Applications- Emission Filters in Fluorescence Applications
- Order Sorting Filters for Photometry
- Stray Light or Trim Filters to Eliminate any Unwanted Near Band Radiation
- Raman Spectroscopy Filters
- Astronomy Applications
Thorlabs' Edgepass Filter Kits each contain 10 mounted longpass or shortpass filters for isolating regions of the Visible or IR spectrum. Each filter is mounted in a Ø1" black anodized aluminum ring that can be placed in a variety of lens tubes and optical mounts. The filters are packaged in a metal storage box. Detailed specifications can be found in the table below. Our edgepass filters are constructed of durable dielectric coatings and will withstand the normal cleaning and handling associated with any high-quality optical component. Their film construction is essentially a modified quarter-wave stack, using interference effects, rather than absorption, to isolate their spectral bands. Thus, unlike colored filter glass, the cut-off/cut-on wavelength will be shifted to shorter wavelengths with an increase in the angle of incidence. This feature can be useful in applications where it is desirable to fine tune the location of the cut-on or cut-off wavelength. Our edgepass filters are hermetically sealed for maximum humidity protection and may be combined for custom bandpass filters. Transmission curves are available in the Support Documents for each filter. | Specifications | Longpass Filters | Shortpass Filters |
|---|
| Transmission Region | - | ~400 nm to Cut-off | | Transmission at Peak | 80% (400 - 700 nm)
75% (750 - 1000 nm)
70% (>1000 nm) | 70% (<500 nm)
70% (500 - 540 nm)
80% (550 - 1000 nm)
| Cut-On or Cut-Off Tolerance
(Δλ@ 50% of Peak) | ±3 nm to 750 nm
±15 nm to 1000 nm | ±3 nm to 750 nm
±15 nm to 1000 nm | | Rejection Region | 0.01% abs., 0.01% 200 nm to Cut On | 0.01% abs., 0.0001% avg. (1.3 times Cut-Off) | | Cut-Off Slope | 3% OD = 0.3 to OD = 4 | 4-5%, OD = 0.3 to OD = 4 | | Construction | Immersed Dielectric | | Scratch/Dig | 80/50 per Mil-0-13830A | | Substrate Material | Soda Lime or Equivalent |
To request a quote for custom edgepass filters, please e-mail Tech Support or call us at 973-579-7227.
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Edgepass Filter Kits
