A UV cut-off glass filter is an optical material specifically designed to block ultraviolet (UV) lig...
UV-visible absorption glass is a type of optical glass specifically designed to absorb light at specific wavelengths within the ultraviolet (UV) and visible (VIS) light ranges. This glass effectively blocks ultraviolet light and some visible light while allowing certain specific wavelengths of light to pass through, thereby protecting optical equipment, the human body, and other sensitive materials from excessive radiation. UV-visible absorption glass is widely used in various applications requiring spectral filtering, protection, and energy management, such as solar energy devices, optical instruments, electronic products, and medical equipment.
1. Properties
| Number | Thickness(mm) | A[2856k] | D65 | Chemical stability | ND | α×10-7(/℃) | Tg(℃) | Ts(℃) | S | |||||
| x | y | Y | x | y | Y | DA | DW | |||||||
| ZWB1 | 1 | 0.734 | 0.266 | 0.1 | 0.726 | 0.262 | 0 | 4 | 4 | 1.557 | 94 | 529 | 588 | 2.87 |
| ZWB2 | 1 | 0.532 | 0.171 | 0.9 | 0.231 | 0.032 | 0.4 | 2 | 2 | 1.52 | 97 | 515 | 589 | 2.65 |
| ZWB3 | 2 | 0.711 | 0.256 | 0.3 | 0.538 | 0.176 | 0.1 | 2 | 3 | 1.526 | 85 | 527 | 616 | 2.63 |
2. Technical Requirements
| Number | Thickness(mm) | 254(nm) | 280(nm) | 313(nm) | 334(nm) | 365(nm) | 405(nm) | 700(nm) |
| ZWB1 | 1 | ≥50.0 | ≥81.0 | ≤1.0 | ≤30.0 | |||
| ZWB2 | 1 | ≥38.0 | ≥80.0 | ≤8.0 | ≤14.0 | |||
| ZWB3 | 2 | 34 | ≥86.0 | ≤28.8 | ≤64.6 |
3. Bubble, Streak, and Stress-Related Grades
| Number | Bubble | Stripes | Stress |
| ZWB1 | C | 4 | 4 |
| ZWB2 | C | 4 | 3 |
| ZWB3 | C | 4 | 4 |
4. Spectrogram

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