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Midwest Optical : LP900

By: Midwest Optical
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Optical Filters & Kits
Contact us for lowest price (800) 284-2288, (858) 565-1101, sales@avsupply.com, or fax (858) 300-4193
Near-IR Longpass

The Midwest Optical LP900 filters sharply block light below 900nm while allowing longer wavelengths to pass. This would be the filter of choice when viewing reflected 915nm laser diode light. These filters can also be used in infrared digital photography, as detector windows and in various scientific and forensic applications. For example, images of blood stains or gun shot residue on dark-colored fabrics or denim can often be enhanced by causing the fabric to appear white or comparatively much lighter when using a LP900 filter over the lens of a camera that has had its IR blocking filter removed.

Useful Range : 910-1100nm

Cut-on Wavelength 50% T : 900nm

Tolerance : +/- 10nm

Peak Transmission : ≥90%

Surface Quality : 40/20

wavelength
(nm)
transmission
(%)
1100 98.25
1090 98.13
1080 97.42
1070 96.46
1060 95.53
1050 94.77
1040 94.67
1030 95.22
1020 96.33
1010 97.48
1000 98.11
990 98.23
980 97.55
970 96.94
960 96.66
950 96.79
940 96.91
930 97.29
920 96.20
910 80.90
900 43.51
890 15.08
880 5.03
870 1.64
860 0.60
850 0.27
840 0.13
830 0.06
820 0.03
810 0.02
800 0.01
790 0.00
780 0.00
770 0.00
760 0.00
750 0.00
740 0.00
730 0.00
wavelength
(nm)
transmission
(%)
720 0.00
710 0.00
700 0.00
690 0.00
680 0.00
670 0.00
660 0.00
650 0.00
640 0.00
630 0.00
620 0.00
610 0.00
600 0.00
590 0.00
580 0.00
570 0.00
560 0.01
550 0.00
540 0.00
530 0.00
520 0.00
510 0.00
500 0.00
490 0.00
480 0.00
470 0.00
460 0.00
450 -0.01
440 0.01
430 0.00
420 0.00
410 -0.01
400 0.01
390 0.00
380 0.00
370 0.00
360 0.01
350 0.01


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Prices and specifications subject to change without notice.