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To select a window: 10 important tips
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- To select a window: 10 important tips
- Do you prefer a glass window/display with high scratch resistance or do you want a strong window, maybe even molest proof?
- When you want a thin material we make foils with several shielding layers or mesh foil.
- What is the size of the window /display, what is the visual area, and what is the max outside dimension? (when you want a quote please add the quantity)
- What is the application of the window/display or requested shielding performance? (how many dB reduction is needed and in which frequency range)
- For higher shielding performance the light transmission is lower. When you need clear sight you can use a shielded coating.
- Please realize sunglasses have only 5% light transmission so 95% is blocked but you can still look through them, so a light transmission of 60% is still very good for a window.
- When you need high performance (especially at lower frequencies) you need a metal mesh or a grid, for medium performance you can work with a shielded coating, and for excellent performance, we make windows with both techniques.
- Take care with mesh for this can interfere with the pixels in the display and you get Newton rings (moiré) This can be solved by making the mesh under a certain angle.
- When you work with mesh for a display keep the distance between the object and shielding material small for better optical effects.
- Temperature:
for temperature under -30°C please contact our specialist, see below the maximum temperatures.
<50°C | Polycarbonate-PVC-acryl-glass can be fully laminated with mesh foil of transparent shielding foil |
<110°C | Fully mesh laminated glass or copper grid expanded mesh polycarbonate |
>110°C | Glass with edge bonded mesh or metal-framed mesh |
Shielding Performance Electric
Shielding Performance Magnetic
Shielding Performance Plane Wave
Important note:
Each window can have little air bulbs, dust, and some other very little malfunctions. When this is absolutely not acceptable go for the selected quality.
Window material selection | Price indication low to high |
---|---|
Scratch-resistant glass | $ |
High-temperature glass | $ |
Mesh foil | $$ |
Acrylic plate | $$ |
Molest proof polycarbonate | $$$ |
Shielding type | Price indication low to high |
Shielding performance low to high |
---|---|---|
Glass shielded coating (max. size 1500 x 3000mm) | $ | + |
Shielded coating foil (max. width 1250mm) | $$ | ++ |
Mesh foil (max. width 1000mm) | $$ | +++ |
Edge bonded mesh (max. width 1200mm) | $$$ | +++ |
Shielded coating foil on laminated acrylic/polycarbonate/glass (max. width 1250mm) | $$$ | + |
Mesh foil on laminated acrylic polycarbonate glass | $$$$ | +++ |
Edge bonded knitted mesh (max. width 2000mm) | $$$$$ | ++++ |
Fully laminated mesh (max. 1500 x 3000mm) | $$$$$$ | ++++ |
Termination | Price indication low to high |
Shielding performance low to high |
---|---|---|
Silver busbar (medium performance) | $ | + |
Flying mesh (high performance) | $$ | ++ |
Step with silver busbar | $$$ | ++ |
Step with flying mesh | $$$$ | + |
Average attenuation (dB) with different transparent shielding materials
Shielding solution | Attenuation (dB) | |||
---|---|---|---|---|
10 kHz | 1 MHz | 1 GHz | 10 GHz | |
9000 - 9300 Mesh foil | 22 | 105 | 70 | 45 |
9400 Copper-grid PET film | 30 MHz ~ 1000 MHz attenuation capacity ≥ 30 dB | |||
9600 EMI-shielded glass | - | 60 | 38 | 17 |
9700 Mesh-foil windows | 22 | 105 | 70 | 45 |
9800 ESD foil | Not for shielding use, but rather for ESD applications | |||
9900 Transparent shielding foil | - | 70 | 20 | - |
9910 Transparent shielding-foil windows | - | 70 | 20 | - |
These values are measured under laboratory conditions. In other situations results may differ; please read our Guarantee. For more information about the shielding performance, click on the specific product / solution |