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LP 430 HT 
Longpass Filter



Key features

  • Average transmittance 95%
  • Steep slopes
  • Ultra low reflection
  • Deep blocking / High optical density
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Schneider-Kreuznach Longpass Filter LP 430 HT

Schneider-Kreuznach longpass filters deliver high transmission and precise cutoff performance for use in industrial and machine vision applications. Thanks to their steep slopes, flat surfaces, and robust AR coatings, these filters ensure accurate results and minimal reflections even under demanding conditions. 

The Schneider-Kreuznach LP 430 HT magnetron sputtered industrial longpass filter features steep slopes and high transmission at stable cut-on wavelengths. The very flat surface makes it ideal for high end machine vision systems in factory automation. All longpass filters come with superior antireflection coating. Schneider-Kreuznach longpass filters are RoHS conform. Custom sizes are available on request.

Downloads

Technical specifications: LP 430 HT Longpass Filter

TypeStandard
Characteristicsinterference
Angle of indcident0° +/- 8°
Cut-on wavelength430 +/- 5nm
Transmittance445 - 950 nm: Tabs > 90%
445 - 950 nm: Tave > 95%
Blocking< 400 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 Longpass Filter LP 430 HT



Transmission of the LP 430 HT Filter


 

Transmission Data

 

Download Excel

Wavelength (nm) Transmission (%)
350 0.02
351 0.03
352 0.03
353 0.04
354 0.04
355 0.02
356 0.02
357 0.03
358 0.02
359 0.02
360 0.02
361 0.05
362 0.04
363 0.02
364 0.02
365 0.02
366 0.02
367 0.02
368 0.03
369 0.04
370 0.04
371 0.02
372 0.03
373 0.02
374 0.04
375 0.01
376 0.04
377 0.07
378 0.05
379 0.04
380 0.04
381 0.04
382 0.03
383 0.05
384 -0.01
385 0.23
386 0.25
387 0.24
388 0.24
389 0.24
390 0.24
391 0.24
392 0.24
393 0.25
394 0.25
395 0.25
396 0.25
397 0.25
398 0.26
399 0.27
400 0.28
401 0.30
402 0.32
403 0.33
404 0.35
405 0.38
406 0.42
407 0.46
408 0.52
409 0.59
410 0.68
411 0.78
412 0.91
413 1.07
414 1.27
415 1.52
416 1.85
417 2.26
418 2.78
419 3.46
420 4.29
421 5.45
422 6.94
423 8.84
424 11.31
425 14.50
426 18.57
427 23.71
428 30.14
429 37.61
430 46.15
431 55.43
432 64.94
433 73.68
434 81.30
435 87.32
436 91.91
437 94.86
438 96.64
439 97.49
440 97.95
441 97.98
442 97.84
443 97.73
444 97.53
445 97.38
446 97.30
447 97.28
448 97.27
449 97.35
450 97.36
451 97.46
452 97.49
453 97.60
454 97.60
455 97.65
456 97.64
457 97.67
458 97.59
459 97.62
460 97.55
461 97.56
462 97.47
463 97.49
464 97.42
465 97.44
466 97.40
467 97.48
468 97.42
469 97.49
470 97.49
471 97.59
472 97.60
473 97.66
474 97.69
475 97.78
476 97.78
477 97.86
478 97.87
479 97.94
480 97.95
481 98.00
482 97.99
483 98.02
484 97.99
485 98.01
486 98.00
487 97.98
488 97.93
489 97.91
490 97.88
491 97.84
492 97.83
493 97.78
494 97.72
495 97.70
496 97.67
497 97.65
498 97.65
499 97.62
500 97.63
501 97.58
502 97.58
503 97.59
504 97.61
505 97.62
506 97.63
507 97.65
508 97.69
509 97.71
510 97.76
