Heat absorbing filters feature high transmittance in the visible region and good absorption of heat radiation (infrared). They efficiently absorb thermal radiation emitted from light sources and are highly effective when employed for slide projectors and illumination equipment.
To prevent a filter glass from being broken by rapid heating or cooling, this filter can be also provided as a thermal toughening tempered glass.
Applications: Medical, light sources
| Item | Transmittance Specification (%) | Colour specification (Standard illuminants A) | Thickness | Refractive Index | Chemical property | Thermal properties | Mechanical properties | Specific gravity | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| λTmax | Specific wavelength | Tav | x | y | mm | 600 nm | DW | DA | Tg | Ts | α -30/70 | α 100/300 | HK | FA | d | ||
| HA5 | – | T750<6 | T1000<1 | 63±5 | 0.424 | 0.419 | 3.00 | 1.525 | 1 | – | 595 | – | – | 64 | 517 | – | 2.63 |
| HA15 | 380±5 | T750<15 | – | 70±5 | 0.431 | 0.414 | 3.00 | 1.524 | 1 | – | 597 | – | – | 65 | 502 | – | 2.64 |
| HA30 | – | T750<35 | T1000<1 | 80±5 | 0.438 | 0.412 | 3.00 | 1.519 | 1 | – | 565 | 620 | – | 66 | – | – | 2.61 |
| HA50 | – | T750<55 | T1000<3 | 80±5 | 0.440 | 0.411 | 3.0 | 1.515 | 1 | – | 560 | 615 | – | 66 | – | – | 2.60 |
The listed data are standard values. As we are always improving our products, the data listed are subject to change without notice.