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NBP 830-20 HT 
Narrow Bandpass Filter


Key features

  • Average transmittance 90%
  • Steep slopes
  • Wavelength tolerance +/- 3nm
  • Deep blocking / High optical density
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Schneider-Kreuznach Narrow Bandpass Filter NBP 830-20 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 830-20 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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Transmission
Product sheet
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Product brochure 2024
Product brochure 2025

Technical specifications: NBP 830-20 HT Narrow Bandpass Filter

TypeOn request
Wavelength range, 50%-50%820-840 nm
Center Wavelength830 nm
Bandwidth20 nm
Angle of incident0° +/- 8°
Central Wavelength (CWL)830 +/- 4nm
Full Width at Half Maximum (FWHM)22 +/- 1nm
Transmittance828 - 832 nm: Tabs > 90%
Blocking< 805 nm: Tabs < 0.5%
855 - 1100 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

Schneider-Kreuznach Narrow Bandpass Filter NBP 830-20 HT



Transmission of the NBP 830-20 HT Filter

 

Transmission Data

 

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Wavelength (nm) Transmission (%)
350 0.009960
351 0.017909
352 0.016905
353 0.031833
354 0.030830
355 0.012925
356 0.006958
357 0.016902
358 0.015902
359 0.008942
360 0.027823
361 0.038755
362 0.038752
363 0.005961
364 0.021859
365 0.008940
366 0.015894
367 0.003970
368 0.032763
369 0.030774
370 0.032737
371 0.000000
372 0.006946
373 0.010913
374 0.011899
375 0.019824
376 0.00
377 0.043577
378 0.045620
379 0.025733
380 0.000991
381 0.00
382 0.042600
383 0.033641
384 0.029582
385 0.019835
386 0.012887
387 0.008922
388 0.006941
389 0.006940
390 0.004957
391 0.003966
392 0.002974
393 0.009915
394 0.014869
395 0.015860
396 0.010905
397 0.007930
398 0.006938
399 0.003965
400 0.005948
401 0.009913
402 0.012889
403 0.007930
404 0.026766
405 0.027753
406 0.008921
407 0.003964
408 0.006937
409 0.013871
410 0.010899
411 0.005943
412 0.003961
413 0.005942
414 0.019799
415 0.049485
416 0.055408
417 0.032652
418 0.019787
419 0.012854
420 0.025729
421 0.042498
422 0.062265
423 0.080001
424 0.114489
425 0.119387
426 0.078876
427 0.050282
428 0.039420
429 0.040376
430 0.071830
431 0.130796
432 0.163179
433 0.128669
434 0.075584
435 0.061804
436 0.065689
437 0.084259
438 0.120419
439 0.151655
440 0.174075
441 0.145620
442 0.099649
443 0.060567
444 0.044918
445 0.038078
446 0.031243
447 0.030269
448 0.031244
449 0.045875
450 0.051740
451 0.061512
452 0.084910
453 0.127864
454 0.188368
455 0.243917
456 0.273101
457 0.271119
458 0.269137
459 0.254433
460 0.228021
461 0.190014
462 0.137324
463 0.096390
464 0.063275
465 0.048649
466 0.036967
467 0.020420
468 0.013605
469 0.011659
470 0.012626
471 0.010679
472 0.012620
473 0.018440
474 0.015519
475 0.013579
476 0.012607
477 0.015507
478 0.017445
479 0.018408
480 0.026151
481 0.033898
482 0.044552
483 0.055185
484 0.087132
485 0.119073
486 0.133607
487 0.110350
488 0.078391
489 0.057098
490 0.041608
491 0.029999
492 0.023219
493 0.020318
494 0.018385
495 0.018381
496 0.015479
497 0.022250
498 0.023219
499 0.014511
500 0.012577
501 0.008707
502 0.009675
503 0.008705
504 0.010641
505 0.019348
506 0.020314
507 0.018375
508 0.015474
509 0.012572
510 0.010638
511 0.008703
512 0.008707
513 0.013539
514 0.011608
515 0.005804
516 0.004837
517 0.003869
518 0.004836
519 0.004835
520 0.005805
521 0.014507
522 0.012574
523 0.007735
524 0.006768
525 0.007735
526 0.008701
527 0.009669
528 0.013534
529 0.017399
530 0.021266
531 0.024166
532 0.033834
533 0.057995
534 0.094713
535 0.144013
536 0.177847
537 0.155614
538 0.108258
539 0.069592
540 0.048324
541 0.034795
542 0.025129
543 0.020302