511 97.73
512 97.78
513 97.82
514 97.83
515 97.84
516 97.91
517 97.90
518 97.92
519 97.92
520 97.95
521 97.96
522 97.97
523 97.97
524 97.96
525 97.93
526 97.95
527 97.89
528 97.91
529 97.86
530 97.87
531 97.80
532 97.79
533 97.74
534 97.73
535 97.65
536 97.66
537 97.61
538 97.57
539 97.53
540 97.51
541 97.46
542 97.46
543 97.43
544 97.38
545 97.37
546 97.35
547 97.32
548 97.30
549 97.28
550 97.27
551 97.27
552 97.27
553 97.26
554 97.24
555 97.25
556 97.26
557 97.28
558 97.25
559 97.28
560 97.30
561 97.32
562 97.30
563 97.33
564 97.34
565 97.38
566 97.39
567 97.41
568 97.43
569 97.45
570 97.43
571 97.47
572 97.47
573 97.51
574 97.50
575 97.57
576 97.51
577 97.54
578 97.46
579 97.57
580 97.51
581 97.58
582 97.48
583 97.56
584 97.49
585 97.54
586 97.49
587 97.53
588 97.49
589 97.51
590 97.46
591 97.47
592 97.45
593 97.45
594 97.44
595 97.44
596 97.41
597 97.43
598 97.38
599 97.39
600 97.39
601 97.39
602 97.36
603 97.36
604 97.35
605 97.35
606 97.36
607 97.36
608 97.38
609 97.37
610 97.36
611 97.37
612 97.38
613 97.41
614 97.39
615 97.43
616 97.43
617 97.48
618 97.47
619 97.51
620 97.53
621 97.55
622 97.58
623 97.60
624 97.63
625 97.65
626 97.67
627 97.73
628 97.74
629 97.77
630 97.81
631 97.84
632 97.88
633 97.91
634 97.92
635 97.96
636 97.97
637 98.03
638 98.04
639 98.09
640 98.09
641 98.12
642 98.10
643 98.18
644 98.17
645 98.22
646 98.23
647 98.26
648 98.24
649 98.26
650 98.27
651 98.28
652 98.28
653 98.31
654 98.29
655 98.29
656 98.30
657 98.28
658 98.26
659 98.28
660 98.27
661 98.25
662 98.22
663 98.23
664 98.21
665 98.19
666 98.18
667 98.16
668 98.12
669 98.12
670 98.07
671 98.06
672 98.01
673 98.00
674 97.97
675 97.96
676 97.90
677 97.89
678 97.88
679 97.82
680 97.83
681 97.79
682 97.75
683 97.71
684 97.67
685 97.67
686 97.65
687 97.60
688 97.58
689 97.57
690 97.51
691 97.49
692 97.47
693 97.45
694 97.42
695 97.42
696 97.37
697 97.38
698 97.36
699 97.37
700 97.36
701 97.35
702 97.33
703 97.33
704 97.35
705 97.32
706 97.33
707 97.34
708 97.33
709 97.37
710 97.40
711 97.39
712 97.39
713 97.41
714 97.41
715 97.44
716 97.45
717 97.47
718 97.50
719 97.51
720 97.53
721 97.56
722 97.57
723 97.60
724 97.64
725 97.65
726 97.68
727 97.70
728 97.75
729 97.76
730 97.77
731 97.81
732 97.83
733 97.87
734 97.90
735 97.94
736 97.96
737 97.98
738 98.03
739 98.06
740 98.08
741 98.10
742 98.15
743 98.15
744 98.19
745 98.21
746 98.25
747 98.26
748 98.29
749 98.32
750 98.33
751 98.35
752 98.36
753 98.38
754 98.41
755 98.43
756 98.43
757 98.46
758 98.48
759 98.47
760 98.51
761 98.50
762 98.52
763 98.53
764 98.53
765 98.55
766 98.51
767 98.55
768 98.53
769 98.54
770 98.55
771 98.54
772 98.51
773 98.54
774 98.51
775 98.50
776 98.49
777 98.49
778 98.47
779 98.48
780 98.46
781 98.46
782 98.42
783 98.40
784 98.39
785 98.38
786 98.37
787 98.36
788 98.30
789 98.32
790 98.28
791 98.28
792 98.25
793 98.23
794 98.21
795 98.20
796 98.17
797 98.14
798 98.10
799 98.11
800 98.07
801 98.04
802 98.01
803 98.02
804 98.00
805 97.96
806 97.93
807 97.91
808 97.89
809 97.87
810 97.83
