HIGH TRANSMITTING BANDPASS FILTERS
Andover offers a high-transmittance variant of its standard bandpass filter selection. By tailoring the blocking range to match the detector, we can provide the maximum possible throughput while maintaining good blocking to meet the customer’s needs. Wavelengths include all popular laser, mercury biomedical, and analytical spectral lines.
All filters are constructed using the same high-quality materials and methods as our standard bandpass filters, thus providing a highly stable, long-lasting filter.
These bandpass filters are designed for use in situations where far-infrared blocking is not required. They feature high transmission in the passband region and good blocking over a limited range. Theoretical transmission curves are available on request.
For even higher performance, please see our extensive selection of hard-coated bandpass filters.
- Wavelengths from the ultraviolet through the infrared
- Stabilized to prevent drift of peak wavelength over time
- Hermetically sealed and protected by an anodized aluminum ring
- Transmission as high as 80%
- Spectral radiometry
- Medical diagnostics
- Chemical analysis
- Colorimetry
General Specifications for High-Transmitting Bandpass Filters
Diameter Tolerance: | +0/-0.25nm | |
Usable Aperture: | Filter Size | Usable Aperture |
12.5nm Ø | 9.0nm Ø | |
25.0nm Ø | 21.0nm Ø | |
50.0nm Ø | 45.0nm Ø | |
Surface Quality: | 80-50 (Per MIL-PRF-13830B) | |
Optical Quality: | Commercial instrumentation grade | |
Out-of-Band Blocking: | 1 x 10-4 avg. from X-ray to specified range | |
Specification Temperature: | +23C | |
Max. Survival Temp Range: | -50C to +70C | |
Humidity Resistance: | Per MIL-C-48497A | |
Mechanical: | Mounted in an anodized aluminum ring |