#681C1F LP645 Dark Red Longpass Filter
Recommended for night vision applications using a filtered broadband light source; incorporating a LP645 filter blocks most visible light while passing deep red and NIR wavelengths. To block longer wavelengths including the infrared, see our BP660 or BP695 Bandpass filters.
StablEDGE- Useful Range : 650-1100nm
- Cut-on Wavelength 50% T : 645nm
- Tolerance : +/- 10nm
- Peak Transmission : ≥90%
- Surface Quality : 40/20
LP645 Transmission Data (Typical)
wavelength (nm) |
transmission (%) |
---|---|
1100 | 96.20 |
1090 | 96.45 |
1080 | 96.63 |
1070 | 96.86 |
1060 | 97.06 |
1050 | 97.21 |
1040 | 97.41 |
1030 | 97.57 |
1020 | 97.72 |
1010 | 97.89 |
1000 | 98.03 |
990 | 98.15 |
980 | 98.25 |
970 | 98.36 |
960 | 98.50 |
950 | 98.55 |
940 | 98.63 |
930 | 98.63 |
920 | 98.82 |
910 | 98.81 |
900 | 98.85 |
890 | 98.96 |
880 | 98.90 |
870 | 98.96 |
860 | 99.07 |
850 | 98.76 |
840 | 99.03 |
830 | 98.96 |
820 | 99.14 |
810 | 99.02 |
800 | 98.78 |
790 | 99.22 |
780 | 99.20 |
770 | 99.15 |
760 | 98.87 |
750 | 98.76 |
740 | 98.82 |
730 | 98.83 |
wavelength (nm) |
transmission (%) |
---|---|
720 | 98.74 |
710 | 98.60 |
700 | 98.50 |
690 | 98.10 |
680 | 97.38 |
670 | 95.26 |
660 | 90.54 |
650 | 76.06 |
640 | 42.36 |
630 | 7.13 |
620 | 0.23 |
610 | 0.07 |
600 | 0.07 |
590 | 0.06 |
580 | 0.04 |
570 | 0.01 |
560 | 0.01 |
550 | 0.00 |
540 | 0.00 |
530 | 0.00 |
520 | 0.00 |
510 | 0.00 |
500 | 0.00 |
490 | 0.01 |
480 | 0.00 |
470 | 0.00 |
460 | 0.00 |
450 | 0.00 |
440 | 0.00 |
430 | 0.00 |
420 | 0.00 |
410 | 0.00 |
400 | 0.00 |
390 | 0.00 |
380 | 0.00 |
370 | 0.01 |
360 | 0.00 |
350 | 0.00 |