Museum Lighting
Lighting designed for every space
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Museum and Gallery Lighting: Preventive Conservation and High-Fidelity Colour Perception
Lighting in museum environments represents the most demanding technical challenge in lighting engineering: the perfect balance between aesthetic display and the physical preservation of the work.
Engineering for Conservation: Heritage Protection
The main enemy of works of art is non-visible electromagnetic radiation. Our luminaires integrate filters and controlled-spectrum LED technology to mitigate damage:
- Zero UV and IR Emission: We guarantee the complete absence of ultraviolet (UV < 10 μW/lm) and infrared (IR) radiation. This prevents photo-oxidation and thermal stress on pigments, binders and organic substrates (paper, silk, wood).
- Photochemical Damage Management: We deploy dimming systems that allow compliance with the Reciprocity Law (Illuminance × Time), ensuring that the accumulated lux-hour dose does not exceed the work's safety limits.
- High-Precision Flicker-Free Operation: Drivers with ripple-free technology that guarantee stable lighting at 100%, essential for visitor comfort and for high-speed photographic or video documentation without interference banding.
Colour Quality Parameters (CRI > 97 and TM-30)
In a gallery, colour fidelity is non-negotiable. We exceed standard metrics to deliver an absolute visual experience:
- Extreme Colour Fidelity: We use light sources with CRI (Ra) > 97, with particular attention to the R9 (saturated red) value to enhance the depth of pictorial layers.
- TM-30-15 Metric: We evaluate light using fidelity (Rf) and gamut (Rg) indices, ensuring that the spectrum is continuous and that there are no gaps that distort the work's tones.
- Colour Consistency: Selection of chips under 2 MacAdam ellipses (SDCM < 2) to guarantee that there are no tonal variations between different floodlights illuminating the same room.
Lighting Requirements according to the Sensitivity of the Work
| Sensitivity Category | Type of Material | Maximum Illuminance (lux) | Annual Limit (lux-hours/year) |
|---|---|---|---|
| High Sensitivity | Watercolours, textiles, paper, botanical specimens | 50 lx | 150,000 |
| Medium Sensitivity | Oil paintings, woods, leathers | 150 - 200 lx | 450,000 |
| Low Sensitivity | Stone, metals, ceramics, glass | No technical limit (per design) | No limit |
Versatility and Beam Control
The dynamic nature of temporary exhibitions requires highly versatile tools:
- Zoom Optics and Framing Spots: Spotlights with manual or electronic zoom systems that allow the beam to be adjusted (from 5° to 45°) exactly to the perimeter of the work, avoiding light spill on the wall.
- Brightness Control Accessories: Use of honeycomb louvres, visors and softening filters to eliminate direct glare for visitors and soften shadows.
- Wireless Control (Casambi / Bluetooth): Allows conservators to adjust the intensity of each luminaire individually from a tablet at the work, facilitating the staging of complex exhibitions without re-cabling.
Frequently Asked Questions (FAQs) on Museum Lighting
How does the heat from light affect oil paintings?
Although LED does not emit infrared radiation in the beam (radiant heat), the driver and chip generate heat at the rear. Our luminaires feature oversized passive thermal management to ensure that heat is not transferred to the air close to the work, maintaining stable relative humidity and temperature in the room.
What is the relative damage factor per lux?
It is a measure that evaluates how much degrading energy a light source emits per lumen produced. Our museum LEDs have one of the lowest damage factors on the market, allowing higher visibility levels with lower risk of chemical fading.
Is warm or cool light preferable for lighting art?
Technically, it depends on the material. Warm tones (2700K - 3000K) are ideal for woods, golds and classic oils, while neutral or cool tones (4000K - 5000K) may favour contemporary art or stone and metal sculptures. Nonetheless, the current trend is the use of Tunable White to adapt the CCT to the specific work without changing the luminaire.