811 97.83
812 97.81
813 97.78
814 97.77
815 97.78
816 97.73
817 97.72
818 97.70
819 97.68
820 97.66
821 97.65
822 97.66
823 97.64
824 97.62
825 97.59
826 97.59
827 97.61
828 97.58
829 97.60
830 97.58
831 97.56
832 97.55
833 97.57
834 97.56
835 97.57
836 97.58
837 97.55
838 97.53
839 97.54
840 97.54
841 97.55
842 97.58
843 97.57
844 97.60
845 97.59
846 97.60
847 97.60
848 97.60
849 97.60
850 97.63
851 97.64
852 97.66
853 97.64
854 97.67
855 97.71
856 97.68
857 97.71
858 97.72
859 97.74
860 97.75
861 97.78
862 97.77
863 97.83
864 97.82
865 97.84
866 97.89
867 97.87
868 97.87
869 97.92
870 97.91
871 97.96
872 97.99
873 97.99
874 98.01
875 98.01
876 98.02
877 98.07
878 98.09
879 98.12
880 98.13
881 98.14
882 98.16
883 98.16
884 98.17
885 98.18
886 98.23
887 98.15
888 98.25
889 98.24
890 98.30
891 98.21
892 98.31
893 98.29
894 98.36
895 98.28
896 98.34
897 98.35
898 98.40
899 98.31
900 98.34
901 98.29
902 98.37
903 98.34
904 98.39
905 98.37
906 98.38
907 98.34
908 98.31
909 98.35
910 98.36
911 98.34
912 98.32
913 98.32
914 98.30
915 98.27
916 98.32
917 98.27
918 98.27
919 98.26
920 98.23
921 98.19
922 98.23
923 98.15
924 98.18
925 98.12
926 98.14
927 98.05
928 98.08
929 98.04
930 98.04
931 97.96
932 97.99
933 97.90
934 97.94
935 97.84
936 97.89
937 97.79
938 97.80
939 97.72
940 97.69
941 97.61
942 97.65
943 97.57
944 97.58
945 97.49
946 97.50
947 97.39
948 97.42
949 97.32
950 97.31
951 97.23
952 97.23
953 97.16
954 97.13
955 97.04
956 97.05
957 96.96
958 96.95
959 96.89
960 96.86
961 96.79
962 96.73
963 96.67
964 96.67
965 96.58
966 96.53
967 96.47
968 96.44
969 96.38
970 96.34
971 96.25
972 96.22
973 96.16
974 96.15
975 96.07
976 96.01
977 95.98
978 95.90
979 95.84
980 95.84
981 95.75
982 95.71
983 95.65
984 95.59
985 95.56
986 95.47
987 95.45
988 95.36
989 95.36
990 95.29
991 95.25
992 95.16
993 95.16
994 95.08
995 95.05
996 94.98
997 94.95
998 94.91
999 94.90
1000 94.83
1001 94.83
1002 94.71
1003 94.68
1004 94.57
1005 94.60
1006 94.53
1007 94.54
1008 94.43
1009 94.39
1010 94.34
1011 94.35
1012 94.23
1013 94.27
1014 94.19
1015 94.19
1016 94.12
1017 94.12
1018 94.04
1019 94.05
1020 93.98
1021 93.97
1022 93.91
1023 93.88
1024 93.85
1025 93.83
1026 93.79
1027 93.78
1028 93.72
1029 93.69
1030 93.68
1031 93.66
1032 93.65
1033 93.57
1034 93.52
1035 93.54
1036 93.52
1037 93.50
1038 93.47
1039 93.41
1040 93.46
1041 93.42
1042 93.40
1043 93.37
1044 93.39
1045 93.33
1046 93.34
1047 93.25
1048 93.29
1049 93.24
1050 93.27
1051 93.21
1052 93.23
1053 93.17
1054 93.23
1055 93.15
1056 93.17
1057 93.18
1058 93.20
1059 93.12
1060 93.21
1061 93.07
1062 93.14
1063 93.07
1064 93.12
1065 93.09
1066 93.08
1067 93.02
1068 93.03
1069 93.03
1070 93.03
1071 93.02
1072 93.04
1073 93.00
1074 93.04
1075 93.00
1076 93.04
1077 93.02
1078 93.04
1079 93.01
1080 93.02
1081 93.00
1082 93.05
1083 92.99
1084 93.00
1085 92.98
1086 92.98
1087 92.98
1088 92.97
1089 93.02
1090 92.97
1091 92.93
1092 92.95
1093 92.93
1094 92.88
1095 92.94
1096 92.98
1097 92.98
1098 92.94
1099 92.94
1100 92.92