544 0.017407
545 0.016444
546 0.016444
547 0.006773
548 0.008708
549 0.005808
550 0.006775
551 0.004839
552 0.009679
553 0.010647
554 0.005807
555 0.003872
556 0.006774
557 0.005807
558 0.007738
559 0.010646
560 0.020335
561 0.021289
562 0.023216
563 0.028045
564 0.038679
565 0.059912
566 0.102369
567 0.191149
568 0.285593
569 0.264191
570 0.156116
571 0.077990
572 0.043309
573 0.030759
574 0.022093
575 0.020143
576 0.016294
577 0.017234
578 0.019132
579 0.013374
580 0.012404
581 0.013341
582 0.014281
583 0.016165
584 0.017099
585 0.024672
586 0.024651
587 0.023677
588 0.025556
589 0.027427
590 0.027405
591 0.028335
592 0.029282
593 0.031154
594 0.028316
595 0.025480
596 0.026416
597 0.025474
598 0.023580
599 0.023579
600 0.023576
601 0.023577
602 0.023578
603 0.019807
604 0.019800
605 0.017911
606 0.017911
607 0.016028
608 0.016972
609 0.017920
610 0.016979
611 0.014148
612 0.012264
613 0.013205
614 0.013209
615 0.013206
616 0.013211
617 0.014152
618 0.015099
619 0.012266
620 0.011324
621 0.010380
622 0.008493
623 0.008493
624 0.007549
625 0.010379
626 0.010379
627 0.008492
628 0.006605
629 0.005661
630 0.005662
631 0.006605
632 0.006605
633 0.011320
634 0.009435
635 0.008490
636 0.008490
637 0.008488
638 0.010374
639 0.011318
640 0.014145
641 0.016971
642 0.018859
643 0.016968
644 0.016970
645 0.020734
646 0.022622
647 0.027329
648 0.030155
649 0.035803
650 0.033915
651 0.032026
652 0.032970
653 0.032024
654 0.032961
655 0.030126
656 0.032958
657 0.032945
658 0.030117
659 0.027290
660 0.024466
661 0.025401
662 0.023517
663 0.023518
664 0.028208
665 0.030084
666 0.025386
667 0.023500
668 0.023491
669 0.025371
670 0.023493
671 0.023486
672 0.030999
673 0.031934
674 0.029112
675 0.030976
676 0.031910
677 0.031916
678 0.034718
679 0.036597
680 0.041270
681 0.045018
682 0.043123
683 0.042196
684 0.045928
685 0.050639
686 0.051564
687 0.051552
688 0.052471
689 0.054332
690 0.055258
691 0.054309
692 0.055243
693 0.056171
694 0.061758
695 0.066432
696 0.073904
697 0.087924
698 0.098202
699 0.110337
700 0.123381
701 0.139234
702 0.151355
703 0.161635
704 0.171850
705 0.177406
706 0.171770
707 0.161450
708 0.154907
709 0.152071
710 0.152044
711 0.159472
712 0.175277
713 0.203163
714 0.247852
715 0.312972
716 0.375313
717 0.391018
718 0.329502
719 0.217757
720 0.133967
721 0.088355
722 0.062297
723 0.047406
724 0.039965
725 0.034373
726 0.032507
727 0.030640
728 0.029699
729 0.032475
730 0.031539
731 0.026892
732 0.027810
733 0.027800
734 0.025942
735 0.026854
736 0.024998
737 0.028689
738 0.028673
739 0.024970
740 0.024034
741 0.024949
742 0.024017
743 0.024933
744 0.026768
745 0.028600
746 0.025825
747 0.025815
748 0.022119
749 0.023030
750 0.022102
751 0.022092
752 0.022083
753 0.022991
754 0.021146
755 0.018378
756 0.017454
757 0.016528
758 0.016517
759 0.016511
760 0.018340
761 0.021081
762 0.020153
763 0.015565
764 0.017392
765 0.017382
766 0.017375
767 0.017367
768 0.020100
769 0.020089
770 0.019168
771 0.017333
772 0.016418
773 0.016410
774 0.019130
775 0.018212
776 0.020935
777 0.021841
778 0.020006
779 0.017268
780 0.017258
781 0.016344
782 0.018151
783 0.019047
784 0.023569
785 0.023562
786 0.023551
787 0.019917
788 0.019906
789 0.020801
790 0.019889
791 0.019876
792 0.021669
793 0.022563
794 0.024352
795 0.029763
796 0.036054
797 0.035134
798 0.039624
799 0.044097
800 0.049483
801 0.052147
802 0.050328
803 0.056588
804 0.060154
805 0.075392
806 0.085227
807 0.104926
808 0.129964
809 0.172031
810 0.228413
811 0.312478
812 0.437682
813 0.651571
814 0.981524
815 1.54
816 2.42
817 3.96
818 6.58
819 11.49
820 19.94
821 34.20
822 53.04
823 72.84
824 87.76
825 95.35
826 98.10
827 98.68
828 98.77
829 98.80
830 98.82
831 98.83
832 98.79
833 98.67
834 98.52
835 98.25
836 97.86
