紫外滤光片采用磁控溅射金属镀膜，可在单基底上实现高透过率和高截止深度 (OD4+, visible - IR)。膜层具有极高的致密度，对各种环境因素耐受性强，各项光谱指标不受温度和湿度的影响。在热测试实验中，滤光片在 300℃放置两小时后，没有检测到任何损伤和光谱指标衰减。先进的质量控制和管理方法保证所有出厂的滤光片都满足 ISO，NIST，MIL 等各项标准。
滤光片组 | 中心波长 | 带宽 | 透过率 | 截止深度 |
ET206/10BP | 206 nm | 10 nm | Tpeak >/= 13% | OD3-6 @ 236 - 1000 nm |
ET214/20BP | 214 nm | 20 nm | Tpeak >/= 25% | OD3-6 @ 200 - 1200 nm |
ET220/10BP | 220 nm | 10 nm | Tpeak >/= 22% | OD4-6 @ 200 - 1200 nm |
ET235/10BP | 235 nm | 10 nm | Tpeak >/= 25% | OD4-6 @ 190 - 1200 nm |
ET240/10BP | 240 nm | 10 nm | Tpeak >/= 25% | OD4-6 @ 190 - 1200 nm |
ET250/20BP | 250 nm | 20 nm | Tpeak >/= 30% | OD4-6 @ 200 - 1200 nm |
ET254/10BP | 254 nm | 10 nm | Tpeak >/= 30% | OD4-6 @ 200 - 1200 nm |
ET260/10BP | 260 nm | 10 nm | Tpeak >/= 30% | OD4-6 @ 200 - 1200 nm |
ET270/15BP | 270 nm | 15 nm | Tpeak >/= 32% | OD4-6 @ 200 - 1200 nm |
ET280/10BP | 280 nm | 10 nm | Tpeak >/= 25% | OD4-6 @ 200 - 1200 nm |
ET292/10BP | 292 nm | 10 nm | Tpeak >/= 30% | OD4-6 @ 190 - 1200 nm |
ET300/10BP | 300 nm | 10 nm | Tpeak >/= 35% | OD4-6 @ 200 - 1200 nm |
ET313/25BP | 313 nm | 25 nm | Tpeak >/= 35% | OD4-6 @ 200 - 1200 nm |
ET325/20BP | 325 nm | 20 nm | Tpeak >/= 35% | OD4-6 @ 200 - 1200 nm |
ET334/10BP | 334 nm | 10 nm | Tpeak >/= 35% | OD4-6 @ 200 - 1200 nm |
ET337/10BP | 337 nm | 10 nm | Tpeak >/= 40% | OD4-6 @ 200 - 1200 nm |
ET340/10BP | 340 nm | 10 nm | Tpeak >/= 35% | OD4-6 @ 200 - 1500 nm |
ET345/10BP | 345 nm | 10 nm | Tpeak >/= 35% | OD4-6 @ 200 - 1500 nm |
ET350/10BP | 206 nm | 10 nm | Tpeak >/= 35% | OD4-6 @ 200 - 1500 nm |
ET365/10BP | 206 nm | 10 nm | Tpeak >/= 40% | OD4-6 @ 200 - 1200 nm |
ET375/10BP | 206 nm | 10 nm | Tpeak >/= 40% | OD4-6 @ 200 - 1200 nm |
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