Edge filters separate a broad spectrum of light into two components: a transmitted component and a rejected component. Unlike dichroic filters, edge filters may provide rejection through a combination of absorption and reflection and are not specifically designed to provide a useful reflection band. We make catalog and custom long & short pass edge filters over the range of 200 nm to 16 µm.
Colored-Glass Alternative Filters
Newport's Colored-Glass Alternative Filters have been developed for applications where colored-glass filters have been commonly used. These filters are RoHS compliant without relying on the 4-year exemption issued for some colored-glass filters. The filters are manufactured using all-dielectric thin-film designs featuring Newport's patented Stabilife® coating technology, which produces highly dense, virtually indestructible films. The resulting filters exhibit lower autofluorescence and have higher resistance to harsh environmental conditions than many colored-glass filters.
Selecting an Edge Filter
Click Edge Filters to shop or browse all of our standard models, or select a product series below for more information on our products and capabilities.
| Series |
Features |
 |
Short and Long-Wave Pass Filters |
• Steep transition slope
• High rejection/transmission
• Excellent temperature stability
• Cut-on/Cut-off wavelengths available from 400 nm to 1000 nm
• Blocked to X-ray (LWP) and 1200 nm (SWP) |
 |
Colored-Glass Alternative Filters |
• RoHS compliant (unconditional)
• Steep transitions from blocking to transmission
• Low autofluorescence
• High transmission - >90% average (typical)
• Excellent blocking - >5 OD
• Patented Stabilife® coatings
• Wavelength stability in any environment
• 34 Standard cut-on wavelengths in 4 standard sizes
• Custom cut-on wavelength availability from 225 to 1000 nm |
 |
Order Sorting Filters |
• Block unwanted higher orders
• High transmittance over scanning range; high rejection in blocked region |
Colored-Glass Alternative Filter Capabilities/Specifications
| RoHS Status |
Fully compliant (without 4-year exemption granted to non-compliant colored-glass filters) |
| Passband Transmittance |
≥90% average (typical) |
| Cut-on Wavelength Availability |
300 - 1000 nm |
| Spectral Blocking |
≥ 5 OD |
| Spectral Temperature Sensitivity |
<0.0015 nm/°C |
| Surface Quality |
F/F (80/50) per MIL-F-48616 (typical) |
| Coating Hardness |
MIL-C-48497 |
| Coating Abrasion Resistance |
MIL-C-48497 |
| Coating Adhesion |
MIL-C-48497 |
| Coating Humidity Resistance |
MIL-STD-810, Method 507.3, Procedure III, Modified to 40 cycles |
| Coating Operating Temperature Range |
-100 º C to 400 º C |
| Chemical Resistance |
SR Class 1.0 per ISO 8424 |
| Filter Size Range |
1.0 mm sq. to 380 mm dia. |
| Filter Thickness |
1.1 mm (typical) |