de gb
de gb

LP 850 HT 
Longpass Filter



Key features

  • Average transmittance 95%
  • Steep slopes
  • Ultra low reflection
  • Deep blocking / High optical density
Request quote
Schneider-Kreuznach Longpass Filter LP 850 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 850 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 850 HT Longpass Filter

TypeOn request
Characteristicsinterference
Angle of indcident0° +/- 8°
Cut-on wavelength850 +/- 9 nm
Transmittance875 - 1050 nm: Tabs > 90%
875 - 1050 nm: Tave > 95%
Blocking< 800 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 850 HT



Transmission of the LP 850 HT Filter


 

Transmission Data

 

Download Excel

Wavelength (nm) Transmission (%)
350 0.01
351 0.02
352 0.04
353 0.05
354 0.06
355 0.05
356 0.03
357 0.02
358 0.03
359 0.03
360 0.02
361 0.01
362 0.01
363 0.00
364 0.01
365 0.03
366 0.03
367 0.02
368 0.03
369 0.06
370 0.08
371 0.06
372 0.05
373 0.07
374 0.05
375 0.03
376 0.04
377 0.07
378 0.05
379 0.00
380 0.00
381 0.00
382 0.00
383 0.00
384 0.00
385 0.00
386 0.01
387 0.00
388 0.00
389 0.00
390 0.02
391 0.04
392 0.02
393 0.01
394 0.01
395 0.00
396 0.01
397 0.01
398 0.03
399 0.02
400 0.01
401 0.01
402 0.01
403 0.03
404 0.09
405 0.09
406 0.04
407 0.02
408 0.02
409 0.03
410 0.04
411 0.02
412 0.01
413 0.01
414 0.01
415 0.02
416 0.05
417 0.04
418 0.01
419 0.00
420 0.00
421 0.00
422 0.00
423 0.00
424 0.01
425 0.01
426 0.01
427 0.00
428 0.00
429 0.00
430 0.02
431 0.03
432 0.05
433 0.04
434 0.03
435 0.03
436 0.04
437 0.06
438 0.11
439 0.23
440 0.43
441 0.56
442 0.52
443 0.40
444 0.30
445 0.26
446 0.25
447 0.28
448 0.35
449 0.38
450 0.32
451 0.21
452 0.13
453 0.09
454 0.07
455 0.07
456 0.07
457 0.08
458 0.11
459 0.15
460 0.20
461 0.25
462 0.28
463 0.28
464 0.28
465 0.29
466 0.32
467 0.37
468 0.43
469 0.49
470 0.50
471 0.44
472 0.34
473 0.24
474 0.17
475 0.12
476 0.09
477 0.08
478 0.08
479 0.10
480 0.16
481 0.27
482 0.28
483 0.15
484 0.06
485 0.02
486 0.01
487 0.01
488 0.01
489 0.01
490 0.01
491 0.01
492 0.00
493 0.00
494 0.00
495 0.01
496 0.01
497 0.01
498 0.02
499 0.03
500 0.04
501 0.06
502 0.06
503 0.05
504 0.03
505 0.03
506 0.03
507 0.04
508 0.07
509 0.15
510 0.22
511 0.16
512 0.06
513 0.03
514 0.02
515 0.01
516 0.01
517 0.01
518 0.00
519 0.00
520 0.00
521 0.01
522 0.01
523 0.01
524 0.01
525 0.01
526 0.03
527 0.06
528 0.11
529 0.14
530 0.11
531 0.06
532 0.04
533 0.03
534 0.02
535 0.02
536 0.02
537 0.02
538 0.02
539 0.02
540 0.02
541 0.03
542 0.03
543 0.04
544 0.05
545 0.06
546 0.07
547 0.08
548 0.09
549 0.11
550 0.13
551 0.15
552 0.15
553 0.15
554 0.12
555 0.09
556 0.07
557 0.05
558 0.04
559 0.03
560 0.03
561 0.03
562 0.02
563 0.02
564 0.02
565 0.02
566 0.02
567 0.02
568 0.02
569 0.03
570 0.03
571 0.04
572 0.04
573 0.06
574 0.08
575 0.11
576 0.16
577 0.26
578 0.38
579 0.50
580 0.52
581 0.43
582 0.31
583 0.22
584 0.16
585 0.12
586 0.10
587 0.08
588 0.07
589 0.06
590 0.05
591 0.05
592 0.05
593 0.05
594 0.05
595 0.05
596 0.05
597 0.05
598 0.06
599 0.07
600 0.08
601 0.09
602 0.12
603 0.15
604 0.21
605 0.29
606 0.39
607 0.45
608 0.43
609 0.33
610 0.22
611 0.15
612 0.10
613 0.07
614 0.05
615 0.04
616 0.03
617 0.03
618 0.02
619 0.02
620 0.01
621 0.01
622 0.01
623 0.01
624 0.01
625 0.01
626 0.01
627 0.01
628 0.01
629 0.01
630 0.01
631 0.02
632 0.02
633 0.03
634 0.06
635 0.11
636 0.23
637 0.30
638 0.20
639 0.09
640 0.04
641 0.02
642 0.02
643 0.01
644 0.01
645 0.00
646 0.00
647 0.00
648 0.00
649 0.00
650 0.00
651 0.00
652 0.00
653 0.00
654 0.00
655 0.00
656 0.00
657 0.00
658 0.00
659 0.00
660 0.00
661 0.00
662 0.00
663 0.00
664 0.00
665 0.00
666 0.00
667 0.00
668 0.00
669 0.00
670 0.00
671 0.00
672 0.00
673 0.00
674 0.00
675 0.00
676 0.00
677 0.00
678 0.00
679 0.00
680 0.00
681 0.00
682 0.00
683 0.00
684 0.01
685 0.04
686 0.04
687 0.04
688 0.04
689 0.04
690 0.04
691 0.04
692 0.04
693 0.04
694 0.04
695 0.04
696 0.04
697 0.04
698 0.04
699 0.04
700 0.04
701 0.04
702 0.04
703 0.04
704 0.04
705 0.05
