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Infrared Filters are long-pass filters that block the visible light and pass IR light. They are characterized by their cut-on wavelength, typically the wavelength at which the transmission is 50% of the maximum. These filters use absorptive glasses, that are robust, cost-effective and insensitive to angle of incidence.

In machine vision, one of their typical applications, they are used in front of a lens on a CCD or CMOS camera when the image is to be taken at wavelength in the near infrared. These filters are available unmounted or in mounts with all common thread sizes.
 
Key Features

Insensitive to angle of incidence

Available in mounts with all common thread sizes

Absence of vignetting due to large clear aperture

Applications

Machine Vision and other imaging applications

Night Vision

Scientific & research measurement in the NIR
 
Technical Specifications 1) 
 
Filter Type 092 098 093
Cut-on wavelenth 695 ± 10 nm 775 ± 10 nm 825 ± 10 nm
Surface 5/2 x 0.16 2) 5/2 x 0.16 2) 5/2 x 0.16 2)
Wavefront distortion 3) 1 λ 1 λ 1 λ
Parallelism 1 arc minute 1 arc minute 1 arc minute
Diameter tolerance + 0 - 0.3 mm + 0 - 0.3 mm + 0 - 0.3 mm
Thickness 2.0 ± 0.2 mm 2.0 ± 0.2 mm 2.0 ± 0.2 mm

1) Specifications for unmounted and uncoated versions
2) Surface specification according to ISO 10110, quality usually similar to
MIL 80-50 scratch-dig or better
3) Per 30 mm at 633 nm

 

 

 

 

 

 
Print version
(pdf: 170 kB)  

... entire catalog
    Order Instructions Ix - Type - Coating - Mount - Size
 
 

   
IF mounted filter
IFG unmounted filter
Type 092, 098, 093
Coating no coating
Mount SN 1 for standard threaded mount (IF only)
Size for IF: thread of the mount
for IFG: diameter in mm
       

  Call us for
  OEM versions

 Example:

IFG - 093 - 30
(unmounted 093 filter with no coating, 30 mm diameter)

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