Infrared Optical Interference Filters

Short Wave Pass Filters

Short wave pass filters are distinguished by a sharp transition from a zone of transmission to a zone of rejection. The rejection region typically extends to the far infrared but can be limited for filters with edge positions below 2um.

When ordering it is necessary to specify the 5% or 50% cut off edge position (the 5% point is measured as an absolute value but the 50% point is measured as 50% of peak transmittance).

Typical Performance

Short Wave Pass Curve
Click the image to download the pdf

 

Typical Characteristics

Available wavelength range (edge position) ~1 to 20 um
Edge tolerance  
To customers requirements, from +/-1% but standard tolerance +/-4%
Average transmittance  Typically >75% (depending on wavelength)
Cut on slope   Typically < 5%
Blocking (attenuation) Typically <0.1% to 0.3 micron.

 

 

ELECTRO OPTICAL COMPONENTS, Inc.

NOC & Wavelength Technology offer a wide variety of interference
infrared filters, distributed  in North America exclusively
by ELECTRO OPTICAL COMPONENTS, Inc.