SP645 Near-IR/Mid-Red Dichroic Block Shortpass Filter
Near-IR/Mid-Red Dichroic Block Shortpass Filter for machine-vision imaging — passes 400-640nm and blocks out-of-band light for repeatable contrast on the line.
Overview [ 01 ]
Our most popular near-IR blocking filter for inside-the-camera applications. Also referred to as an infrared cut filter, these filters limit the amount of infrared radiation that reaches delicate CCD and CMOS sensors. Near-IR blocking is unusually exceptional in the case of these filters. CCD/CMOS imagers are very sensitive to infrared radiation and, often, deep red wavelengths as well. Using a SP645 filter will reduce or prevent a reddish, washed out color of the final image. These filters are 1mm thick.
| nm | T % |
|---|---|
| 1100 | 73.35 |
| 1090 | 50.29 |
| 1080 | 21.95 |
| 1070 | 7.04 |
| 1060 | 2.87 |
| 1050 | 1.87 |
| 1040 | 1.59 |
| 1030 | 1.22 |
| 1020 | 0.63 |
| 1010 | 0.23 |
| 1000 | 0.08 |
| 990 | 0.04 |
| 980 | 0.03 |
| 970 | 0.04 |
| 960 | 0.06 |
| 950 | 0.05 |
| 940 | 0.03 |
| 930 | 0.01 |
| 920 | 0.01 |
| 910 | 0.02 |
| 900 | 0.03 |
| 890 | 0.02 |
| 880 | 0.02 |
| 870 | 0.00 |
| 860 | 0.00 |
| 850 | 0.00 |
| 840 | 0.00 |
| 830 | 0.00 |
| 820 | 0.00 |
| 810 | 0.00 |
| 800 | 0.01 |
| 790 | 0.01 |
| 780 | 0.01 |
| 770 | 0.01 |
| 760 | 0.01 |
| 750 | 0.02 |
| 740 | 0.01 |
| 730 | 0.01 |
| 720 | 0.01 |
| 710 | 0.04 |
| 700 | 0.06 |
| 690 | 0.07 |
| 680 | 0.23 |
| nm | T % |
|---|---|
| 670 | 1.62 |
| 660 | 5.94 |
| 650 | 47.88 |
| 640 | 89.35 |
| 630 | 90.08 |
| 620 | 92.71 |
| 610 | 93.03 |
| 600 | 92.70 |
| 590 | 92.13 |
| 580 | 92.58 |
| 570 | 91.67 |
| 560 | 91.04 |
| 550 | 92.18 |
| 540 | 91.83 |
| 530 | 91.22 |
| 520 | 92.20 |
| 510 | 90.79 |
| 500 | 91.75 |
| 490 | 90.92 |
| 480 | 90.66 |
| 470 | 89.95 |
| 460 | 88.58 |
| 450 | 87.82 |
| 440 | 86.80 |
| 430 | 85.98 |
| 420 | 84.45 |
| 410 | 82.83 |
| 400 | 79.51 |
| 390 | 73.27 |
| 380 | 60.71 |
| 370 | 19.42 |
| 360 | 0.08 |
| 350 | 0.00 |
| 340 | 0.00 |
| 330 | 0.00 |
| 320 | 0.00 |
| 310 | 0.00 |
| 300 | 0.00 |
| 290 | 0.00 |
| 280 | 0.00 |
| 270 | 0.00 |
| 260 | 0.00 |
| 250 | 0.00 |
Specifications [ 02 ]
Useful range400-640nm
Wavelength bandVisible
Cut-off (50%)645nm
Min peak transmission≥90%
Tolerance+/- 10nm
Surface quality40/20
Mount & Size [ 03 ]
25.4® C-Mount
mm
Enter your lens part number to get the right filter size.