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SP 790 HT 
Shortpass Filter



Key features

  • Average Transmittance 95%
  • Steep Slopes
  • Wavelength Tolerance +/- 1%
  • Ultra Low Refelction
  • Deep Blocking / High OD
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Schneider-Kreuznach Shortpass Filter SP 790 HT

Our Shortpass Filters impress with steep slopes and high transmission at stable cut-off wavelengths. The flat surface makes them ideal for machine vision.

The Schneider-Kreuznach SP 790 HT magnetron sputtered shortpass filter impress with steep slopes and high transmission at stable cut-off wavelengths. The very flat surface makes it ideal for high end machine vision systems in factory automation. Schneider-Kreuznach shortpass filters are RoHS conform. Custom sizes are available on request.

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Technical specifications: SP 790 HT Shortpass Filter

TypeStandard
CharacteristicInterference
Angle of incident0° +/- 8°
Cut-off wavelength790 +/- 8 nm
Transmittance425 - 775 nm: Tabs > 90%
425 - 775 nm: Tave > 95%
Blocking840 - 1050 nm: Tabs < 1.0%
1050 - 1100 nm: Tabs < 2.0%
Wavefront distortionØ >18 - 30 mm: 13/ 1(0.25) | Ø >30 - 50 mm: 13/ 1(0.30)
Parallelism1'
Glass thickness tolerance+/- 0.08mm
Angle of incident0° +/- 8°

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 Shortpass Filter SP 790 HT



Transmission of the SP 790 HT Filter


 

Transmission Data

 

