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LP 765 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 765 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 765 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 765 HT Longpass Filter

TypeStandard
Characteristicsinterference
Angle of indcident0° +/- 8°
Cut-on wavelength765 +/- 8 nm
Transmittance> 790 - 1000 nm: Tabs > 90%
> 790 - 1000 nm: Tave > 95%
Blocking< 710 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 765 HT



Transmission of the LP 765 HT Filter


 

Transmission Data

 

Download Excel

Wavelength (nm) Transmission (%)
350 0.01
351 0.02
352 0.02
353 0.02
354 0.01
355 0.01
356 0.00
357 0.00
358 0.00
359 0.01
360 0.00
361 0.00
362 0.00
363 0.00
364 0.00
365 0.00
366 0.01
367 0.03
368 0.06
369 0.05
370 0.02
371 0.01
372 0.01
373 0.01
374 0.03
375 0.05
376 0.05
377 0.03
378 0.02
379 0.01
380 0.00
381 0.01
382 0.03
383 0.01
384 0.01
385 0.01
386 0.01
387 0.01
388 0.02
389 0.02
390 0.01
391 0.00
392 0.00
393 0.01
394 0.01
395 0.00
396 0.00
397 0.00
398 0.00
399 0.00
400 0.00
401 0.01
402 0.02
403 0.03
404 0.02
405 0.01
406 0.01
407 0.01
408 0.01
409 0.02
410 0.04
411 0.04
412 0.02
413 0.01
414 0.00
415 0.00
416 0.00
417 0.00
418 0.00
419 0.00
420 0.00
421 0.00
422 0.00
423 0.00
424 0.00
425 0.00
426 0.01
427 0.00
428 0.01
429 0.01
430 0.02
431 0.03
432 0.05
433 0.09
434 0.12
435 0.12
436 0.11
437 0.09
438 0.07
439 0.07
440 0.06
441 0.06
442 0.05
443 0.05
444 0.04
445 0.04
446 0.04
447 0.04
448 0.05
449 0.06
450 0.07
451 0.09
452 0.12
453 0.15
454 0.17
455 0.16
456 0.14
457 0.11
458 0.08
459 0.06
460 0.05
461 0.04
462 0.03
463 0.03
464 0.03
465 0.03
466 0.04
467 0.04
468 0.04
469 0.04
470 0.04
471 0.04
472 0.04
473 0.04
474 0.04
475 0.05
476 0.06
477 0.07
478 0.09
479 0.11
480 0.12
481 0.12
482 0.10
483 0.07
484 0.05
485 0.03
486 0.02
487 0.02
488 0.01
489 0.01
490 0.01
491 0.01
492 0.00
493 0.00
494 0.00
495 0.00
496 0.01
497 0.01
498 0.01
499 0.00
500 0.01
501 0.01
502 0.01
503 0.01
504 0.02
505 0.03
506 0.04
507 0.06
508 0.10
509 0.11
510 0.09
511 0.05
512 0.03
513 0.02
514 0.01
515 0.01
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 0.01
530 0.01
531 0.01
532 0.01
533 0.01
534 0.01
535 0.01
536 0.01
537 0.01
538 0.01
539 0.01
540 0.01
541 0.01
542 0.01
543 0.01
544 0.01
545 0.01
546 0.01
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 0.01
561 0.01
562 0.01
563 0.01
564 0.02
565 0.02
566 0.02
567 0.02
568 0.01
569 0.01
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 0.00
630 0.00
631 0.00
632 0.00
633 0.00
634 0.00
635 0.00
636 0.00
637 0.00
638 0.00
639 0.00
640 0.00
641 0.00
642 0.00
643 0.00
644 0.00
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 0.01
680 0.01
681 0.01
682 0.01
683 0.01
684 0.01
685 0.02
686 0.03
687 0.03
688 0.03
689 0.04
690 0.05
691 0.05
692 0.06
693 0.07
694 0.08
695 0.09
696 0.11
697 0.12
698 0.14
699 0.16
700 0.17
701 0.19
702 0.21
703 0.22
704 0.24
705 0.26
706 0.27
707 0.29
708 0.30
709 0.32
710 0.34
711 0.36
712 0.38
713 0.40
714 0.43
715 0.45
716 0.48
717 0.51
718 0.55
719 0.58
720 0.63
721 0.67
722 0.72
723 0.78
724 0.83
725 0.90
726 0.97
727 1.05
728 1.14
729 1.23
730 1.34
731 1.45
732 1.58
733 1.72
734 1.87
735 2.05
736 2.24
737 2.46
738 2.70
739 2.96
740 3.27
741 3.61
742 3.99
743 4.42
744 4.90
745 5.44
746 6.06
747 6.75
748 7.53
749 8.40
750 9.39
751 10.50
752 11.76
753 13.17
754 14.74
755 16.49
756 18.43
757 20.60
758 23.00
759 25.66
760 28.55
761 31.70
762 35.04
763 38.62
764 42.45
765 46.49
766 50.65
767 54.84
768 59.09
769 63.26
770 67.27
771 71.14
772 74.76
773 78.16
774 81.27
775 84.13
776 86.52
777 88.67
778 90.52
779 92.10
780 93.38
781 94.55
782 95.46
783 96.19
784 96.74
785 97.22
786 97.55
787 97.86
788 98.09
789 98.25
790 98.41
791 98.50
792 98.59
793 98.61
794 98.61
795 98.65
796 98.76
797 98.70
798 98.65
799 98.60
800 98.51
801 98.40
802 98.32
803 98.21
804 98.10
805 97.99
806 97.86
807 97.76
808 97.65
809 97.55
810 97.46
811 97.39
812 97.25
813 97.21
