German 
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Italian Up to five independent zones
The number of zones follows function and pane proportions, not a catalogue maximum. Two well-justified zones often give better operation and calmer detailing than five arbitrary ones.
Zoned switchable smart glass
DGF Segment. One pane, multiple privacy scenarios.
Independently controlled zones frost only the selected part of the glass. Daylight remains where it is useful and privacy appears exactly where it is needed.
- up to 5 independent zones
- ~1 W/m² power consumption
- APP scenes and control
- 01Privacy in a selected part of the pane
- 02Zoning aligned with the architecture
- 03Each zone controlled separately or as a scene
DGF solution
Do not close the whole space when you do not have to.
DGF zoned switchable smart glass divides the active surface into independent zones. Keep the upper part clear, frost the lower part or create your own sequence without mechanical blinds or extra layers.
We align the zones with framing, furniture lines and the way the room is used. The technology strengthens the interior composition instead of creating an arbitrary pattern.
Best suited to:
- Medical rooms
- Bathroom windows
- Boardrooms
- Residential glazing
How the solution works
Zoning is not a graphic. It is the electrical map of the pane.
DGF Segment uses the same PDLC principle as Classic, but divides the active layer into independently powered zones. Each zone can be clear or frosted without changing the others. One pane can preserve a view at eye level while screening the lower area beside a desk or bed.
The layout is not created later in an app. Division lines, zone count and connection order are part of glass production, so they must match the final dimensions and architecture. The control interface mirrors the physical pane and combines its states into useful scenes.
Important: zones cannot be moved or added after the glass is manufactured. We first design real usage scenarios, then draw the zoning and release the pane for production.
Each zone has its own circuit
Independence requires planned connections, a controller and labelled wiring. Documentation maps each zone to its channel so commissioning and later service remain clear.
A scene combines several decisions
Users do not need to switch zones one by one. A “consultation”, “presentation” or “evening” scene can set several zones to a programmed combination with one command.
Division lines work with the interior
The height of a worktop, handrail, window transom or furniture edge suggests natural divisions. Aligning these lines makes the technology read as an intentional architectural decision.
What you gain
Technology that follows the space.
The result is not defined by one parameter. It comes from the right pane, considered controls and installation detailing.
Independent zones
Each zone can switch state without frosting the whole pane.
Scenes in one action
Saved settings adapt the glass to meetings, focused work or rest.
Daylight under control
Clear zones continue to admit daylight while the others provide privacy.
Designed zoning
The number and proportions of zones follow the size, purpose and rhythm of the partition.
From concept to commissioning
One point of responsibility. Three clear stages.
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01
Map the zones
We define the number, height and order of zones on the final pane size.
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02
Engineer the circuits
Each zone receives a controlled connection and a clear control logic.
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03
Program the scenes
We group zones into convenient scenes operated by a switch, remote or app.
Space and purpose
Privacy can begin and end exactly where it is needed.
DGF Segment makes sense when users have different needs at different heights or parts of the glass. It is not decorative zoning; it is a tool for managing views.
Medical and treatment room
Discretion around the patient, light above
Lower partition zones can stay frosted during an examination while the upper area continues to share light and lets staff remain aware of the surroundings. Another scene can frost the whole pane. Heights follow equipment, patient position and circulation rather than a universal template.
Boardroom and executive office
Eye-level screening without closing the whole room
A middle zone can block direct corridor views while the upper one preserves openness. During a confidential meeting one scene switches every zone. The layout needs coordination with table height, seated eye level, door frames and any presentation screen.
Residential window and bathroom
A screened lower zone with view and light retained
In a ground-floor bathroom or bedroom window the lower zone can maintain privacy while the upper area stays clear. At night the whole pane turns frosted. Before manufacture we assess the frame, moisture conditions, exterior lighting and routes for several controlled circuits.
A project, not a gadget
The interface mirrors the physical glass zoning.
Control becomes intuitive when the app layout mirrors the physical zones. Users see exactly which part will change and can combine zones into everyday scenes.
