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NBP 1450-25 HT 
SWIR Filter



Key features

  • Average transmittance >80%
  • Steep slopes
  • Wavelength tolerance +/- 5 nm
  • Deep blocking / High optical density
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Schneider-Kreuznach SWIR Filter NBP 1450-25

Schneider-Kreuznach SWIR filters are designed for optimal performance in the short-wave infrared range, providing stable center wavelengths and high transmission. Their durable construction ensures reliable results even in challenging industrial or surveillance environments.

The Schneider-Kreuznach NBP 1450-25 HT magnetron sputtered industrial narrow bandpass filter features steep slopes for sophisticated applications that require a sharp transition between high transmission and deep blocking at stable cut-on and cut-off wavelengths. The layers are applied by means of magnetron sputtering, a special coating process. Schneider-Kreuznach narrow bandpass filters are RoHS conform. Custom sizes are available on request.

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Technical specifications: NBP 1450-25 HT SWIR Filter

TypeStandard
Wavelength range, 50%-50%1437-1463 nm
Center Wavelength1450
Bandwidth25
Transmission90 %
Optical densityOD4
Angle of incident0o +/- 8o
Central Wavelength (CWL)1450 +/- 5nm
Full Width at Half MaFimum (FWHM)25 +/- 5nm
Transmittance1437 - 1463 nm: Tabs > 90%
Blocking< 1430 nm: Tabs < 0.025%
1470 - 2000 nm: Tabs < 0.025%
Wavefront distortion0 >18 - 30 mm: 13/ 1(0.25) 1 0 >30 - 50 mm: 13/ 1(0.30)
Parallelism1J
Glass thickness tolerance1.1 mm +/- 0.08mm

Filter specifications glossary

 

Specification Description
Angle of incidence (AOI) Angle between a ray of light and the surface normal to the surface it strikes
Cut-on wavelength Wavelength at which the transmission of the lower edge rises to 50%
Cut-off wavelength Wavelength at which the transmission of hhe upper edge drops to 50%
Central Wavelength (CWL) Center of the filter’s passband for which it is primarily designed
Full Width at Half Maximum (FWHM) Spectral bandwidth measured at 50% of the peak transmittance
Transmittance Ratio of transmitted light intensity to incident light intensity
Blocking Strong attenuation of light intensity over a specified wavelength range
Wavefront distortion Deviation of the transmitted wavefront from a reference plane
Parallelism Angular deviation between the two main surfaces of the filter
Glass thickness tolerance Permissible deviation from the specified substrate thickness
Wavelength range Spectral region over which the filter is designed to operate
Coating Applied layer(s) defining the filter’s spectral characteristics
Temperature range Recommended operational limits for ambient or device temperature
Glass thickness Nominal thickness of the filter glass
Optical density Attenuation measure defined as −log₁₀ of transmittance
Transmittance average Average light transmission across the specified wavelength range
Wavelength Wavelength range at which the polarizer specification applies
Transmittance, unpolarized light Ratio of transmitted to incident intensity for unpolarized light
Extinction ratio Ratio of transmitted intensity along the polarizer’s pass axis to that along its block axis
Max. size Largest standard dimension for the polarizer film
Temperature range Minimum to maximum temperature for reliable performance
Substrate Base material on which the polarizing film is applied
Thickness Nominal overall thickness of the polarizer film
Info Unless otherwise stated, all dimensions in this data sheet are in mm

 

Picture of the filter

Schneider-Kreuznach SWIR Filter NBP 1450-25



Transmission of the NBP 1450-25 HT Filter


 

Transmission Data

 

