A UV cut-off glass filter is an optical material specifically designed to block ultraviolet (UV) lig...
Infrared-transmitting absorbing glass is an optical material used to absorb infrared light while transmitting visible light. It effectively filters out light in the infrared wavelength range, preventing it from entering optical systems or environments, while allowing visible light to pass through. This enables various functions such as temperature control, spectral filtering, and energy management. Due to its unique optical properties, infrared-transmitting absorbing glass is widely used in several industries.
1. Features
| Number | Thickness(mm) | A[2856k] | D65 | Chemical stability | ND | α×10-7 (℃) |
Tg(℃) | TS(℃) | S | |||||
| x | y | Y | x | y | Y | DA | DW | |||||||
| HWB760 | 3 | 5 | 4 | 1.532 | 111 | 534 | 592 | 2.77 | ||||||
| HWB780 | 3 | 5 | 4 | 1.532 | 111 | 534 | 592 | 2.77 | ||||||
| HWB800 | 3 | 5 | 4 | 1.52 | 98 | 559 | 615 | 3.05 | ||||||
| HWB830 | 3 | 5 | 4 | 1.52 | 98 | 559 | 615 | 3.05 | ||||||
| HWB850 | 3 | 5 | 4 | 1.52 | 98 | 559 | 615 | 3.05 | ||||||
| HWB900 | 6 | 3 | 3 | 2.57 | ||||||||||
| HWB930 | 6 | 3 | 3 | 2.57 | ||||||||||
2. Technical requirements
| Number | Thickness(mm) | Atj(nm) | A0(nm) | TAO(%) | K |
| HWB760 | 3 | 760±10 | 850 | ≥83.6 | ≥0.6 |
| HWB780 | 3 | 780±10 | 900 | ≥83.6 | ≥0.5 |
| HWB800 | 3 | 800±10 | 900 | ≥83.6 | ≥0.5 |
| HWB830 | 3 | 830±10 | 930 | ≥83.6 | ≥0.5 |
| HWB850 | 3 | 850±10 | 950 | ≥80 | ≥0.5 |
| HWB900 | 6 | 930±15 | 1050 | ≥80 | ≥0.2 |
| HWB930 | 6 | 930±15 | 1050 | ≥80 | ≥0.2 |
3. Bubble, fringe and stress levels
| Number | Bubble | Stripes | Stress |
| HWB760 | C-B | 3C | 3 |
| HVB780 | C-B | 3C | 3 |
| HWB800 | C-B | 3C | 3 |
| HWB830 | C-B | 3C | 3 |
| HWB850 | C-B | 4 | 3 |
| HWB900 | C | 3C | 3 |
| HWB930 | C | 3C | 3 |
4. The spectra

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