Narrow Band Pass Filter

Infrared Band pass Filter

Infrared Filter

Gas Analysis Filter

Infrared Narrow Band Filters are designed for the detection and measurement of atmospheric gases. Many gases show a specific absorption line in the mid to far infrared range. With a filter which allows the monitoring of this specific gas absorption, the measurement of gas concentration is possible.

Application

Infrared absorption (NDIR) gas sensing, Environment management system

Property

Technology is based on infrared (IR) absorption of radiation called the NDIR(Non – Dispersive Infrared) technique. By detecting the amount of light absorbed, within just a narrow band width that coincides with the resonance wavelength of the specie selected, one gets a measure of the number of molecules, free from interference of other species.

General Specification

Substrate : Silicon.

(Germanium Wafer, Sapphire Wafer, etc.)

Dia.100.00mm+0.30/-0.30mm
Thickness: 0.525mm+/-0.025mm

Durability test method
- Humidity : MIL-C-48497A 4.5.3.2.
- Moderate : MIL-C-48497A 4.5.3.3.
- Adhesion : MIL-C-48497A 4.5.3.1.

Blocking specification can be design by customer

Ordering Information

Model No	CWL(um)	Transmittanc	Bandwidth(nm)	Blocking(um)
NBPF - 3.09 - 160	3.09	70%	160	1.50 ~ 8.00
NBPF - 3.30 - 160	3.30	70%	160	1.50 ~ 8.00
NBPF - 3.33 - 160	3.33	70%	160	1.50 ~ 8.00
NBPF - 3.35 - 190	3.35	70%	190	1.50 ~ 8.00
NBPF - 3.95 - 90	3.95	76%	90	1.50 ~ 8.00
NBPF - 4.24 - 90	4.24	70%	90	1.50 ~ 8.00
NBPF - 4.26 - 90	4.26	76%	90	1.50 ~ 8.00
NBPF - 4.26 - 180	4.26	76%	180	1.50 ~ 8.00
NBPF - 4.33 - 160	4.33	73%	160	1.50 ~ 8.00
NBPF - 4.40 - 700	4.40	80%	700	1.50 ~ 8.00
NBPF - 4.43 - 60	4.43	70%	60	1.50 ~ 8.00
NBPF - 5.48 - 850	5.48	76%	850	1.50 ~ 10.00
NBPF - 7.30 - 180	7.30	70%	180	1.50 ~ 10.00
NBPF - 10.27 - 210	10.27	65%	210	1.50 ~ 14.00
NBPF - 11.30 - 200	11.30	70%	200	1.50 ~ 14.00
NBPF - 12.40 - 180	12.40	65%	180	1.50 ~ 14.00