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SPD Smart Glass (Dynamic Solar Control)

Dynamic regulation of daylight, glare, and solar heat for architectural facades, luxury yachts, and transportation.

DYNAMIC SOLAR & THERMAL CONTROL ON DEMAND

ADPI's SPD (Suspended Particle Device) Smart Glass revolutionizes glazed building envelopes. It modulates solar radiation and thermal heat transfer in real time, eliminating glare while preserving clear, unobstructed panoramic views of the outside world.

Solar & Thermal Heat Control

Blocks up to 99.5% of solar radiation and visible light, drastically reducing interior solar heat gain and HVAC cooling expenses.

Continuous Variable Shading (Dimming)

Smooth transition and tunable shading. Not restricted to a binary ON/OFF state: fine-tune any intermediate tinting level to match changing sunlight intensity.

Total UV & Infrared Protection

Continuous blockage of over 99% of harmful ultraviolet and infrared rays in every state, protecting occupants and preventing fabric and furniture fading.

Sunglasses Effect (Preserved Views)

Unlike PDLC which switches to frosted white for privacy, SPD darkens with a sophisticated deep blue tint while preserving crisp, clear outward views.

Energy Efficiency & Sustainability

Lowers building thermal cooling load by up to 40%, slashing air-conditioning consumption and supporting LEED, BREEAM, and WELL building certifications.

Engineered Durability & Longevity

High molecular stability nanoparticle film tested to withstand over 100,000 hours of continuous direct solar exposure and severe thermal cycling.

HOW SPD SMART GLASS WORKS

Suspended Particle Device (SPD) technology enables custom, on-demand glass tinting. In its natural unpowered state (0V), microscopic particles absorb light, blocking up to 99.5% of visible radiation. When voltage is applied, particles align to let light through, providing crystal-clear outward views while substantially reducing HVAC cooling costs.

Interactive Demonstration of SPD Solar Control

Toggle the switch to experience transitions between unpowered dark tint (OFF) and energized clear state (ON)

OFF (DARK TINT) ON (CLEAR)
SPD Smart Glass in Switched-Off State - Dark Solar Tint SPD Smart Glass in Switched-On State - Clear & Transparent
STATUS: OFF • MAXIMUM TINT (99.5% SOLAR BLOCKAGE)
Voltage: 0V AC (Unpowered) Power: 0 W/m² Visible Transmission: < 1% (Dark Tint) Solar Blockage: Up to 99.5%
OFF State (Dark Tint)
Natural State • 0V
GLASS + ITO (0V) GLASS + ITO (0V) ACTIVE SOLAR ABSORPTION (99.5% BLOCKAGE)
  • Natural Unpowered State (0V): In the absence of applied voltage, microscopic suspended particles disperse randomly via spontaneous Brownian thermal motion.
  • Solar Radiation & Light Absorption: In their chaotic orientation, suspended particles intercept and absorb photons, achieving up to 99.5% blockage of visible light and solar heat.
  • Thermal Comfort Without Mechanical Blinds: Keeps interiors cool and protected from harsh glare, performing like high-performance polarized architectural sunglasses.
ON State (Clear / Transparent)
Energized • Up to 110V AC
ELECTRODE (+110V) ELECTRODE (NEUTRAL) DIRECT TRANSMISSION (CLEAR VIEWS)
  • Dipolar Alignment via Electric Field: The applied AC electrical field forces suspended nanoparticles to immediately align perpendicularly in parallel with light rays.
  • Clear Vision & Natural Daylight: Daylight passes directly through the glass with up to 50% visible light transmission (VLT), providing crystal-clear outward views.
  • Variable Shading (Continuous Dimming): By modulating the applied AC voltage up to 100V, the exact level of daylight tinting is tuned in real time with absolute precision.
1. Outer Architectural Safety Glass (Toughened / Laminated) 4-12 mm
2. Structural Optical Interlayer (EVA / PVB / TPU) Thermal Protection
3. Active SPD Film (Suspended Nanoparticles) Switchable SPD Core
4. Structural Optical Interlayer (EVA / PVB / TPU) Thermal Protection
5. Inner Float or Extra-Clear Architectural Glass 4-12 mm

Multi-Layer Composition with Hermetic Edge Sealing

ADPI's SPD Smart Glass is manufactured via rigorous autoclave lamination, encapsulating the light-controlling suspended particle film between high mechanical strength interlayers and airtight perimeter isolation.

  • A
    Toughened Architectural Glass:

    Thermally treated outer and inner safety glass engineered to resist thermal shock, structural deflection, and wind loads in high-rise facades and marine vessels.

