Bronze spectral selector - Dark
Lumen 20B
- Category : Solar
- Type : Semi-reflective
- Shades : Neutral Bronze
- % Light transmission : 21%
- % Light reflection - outside : 47%
- % Total solar energy rejected : 79%
Demonstration Video
Action on the infrared spectrum -- lumen 20B IN
IR rejection test under controlled environment
The infrared lamp (75W) heats two steel plates connected to a thermometer, the whole being placed behind a glass plate (4mm).
The adhesive film presented on this page is stuck on the right side.
Actual test duration: 30 min
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Data sheet
| Simple glazing clear glass 4mm | Double glazing clear glass 4/16/4mm | |
|---|---|---|
| Optical property | Semi-reflective | |
| Shades (out/in) | Neutral Bronze | |
| Face of application on glazing | Inside | |
| Adhesive type | CDA | |
| % Light Transmission | 21 | 20 |
| % Glare reduction | 77 | 76 |
| % Light reflection (out/in) | 47/32 | 48/33 |
| Emissivity value | 0.52 | |
| Winter value U (W/m²°K) | 4.96 | 2.52 |
| Value of solar g factor | 0.21 | 0.33 |
| Shading coefficient | 0.24 | 0.38 |
| % Transmission of solar energy | 13 | 12 |
| % Reflection of solar energy | 49 | 47 |
| % Absorption of solar energy | 38 | 41 |
| % Total solar energy rejected | 79 | 67 |
| % UV Transmission | < 1 | |
| Colour Rendering Index | 93 | 93 |
| Film thickness (µm) | 50 | |
| Limited warranty (years) | 10 | |
Compatibility on glazing
| lumen 20B IN SR CDA | |
|---|---|
| - Preapproved | - Recommended study | - Not approved | |
| Single glazing Clear or tinted |
|
| Double glazing Clear or tinted |
|
| Double glazing Clear Low-E #2 |
|
| Double glazing Clear Low-E #3 |
|
lumen 20B IN SR CDA
Data sheet
| Type of medium | Glass |
| Application on glazing | Interior |
| Adhesive type | CDA |
| Optical property | Semi-reflective |
| Visibility | Transparent |
| Glare problem | Average |
| Heat problem in summer | Significant (+8°C) |
| Thermal insulation in winter | No - Not necessary |
| Solar heat gain in winter | No - Not necessary |
| Limit fading | UV + IR + Light |