Download Excel

Wavelength (nm) Transmission (%)
400 96.8116
401 96.2218
402 95.6688
403 95.325
404 95.1178
405 94.9177
406 94.707
407 94.5872
408 94.6552
409 94.898
410 95.2022
411 95.4438
412 95.6139
413 95.7704
414 95.9773
415 96.2385
416 96.498
417 96.7024
418 96.8677
419 97.0865
420 97.4654
421 98.0139
422 98.6623
423 99.2326
424 99.5496
425 99.5453
426 99.3048
427 99.0189
428 98.8783
429 98.9756
430 99.2633
431 99.572
432 99.7353
433 99.6467
434 99.3277
435 98.9168
436 98.5977
437 98.5126
438 98.7006
439 99.0826
440 99.4945
441 99.7538
442 99.757
443 99.5051
444 99.1079
445 98.7314
446 98.5269
447 98.572
448 98.8439
449 99.23
450 99.5716
451 99.7272
452 99.6395
453 99.346
454 98.9658
455 98.6492
456 98.5189
457 98.6264
458 98.9351
459 99.3335
460 99.675
461 99.8317
462 99.7508
463 99.4644
464 99.0787
465 98.7313
466 98.5409
467 98.5683
468 98.7985
469 99.1475
470 99.4911
471 99.7074
472 99.723
473 99.5364
474 99.2177
475 98.8804
476 98.6412
477 98.5819
478 98.7248
479 99.0273
480 99.3952
481 99.7089
482 99.8735
483 99.8365
484 99.6096
485 99.2638
486 98.9043
487 98.6373
488 98.5386
489 98.6342
490 98.895
491 99.2434
492 99.5806
493 99.8107
494 99.8687
495 99.7404
496 99.465
497 99.1221
498 98.8069
499 98.6041
500 98.5661
501 98.6989
502 98.9684
503 99.3055
504 99.6241
505 99.843
506 99.9069
507 99.8012
508 99.5549
509 99.231
510 98.9093
511 98.6685
512 98.5592
513 98.6035
514 98.7885
515 99.0703
516 99.384
517 99.6583
518 99.8315
519 99.8662
520 99.7572
521 99.5331
522 99.2443
523 98.9528
524 98.7177
525 98.5835
526 98.572
527 98.6802
528 98.8816
529 99.1328
530 99.3831
531 99.5844
532 99.7018
533 99.7199
534 99.6452
535 99.5033
536 99.3326
537 99.1746
538 99.0661
539 99.0312
540 99.078
541 99.195
542 99.3599
543 99.5383
544 99.6926
545 99.7893
546 99.8052
547 99.7323
548 99.5794
549 99.3695
550 99.1361
551 98.917
552 98.7448
553 98.6456
554 98.6335
555 98.7088
556 98.8588
557 99.0592
558 99.2784
559 99.4821
560 99.6386
561 99.7241
562 99.7267
563 99.647
564 99.4977
565 99.3015
566 99.0873
567 98.885
568 98.7218
569 98.6186
570 98.5874
571 98.6298
572 98.7389
573 98.8998
574 99.0921
575 99.2925
576 99.4786
577 99.6312
578 99.7372
579 99.7909
580 99.7941
581 99.7561
582 99.6905
583 99.6137
584 99.542
585 99.4896
586 99.4667
587 99.4779
588 99.5224
589 99.594
590 99.682
591 99.7724
592 99.8511
593 99.9044
594 99.9212
595 99.8945
596 99.8224
597 99.708
598 99.5592
599 99.3876
600 99.207
601 99.0322
602 98.8766
603 98.7516
604 98.6654
605 98.6223
606 98.6228
607 98.6631
608 98.7364
609 98.8331
610 98.9423
611 99.0519
612 99.1517
613 99.2326
614 99.2878
615 99.3136
616 99.3089
617 99.2757
618 99.2184
619 99.1432
620 99.057
621 98.9672
622 98.8804
623 98.8022
624 98.7367
625 98.686
626 98.6509
627 98.6303
628 98.622
629 98.623
630 98.6299
631 98.6394
632 98.6489
633 98.6566
634 98.6619
635 98.6649
636 98.6671
637 98.6707
638 98.6781
639 98.6922
640 98.7155
641 98.7495
642 98.7955
643 98.8533
644 98.9215
645 98.9978
646 99.0786
647 99.1599
648 99.2371
649 99.3056
650 99.3612
651 99.4004
652 99.4212
653 99.4225
654 99.4047
655 99.3699
656 99.321
657 99.2622
658 99.1983
659 99.134
660 99.0742
661 99.023
662 98.9835
663 98.9576
664 98.946
665 98.9479
666 98.9613
667 98.9829
668 99.0089
669 99.0346
670 99.0558
671 99.0684
672 99.0691
673 99.0559
674 99.0282
675 98.9868
676 98.9343
677 98.8744
678 98.8121
679 98.753
680 98.7032
681 98.6684
682 98.6538
683 98.6633
684 98.6996
685 98.7635
686 98.854
687 98.9679
688 99.1006
689 99.2455
690 99.3949
691 99.54
692 99.6725
693 99.7842
694 99.8678
695 99.9179
696 99.9307
697 99.9052