814 97.14
815 97.10
816 97.06
817 97.03
818 97.03
819 97.04
820 97.05
821 97.11
822 97.19
823 97.21
824 97.29
825 97.35
826 97.42
827 97.52
828 97.61
829 97.75
830 97.84
831 97.92
832 98.04
833 98.15
834 98.26
835 98.36
836 98.44
837 98.50
838 98.54
839 98.63
840 98.65
841 98.70
842 98.70
843 98.69
844 98.68
845 98.68
846 98.65
847 98.62
848 98.57
849 98.49
850 98.42
851 98.34
852 98.28
853 98.20
854 98.12
855 98.05
856 97.91
857 97.86
858 97.77
859 97.71
860 97.65
861 97.61
862 97.54
863 97.48
864 97.46
865 97.39
866 97.39
867 97.39
868 97.40
869 97.40
870 97.41
871 97.47
872 97.48
873 97.53
874 97.56
875 97.64
876 97.67
877 97.75
878 97.82
879 97.93
880 98.01
881 98.04
882 98.19
883 98.18
884 98.32
885 98.31
886 98.44
887 98.43
888 98.56
889 98.54
890 98.70
891 98.59
892 98.74
893 98.65
894 98.79
895 98.66
896 98.75
897 98.65
898 98.76
899 98.63
900 98.67
901 98.51
902 98.58
903 98.46
904 98.48
905 98.37
906 98.39
907 98.22
908 98.19
909 98.10
910 98.10
911 98.01
912 98.00
913 97.93
914 97.91
915 97.83
916 97.81
917 97.82
918 97.81
919 97.78
920 97.72
921 97.74
922 97.76
923 97.81
924 97.81
925 97.78
926 97.89
927 97.88
928 97.99
929 98.00
930 98.10
931 98.07
932 98.20
933 98.18
934 98.39
935 98.36
936 98.49
937 98.47
938 98.61
939 98.64
940 98.77
941 98.70
942 98.89
943 98.84
944 98.97
945 98.94
946 99.00
947 98.97
948 99.08
949 99.03
950 99.14
951 99.06
952 99.09
953 99.03
954 99.06
955 98.99
956 99.01
957 98.91
958 98.92
959 98.82
960 98.81
961 98.71
962 98.70
963 98.58
964 98.55
965 98.45
966 98.40
967 98.32
968 98.22
969 98.14
970 98.10
971 98.01
972 97.90
973 97.85
974 97.81
975 97.74
976 97.69
977 97.61
978 97.55
979 97.52
980 97.48
981 97.46
982 97.40
983 97.38
984 97.39
985 97.37
986 97.38
987 97.41
988 97.39
989 97.42
990 97.41
991 97.48
992 97.47
993 97.52
994 97.53
995 97.63
996 97.61
997 97.71
998 97.67
999 97.79
1000 97.73
1001 97.85
1002 97.85
1003 97.95
1004 97.90
1005 97.94
1006 97.96
1007 98.04
1008 97.95
1009 97.97
1010 97.94
1011 98.03
1012 97.87
1013 97.93
1014 97.79
1015 97.79
1016 97.66
1017 97.65
1018 97.49
1019 97.46
1020 97.32
1021 97.24
1022 97.04
1023 96.96
1024 96.76
1025 96.62
1026 96.42
1027 96.27
1028 96.04
1029 95.89
1030 95.61
1031 95.41
1032 95.14
1033 94.97
1034 94.74
1035 94.48
1036 94.20
1037 93.96
1038 93.75
1039 93.46
1040 93.23
1041 92.97
1042 92.74
1043 92.41
1044 92.18
1045 91.90
1046 91.67
1047 91.38
1048 91.24
1049 90.95
1050 90.82
1051 90.52
1052 90.34
1053 90.06
1054 89.94
1055 89.68
1056 89.53
1057 89.31
1058 89.21
1059 88.95
1060 88.88
1061 88.68
1062 88.58
1063 88.38
1064 88.35
1065 88.16
1066 88.13
1067 87.95
1068 87.92
1069 87.79
1070 87.86
1071 87.63
1072 87.63
1073 87.53
1074 87.54
1075 87.48
1076 87.53
1077 87.40
1078 87.45
1079 87.39
1080 87.48
1081 87.41
1082 87.41
1083 87.34
1084 87.46
1085 87.44
1086 87.38
1087 87.43
1088 87.46
1089 87.44
1090 87.45
1091 87.51
1092 87.51
1093 87.54
1094 87.49
1095 87.49
1096 87.49
1097 87.53
1098 87.46
1099 87.48
1100 87.46


 

Mounted Industrial Filter [IF]


MountThicknessID
CMT2mm1097873
CMT1mmID to be defined
SH 25.52mm1099647
SH 25.51mmOn request only
SH 27.02mm1098705
SH 27.01mmOn request only
SN1 30.52mm1085795
SN1 30.51mmOn request only
SH 34.02mm1106990
SH 34.01mmOn request only
SH 35.52mm1086473
SH 35.51mmOn request only
SH 37.02mm1085796
SH 37.01mmOn request only
SH 39.02mm1106991
SH 40.52mm1087682
SH 43.02mm1106992
SH 46.02mm1086640
SH 49.02mm1106993

Order nomenclature
IF LP 765 HT [Mount] [Thickness]
Example: IF LP 765 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 mm2mm1085347
34.0 mm1mm1106586
36.0 mm2mmID to be defined
38.0 mm2mmID to be defined
40.0 mm2mmID to be defined
43.0 mm2mm1085348
46.0 mm2mmID to be defined

Order nomenclature
IFG LP 765 HT [Diameter] [Thickness]
Example: IFG LP 765 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



 

More Longpass Filters


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+49 (0) 671 601 0

 

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