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NBP 450-40 HT 
Narrow Bandpass Filter


Key features

  • Average transmittance 90%
  • Steep slopes
  • Wavelength tolerance +/- 3nm
  • Deep blocking / High optical density
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Titel Schneider-Kreuznach Narrow Bandpass Filter NBP 450-40 HT

Schneider-Kreuznach Narrow Bandpass Filters are designed for applications requiring precise wavelength selection, such as laser systems, 3D measurement, and metrology. With steep slopes, high transmission (up to 90%), and deep blocking outside the passband, these filters ensure accurate results in demanding environments. 

The Schneider-Kreuznach NBP 450-40 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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Datasheet
Transmission
Product sheet
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Product brochure 2024
Product brochure 2025

Technical specifications: NBP 450-40 HT Narrow Bandpass Filter

TypeStandard
Wavelength range, 50%-50%433-466 nm
Center Wavelength450 nm
Bandwidth40 nm
Angle of incident0° +/- 8°
Central Wavelength (CWL)450 +/- 3nm
Full Width at Half Maximum (FWHM)40 +/- 1nm
Transmittance433 - 466 nm: Tabs > 90%
Blocking< 420 nm: Tabs < 0.5%
490 - 990 nm: Tabs < 0.5%
Wavefront distortionØ >18 - 30 mm: 13/ 1(0.25) | Ø >30 - 50 mm: 13/ 1(0.30)
Parallelism1'
Glass thickness tolerance+/- 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

Titel Schneider-Kreuznach Narrow Bandpass Filter NBP 450-40 HT



Transmission of the NBP 450-40 HT Filter

 

Transmission Data

 

