這些尖銳邊緣濾光片通常被稱為長波通（LWP）和短波通（SWP）濾光片，其特征在于它們在反射和透射區(qū)域之間的高轉(zhuǎn)換率。如此高的轉(zhuǎn)換率使其成為熒光應用中的發(fā)射濾光片以及光度法中的排序濾光片的xxx選擇。它們還可以用作雜散光或微調(diào)濾光片，以消除任何不需要的近帶輻射。所有Andover LWP / SWP濾光片均由堅硬，耐用的D一表面介電涂層構(gòu)成，可承受與任何高質(zhì)量光學組件相關的常規(guī)清潔和處理。它們的膜結(jié)構(gòu)本質(zhì)上是經(jīng)過修改的四分之一波長疊堆，利用干涉效應而不是吸收來隔離其光譜帶。與濾鏡不同 由于對波長隨角度的變化不敏感，這些濾光器的波長隨入射角的增加而變短。此功能在可能需要微調(diào)50％截止波長或截止波長的應用中很有用。所有標準邊緣濾光片都可以從400nm到1000nm以50nm的增量遞增。
General Specifications
| Thickness: | 4.0mm maximum |
| Size Tolerance: | +0.0mm/-0.5mm |
| Min. Clear Aperture: | 85% of outside dimension |
| Substrate Material: | Glass (Note: BK-7 or Borofloat available as an option for higher Tx.) |
| Flatness: | 3-5 waves per 25 TWF |
| Surface Quality: | 80-50 per MIL-C-48497A |
| Humidity and Abrasion: | Per MIL-C-675A |
| Operating Temperature: | -50°C to +200°C |
| Cut-on Slope: | 6% maximum (11% for 300nm filter) |
| Cut-on Tolerance: | ±10nm from 400nm-1100nm ±5nm from 300nm - 375nm |
| Mechanical: | Unmounted |
Transmission
| Long Wave Pass: | 85% average from the 50% cut-on point to 2000nm |
| Short Wave Pass: | 400-450nm: 85% avererage from the 50% cut-on point to 0.75 x the 50% cut-off point 500-1000nm: 85% avererage from the 50% cut-on point to 0.75 x the 50% cut-off pointNote: with the exception of the 400nm filter, all SWP filters will drop off in transmission at wavelengths under 400nm.) |
Rejection
| Long Wave Pass: | 99% or greater from 0.9 x the 50% point to the UV |
| Short Wave Pass: | 99% or greater from 1.07 x the 50% point to 1.25 x the 50% point |
| Effective index of refraction (n*) | 1.7 (approximately) |
| DESCRIPTION | PART NO. |
| 100.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 100FL07-12.5 |
| 400.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 400FL07-12.5 |
| 400.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 400FL07-25 |
| 400.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 400FL07-50 |
| 400.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 400FL07-50S |
| 450.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 450FL07-12.5 |
| 450.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 450FL07-25 |
| 450.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 450FL07-50 |
| 450.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 450FL07-50S |
| 500.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 500FL07-12.5 |
| 500.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 500FL07-25 |
| 500.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 500FL07-50 |
| 500.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 500FL07-50S |
| 550.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 550FL07-12.5 |
| 550nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 550FL07-25 |
| 550.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 550FL07-50 |
| 550.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 550FL07-50S |
| 600.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 600FL07-12.5 |
| 600.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 600FL07-25 |
| 600.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 600FL07-50 |
| 600.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 600FL07-50S |
| 650.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 650FL07-12.5 |
| 650.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 650FL07-25 |
| 650.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 650FL07-50 |
| 650.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 650FL07-50S |
| 700.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 700FL07-12.5 |
| 700.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 700FL07-25 |
| 700.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 700FL07-50 |
| 700.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 700FL07-50S |
| 750.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 750FL07-12.5 |
| 750.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 750FL07-25 |
| 750.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 750FL07-50 |
| 750.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 750FL07-50S |
| 800.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 800FL07-12.5 |
| 800.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 800FL07-25 |
| 800.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 800FL07-50 |
| 800.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 800FL07-50S |
| 850.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 850FL07-12.5 |
| 850.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 850FL07-25 |
| 850.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 850FL07-50 |
| 850.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 850FL07-50S |
| 900.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 900FL07-12.5 |
| 900.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 900FL07-25 |
| 900.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 900FL07-50 |
| 900.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 900FL07-50S |
| 950.0nm Cut-off, 12.5 mm dia., unmounted, Short Wave Pass Edge Filter | 950FL07-12.5 |
| 950.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 950FL07-25 |
| 950.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 950FL07-50 |
| 950.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 950FL07-50S |
| 1000.0nm Cut-off, 25.0 mm dia., unmounted, Short Wave Pass Edge Filter | 100FL07-25 |
| 1000.0nm Cut-off, 50.0 mm dia., unmounted, Short Wave Pass Edge Filter | 100FL07-50 |
| 1000.0nm Cut-off, 50.0 x 50.0 mm sq., unmounted, Short Wave Pass Edge Filter | 100FL07-50S |
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