Download Excel

Wavelength (nm) Transmission (%)
1420 0.612165
1420.5 0.446641
1421 0.615953
1421.5 0.326089
1422 0.994564
1422.5 1.088168
1423 1.066778
1423.5 0.948261
1424 0.945413
1424.5 1.275758
1425 1.2969
1425.5 1.501771
1426 1.877453
1426.5 1.950246
1427 1.618252
1427.5 2.177592
1428 2.795394
1428.5 3.414294
1429 3.937198
1429.5 4.265309
1430 4.637289
1430.5 5.518053
1431 6.393569
1431.5 7.696973
1432 9.281763
1432.5 10.942228
1433 11.839893
1433.5 14.448243
1434 16.946755
1434.5 20.213091
1435 23.346782
1435.5 26.95621
1436 31.68166
1436.5 36.547744
1437 42.287496
1437.5 47.832043
1438 53.495976
1438.5 59.321838
1439 65.239788
1439.5 70.679388
1440 75.20282
1440.5 79.179053
1441 82.719156
1441.5 85.709945
1442 87.67218
1442.5 89.417492
1443 91.243758
1443.5 92.275045
1444 92.319478
1444.5 93.553745
1445 93.944132
1445.5 94.112053
1446 93.869397
1446.5 94.640727
1447 94.80338
1447.5 94.970176
1448 94.597751
1448.5 94.848689
1449 95.166714
1449.5 95.178707
1450 94.693814
1450.5 94.493716
1451 93.940159
1451.5 93.435509
1452 93.243749
1452.5 92.805931
1453 92.328018
1453.5 92.283955
1454 92.472295
1454.5 92.190527
1455 91.831882
1455.5 91.507414
1456 91.768141
1456.5 92.305288
1457 92.459089
1457.5 91.858862
1458 92.220698
1458.5 91.500085
1459 91.012061
1459.5 89.871746
1460 88.100171
1460.5 84.855951
1461 80.825604
1461.5 75.849725
1462 70.296175
1462.5 64.051206
1463 57.237629
1463.5 50.868014
1464 44.768537
1464.5 38.91757
1465 33.351336
1465.5 28.283143
1466 24.294902
1466.5 20.272036
1467 17.290618
1467.5 14.499697
1468 12.658518
1468.5 10.750941
1469 9.036426
1469.5 7.934206
1470 6.896377
1470.5 5.376562
1471 5.102667
1471.5 4.389189
1472 3.959849
1472.5 3.339428
1473 3.289179
1473.5 2.714647
1474 2.42888
1474.5 2.460823
1475 1.679361
1475.5 1.451029
1476 2.029647
1476.5 1.63092
1477 1.286105
1477.5 0.872119
1478 0.137958
1478.5 1.456472
1479 1.265404
1479.5 0.347019
1480 0.263372

 

 

Mounted Industrial Filter [IF]


MountThicknessID
CMT1.1 mm1110167
SH 25.51.1 mm1110168
SH 27.01.1 mm1110169
SN1 30.51.1 mm1110170
SH 34.01.1 mm1110171
SH 35.51.1 mm1110172
SH 37.01.1 mm1110173
SH 39.01.1 mm1110174
SH 40.51.1 mm1110175
SH 43.01.1 mm1110176
SH 46.01.1 mm1110177
SH 49.01.1 mm1110178

Order nomenclature
IF NBP 1450-25 HT [Mount] [Thickness]
Example: IF NBP 1450-25 HT SH 25.5 2
 

Mounts for Industrial Optical Filters

C-Mount

Defined by 1” (25.4mm) diameter and 32 turns per inch pitch, the C-Mount thread is a popular camera mount in machine vision industry. Schneider-Kreuznach offers a C-Mount option for most filters. So filters can go in any C-Mount based mechanics in vision systems.

Another popular application, C-Mounts can easily be used for, is placing a filter in front of the sensor into the camera. The extension of the back flange distance has to be considered for imaging applications.

Key Features of C-Mount Filters:
Fits in C-Mount cameras
Black Anodized Brass

Applications of C-Mount Filters:
To be mounted in C-Mount cameras
Vision Systems based on C-Mount mechanics

Thread Diameter Clear Thickness
Aperture
1'' - 32 25.4 mm 21.1 mm 3.6 mm

 

Filter C-Mount

 

 

SH-Mount

Schneider-Kreuznach offers a variety of mounts with common thread sizes to fit on most camera lens systems. SH-Mount is the standard, when high flexibility is needed. Filters are held by retainer rings. SH-Mounts are extreme robust.

All SH-Mounts have a female and male M-thread, and can be stacked if several filters must be combined.

Key features of SH-Mount Filters:
Stackable
​​​​​Robust
Black Anodized Brass

Applications of SH-Mount Filters:
Mounted on lenses in imaging applications
Mounted on measurement instruments