698 99.8427
699 99.7471
700 99.6245
701 99.4829
702 99.3316
703 99.1806
704 99.0399
705 98.9186
706 98.8248
707 98.7649
708 98.7427
709 98.76
710 98.8158
711 98.9062
712 99.0255
713 99.166
714 99.3181
715 99.4716
716 99.616
717 99.7409
718 99.8376
719 99.8991
720 99.9207
721 99.9006
722 99.8401
723 99.7432
724 99.6166
725 99.469
726 99.3104
727 99.1518
728 99.0036
729 98.8757
730 98.7763
731 98.7113
732 98.6842
733 98.6955
734 98.743
735 98.8219
736 98.9249
737 99.0425
738 99.1645
739 99.2797
740 99.3776
741 99.449
742 99.4871
743 99.4877
744 99.4502
745 99.3774
746 99.2759
747 99.155
748 99.0265
749 98.9035
750 98.7994
751 98.7267
752 98.6959
753 98.7142
754 98.7848
755 98.9059
756 99.0708
757 99.267
758 99.4771
759 99.6797
760 99.8502
761 99.9633
762 99.9953
763 99.9267
764 99.7447
765 99.4455
766 99.036
767 98.534
768 97.9676
769 97.3726
770 96.7898
771 96.2607
772 95.8207
773 95.4952
774 95.2914
775 95.1902
776 95.1361
777 95.0258
778 94.6983
779 93.9305
780 92.4477
781 89.9598
782 86.2201
783 81.1122
784 74.7209
785 67.3495
786 59.459
787 51.5536
788 44.0655
789 37.2877
790 31.3639
791 26.3189
792 22.0974
793 18.6056
794 15.7368
795 13.3872
796 11.4639
797 9.8877
798 8.5927
799 7.5253
800 6.6424
801 5.9098
802 5.2992
803 4.7884
804 4.3599
805 3.9993
806 3.6952
807 3.4383
808 3.2207
809 3.0361
810 2.8791
811 2.7447
812 2.6287
813 2.5271
814 2.4358
815 2.351
816 2.2686
817 2.1848
818 2.0956
819 1.9978
820 1.8891
821 1.7686
822 1.6371
823 1.4973
824 1.3528
825 1.2085
826 1.0686
827 0.937
828 0.8163
829 0.708
830 0.6124
831 0.5293
832 0.4577
833 0.3964
834 0.3442
835 0.3
836 0.2624
837 0.2306
838 0.2036
839 0.1806
840 0.1611
841 0.1444
842 0.1302
843 0.118
844 0.1075
845 0.0985
846 0.0907
847 0.0841
848 0.0783
849 0.0734
850 0.0691
851 0.0655
852 0.0624
853 0.0599
854 0.0578
855 0.0561
856 0.0548
857 0.0539
858 0.0534
859 0.0532
860 0.0535
861 0.0542
862 0.0553
863 0.0569
864 0.0591
865 0.0619
866 0.0654
867 0.0698
868 0.075
869 0.0812
870 0.0883
871 0.0959
872 0.1035
873 0.1098
874 0.1131
875 0.1118
876 0.105
877 0.0936
878 0.0798
879 0.0658
880 0.0531
881 0.0424
882 0.0339
883 0.0271
884 0.0218
885 0.0176
886 0.0144
887 0.0119
888 0.0099
889 0.0082
890 0.007
891 0.0059
892 0.005
893 0.0043
894 0.0038
895 0.0033
896 0.0029
897 0.0025
898 0.0022
899 0.002
900 0.0018
901 0.0016
902 0.0014
903 0.0013
904 0.0012
905 0.001
906 0.001
907 0.0009
908 0.0008
909 0.0007
910 0.0007
911 0.0006
912 0.0006
913 0.0005
914 0.0005
915 0.0005
916 0.0004
917 0.0004
918 0.0004
919 0.0004
920 0.0003
921 0.0003
922 0.0003
923 0.0003
924 0.0003
925 0.0003
926 0.0002
927 0.0002
928 0.0002
929 0.0002
930 0.0002
931 0.0002
932 0.0002
933 0.0002
934 0.0002
935 0.0002
936 0.0002
937 0.0002
938 0.0002
939 0.0002
940 0.0001
941 0.0001
942 0.0001
943 0.0001
944 0.0001
945 0.0001
946 0.0001
947 0.0001
948 0.0001
949 0.0001
950 0.0001
951 0.0001
952 0.0001
953 0.0001
954 0.0001
955 0.0001
956 0.0001
957 0.0001
958 0.0001
959 0.0001
960 0.0001
961 0.0001
962 0.0001
963 0.0001
964 0.0001
965 0.0001
966 0.0001
967 0.0001
968 0.0001
969 0.0001
970 0.0001
971 0.0001
972 0.0001
973 0.0001
974 0.0001
975 0.0001
976 0.0001
977 0.0001
978 0.0001
979 0.0001
980 0.0001
981 0.0001
982 0.0001
983 0.0001
984 0.0001
985 0.0001
986 0.0001
987 0.0001
988 0.0002
989 0.0002
990 0.0002
991 0.0002
992 0.0002
993 0.0002
994 0.0002
995 0.0002
996 0.0002
997 0.0002
998 0.0002
999 0.0002
1000 0.0002

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 Shortpass Filters


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

 

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