837 97.60
838 97.51
839 97.73
840 97.63
841 95.10
842 87.15
843 71.38
844 51.24
845 32.72
846 19.32
847 11.23
848 6.58
849 4.03
850 2.54
851 1.66
852 1.10
853 0.762310
854 0.541896
855 0.400076
856 0.299611
857 0.235828
858 0.190071
859 0.150521
860 0.124478
861 0.108277
862 0.091220
863 0.080427
864 0.072354
865 0.070607
866 0.067941
867 0.057111
868 0.052620
869 0.049927
870 0.049063
871 0.044558
872 0.043680
873 0.046452
874 0.046495
875 0.040143
876 0.036526
877 0.037481
878 0.035682
879 0.039380
880 0.038505
881 0.041289
882 0.040402
883 0.033991
884 0.032161
885 0.033099
886 0.033101
887 0.033108
888 0.034015
889 0.036776
890 0.034015
891 0.028502
892 0.026663
893 0.025751
894 0.027574
895 0.023898
896 0.029407
897 0.030329
898 0.025729
899 0.022052
900 0.022047
901 0.020212
902 0.021125
903 0.019286
904 0.021125
905 0.020209
906 0.018377
907 0.016540
908 0.016544
909 0.015630
910 0.015636
911 0.014726
912 0.017495
913 0.016587
914 0.014752
915 0.011996
916 0.012930
917 0.012944
918 0.012030
919 0.012973
920 0.012055
921 0.015785
922 0.016730
923 0.014898
924 0.013045
925 0.014936
926 0.014011
927 0.015910
928 0.017796
929 0.020639
930 0.022541
931 0.017873
932 0.016945
933 0.017915
934 0.016988
935 0.018904
936 0.021753
937 0.030312
938 0.025605
939 0.022786
940 0.020912
941 0.022843
942 0.020956
943 0.022890
944 0.026721
945 0.031533
946 0.035383
947 0.027764
948 0.025866
949 0.026848
950 0.023040
951 0.028819
952 0.028844
953 0.035604
954 0.035627
955 0.029876
956 0.031830
957 0.027995
958 0.028013
959 0.027066
960 0.037728
961 0.039689
962 0.036818
963 0.030052
964 0.032011
965 0.027172
966 0.028167
967 0.028176
968 0.031117
969 0.039878
970 0.036991
971 0.037011
972 0.032167
973 0.040957
974 0.033178
975 0.036118
976 0.041998
977 0.049833
978 0.048900
979 0.041098
980 0.045052
981 0.042110
982 0.042109
983 0.049013
984 0.053953
985 0.064758
986 0.078539
987 0.089380
988 0.106132
989 0.122856
990 0.133794
991 0.133773
992 0.130936
993 0.127022
994 0.118217
995 0.105428
996 0.095648
997 0.086778
998 0.077942
999 0.072034
1000 0.069112
1001 0.069121
1002 0.066206
1003 0.058310
1004 0.060312
1005 0.055370
1006 0.054418
1007 0.054432
1008 0.060386
1009 0.063375
1010 0.061410
1011 0.057460
1012 0.059478
1013 0.056516
1014 0.059516
1015 0.060519
1016 0.068465
1017 0.065503
1018 0.066529
1019 0.061583
1020 0.066559
1021 0.065588
1022 0.068569
1023 0.064617
1024 0.073578
1025 0.076590
1026 0.073625
1027 0.068674
1028 0.068685
1029 0.071704
1030 0.070700
1031 0.068743
1032 0.075704
1033 0.074739
1034 0.076747
1035 0.075789
1036 0.074798
1037 0.071821
1038 0.071826
1039 0.075873
1040 0.078853
1041 0.092873
1042 0.097864
1043 0.098908
1044 0.088928
1045 0.090014
1046 0.099961
1047 0.095030
1048 0.107030
1049 0.123132
1050 0.119094
1051 0.115160
1052 0.109155
1053 0.112217
1054 0.116225
1055 0.121281
1056 0.129275
1057 0.147413
1058 0.154470
1059 0.136489
1060 0.129421
1061 0.144596
1062 0.140544
1063 0.136612
1064 0.152666
1065 0.170861
1066 0.170856
1067 0.160856
1068 0.158909
1069 0.156938
1070 0.173052
1071 0.168082
1072 0.176134
1073 0.193318
1074 0.199402
1075 0.182349
1076 0.189455
1077 0.175375
1078 0.182474
1079 0.186614
1080 0.219816
1081 0.226009
1082 0.225023
1083 0.186703
1084 0.186772
1085 0.207010
1086 0.194979
1087 0.202024
1088 0.211169
1089 0.250652
1090 0.269760
1091 0.251635
1092 0.217358
1093 0.227496
1094 0.230606
1095 0.242613
1096 0.265163
1097 0.278309
1098 0.284358
1099 0.286382
1100 0.270235

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



 

More Narrow Bandpass Filters

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Ringstraße 132
55543 Bad Kreuznach | Germany
+49 (0) 671 601 0

 

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