Our partner Andover Corp.

Standard infrared bandpass filters

from Andover

Bandpass filters isolate specific regions of the spectrum, simultaneously providing high transmission of desired energy, and deep rejection of unwanted energy. Available in wide or narrow bandwidths, they can be tailored to suit your specific requirements.

Constructed of hard, durable first-surface dielectric coatings on optical-quality IR-transmitting substrates, these filters will withstand normal cleaning and handling associated with any high-quality optical component.

Features
  • Useful for isolating narrow spectral regions
  • Constructed of hard, durable first-surface coatings
  • Available in standard and custom wavelengths up to 14µm
  • Filters offered in 25mm dia, but custom sizes, shapes and optical characteristics available

Specification

General Specifications
Diameter Tolerance +0/-0.1 mm
Min. Clear Aperture 21 mm Dia.
Transmission (Typ.) 60-80%
Blocking T < 0.1% Average to 30 µm
24-hour Humidity per MIL-C-48497A
Moderate Abrasion per MIL-C-48497A
Adhesion per MIL-C-48497A
Optional Mounted in threaded ring - contact our expert on the right for thread sizes

 Standard IR gas analysis bandpass filters

Gas Center W/L Bandwidth Part Number
Water Vapor 2.70 ± 0.03 µm
2.95 ± 0.03 µm
120 ± 30 nm
130 ± 30 nm
2.70GA05-25
2.95GA05-25
Methane and Ethanol 3.46 ± 0.04 µm 140 ± 30 nm 3.46GA05-25
Formaldehyde 3.60 ± 0.04 µm 140 ± 30 nm 3.60GA05-25
CO2 4.26 ± 0.04 µm 120 ± 30 nm 4.26GA05-25
CO 4.67 ± 0.05 µm 150 ± 30 nm 4.70GA05-25
NO 5.30 ± 0.05 µm 420 ± 50 nm 5.30GA05-25
SWIR 4.00 ± 0.20 µm 2000 ± 200 nm 4.00GA20-25
FIR Broadband 10.0 ± 0.20 µm 4000 ± 200 nm 10.00GA40-25
CO2 10.6 ± 0.10 µm 420 ± 100 nm 10.60GA15-25

Custom IR Bandpass Filters

 Andover can design and fabricate custom bandpass filters to suit your particular requirements. Every phase of the process is performed in-house, including thin-film coating design, mechanical design, substrate fabrication and polishing, coating, inspection and environmental testing.

We can coat a variety of substrate materials, including Germanium, Sapphire, Silicon, Calcium Fluoride, Zinc, Sulfide and Zinc Selenide. Contact our expert on the right for a quotation, whether it is for prototype quantities or production quantities.

Custom IR Bandpass Filter Specifications

Custom spectral and physical properties available upon request

Bandwidth
(% of CW/L)
W/L Range Transmission
(Typ.)
Blocking Part Numbers
>10% 2.4 µm - 5.0 µm
5.1 µm - 6.5 µm
6.6 µm - 8.5 µm
8.6 µm - 10.3 µm
10.4 µm - 14.0 µm
70-80%
70-80%
60-70%
60-70%
50-60%
0.3 to 40 µm
0.3 to 15 µm
0.3 to 15 µm
0.3 to 15 µm
0.3 to 15 µm
IRFC10-25
IRFC12-25
IRFC14-25
IRFC16-25
IRFC18-25
1.5-10% 2.4 µm - 5.0 µm
5.1 µm - 6.5 µm
6.6 µm - 8.5 µm
8.6 µm - 10.3 µm
10.4 µm - 14.0 µm

70-80%
70-80%
60-70%
60-70%
50-60%

0.3 to 40 µm
0.3 to 15 µm
0.3 to 15 µm
0.3 to 15 µm
0.3 to 15 µm
IRFC20-25
IRFC22-25
IRFC24-25
IRFC26-25
IRFC28-25

Applications

Environmental monitoring
Security systems
FLIR systems
Avionics

Contact

Martin Klecka
Martin Klecka
Ales Jandik
Ales Jandik

Contact

Quantum Design

Krivoklatska 37
199 00 Praha 9
Czech Republic

Phone:+420 607 014 278
E-mail:czechia@qd-europe.com
Martin KleckaSales Manager
+420 607 014278
klecka@qd-europe.com

Ales JandikSales Manager
+420 607 014292
jandik@qd-europe.com