Thread Diameter Clear Thickness
Aperture
M 25.5x0.5 29.5 mm 20.8mm 6.4 mm
M 27.0x0.5 31.0 mm 21.8 mm 6.4 mm
M 35.5x0.5 39.5 mm 29.8 mm 6.4 mm
M 37.0x0.75 41.0 mm 31.8 mm 6.9 mm
M 39.0x0.5 43.0 mm 33.8 mm 6.4 mm
M 40.5x0.5 44.5 mm 35.8 mm 6.4 mm
M 43.0x0.75 47.0 mm 37.8 mm 6.9 mm
M 46.0x0.75 50.0 mm 40.8 mm 6.9 mm
M 49.0x0.75 53.0 mm 43.8 mm 6.9 mm
M 52.0x0.75 56.0 mm 46.8 mm 6.9 mm
M 55.0x0.75 59.0 mm 49.8 mm 6.9 mm
M 58.0x0.75 62.0 mm 52.8 mm 6.9 mm
M 62.0x0.75 66.0 mm 56.8 mm 6.9 mm
M 67.0x0.75 71.0 mm 61.8 mm 6.9 mm

 

SH Filter-Mount

 

SN1-Mount

The SN1-Mount was designed for the in machine vision popular M30.5x0.5 thread. With its high clear aperture, vignetting can be avoided, even for wide angle applications. The filter is glued into the mount, in order to secure it against vibrations when integrated into robots or production lines. It is ideal to be used in automated fabrication.

SN1-Mounts have a male and female M-thread, and can be stacked if several filters must be combined.

Key features SN1-Mount Filters:
Maximum Clear Aperture
No vignetting
Stackable
Robust
Black Anodized Brass

Applications SN1-Mount Filters:
Mounted on lenses in imaging applications
Mounted on measurement instruments

Thread Diameter Clear Thickness
Aperture
M 30.5x0.5 32 mm 28 mm 6.5 mm

 

SN1 Filter-Mount

 

SN1-Mount

The SN2-Mount is designed for polarizers and achieves highest possible aperture, avoiding vignetting in machine vision systems. Its unique locking mechanism fixes the correct orientation, even in typical industrial environment. The filters are glued into the mount to secure them against vibrations when integrated into robots or production lines. Ideal for use in automated fabrication.

SN2-Mounts have a female and male M-thread, and can be stacked if several filters must be combined.

Key features:
Rotatable
High clear Aperture
No vignetting
Stackable
Robust
Black Anodized Brass

Applications:
Mounted on lenses in imaging applications
Mounted on measurement instruments

Thread Diameter Clear Thickness
Aperture
M 25.5x0.5 27 mm 22.7 mm 7.4 mm
M 27.0x0.5 28.5 mm 23.7 mm 7.4 mm
M 30.5x0.5 32 mm 26.7 mm 7.4 mm
M 35.5 x0.5 37 mm 31.7 mm 7.4 mm
M 37.0x0.75 38.5 mm 32.7 mm 7.4 mm
M 40.5x0.5 42 mm 36.7 mm 7.4 mm
M 43.0x0.75 44.5 mm 37.7 mm 7.4 mm
M 46.0x0.75 47.5 mm 41.7 mm 7.4 mm
M 49.0x0.75 50.5 mm 44.7 mm 7.4 mm

 

SN2 Filter-Mount

DH-Mount

Schneider-Kreuznach offers a variety of mounts for polarizers with common thread sizes to fit on most camera lens systems. The DH-Mount is rotatable to adjust polarization axis in the required orientation. Filters are held by retainer rings.

All DH-Mounts have a female and male M-thread and can be stacked if several filters must be combined.

Key features:
Rotatable
Stackable
Black Anodized Brass

Applications:
Mounted on lenses in imaging applications
Mounted on measurement instruments

Thread Diameter Clear Thickness
Aperture
M 25.5x0.5 27 mm 20.8 mm 9.2 mm
M 27.0x0.5 28.5 mm 21.8 mm 9.2 mm
M 30.5x0.5 32 mm 25.8 mm 9.2 mm
M 35.5 x0.5 37 mm 30.8 mm 9.2 mm
M 37.0x0.75 38.5 mm 31.8 mm 9.2 mm
M 40.5x0.5 42 mm 35.8 mm 9.2 mm
M 43.0x0.75 44.5 mm 37.8 mm 9.2 mm
M 46.0x0.75 47.5 mm 40.8 mm 9.2 mm
M 49.0x0.75 50.5 mm 43.8 mm 9.2 mm
M 52.0x0.75 53.5 mm 46.8 mm 9.2 mm
M 55.0x0.75 56.5 mm 49.8 mm 9.2 mm
M 58.0x0.75 59.5 mm 52.8 mm 9.2 mm
M 62.0x0.75 63.5 mm 56.8 mm 9.2 mm
M 67.0x0.75 68.5 mm 61.8 mm 9.2 mm

 

DH Filter-Mount



 

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