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HEAT REFLECTION FILTERS
The heat reflecting filters are coated on both sides for filter applications in the near infrared range. In conjunction with the glass Borofloat ®, it is suitable for applications with ambient temperatures of up to 450°C. Apart from the high temperature resistance, these are characterized by a high light transmittance. The IR4 filter has additionally an enhanced UV transmission.
| Types of filters | Spectral range | reflecion |
|---|---|---|
| IR2 | 870 - 950 nm | R ≥ 80% |
| IR3 | 850 - 900 nm | R ≥ 90% |
| IR4 | 800 - 850 nm | R ≥ 70% |
| IR5 | 850 - 900 nm | R ≥ 94% |
| IR6 | 1000-1100nm | R ≥ 85% |
| IR7 | 850 - 900 nm | R ≥ 96% |
| Stability of the coating | |
|---|---|
| Solubility, resistant to | water, weak alkaline solutions, alcohol and |
| alcoholic solvents, glass cleaner | |
| Temperature stability | short-term up to 450 ° |
| Abrasion resistance | according to DIN ISO 9211-3; severity level 1 / Crockmeter |
| Adhesive stability | according to DIN ISO 9211-3; severity level 3 / Scotch tape test |
| Moisture resistance | according to DIN ISO 9211-3; 40°C 90%-95% rel. dampness, 10 days |
| Coating defects | |
|---|---|
| 5/ C 5St x 1,0 (5/ CN' x A') | according to DIN ISO 10 110, part 7 |
| referring to a surface of 100mm x 100mm | C Indicator for surface errors |
| flaws < 0,2mm are ignored | N´ the number of allowable coating defects |
| A´ the grade number |
| Scratches | |
|---|---|
| 5/ L 3St x 0,15mm (5/ LN´´x A´´) | according to DIN ISO 10 110, part 7 |
| referring to a surface of 100mm x 100mm | L Indicator for scratches |
| defects < 0,05mm are ignored | N´´the number of allowable scratches |
| A´´ the maximum tolerable width of the scratches in mm |