706 0.05
707 0.05
708 0.05
709 0.05
710 0.05
711 0.05
712 0.05
713 0.05
714 0.04
715 0.04
716 0.04
717 0.04
718 0.04
719 0.04
720 0.04
721 0.04
722 0.04
723 0.04
724 0.04
725 0.04
726 0.04
727 0.04
728 0.04
729 0.04
730 0.04
731 0.04
732 0.04
733 0.04
734 0.04
735 0.04
736 0.04
737 0.04
738 0.04
739 0.04
740 0.04
741 0.04
742 0.04
743 0.04
744 0.04
745 0.04
746 0.04
747 0.04
748 0.04
749 0.04
750 0.05
751 0.05
752 0.05
753 0.05
754 0.05
755 0.05
756 0.05
757 0.06
758 0.06
759 0.06
760 0.06
761 0.07
762 0.07
763 0.07
764 0.07
765 0.07
766 0.08
767 0.08
768 0.08
769 0.08
770 0.08
771 0.08
772 0.08
773 0.08
774 0.09
775 0.09
776 0.09
777 0.09
778 0.09
779 0.09
780 0.09
781 0.09
782 0.10
783 0.10
784 0.10
785 0.11
786 0.11
787 0.11
788 0.12
789 0.12
790 0.13
791 0.13
792 0.14
793 0.15
794 0.16
795 0.18
796 0.22
797 0.23
798 0.24
799 0.25
800 0.27
801 0.29
802 0.31
803 0.33
804 0.36
805 0.38
806 0.41
807 0.44
808 0.48
809 0.51
810 0.55
811 0.59
812 0.63
813 0.68
814 0.72
815 0.78
816 0.83
817 0.90
818 0.96
819 1.04
820 1.12
821 1.21
822 1.31
823 1.42
824 1.55
825 1.70
826 1.87
827 2.06
828 2.28
829 2.54
830 2.84
831 3.19
832 3.59
833 4.06
834 4.61
835 5.26
836 6.01
837 6.89
838 7.91
839 9.11
840 10.48
841 12.09
842 13.90
843 15.98
844 18.30
845 20.90
846 23.74
847 26.84
848 30.10
849 33.56
850 37.12
851 40.77
852 44.50
853 48.22
854 51.97
855 55.70
856 59.47
857 63.14
858 66.81
859 70.41
860 73.93
861 77.27
862 80.49
863 83.45
864 86.15
865 88.58
866 90.66
867 92.34
868 93.69
869 94.66
870 95.27
871 95.55
872 95.57
873 95.37
874 95.02
875 94.54
876 93.99
877 93.43
878 92.84
879 92.34
880 91.87
881 91.50
882 91.22
883 91.00
884 90.91
885 90.89
886 91.03
887 91.13
888 91.39
889 91.67
890 92.06
891 92.37
892 92.82
893 93.14
894 93.62
895 93.92
896 94.40
897 94.73
898 95.10
899 95.31
900 95.70
901 95.81
902 96.09
903 96.14
904 96.40
905 96.43
906 96.56
907 96.62
908 96.64
909 96.66
910 96.73
911 96.71
912 96.76
913 96.74
914 96.74
915 96.72
916 96.69
917 96.65
918 96.61
919 96.57
920 96.52
921 96.45
922 96.41
923 96.29
924 96.23
925 96.06
926 96.01
927 95.82
928 95.75
929 95.60
930 95.47
931 95.25
932 95.21
933 95.02
934 94.98
935 94.82
936 94.81
937 94.68
938 94.68
939 94.60
940 94.52
941 94.48
942 94.62
943 94.58
944 94.64
945 94.65
946 94.76
947 94.75
948 94.85
949 94.89
950 95.03
951 95.07
952 95.20
953 95.22
954 95.32
955 95.32
956 95.43
957 95.39
958 95.43
959 95.36
960 95.38
961 95.35
962 95.35
963 95.23
964 95.22
965 95.14
966 95.09
967 94.94
968 94.92
969 94.82
970 94.74
971 94.63
972 94.62
973 94.56
974 94.52
975 94.47
976 94.45
977 94.45
978 94.43
979 94.46
980 94.47
981 94.50
982 94.54
983 94.62
984 94.67
985 94.77
986 94.87
987 94.96
988 95.04
989 95.15
990 95.23
991 95.35
992 95.41
993 95.50
994 95.59
995 95.64
996 95.68
997 95.80
998 95.82
999 95.88
1000 95.89
1001 95.96
1002 95.98
1003 96.00
1004 96.01
1005 96.11
1006 96.09
1007 96.18
1008 96.15
1009 96.20
1010 96.24
1011 96.33
1012 96.36
1013 96.49
1014 96.53
1015 96.64
1016 96.71
1017 96.86
1018 96.94
1019 97.10
1020 97.22
1021 97.42
1022 97.51
1023 97.69
1024 97.84
1025 97.97
1026 98.11
1027 98.30
1028 98.40
1029 98.59
1030 98.63
1031 98.79
1032 98.89
1033 98.96
1034 98.94
1035 99.03
1036 99.01
1037 98.96
1038 99.00
1039 98.96
1040 98.83
1041 98.70
1042 98.60
1043 98.46
1044 98.30
1045 98.12
1046 97.92
1047 97.68
1048 97.49
1049 97.22
1050 97.07
1051 96.76
1052 96.57
1053 96.28
1054 96.04
1055 95.85
1056 95.67
1057 95.45
1058 95.31
1059 95.04
1060 94.99
1061 94.76
1062 94.69
1063 94.57
1064 94.51
1065 94.37
1066 94.40
1067 94.33
1068 94.43
1069 94.41
1070 94.45
1071 94.47
1072 94.60
1073 94.67
1074 94.78
1075 94.90
1076 95.06
1077 95.18
1078 95.32
1079 95.45
1080 95.65
1081 95.81
1082 96.02
1083 96.15
1084 96.31
1085 96.45
1086 96.65
1087 96.79
1088 96.97
1089 97.09
1090 97.27
1091 97.37
1092 97.44
1093 97.63
1094 97.71
1095 97.72
1096 97.87
1097 97.95
1098 97.98
1099 98.04
1100 98.12