View DGF projectsProduct specifications
Facts instead of vague promises.
Every pane is technically confirmed for its final dimensions and installation. The values below describe the base product configuration.
Ask about your dimensions| Number of zones | up to 5, depending on the project |
|---|---|
| Controls | independent or scene-based |
| Base glass | Opti White Pilkington, 4 mm |
| Layers | EVA 0.8 mm + PDLC layer 0.36 mm |
| Power | 48 V DC |
| Energy use | ~1 W/m² |
| Size and layout | made to project |
Typical applications
- private rooms
- bathrooms
- meeting rooms
- clinics
- apartments
- offices
Informed selection
Scenarios first. Then the number and height of zones.
The most common mistake is drawing an impressive pattern without checking how it will be used. A good zoned design can be explained through a few simple scenes and remains intuitive even to a first-time user.
Write down user situations
Who needs privacy, from which direction, at what height and for how long? The answers naturally define zone boundaries.
Limit everyday choices
More zones give flexibility but also more channels and states. In practice we design the smallest number that supports the required scenes.
Coordinate the layout with the structure
Division lines should correspond to frames, façade modules, furniture and views. Their position is confirmed on the final pane drawing.
Retain local operation
An app makes scenes convenient, but a switch by the entrance may be fastest. Local and remote control should be defined with the user.
Solution family
Choose the glass for the decision it needs to support.
Not every project needs the same configuration. Compare the core roles and confirm the details during consultation.
DGF Classic
Whole pane: clear or frosted
The versatile choice for most partitions
DGF Segment
Independently switched zones
When privacy should cover only part of the pane
DGF Farbe
Switching combined with colour
Interiors with a strong identity
Smart window
Privacy integrated into the window
Bathrooms, apartments and private interiors
DGF + SUPLA
App, scenes and remote control
When glass becomes part of a smart home or BMS
Knowledge before a decision
See how zones work in real interiors.
Zoning should follow human behaviour and control logic. These guides explain PDLC, channels, scenes and the office context.
DGF article
Switchable-glass controls
Channels, scenes, switches, app and BMS without needless complexity.
DGF article
How does PDLC glass work?
Active-layer construction, two states and technical limitations.
DGF article
How smart glass supports office work
Privacy and focus in spaces that change function during the day.
DGF article
How to assess privacy after dark
A practical lighting and viewing-direction test for every zone.
Questions before a project
Clarify first. Quote second.
Pricing depends on dimensions, pane count, controls and installation. A few answers usually identify the right direction.
01Can the zones have different heights?
Yes. Zone proportions and order are defined by the project and confirmed before production.
02Can all zones switch at once?
Yes. Zones can work independently, in groups or as one saved scene.
03When should the zoning be planned?
Before ordering the glass. The active-layer zoning is part of pane production, so it is based on final dimensions.
04Can zone count or height be changed after manufacture?
No. Zoning is formed in the active layer and sealed into the laminated pane. Before production we approve a drawing with zone dimensions, cable exits and controller-channel assignments.
05Does every zone need a separate switch?
No. Zones can be controlled in an app, grouped into scenes or assigned to multifunction switches. Interface design should minimise daily actions while retaining the required control.
06Is the boundary between zones visible?
The active-layer division is a designed element and may be visible, especially when adjacent zones are in different states. Its exact position is shown on the drawing and aligned with frames and furniture.
07What determines the price of zoned smart glass?
The pane size, number and geometry of zones, independent channels, wiring, controller, scenes, installation and commissioning all matter. More complex zoning and control logic increase the design scope beyond the glass itself.
08Can the zones form any pattern?
Not every layout is feasible. Zoning must account for the active-layer technology, minimum distances, cable exits, pane size and controls. Rather than promise any pattern, we prepare a manufacturable layout that remains clear in everyday use.
09What happens to the zones during a power cut?
Unpowered zones return to the frosted state. The design should confirm whether that default is right for every zone and whether a specific function requires backup power.
Technical consultation