  • B
    Advanced Hermetic Edge Sealing:

    Aerospace-grade perimeter barrier protecting the active SPD core against humidity infiltration, marine salinity, and condensation.

  • C
    Intelligent Regulation Electronics:

    ADPI digital controllers with modulated variable-voltage output, supporting direct integration with automated weather stations and solar irradiance sensors.

SPD SOLAR CONTROL GLASS SPECIFICATIONS

Certified parameters verified under European and international building energy efficiency, automotive, and marine standards.

Multi-Layer Composition Diagram of SPD Smart Glass with IR Protection and PET-ITO
Thermal Control
Up to 99.5%

Light & Solar Heat Blockage

Blocks up to 99.5% of visible light, eliminating exterior glare and drastically reducing solar heat gain (SHGC) to maintain indoor comfort without blinds.

Tunable Shading
< 0.5% - 50%

Transmission Range (VLT)

Controlled continuous dimming that enables light transmission ranging from under 0.5% in deep dark tint to 50% in clear transparent state.

Total Protection
> 99%

UV & Infrared Radiation Blockage

Continuous filtration of damaging ultraviolet radiation and infrared thermal heat across all tint levels, preventing upholstery and interior fading.

Versatility
Multi-Sector

Certified Applications

Architectural facades, skylights, luxury superyachts, high-speed rail transit, and automotive panoramic roofs.

High Efficiency
< 5 W/m²

Energy Consumption

Maximum consumption of <5 W/m² exclusively in active clear mode. In unpowered rest state (protective dark tint), energy consumption is 0 W.

Safe Modulation
100V AC

Modulated Operating Voltage

Powered via specialized ADPI electronic controllers operating at 100V AC square wave for smooth, silent, and reliable dimming.

Climate Resistant
-10°C to +90°C

Operating Temperature Range

Engineered specifically for exterior building envelopes subjected to intense solar radiation, frost, and extreme thermal swings.

Proven Longevity
> 100,000 Hours

Certified Operational Lifespan

Accelerated weathering tests demonstrate over 25 years of uninterrupted architectural performance with zero tonal degradation.

INTEGRATION OF SPD GLASS IN DEMANDING MARKETS

The unique capability to modulate daylight and solar heat while preserving outward views makes SPD technology the benchmark for architecture, marine, and premium mobility.

FREQUENTLY ASKED QUESTIONS ABOUT SPD SMART GLASS

Technical guidance on the dynamic solar control properties and applications of SPD smart glass technology.

SPD (Suspended Particle Device) Smart Glass is engineered specifically for thermal solar and glare control: when darkened, it performs like polarized sunglasses, rejecting heat and light while preserving crisp outward views. In contrast, PDLC Smart Glass switches to a frosted/milky opaque state for complete visual privacy, blocking see-through vision in both directions while diffusing natural daylight.
Unlike binary switchable technologies, SPD glass provides continuous variable shading (dimming). By modulating the AC voltage, users or building management systems can smoothly select any intermediate tint level from under 0.5% (deep solar tint) up to 50% visible light transmission.
In its unpowered dark state (0V), it blocks up to 99.5% of solar radiation and more than 99% of damaging UV and infrared heat. This drastically lowers the Solar Heat Gain Coefficient (SHGC), cooling interior spaces naturally and slashing air-conditioning costs by up to 40%.
Yes. ADPI intelligent electronic controllers feature native interfaces for KNX, DALI, Modbus, 0-10V, and Crestron. They can be linked directly to exterior solar sensors to adjust tint levels autonomously as the sun moves across the sky.
For fail-safe passive protection, the natural state of SPD glass without power is OFF (Dark Tint). Thus, during a power loss, the building facade remains fully protected against extreme solar heat and blinding glare with zero energy required.
Certified ADPI Warranty Coverage

Direct Manufacturer Warranty & Technical Backing

All projects backed by a 3-year warranty on switchable glass and smart films, and 2 years on controllers and power supply equipment provided by ADPI. Certified European manufacturer with dedicated technical after-sales support.

3 YEARS Glass & Film
2 YEARS Controllers

Contact the ADPI Engineering Team

Looking to integrate SPD Solar Control Smart Glass into your facade, luxury villa, superyacht, or mobility project? Our technical engineering team will assist you promptly with a customized quotation.

ADPI European Headquarters & Plant Polígono Industrial Camporosso, Calle Santo Domingo 8, Nave I, 28806 Alcalá de Henares (Madrid), Spain
Customer Support & Manufacturing +34 911 489 661 / +34 919 337 789
Technical Inquiries & Commercial Sales info@adpi.es | Dpto.comercial@adpi.es

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