Tower customfilters cover applications
for biomedical bandpass, narrow
bandpass, broad banpass or long pass.
Using ion-beam sputtering together
with volume manufacturingmethods,
Tower is able to offer cost-effective
solutions.
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561-740-2525 • Fax 561-740-2518
sales@TowerOptical.com • www.TowerOptical.com
Cage Code: 1N2U3 SDVO-SB ITAR Compliant
Optical Filters and Coatings
Custom Filters
Coatings
• Highpower laser coatings:
anti-reflection, reflective,
partial reflectors, beamsplitters and polarizers
• Metallic coatings
Aluminum – UV and protected
Silver – protected
Reflectance >98% 800 nm to IR
Gold – protected and unprotected
• Broadband dichroic beamsplitter coatings
• Polarizing beamsplitter coatings
• Multi-wavelength and extended coatings
• Anti-reflective coatings from UV to IR
• Dielectric high reflective coatings high power
• Filters short pass, long pass and bandpass filters
The above coatings are available for wavelengths ranging from UV, VIS,
and near IR, including laser wavelengths from 193 nm to 3 microns.
Custom and specialized coatings available upon request.
IBS Ion beam sputttered thin films for the most complex optical image.
We can provide computer design of optical systems and thin film coatings.
Biomedical Filters
From: 340 nm to 766 nm
Size: as required
CWL tolerance: ±2 nm
FWHM: 8-10 nm, typical
FWHM tolerance: ±1 nm
Transmission: >50%
Blocking: 300 nm – 1200 nm
Rejection: OD=4, 0.01% or 10-4
Narrow Bandpass
From: 340 nm to 1570 nm
Size: as required
CWL tolerance: 0.4 nm – 2 nm
FWHM: 2 nm – 50 nm
Transmission: >90%
Blocking: 300 nm – 1200 nm
300 nm – 1800 nm
Rejection: OD>4, OD>6
Broad Bandpass
From: 340 nm to 1570 nm
Size: as required
CWL tolerance: >10 nm
FWHM: >50 nm
Transmission: >70%*
Blocking: 300 nm – 1200 nm
300 nm – 1800 nm
Rejection: OD>3, OD>4
* Specify desired level