SPECIAL INTERFERENCE

 

INTERFERENCE FILTERS

 

FILTER CODE

SPECTRAL REGION for CWL: λ0,nm

TOLERANCE** ON  lî, nm

dl0,5/lî, % 

Òmax, %

Τff,%

BLOCKING REGION, nm

Design

UEF 1.2328 

200-280

± 2

                  ± 10

 2,0-3,5

3,5-10

>30

£0,2

up to  400

Enclosed

UEF2.2840 

280-400

± 2

                  ± 10

2,0-3,5

3,5-10

³50

£0,2

up to 400

Enclosed

UEF3.3340

 

330-400

± 2

                  ± 10

 2,0-3,5

3,5-10

³50

£0,2

up to  1000

“-“

UEF1.2328 

230-280

± 2

                  ± 10

2,0-3,5

3,5-10

>35

£0,2

up to  400

Exposed

UEF2.2840 

280-400

±2

                  ± 10

 2,0-3,5

3,5-10

>55

£0,2

up to  400

Exposed

UEF 3.3340 

330-400

± 2

                  ± 10

 2,0-3,5

3,5-10

>55

£0,2

up to 1000

“-“

VEF 1.4080 

400-800

± 2

                  ± 10

 2,0-3,5

3,5-10

³50

£0,2

up to  800

Enclosed

VEF 2.4080 

400-800

± 2

                  ± 10

 2,0-3,5

3,5-10

³60

£0,2

up to  800

Exposed

EEF 1.80110 

  800-1100

± 10

                 ± 30

 1,8-3,5

3,5-10

³40

£0,2

 

up to  1200

 

Enclosed

EEF 1.110170 

1100-1700

± 20

± 50

1,8-3,5

3,5-10

>40

£0,2

up to 3000

Enclosed

EEF 1.170210 

1700-2100

± 20

                  ± 50

1,8-3,5

3,5-10

³45

£0,2

up to  3000

 

“-“

EEF 1.210380 

2100-3800

± 30

                  ± 50

1,8-3,5

3,5-10

³50

£0,2

up to 8000

“-“

EEF 1.380430 

3800-4300

± 30

                  ± 50

 1,8-3,5

,5-10

³50

£0,1

up to  8000

Enclosed

EEF 1.430900 

4300-5000

± 30

                  ± 50

 1,8-3,5

3,5-10

³50

£0,2

up to  8000

Enclosed

EEF 1.500800 

5000-8000

± 30

                  ± 50

 1,8-3,5

3,5-10

³50

£0,2

up to  8000

“-“

EEF 2.80110 

800-1100

± 10

                 ± 30

 1,8-3,5

3,5-10

³50

£0,2

up to  1200

Exposed

EEF 2.110170 

1100-1700

± 20

                  ± 50

 1,8-3,5

3,5-10

³50

£0,2

up to  3000

Exposed

EEF 2.170210 

1700-2100

± 20

                  ± 50

 1,8-3,5

3,5-10

³50

£0,2

up to  3000

“-“

 

EEF 2.210380 

2100-3800

± 30

                  ± 50

 1,8-3,5

3,5-10

³60

£0,2

up to  8000

“-“

EEF 2.380430

3800-4300

± 30

                  ± 50

 1,8-3,5

3,5-10

³60

£0,2

up to  8000

 

“-“

EEF 2.380500

4300-5000

± 30

               ± 50

 1,8-3,5

3,5-10

³60

£0,2

up to 8000

“-“

EEF 2.380800

  5000-8000

± 30

                  ± 50

 1,8-3,5

3,5-10

³60

£0,2

up to  8000

 

“-“

 

 

  * We can produce the filters within a spectral range, but also with parameters different from the one above based on your requirements. Clarification of some of the terminology used here can be found on the following web-page.

1.  lî - central wavelength (CWL) of the filter at the maximum transmittance of the filter;

2.  (Dl0.5  / lî ) - relative halfwidth of filter transmittance, where

       Dl0.5 - full width half maximum;

3.  Tmax - maximum transmittance of the filter;

4.  Tf % - transmittance in the blocking range;

5.  Blocking range- the spectral range outside the desirable working range of the filter.

 

We can produce almost any optical filters, the most complicated ones are often for analytical chemistry applications where we take into account not only the absorbance spectra of the gases but also  spectral sensitivities of detectors.