Download Excel

Wavelength (nm) Transmission (%)
350 0.00
351 0.00
352 0.00
353 0.00
354 0.00
355 0.00
356 0.00
357 0.01
358 0.00
359 0.00
360 0.03
361 0.11
362 0.02
363 0.03
364 0.17
365 0.10
366 0.02
367 0.01
368 0.02
369 0.06
370 0.55
371 0.17
372 0.19
373 0.40
374 0.03
375 0.01
376 0.00
377 0.00
378 0.00
379 0.01
380 0.02
381 0.41
382 0.04
383 0.01
384 0.01
385 0.01
386 0.02
387 0.04
388 0.24
389 0.13
390 0.06
391 0.05
392 0.09
393 0.34
394 0.43
395 0.11
396 0.05
397 0.05
398 0.05
399 0.09
400 0.25
401 0.68
402 0.41
403 0.23
404 0.20
405 0.27
406 0.50
407 0.69
408 0.38
409 0.20
410 0.14
411 0.13
412 0.15
413 0.19
414 0.26
415 0.31
416 0.28
417 0.23
418 0.20
419 0.20
420 0.22
421 0.29
422 0.42
423 0.70
424 1.36
425 3.19
426 9.01
427 28.08
428 58.10
429 64.75
430 67.51
431 77.19
432 89.55
433 97.27
434 98.92
435 98.42
436 98.25
437 98.45
438 98.46
439 98.29
440 98.30
441 98.61
442 98.95
443 98.99
444 98.76
445 98.52
446 98.54
447 98.79
448 99.04
449 99.04
450 98.79
451 98.49
452 98.38
453 98.53
454 98.78
455 98.91
456 98.79
457 98.46
458 98.15
459 98.06
460 98.28
461 98.67
462 99.01
463 98.98
464 98.28
465 96.56
466 93.36
467 88.15
468 80.56
469 70.72
470 59.42
471 47.97
472 37.46
473 28.57
474 21.47
475 16.02
476 11.94
477 8.93
478 6.72
479 5.11
480 3.93
481 3.05
482 2.39
483 1.88
484 1.49
485 1.19
486 0.96
487 0.79
488 0.65
489 0.54
490 0.44
491 0.36
492 0.29
493 0.23
494 0.19
495 0.15
496 0.11
497 0.08
498 0.05
499 0.03
500 0.02
501 0.01
502 0.01
503 0.00
504 0.00
505 0.00
506 0.00
507 0.00
508 0.00
509 0.00
510 0.00
511 0.00
512 0.00
513 0.00
514 0.00
515 0.00
516 0.00
517 0.00
518 0.00
519 0.00
520 0.00
521 0.00
522 0.00
523 0.00
524 0.00
525 0.00
526 0.00
527 0.00
528 0.00
529 0.00
530 0.00
531 0.00
532 0.00
533 0.00
534 0.00
535 0.00
536 0.00
537 0.00
538 0.00
539 0.00
540 0.00
541 0.00
542 0.00
543 0.00
544 0.00
545 0.00
546 0.00
547 0.00
548 0.00
549 0.00
550 0.00
551 0.00
552 0.00
553 0.00
554 0.00
555 0.00
556 0.00
557 0.00
558 0.00
559 0.00
560 0.00
561 0.00
562 0.00
563 0.00
564 0.00
565 0.00
566 0.00
567 0.00
568 0.00
569 0.00
570 0.00
571 0.00
572 0.00
573 0.00
574 0.00
575 0.00
576 0.00
577 0.00
578 0.00
579 0.00
580 0.00
581 0.00
582 0.00
583 0.00
584 0.00
585 0.00
586 0.00
587 0.00
588 0.00
589 0.00
590 0.00
591 0.00
592 0.00
593 0.00
594 0.00
595 0.00
596 0.00
597 0.00
598 0.00
599 0.00
600 0.00
601 0.00
602 0.00
603 0.00
604 0.00
605 0.00
606 0.00
607 0.00
608 0.00
609 0.00
610 0.00
611 0.00
612 0.00
613 0.00
614 0.00
615 0.00
616 0.00
617 0.00
618 0.00
619 0.00
620 0.00
621 0.00
622 0.00
623 0.00
624 0.00
625 0.00
626 0.00
627 0.00
628 0.00
629 0.01
630 0.01
631 0.01
632 0.01
633 0.01
634 0.02
635 0.02
636 0.03
637 0.04
638 0.06
639 0.08
640 0.12
641 0.16
642 0.20
643 0.21
644 0.19
645 0.15
646 0.13
647 0.10
648 0.09
649 0.08
650 0.07
651 0.07
652 0.06
653 0.06
654 0.06
655 0.06
656 0.05
657 0.05
658 0.05
659 0.05
660 0.05
661 0.05
662 0.05
663 0.05
664 0.05
665 0.05
666 0.06
667 0.06
668 0.06
669 0.06
670 0.07
671 0.07
672 0.08
673 0.09
674 0.10
675 0.11
676 0.12
677 0.13
678 0.14
679 0.15
680 0.17
681 0.18
682 0.19
683 0.20
684 0.21
685 0.21
686 0.21
687 0.21
688 0.21
689 0.21
690 0.20
691 0.19
692 0.18
693 0.16
694 0.15
695 0.14
696 0.14
697 0.13
698 0.12
699 0.12
700 0.11
701 0.11
702 0.11
703 0.11
704 0.11
705 0.12
706 0.12
707 0.12
708 0.12
709 0.12
710 0.13
711 0.12
712 0.12
713 0.12
714 0.12
715 0.11
716 0.11
717 0.10
718 0.10
719 0.09
720 0.09
721 0.09
722 0.09
723 0.09
724 0.09
725 0.09
726 0.09
727 0.09
728 0.09
729 0.10
730 0.10
731 0.11
732 0.12
733 0.13
734 0.13
735 0.14
736 0.16
737 0.17
738 0.18
739 0.19
740 0.20
741 0.22
742 0.23
743 0.24
744 0.25
745 0.26
746 0.27
747 0.28
748 0.28
749 0.29
750 0.30
751 0.31
752 0.32
753 0.32
754 0.33
755 0.34
756 0.34
757 0.34
758 0.34
759 0.34
760 0.34
761 0.33
762 0.33
763 0.32
764 0.31
765 0.29
766 0.28
767 0.27
768 0.25
769 0.24
770 0.22
771 0.21
772 0.20
773 0.19
774 0.18
775 0.17
776 0.16
777 0.16
778 0.15
779 0.15
780 0.14
781 0.14
782 0.14
783 0.14
784 0.14
785 0.14
786 0.14
787 0.14
788 0.14
789 0.14
790 0.15
791 0.15
792 0.15
793 0.16
794 0.16
795 0.16
796 0.17
797 0.17
798 0.18
799 0.18
800 0.18
801 0.19
802 0.19
803 0.19
804 0.19
805 0.19
806 0.19
807 0.19
808 0.19
809 0.18
810 0.18
811 0.17
812 0.17
813 0.16
814 0.16
815 0.15
816 0.15
817 0.14
818 0.13
819 0.13
820 0.12
821 0.12
822 0.11
823 0.11
824 0.10
825 0.10
826 0.10
827 0.09
828 0.09
829 0.09
830 0.08
831 0.08
832 0.08
833 0.08
834 0.08
835 0.07
836 0.07
837 0.07
838 0.07
839 0.07
840 0.07
841 0.07
842 0.07
843 0.07
844 0.07
845 0.07
846 0.07
847 0.07
848 0.07
849 0.07
850 0.07
851 0.07
852 0.07
853 0.07
854 0.07
855 0.08
856 0.08
857 0.08
858 0.08
859 0.08
860 0.09
861 0.09
862 0.10
863 0.10
864 0.11
865 0.11
866 0.12
867 0.12
868 0.13
869 0.14
870 0.15
871 0.16
872 0.18
873 0.19
874 0.20
875 0.22
876 0.23
877 0.24
878 0.25
879 0.25
880 0.25
881 0.24
882 0.23
883 0.22
884 0.20
885 0.19
886 0.17
887 0.16
888 0.14
889 0.13
890 0.12
891 0.10
892 0.10
893 0.09
894 0.08
895 0.07
896 0.07
897 0.06
898 0.06
899 0.06
900 0.05
901 0.05
902 0.05
903 0.05
904 0.04
905 0.04
906 0.04
907 0.04
908 0.04
909 0.04
910 0.04
911 0.04
912 0.04
913 0.04
914 0.04
915 0.04
916 0.04
917 0.04
918 0.04
919 0.04
920 0.04
921 0.05
922 0.05
923 0.05
924 0.05
925 0.06
926 0.06
927 0.06
928 0.07
929 0.07
930 0.07
931 0.08
932 0.09
933 0.09
934 0.10
935 0.11
936 0.12
937 0.13
938 0.14
939 0.15
940 0.17
941 0.18
942 0.20
943 0.21
944 0.23
945 0.25
946 0.27
947 0.28
948 0.30
949 0.31
950 0.32
951 0.33
952 0.33
953 0.34
954 0.34
955 0.33
956 0.33
957 0.32
958 0.32
959 0.31
960 0.30
961 0.30
962 0.29
963 0.28
964 0.28
965 0.27
966 0.27
967 0.27
968 0.26
969 0.26
970 0.26
971 0.26
972 0.26
973 0.26
974 0.26
975 0.26
976 0.26
977 0.27
978 0.27
979 0.28
980 0.28
981 0.29
982 0.30
983 0.31
984 0.32
985 0.33
986 0.34
987 0.36
988 0.37
989 0.39
990 0.41
991 0.43
992 0.45
993 0.47
994 0.49
995 0.52
996 0.55
997 0.57
998 0.60
999 0.63
1000 0.66
1001 0.69
1002 0.72
1003 0.75
1004 0.78
1005 0.81
1006 0.83
1007 0.86
1008 0.88
1009 0.90
1010 0.92
1011 0.93
1012 0.94
1013 0.96
1014 0.97
1015 0.97
1016 0.98
1017 0.99
1018 1.00
1019 1.00
1020 1.01
1021 1.02
1022 1.03
1023 1.04
1024 1.05
1025 1.06
1026 1.08
1027 1.10
1028 1.12
1029 1.14
1030 1.16
1031 1.19
1032 1.21
1033 1.25
1034 1.28
1035 1.32
1036 1.36
1037 1.40
1038 1.45
1039 1.50
1040 1.56
1041 1.61
1042 1.68
1043 1.74
1044 1.81
1045 1.89
1046 1.96
1047 2.04
1048 2.13
1049 2.21
1050 2.30

