Outline
Edge pass filters are use to isolate one band of wavelengths from another by either reflecting or transmitting one band while transmitting or reflecting the second band. In the case of Raman spectroscopy, edge pass filters are used to separate the excitation source wavelength from the emission wavelengths.
Feature
- Excellent cutoff
- High transmittance
- Deep blocking level
Application
- Raman measurement
- Laser excitation
- Fluorescence measurement
- Bio photonics
- Microscopy
Common specification
| Optical Specification | |
|---|---|
| Blocking Level [OD] | 6 |
| Transmittance (average) | 90% |
| Angle of Incidence | 0° |
| Physical Specification | |
|---|---|
| Outer Diameter | 12.5＋0.0/-0.1 mm or 25 ＋ 0.0/-0.2 mm |
| Clear Aperture | 8 mm ( Φ 12.5 mm filter) or 21 mm ( Φ 25 mm filter) |
| Filter thickness | 3.0 ± 0.1 mm |
| Ring mounted | Yes |
| Ring ｔhickness | 5.0 ± 0.1 mm |
| Surface Quality | 60scratch / 40dig |
| Reliability | |
|---|---|
| Environmental Testing | MIL-STD-810F |
| Mechanical Durability | MIL-C-48497A |
Difference of a cutoff between each filter model
| Model | Cutoff ( for each laser wavelength ) | 6OD～50%(@532nm) | |
|---|---|---|---|
| Edge long pass filter | Nano Edge | ＜0.2% | 1.1nm(38cm-1) |
| Ultra Steep | ＜0.5% | 1.7nm(60cm-1) | |
| Standard | ～1.25% | 2.3nm(80cm-1) | |
| Edge short pass filter | Ultra Steep | ＜0.5% | 2.0nm(70cm-1) |
Nano Edge long pass filter
| Laser wavelength (nm) | 6OD～50%(nm) | 6OD～50%(cm-1) | Pass band (nm) | Model：Φ12.5mm |
|---|---|---|---|---|
| 488 | 1.0 | 41 | 491～1200 | 488NanoEdge |
| 514.5 | 1.0 | 39 | 517～1200 | 514.5NanoEdge |
| 532 | 1.1 | 38 | 535～1200 | 532NanoEdge |
| 633 | 1.3 | 32 | 637～1200 | 633NanoEdge |
| 785 | 1.6 | 26 | 789～1200 | 785NanoEdge |
Ultra Steep long pass filter
| Laser wavelength (nm) | 6OD～50%(nm) | 6OD～50%(cm-1) | Pass band(nm) | Model：Φ12.5mm | Model：Φ25mm |
|---|---|---|---|---|---|
| 442 | 1.4 | 70 | 444.8～1200 | 442USLPF-12.5 | 442USLPF-25.0 |
| 457.9 | 1.4 | 60 | 459.9～1200 | 457USLPF-12.5 | 457USLPF-25.0 |
| 476.4 | 1.4 | 60 | 479.5～1200 | 476USLPF-12.5 | 476USLPF-25.0 |
| 488 | 1.4 | 60 | 491.1～1200 | 488USLPF-12.5 | 488USLPF-25.0 |
| 514.5 | 1.6 | 60 | 517.8～1200 | 514.5USLPF-12.5 | 514.5USLPF-25.0 |
| 532 | 1.7 | 60 | 535.4～1200 | 532USLPF-12.5 | 532USLPF-25.0 |
| 632.8 | 2.0 | 50 | 637.0～1200 | 632.8USLPF-12.5 | 632.8USLPF-25.0 |
| 638 | 2.4 | 50 | 642.0～1200 | 638USLPF-12.5 | ― |
| 650 | 2.1 | 50 | 654.1～1200 | 650USLPF-12.5 | 650USLPF-25.0 |
| 660 | 2.1 | 50 | 664.2～1200 | ― | 660USLPF-25.0 |
| 676.6 | 2.3 | 50 | 680.3～1200 | 676USLPF-12.5 | 676USLPF-25.0 |
| 752.5 | 2.3 | 40 | 756.8～1200 | 752USLPF-12.5 | 752USLPF-25.0 |
| 785 | 2.5 | 40 | 790.0～1200 | 785USLPF-12.5 | 785USLPF-25.0 |
| 830 | 3.6 | 40 | 840.0～1200 | 830USLPF-12.5 | 830USLPF-25.0 |
| 1064 | 6.3 | 55 | 1071.0～1700 | 1064USLPF-12.5 | 1064USLPF-25.0 |
Standard long pass filter
| Laser wavelength (nm) | 6OD～50%(nm) | 6OD～50%(cm-1) | Pass band(nm) | Model：Φ12.5mm | Model：Φ25mm |
|---|---|---|---|---|---|
| 405 | 2 | 120 | 410.0～1200 | 405LPF-12.5 | 405LPF-25.0 |
| 442 | 1.9 | 100 | 447.3～1200 | 442LPF-12.5 | 442LPF-25.0 |
| 457.9 | 2 | 100 | 463.5～1200 | 457LPF-12.5 | 457LPF-25.0 |
| 476.4 | 2.1 | 90 | 481.7～1200 | 476LPF-12.5 | 476LPF-25.0 |
| 488 | 2.1 | 90 | 493.3～1200 | 488LPF-12.5 | 488LPF-25.0 |
| 514.5 | 2.2 | 80 | 520.2～1200 | 514.5LPF-12.5 | 514.5LPF-25.0 |
| 532 | 2.3 | 80 | 538.4～1200 | 532LPF-12.5 | 532LPF-25.0 |
| 632.8 | 2.7 | 70 | 640.4～1200 | 632.8LPF-12.5 | 632.8LPF-25.0 |
| 650 | 2.8 | 70 | 657.8～1200 | 650LPF-12.5 | 650LPF-25.0 |
| 676.6 | 2.9 | 60 | 684.1～1200 | 676LPF-12.5 | 676LPF-25.0 |
| 752.5 | 3.3 | 50 | 761.1～1200 | 752LPF-12.5 | 752LPF-25.0 |
| 785 | 3.4 | 50 | 794.5～1200 | 785LPF-12.5 | 785LPF-25.0 |
| 830 | 3.6 | 50 | 840.0～1200 | 830LPF-12.5 | 830LPF-25.0 |
Ultra Steep short pass filter
| Laser wavelength (nm) | 6OD～50%(nm) | 6OD～50%(cm-1) | Pass band(nm) | Model:Φ12.5mm | Model:Φ25mm |
|---|---|---|---|---|---|
| 488 | 1.7 | 70 | 350～485 | 488USSPF-12.5 | 488USSPF-25.0 |
| 514.5 | 1.9 | 70 | 350～512 | 514.5USSPF-12.5 | 514.5USSPF-25.0 |
| 532 | 2 | 70 | 350～529 | 532USSPF-12.5 | 532USSPF-25.0 |
| 632.8 | 2.4 | 60 | 380～629 | 632.8USSPF-12.5 | 632.8USSPF-25.0 |
| 785 | 3.1 | 50 | 470～779 | 785USSPF-12.5 | 785USSPF-25.0 |
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