Filters: narrow bandpass0 pages
Narrow Bandpass Filters
Information Sheet
Application
IR narrow bandpass filters are designed to isolate a narrow region of the infrared spectrum between 0.85um
and 10um, and are used in a variety of application such as gas detection.
Substrate
Glass, Sapphire, Silicon, Germanium
Depending upon the waveband of interest.
Transmission
Typically >70%
Attenuation
Typically <0.1% outside the passband.
Bandwidths
May be specified from 1% to 10% of centre wavelength
Environmental
Adhesion
Abrasion
Humidity
MIL-C-48497A, 08/09/1980, para 4.5.3.1
MIL-C-48497A, 08/09/1980, para 4.5.3.3
MIL-C-48497A, 08/09/1980, para 4.5.3.2
Tape test
Moderate, 50 strokes with a cheesecloth
o
24hrs, 48 , 95% relative humidity
Typical Transmission Profile
Transmission (%)
100
80
60
40
20
0
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Wavelength (um)
Umicore Coating Services
Kinnoull Street
Dundee, DD2 3ED
Tel: +44 1382 833022
Fax: +44 1382 833824
E-mail: coatingservices@umicore.com
UCS reserves the right to amend or withdraw specifications without prior notice
Vat No: 503 0068 05
Registration No: 118425
Issue No. 01-11