 

 

Mounted Industrial Filter [IF]

MountThicknessID
CMT2mm1107304
CMT1mmID to be defined
SH 25.52mm1107305
SH 25.51mmOn request only
SH 27.02mm1107306
SH 27.01mmOn request only
SN1 30.52mm1107307
SN1 30.51mmOn request only
SH 34.02mm1107308
SH 34.01mmOn request only
SH 35.52mm1107309
SH 35.51mmOn request only
SH 37.02mm1107310
SH 37.01mmOn request only
SH 39.02mm1107311
SH 40.52mm1107312
SH 43.02mm1107313
SH 46.02mm1107314
SH 49.02mm1107315

Order nomenclature
IF NBP 450-40 HT [Mount] [Thickness]
Example: IF NBP 450-40 HT SH 25.5 2
 

Unmounted Industrial Filterglass [IFG]

DiameterThicknessID
22.0 mm2mmID to be defined
22.0 mm1mmID to be defined
23.0 mm2mmID to be defined
23.0 mm1mmOn request only
24.0 mm2mmID to be defined
24.0 mm1mmOn request only
29.0 mm2mmID to be defined
29.0 mm1mmOn request only
31.0 mm2mmID to be defined
31.0 mm1mmOn request only
33.0 mm2mmID to be defined
33.0 mm1mmOn request only
34.0 mm2mm1106818
34.0 mm1mmID to be defined
36.0 mm2mmID to be defined
38.0 mm2mmID to be defined
40.0 mm2mmID to be defined
43.0 mm2mm1107241
46.0 mm2mm1107098

Order nomenclature
IFG NBP 450-40 HT [Diameter] [Thickness]
Example: IFG NBP 450-40 HT 23.0 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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+49 (0) 671 601 0

 

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