits UV radiation and needs filtering
  • Produces noticeable heat
  • Bulky fittings reduce design flexibility
  • Being phased out in many settings

Best used for: Existing cases approaching replacement.

Halogen Lighting

Halogen lighting is rarely recommended due to its high heat output and ultraviolet radiation.

Pros

  • Excellent colour rendering
  • Strong directional control

Cons

  • Very high operating temperature
  • Shorter lifespan than LEDs
  • UV output requiring filtering
  • Low energy efficiency

Best used for: Non-conservation environments only.

Integrated Lightboxes

Integrated lightboxes sit above the display case and illuminate objects through a diffusing panel, keeping the light source outside the display volume.

Pros

  • Uniform, even illumination
  • Maintenance access without opening the display case
  • Suitable for UV filters and neutral density films

Cons

  • Heat must be carefully vented
  • Less suitable for dramatic lighting effects
  • Adds height and weight to the case

Best used for: Cases requiring broad, even lighting with safe maintenance access.

Key Conservation Considerations

  • Vent heat away from the display and use UV filters where needed
  • Design lighting so maintenance does not require opening the case
  • Balance visual impact with object safety

Conclusion

The choice of lighting directly affects both visitor experience and long-term preservation. Fibre optic systems offer the highest conservation performance, LEDs provide versatility and efficiency, and traditional lighting options are increasingly limited by heat, UV output, and environmental concerns. Thoughtful planning helps ensure that lighting enhances displays without putting collections at risk.