ZAB30
中性暗色玻璃
photography
general-optics
2mm
光谱透过率曲线
曲线依据原厂样本手工描点还原，仅供选型参考，最终以实测报告为准。
技术要求
| 厚度 | 2mm |
| 平均透过率(标准) | 30% |
| 公差范围 | 23.0~37.0% |
| Qz | ≤10.0% |
国内外牌号对照
五机部
AB2
苏联(原)
HC2
物理特性
| 折射率 Nd | 1.523 |
| 线膨胀系数 α | 65×10⁻⁷/°C |
| 转变温度 Tg | 469°C |
| 软化温度 Ts | 582°C |
| 密度 S | 2.52 |
| 耐酸性 DA | 1 |
| 耐水性 DW | 3 |
气泡 C-B
条纹 4
应力 3
Tested over 440-660nm per the catalogue's introductory note (one of three grades — ZAB5, ZAB30, ZAB65 — measured on a narrower band than the standard 400-700nm range). Re-digitized against the clean sequential-page scan; curve reads genuinely ~0% from 200-290nm (UV cutoff) rising to ~50% at the 2500nm right edge.