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 Longpass Filters


Do you have any questions or comments? Then please contact us. We will get back to you as soon as possible. To help us process your request, please fill out all fields marked with *.

Required
Required
Required
Required
Required
Required
Required
Required

The data will not pass on to third parties. This is about our privacy.

Completely free of charge and without obligation. I am aware that my data/ usage behavior is stored electronically. You can unsubscribe this service at any time in any newsletter, or your consent to the Jos. Schneider Optische Werke GmbH.

HEADQUARTERS - Europe

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

 

BUSINESS UNITS

Business Unit Industry
+49 (0) 671 601 205
isales@schneiderkreuznach.com

Business Unit Photo/ Cine
+49 (0) 671 601 551

B+W belongs to the Photo division
photo@schneiderkreuznach.com
cine@schneiderkreuznach.com

 

OFFICES WORLDWIDE

America
+1 800 645 7239 (East Coast)
+1 800 228 1254 (West Coast)

Asia
+86 755 8832 1170

Singapore
+65 9488 0062

Exhibitions & Events

Visit us at any tradeshow or event we attend worldwide! Come with your challenge and let our experts help you find the perfect solution for your apllication.

Newsroom

Stay up-to-date on all the latest news, product releases, and more.

Distribution

Get in touch with our specialist. Find a partner near to you.