 

 

Mounted Industrial Filter [IF]


MountThicknessID
CMT2mm1091644
CMT1mmID to be defined
SH 25.52mm1085698
SH 25.51mmOn request only
SH 27.02mm1094891
SH 27.01mmOn request only
SN1 30.52mm1091135
SN1 30.51mmOn request only
SH 34.02mm1106989
SH 34.01mmOn request only
SH 35.52mm1091104
SH 35.51mmOn request only
SH 37.02mm1089824
SH 37.01mmOn request only
SH 39.02mm1104408
SH 40.52mm1087681
SH 43.02mm1097770
SH 46.02mm1095665
SH 49.02mm1095666

Order nomenclature
IF LP 430 HT [Mount] [Thickness]
Example: IF LP 430 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 mm2mm1082489
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 mm2mm1082490
46.0 mm2mmID to be defined

Order nomenclature
IFG LP 430 HT [Diameter] [Thickness]
Example: IFG LP 430 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 27.0 mm 20.8mm 6.4 mm
M 27.0x0.5 28.5 mm 21.8 mm 6.4 mm
M 34.0x0.5 36.0 mm 28.8 mm 6.4 mm
M 35.5x0.5 37.0 mm 30.8 mm 6.4 mm
M 37.0x0.75 39.0 mm 31.8 mm 6.9 mm
M 39.0x0.5 40.5 mm 33.8 mm 6.4 mm
M 40.5x0.5 42.0 mm 35.8 mm 6.4 mm
M 43.0x0.75 45.0 mm 37.8 mm 6.9 mm
M 46.0x0.75 48.0 mm 40.8 mm 6.9 mm
M 49.0x0.75 51.0 mm 43.8 mm 6.9 mm
M 52.0x0.75 54.0 mm 46.8 mm 6.9 mm
M 55.0x0.75 57.0 mm 49.8 mm 6.9 mm
M 58.0x0.75 60.0 mm 52.8 mm 6.9 mm
M 62.0x0.75 64.5 mm 56.8 mm 6.9 mm
M 67.0x0.75 69.5 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

 

SN2-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 27.5 mm 22.5 mm 7.4 mm
M 27.0x0.5 29.0 mm 24.0 mm 7.4 mm
M 30.5x0.5 32.5 mm 27.5 mm 7.4 mm
M 35.5 x0.5 37.5 mm 32.5 mm 7.4 mm
M 37.0x0.75 39.0 mm 34.0 mm 7.4 mm
M 40.5x0.5 42.5 mm 37.5 mm 7.4 mm
M 43.0x0.75 45.0 mm 40.0 mm 7.4 mm
M 46.0x0.75 48.0 mm 43.0 mm 7.4 mm
M 49.0x0.75 51.0 mm 46.0 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 28.0 mm 21.0 mm 9.2 mm
M 27.0x0.5 29.5 mm 22.0 mm 9.2 mm
M 30.5x0.5 33.0 mm 26.0 mm 9.2 mm
M 35.5 x0.5 38.0 mm 31.0 mm 9.2 mm
M 37.0x0.75 39.5 mm 31.5 mm 9.2 mm
M 40.5x0.5 43.0 mm 36.0 mm 9.2 mm
M 43.0x0.75 45.5 mm 37.5 mm 9.2 mm
M 46.0x0.75 48.5 mm 40.5 mm 9.2 mm
M 49.0x0.75 51.5 mm 43.5 mm 9.2 mm
M 52.0x0.75 54.5 mm 46.5 mm 9.2 mm
M 55.0x0.75 57.5 mm 49.5 mm 9.2 mm
M 58.0x0.75 60.5 mm 52.5 mm 9.2 mm
M 62.0x0.75 64.5 mm 56.5 mm 9.2 mm
M 67.0x0.75 69.5 mm 61.5 mm 9.2 mm

 

DH Filter-Mount



 

More Longpass Filters


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Jos. Schneider Optische Werke GmbH
Ringstraße 132
55543 Bad Kreuznach | Germany
+49 (0) 671 601 0

 

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isales@schneiderkreuznach.com

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